Caterpillar D399
Caterpillarengine - generator setgen set engine

Caterpillar D399

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar D399 is the V16 member of Cat's D379 (V8) / D398 (V12) / D399 (V16) family of mechanically governed, four-stroke industrial and marine diesel engines, all sharing a 159 mm x 203 mm (6.25 in x 8.0 in) bore and stroke. Displacing roughly 64.4 L (3,927 cu in), the base naturally aspirated engine is rated approximately 1,000-1,310 hp (746-977 kW) at 1,200-1,300 rpm depending on rating, with a turbocharged-aftercooled D399B PCTA/D399TA variant sitting at the top of that band for higher continuous-duty marine and mechanical-drive service. Cat built the bare block into three main packages, each identified by its own serial-number-prefix block: engine-generator sets (60 Hz standby/prime output commonly 750-930 kW at 1,200 rpm), stationary industrial mechanical-drive units for oilfield pump and compressor service, and marine propulsion or ship-service power. As a stationary/marine engine it has no chassis or undercarriage; a complete generator-set skid package typically weighs approximately 7,260-13,600 kg (16,000-30,000 lb) depending on the generator end, cooling package, and control panel fitted. Dated production units place the bulk of the surviving population from the 1960s through the early 1980s, though Cat does not publish a confirmed introduction year for this model.

Within the D399 line, the main factory split is aspiration and duty rating rather than a distinct model generation: the original naturally aspirated engine covers most genset and industrial builds, while the turbocharged-aftercooled version pushes output higher for marine and continuous mechanical-drive work, in some cases pairing a Woodward electronic actuator with the base mechanical governor for tighter speed control. Precombustion-chamber vs direct-injection valve hardware also varies by build, so check the dataplate rather than assume. The core V16 block, bore and stroke, and sleeve-metering fuel-injection architecture stayed constant across the run. The D399 still matters in today's used and parts market because so many of these blocks remain in service or get reconditioned: rebuilt standby and prime-power gensets, remanufactured marine propulsion units, and wellhead or pipeline mechanical-drive engines all draw on an active inframe and overhaul-kit aftermarket that lets a shop rebuild a decades-old block to like-new condition well below new-engine cost. With no ECM and no emissions certification tied to it, the D399's appeal is mechanical simplicity and long service life rather than modern high-output efficiency - Cat's large industrial diesel lineup moved on to newer designs after this family, without a single same-numbered successor carrying the D399 name forward.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.

Caterpillar D399 specifications

Engine

Engine model / arrangementD399, naturally aspirated V16 diesel; later production offered as D399B PCTA (turbocharged, aftercooled). Generator-set packages are commonly built on a specific factory arrangement for this rating.
ConfigurationV16, four-stroke-cycle diesel, two banks of 8 cylinders, water-cooled, direct injection
Bore x stroke159 mm x 203 mm (6.25 in x 8.0 in)
Displacementapproximately 64.4 L (3,927 cu in)
AspirationNaturally aspirated on the base D399; turbocharged and aftercooled on the D399B PCTA / D399 TA variant, which carries a higher power rating
Gross engine powerapproximately 1,000-1,310 HP (746-977 kW) at 1,200-1,300 RPM, varies by rating and aspiration; turbocharged-aftercooled variant sits at the top of this range
Net powerNot published separately from gross rating for this engine
GovernorWoodward mechanical-hydraulic governor on original packages; some rebuilt/retrofit units use a Woodward EG3P electronic actuator/governor
Emissions tierPredates EPA/EU emissions tier regulation; no certified emissions tier applies to this engine

Weights

Operating / shipping weightapproximately 7,260-13,600 kg (16,000-30,000 lb) for the bare genset package; varies widely with generator end, radiator, and control-panel configuration
Ground pressureNot applicable - stationary skid-mounted generator set, no ground-engaging undercarriage

Dimensions

Transport lengthapproximately 3.25-5.69 m (128-224 in), varies by package
Transport widthapproximately 1.83-2.29 m (72-90 in), varies by package
Transport heightapproximately 1.42-2.54 m (56-100 in), varies by package
Wheelbase / track gauge / ground clearanceNot applicable - stationary skid-mounted generator set, no undercarriage or running gear

Performance

Generator output, naturally aspirated750-930 kW (940-1,163 kVA) standby rating, 1,200 RPM at 60 Hz; approximately 1,000 RPM for equivalent kW class at 50 Hz
Generator output, turbocharged-aftercooled (D399B PCTA)approximately 1,030-1,050 kW at 1,200 RPM, 60 Hz
Voltage / phase277/480 V, 480 V, 600 V, or 347/600 V, three-phase, six-wire on higher-voltage windings; brushless excitation common
Power factor0.8
Travel speed / drawbar / dig / lift / gradeabilityNot applicable - stationary generator-set engine, no travel or ground-engaging performance figures published

Service capacities (summary)

Fuel tankNot published for a standard D399 genset package; fuel supply is normally sized to a separate sub-base or day tank selected per installation
Engine oil (lube system refill)approximately 606 L (160 US gal)
Cooling system (engine only)approximately 322 L (85 US gal); radiator-cooled or heat-exchanger-cooled packages both used in the field
Hydraulic systemNot applicable - diesel generator set, no hydraulic system

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

D399 fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase, with filterapprox. 151-190 L (40-50 US gal) on most industrial and generator-set builds; a marine-application lubrication manual for this engine family shows a much larger refill figure near 606 L (160 US gal) for an extended-sump setup. Treat as a range - varies by oil pan/sump configuration and application (genset vs marine vs drilling-rig service)Cat Diesel Engine Oil (Cat DEO) or an equivalent heavy-duty diesel engine oil suited to this pre-electronic-era engine. Viscosity by ambient temperature: SAE 10W-30 multigrade for general and cooler service, roughly -18C/0F up to about 40C/104F; SAE 15W-40 for sustained warm climates. The older single-grade chart for this engine family also lists straight SAE 30 or SAE 40 as acceptable options depending on ambient range
Cooling system (jacket water circuit, engine-mounted radiator)approx. 322 L (85 US gal) for the engine-mounted radiator arrangement. Total system volume changes with the cooling package fitted - engine-mounted radiator, remote radiator, or keel cooler - plus aftercooler circuit and external piping, so treat this as a reference figure rather than a universal numberConventional heavy-duty glycol-based coolant/antifreeze dosed with Cat supplemental coolant additive (SCA) - this engine family predates Cat's extended-life coolant (ELC) specification. Target roughly 3 percent inhibitor concentration at initial fill (about one pint per 4 US gal), then add SCA at scheduled service intervals based on a coolant test-kit reading rather than on a fixed schedule alone
Fuel tanknot a fixed factory capacity for this bare industrial/marine engine - the tank is sized and supplied by the system packager or skid builder, not specified as a single number in the engine OMM. Packaged standby generator sets built on this engine are commonly seen with external bulk or sub-base tanks in the vicinity of 3,785 L (1,000 US gal), but this varies by installation - confirm against the specific unit's fuel-system drawing or nameplateNo. 2 diesel fuel meeting Cat's fuel specification for this engine family. Use a cold-weather fuel blend or approved cold-flow additive in low ambient temperatures to prevent gelling
Grease - external bearing points (water pump, fan bearing)spec only - no listed reservoir volume; lubricate per the scheduled service intervalCat multipurpose ball-bearing-type grease, NLGI 2, lithium-complex type, for the water pump and external fan-bearing lubrication points. As a bare engine-generator package this model has no transmission, final drive, axle, or hydraulic-system grease points to service

Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.

Caterpillar D399 maintenance schedule

Service intervalTasks
Every 50 h
  • Check engine oil level and look for external leaks at the block, oil cooler, and injection-pump gallery before each start.
  • Check coolant level in the radiator, heat exchanger, or expansion tank, and watch for oil-in-coolant or coolant-in-oil signs at the tube-type oil cooler.
  • Drain water and sediment from the fuel tank or day tank and the primary fuel filter/water separator.
  • Check air-start receiver pressure and drain moisture, or check battery condition and charging output on electric-start units.
  • Listen for rod or main bearing knock at start-up and at idle before applying load.
  • Log oil pressure, jacket-water temperature, and rpm from the gauge panel and compare against the prior reading.
Every 250 h
  • Change engine oil and the primary oil filter, or pull a scheduled oil sample if running an oil-analysis program.
  • Clean or replace fuel filter elements and drain sediment from the fuel/water separator bowl.
  • Check and adjust fan and water-pump drive-belt tension.
  • Grease the water pump and external fan-bearing points with NLGI 2 lithium-complex grease.
  • Inspect turbocharger inlet, exhaust, and aftercooler connections for leaks on turbocharged-aftercooled (D399B PCTA/D399TA) units.
Every 500 h
  • Change engine oil and filter if not already done on the 250-hour cycle, and send a sample for lab analysis.
  • Replace fuel filter elements and inspect fuel lines and the injection-pump gallery for leaks.
  • Check and adjust valve lash across both cylinder banks.
  • Test coolant with a test kit and add supplemental coolant additive (SCA) to the target inhibitor level.
  • Clean the crankcase breather.
  • On standby genset packages that have not carried real load recently, run a load-bank test at 75 percent or greater load to clear wet-stacking residue.
Every 1,000 h
  • Check and, if needed, resynchronize fuel-injection pump timing and rack settings across the injection-pump bank.
  • Inspect and clean the turbocharger on TA-equipped units and check shaft end play.
  • Inspect the tube-type oil cooler for cross-contamination between the oil and coolant circuits; pressure test if milky oil or unexplained low oil pressure has occurred.
  • Service the air-starter and pre-luber on air-start units, or test starter motor and battery/charging condition on electric-start units.
  • Inspect the torsional damper and flywheel-housing coupling to the driven load for wear.
  • Check generator-end and exciter/voltage-regulator connections for corrosion or loose terminals on genset packages.
Every 2,000 h
  • Inspect and test the mechanical governor and the hydro-mechanical safety shutoff group (low oil pressure, high water temperature, overspeed switches).
  • Pull injection pumps for bench calibration and recheck output balance across the bank.
  • Review oil-analysis trends for bearing-wear metals and inspect main and rod bearings where accessible.
  • Check cylinder liner condition, compression, and blow-by on each bank.
  • Inspect the water pump and rebuild if wear is found.
  • Verify safety-switch trip points (oil pressure, water temperature, overspeed) against factory settings on a test stand.
Every 20,000 h
  • Plan a full inframe or out-of-frame overhaul in the 20,000-30,000 hour range typical for a well-maintained D399, sooner if wet-stacking history or bearing-wear trends point to earlier distress.
  • Replace liners, pistons, rings, and main/rod bearings as a set rather than piecemeal to restore a consistent zero-hour baseline across the engine.
  • Recalibrate or rebuild the full injection-pump bank and governor together rather than swapping individual components.
  • Reassess the generator end, exciter, and control/switchgear hardware against nameplate ratings, since decades-old control components are often retrofitted from original spec.

Servicing the D399 beyond the schedule

Predictive Maintenance & Fluid Analysis

Run an oil-analysis program: crankcase capacity is roughly 151-190 L (40-50 US gal) on genset and industrial builds, up to 606 L (160 US gal) on extended marine sumps. Track wear-metal trends for main and rod bearings - this V16 loads each crank journal from both cylinder banks, so wear runs higher than on an inline engine. Watch coolant test-kit readings for SCA depletion, and flag oil-in-coolant or coolant-in-oil trends early; on the D399 that usually points to the tube-type oil cooler, not a head gasket.

Corrective & Common Repairs

Most no-fire complaints on a D399 trace to the sleeve-metering injection pumps, not compression: a stuck plunger, worn barrel, or fouled injection valve on one cylinder mimics a compression fault. Governor hunting or surging under load is almost always worn or misadjusted linkage, not fuel-system failure - there's no ECM to fault-code it. A sudden low-oil-pressure or milky-oil complaint calls for checking the tube-type oil cooler before condemning a bearing. A generator end that won't build voltage points to the exciter or regulator, not the diesel.

Overhaul & Rebuild Points

A D399 long-block overhaul replaces liners, pistons, rings, and main/rod bearings as a full set for a consistent zero-hour baseline. Bearings are the top wear item - this V16 loads each crank journal from both cylinder banks, so wear runs higher than on an inline engine, and metal in an oil sample calls for inspection. Rebuild the injection-pump bank and governor together on a test stand, not piecemeal, since timing across the pump bank must stay synchronized. Major overhaul typically falls in the 20,000-30,000 hour range on a well-kept engine.

Seasonal & Environment Servicing

Standby D399 gensets need a weekly exercise run under real load, not just a no-load start, or unburned fuel builds up as wet stacking; an idle unit needs a load-bank test at 75 percent or higher to clear it. Cold climates call for a jacket-water heater and cold-flow fuel additive to prevent gelling and keep the block ready for air-start or electric-start cranking. Marine and raw-water-cooled installs run heat exchangers or keel coolers on their own schedule - don't carry a radiator-cooled genset's coolant spec over to a raw-water circuit.

D399 common service parts

Part numberPart
7N-8417Filter As-OilCheck fitment →

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D399 fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
High Water Temperature shutdown (thermal contactor switch — no CID/FMI code)Coolant temperature reached the switch trip point (around 98°C/209°F at sea level) in the water-temperature regulator housing; the switch closes and signals the shutoff solenoid to stop fuel.Low coolant level, restricted radiator or heat exchanger, failed water pump, stuck temperature regulator, engine overload.Check coolant level and flow before restarting, verify actual temperature with a test gauge at the regulator housing, then check the switch and its wiring if the reading is normal.
Low Oil Pressure shutdown (oil pressure contactor switch — no CID/FMI code)Oil pressure fell below the switch's calibrated setting; the contactor closes and energizes the same shutoff solenoid used by the other safety switches, cutting fuel to stop the engine.Low crankcase oil level, plugged filter or suction screen, worn main/rod bearings, failing oil pump, faulty switch or wiring.Check oil level and filter condition first, confirm actual pressure with a mechanical test gauge on the block, then test the contactor switch if pressure reads within spec.
Overspeed shutdown (overspeed contactor switch, tachometer-drive mounted — no CID/FMI code)Engine speed exceeded the overspeed switch's trip point; contacts close and energize the shutoff solenoid, pulling the fuel rack to the no-fuel position (and, on some installations, closing the air-inlet shutoff valve).Sudden loss of generator load, governor or linkage malfunction, fuel rack sticking, misadjusted or worn overspeed switch.Inspect governor linkage and fuel rack for binding, confirm the load breaker released cleanly, and verify the switch trip speed on a test stand before returning the set to service.
Emergency/remote manual shutdown (remote manual control switch — no CID/FMI code)A manually operated remote stop switch or pushbutton energized the same shutoff solenoid used by the automatic safety switches, cutting fuel and stopping the engine.Intentional manual stop, remote E-stop actuated, or a wiring fault holding the shutdown circuit closed.Confirm the switch/pushbutton position, check continuity of the wiring to the shutoff solenoid, then reset per the shutoff-group procedure before restarting.
No-start / hard-start condition (symptom-based diagnosis, no fault code)The engine fails to start or is very slow to catch; the mechanical troubleshooting guide treats this as a symptom to trace through the fuel and starting circuits rather than a discrete code.Air in the fuel system, plugged fuel filters, weak fuel transfer pump, insufficient cranking speed or starting air pressure, fuel shutoff solenoid stuck in the shutoff position.Bleed the fuel system and inspect filters, confirm the fuel rack moves freely to full-fuel, and verify cranking speed/starting air pressure meets the minimum before checking injectors.
Rough running / misfire (symptom-based diagnosis, no fault code)Uneven combustion across cylinders is diagnosed as a symptom category in the D399 troubleshooting guide, not flagged by an electronic code.Faulty injector or injection pump on one or more cylinders, incorrect valve lash, air in the fuel system, uneven cylinder compression.Run a cylinder cutout (knock-off) test to isolate the weak cylinder, check valve lash and injection timing, and inspect the fuel system for air ingress.
Stalling at low rpm / erratic idle (symptom-based diagnosis, no fault code)Idle or low-speed instability traced through the governor and low-idle fuel circuit per the mechanical troubleshooting guide; no electronic code is generated.Worn or misadjusted governor linkage, incorrect low-idle fuel setting, air in the fuel system, dirty low-idle circuit in the injection pump.Check and adjust governor linkage to spec, verify the low-idle fuel setting, and bleed the fuel system of air.

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

D399 attachments & work tools

No ground-engaging work tools

The D399 is an industrial diesel engine (V16, part of the D379/D398/D399 mechanically governed engine family), not a machine chassis. There is no bucket, blade, coupler, or ground-engaging attachment lineup for it. What varies instead is how the bare engine is packaged and what it drives.

Cooling arrangement

Offered as a self-contained skid with engine-driven fan and radiator for standalone genset or power-unit installs, or with a remote radiator, or with a jacket-water heat exchanger using raw or plant water for engine rooms, compressor houses, and marine installs where an engine-mounted radiator is impractical.

Starting system

Air-start with an air starter and pre-luber is common on oilfield and industrial power-unit packages; genset packages are also found with 24V electric starting. Which one ships depends on the package builder and era, not a single fixed factory standard.

Governor and shutdown protection

Mechanical/hydra-mechanical governor control (units are seen fitted with a Woodward-type mechanical governor) rather than electronic engine management, consistent with this being a pre-electronic engine family. A hydro-mechanical safety shutoff protects against conditions like low oil pressure, high jacket-water temperature, or overspeed, paired with a gauge panel (oil pressure, water temperature, tachometer).

Generator end and electrical output

For genset packages the engine drives a single-bearing three-phase alternator with brushless excitation, coupled through the engine flywheel housing. Output has been built at 60 Hz (1200 rpm) and less commonly 50 Hz, in voltage classes such as 277/480V, 480V, or 347/600V depending on the switchgear ordered; treat any single kW/kVA figure as example-unit specific since standby vs prime ratings and voltage class both shift the number.

Flywheel housing and driven-load coupling

A SAE-pattern flywheel housing is the standard interface for coupling the bare engine to its driven load, whether that load is a generator end, a clutch-coupled compressor, or a pump end. This is the engine's equivalent of a mounting system, used across its non-generator industrial applications.

Aspiration variant

A naturally aspirated version is the base D399 used in most genset and industrial power-unit packages, while a turbocharged-aftercooled D399TA variant exists for higher continuous-output marine and industrial drive duty. Power and speed ratings differ between the two and should not be blended.

Application packages

The same long-stroke V16 block is built up into diesel generator sets (prime or standby power), marine propulsion and ship-service power units, and industrial prime movers for gas-compressor and pump-drive service in pipeline, gas-gathering, and wellhead applications. These are engine/package configurations, not attachments.

All D399 assemblies by section

Every catalogued assembly group for the Caterpillar D399. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
5n3221 Air Cleaner Inlet Adapter Group
5N***21Adapter Group-Air Cleaner; Adapter Group-Air Cleaner Inlet1
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6l6292 Jacket Water Aftercooler Group
6L***92Aftercooler Group-Jacket Water; Jacket Water Aftercooler Group1
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3n6620 Sea Water Aftercooler
6l6394 Sea Water Aftercooler Group-Type 2
6l6394 Sea Water Aftercooler Group-Type 1
3n8380 Air Cleaner Assembly
7l6549 Air Cleaner Group
7L***49Air Cleaner Group; Air Cleaner Group1
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8l5948 Air Cleaner Group-Type 1
8l5948 Air Cleaner Group-Type 2
7n8546 Cartridge Group
4n4566 Cartridge Group*R
6l9015 Aftercooler Connection Group-Ebullient Cooled
6L***15Connection Group-Aftercooler; Aftercooler Connections Group1
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4w265 Fastener Group-Sea Water Aftercooler
4w2657 Fastener Group-Sea Water Aftercooler
5n9527 Exhaust Fitting Group-Flexible
5N***27Fitting Group-Exhaust; -Flexible1
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5l6796 Vertical Exhaust Fitting Group-Flexible-12 Inch
2w7848 Exhaust Fitting Group-Flexible-203.2mm (8 In.)
2w7871 Exhaust Flange Group
2w7852 Exhaust Flange Group-203.2mm (8 In.)
2W***52Flange Group-Exhaust; Flange Group-Exhaust1
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6l3641 Exhaust Flange Group
2n3322 Air Cleaner Gauge Group-2 Required
2N***22Gauge Group-Air Cleaner; Air Filter Indicator Group1
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7e6247 Heater Gp-Jacket Water
4w2624 Auxiliary Lines Group-Sea Water Return
4w2633 Auxiliary Lines Group-Sea Water Aftercooler
5n3042 Auxiliary Lines Group-Fresh Water
2n5040 Manifold Group-Type 2
2N***40Manifold Group-Cooling; Manifold Group1
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2n5040 Manifold Group-Type 1
2N***40Manifold Group-Cooling; Manifold Group1
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3n1698 Water Cooled Exhaust Manifold Group-Type 3
3N***98Manifold Group-Water Cooled Exh1
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3n1698 Water Cooled Exhaust Manifold Group-Type 2
3N***98Manifold Group-Water Cooled Exh1
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3n1698 Water Cooled Exhaust Manifold Group-Type 1
3N***98Manifold Group-Water Cooled Exh1
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3n1725 Water Shielded Manifold Group-Side View-Part 2
3N***25Manifold Group-Water Shielded; Water Shielded Manifold Group1
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3n1725 Water Shielded Manifold Group-As Viewed From Rear Of Engine-Part 1
3N***25Manifold Group-Water Shielded; Water Shielded Manifold Group1
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5n2176 Valve Mounting Group-Type 2
5n2176 Valve Mounting Group-Type 1
3n8056 Turbocharger Shield Group
3N***56Shield Group-Turbocharger; Turbocharger Shield Group1
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3n6866 Turbocharger Shield Group
5n4158 Turbocharger Group-Part 1
6l9289 Turbocharger Group-Rear View
6L***89Turbocharger Group; Turbocharger Group--Rear View1
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8n3323 Turbocharger Group-R.H.*R
6n3274 Turbocharger Group-2 Required
6n8460 Turbocharger Group-2 Required*R
6N***60Turbocharger Group; Turbocharger Group1
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7n3203 Turbocharger Group-2 Required
6n3275 Turbocharger Group-Field Installation
6n8461 Turbocharger Group-R.H.
8n3322 Turbocharger Group-L.H.
5n4157 Turbocharger Group-Part 1
7n3205 Turbocharger Group-Field Installation*R
5n4157 Turbocharger Group-Part 2
5n4158 Turbocharger Group-Part 2
1w4681 Turbocharger Group-L.H.
Basic Engine
5n6253 Engine Base Group-30 Foot
5n6251 Engine Base Group-20 Foot
5n6250 Engine Base Group-15 Foot
5n6252 Engine Base Group-25 Foot
4w0852 Base Gp-Engine & Generator
7w1597 Base Gp-Engine & Generator
1w6116 Base Gp-Engine & Generator
7l2500 Oil Pan Base Group-Part 1-Type 2
6l9445 Oil Pan Base Group-Part 1 Of 2
7l2500 Oil Pan Base Group-Part 2-Type 1
6l9445 Oil Pan Base Group-Part 2 Of 2
7l2500 Oil Pan Base Group-Part 2-Type 2
7l2500 Oil Pan Base Group-Part 1-Type 1
7l2500 Oil Pan Base Group-Part 1 Of 2-Type 3
7l2500 Oil Pan Base Group-Part 2 Of 2-Type 3
6l8396 Camshaft Gp
6l8396 Camshaft Group
4w2564 Front Coupling Arrangement
3n8987 Front Coupling Arrangement
2N***19Shaft As1
3N***42Fastener Group-Front Drive Shaft; Fastener Group--Shaft To Damper1
3N***43Damper Group1
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3n8996 Coupling Arrangement-Shaft To Shaft
5n3765 Flexible Coupling Group
5N***65Coupling Group-Flexible; -Viscous Dampened1
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5n3764 Flexible Coupling Group-Viscous Damped
5n3374 Cover Group-Front Accessory Drive
4w7720 Crankshaft Group
4W***20Crankshaft Group; Crankshaft Group1
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6l8357 Crankshaft Group
6L***57Crankshaft Group; Crankshaft Group1
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3n2679 Cylinder Block And Covers Group-Part 1 Of 2
3N***79Cylinder Block & Covers Group; Cylinder Block And Covers Group1
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3n2679 Cylinder Block And Covers Group-Part 2 Of 2
3N***79Cylinder Block & Covers Group; Cylinder Block And Covers Group1
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3n2682 Cylinder Head And Valve Mechanism Group-Part 2 Of 2
3N***82Cylinder Head Group; Cylinder Head & Valve Mechanism Group1
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5n8320 Cylinder Head Group
5n8882 Cylinder Head Group
3n2682 Cylinder Head And Valve Mechanism Group-Part 1 Of 2
3N***82Cylinder Head Group; Cylinder Head & Valve Mechanism Group1
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4w2561 Vibration Damper Group
4W***61Damper Group; Vibration Damper Group1
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3n8643 Vibration Damper Group
4w2563 Damper Group-Vibration
3n6356 Vibration Damper Group
3N***56Damper Group; Vibration Damper Group1
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3n6722 Auxiliary Drive Group-Crankshaft Front
6l2120 Auxiliary Drive Group-Sae Standard Engine Rotation
3n2684 Front Accessory Drive Group-Part 1 Of 2
3N***84Drive Group-Front Accessory; Front Accessory Drive Group1
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3n2684 Front Accessory Drive Group-Part 2 Of 2
3N***84Drive Group-Front Accessory; Front Accessory Drive Group1
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3n2683 Front Accessory Drive Group-Part 2 Of 3
3n2683 Front Accessory Drive Group-Part 1 Of 3
3n2683 Front Accessory Drive Group-Part 3 Of 3
8n9571 Engine Mounting Group-Flexible
8n9572 Engine Mounting Group-Flexible
3n9536 Fastener Group-Guard To Guard
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly6
2N***85Nut-Clip-Damper Guard To Coupling Guard6
3B***06Washer,Lock; Flange,Elbow,Clamp Assembly,Tube To Pump,Tube Assembly To Screen,Clip Mounting,And Tube Assembly To Transmission6
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3n8647 Fastener Group
3N***47Fastener Group-Coupling; Fastener Group--Shaft And Hub1
7J***68Bolt; (7/8-9x3-In)8
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3n8642 Front Drive Shaft Fastener Group
3N***42Fastener Group-Front Drive Shaft; Fastener Group--Shaft To Damper1
5F***62Washer-Hard; (28x44.5x4-mm Thk)10
5F***32Bolt--1" Thread X 7" Long10
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Flexible Coupling Hub
5N***16Hub-Flexible Coupling0
5N***35Hub-Flexible Coupling0
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6l9646 Flywheel Group
3n8676 Coupling Guard Group-Band
3n5765 Flywheel Coupling Guard Group
3n8677 Coupling Guard Group
3N***77Guard Group-Coupling; Coupling Guard Group1
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3n5764 Extension Guard Group
3n0846 Lifting Eye Group
3N***46Lifting Group; Lifting Eye Group1
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5n9216 Drain Lines Group
7w1806 Mounting Gp-Engine
4w3650 Mounting Gp-Engine
4w3651 Mounting Gp-Engine
3n5496 Mounting Gp-Engine
5n9193 Mounting Gp-Engine
8n9570 Engine Flexible Mounting Group
2w3619 Oil Pan Group-Part 1 Of 2
2w3619 Oil Pan Group-Part 2 Of 2
6l2868 Connecting Rod And Piston Group-16 Required
6L***68Piston & Rod Group; Connecting Rod And Piston Group1
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4w0603 Engine Support And Generator Rail Group
4W***03Rail Group-Engine & Gen Support1
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2n3911 Engine & Generator Support Rails Group
2N***11Rail Group-Engine & Gen Support1
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3n8661 Engine & Generator Support Rails Group
3n8682 Engine Support Rails Group
8l6303 Engine Support Rails Group
2w8590 Engine & Generator Support Rails Group
4w2569 Seal Gp-Crankshaft Conversion
4W***69Seal Group-Crankshaft Conversion1
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4w2571 Crankshaft Conversion Seal Group-Rear-Opposite Rotation
4W***71Seal Group-Crankshaft Conversion1
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4w2568 Crankshaft Conversion Seal Group-Front-Standard Rotation
4W***68Seal Group-Crankshaft Conversion1
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4w2570 Crankshaft Conversion Seal Group-Front-Opposite Rotation-
4W***70Seal Group-Crankshaft Conversion1
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3n5620 Disconnect Spacer Group
3N***20Spacer Group-Disc; Disconnect Spacer Group1
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7l2417 Engine Support Rails Group
3n6399 Crankcase Explosion Relief Valve Assembly
Cooling System
5n5739 Heater Gp-Jacket Water-2 Required
5n5740 Jacket Water Heat Group-240 Volt, 3 Kilowatts-2 Required
7c1710 Heater Gp-Jacket Water
7C***10Heater Group-Jacket Water1
9Y***78Thermostat1
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3n4196 Aftercooler Connections Group-Full Flow
8l5025 Aftercooler Connections Group
8L***25Connection Group-Aftercooler; Aftercooler Connection Group (Jwac)1
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3n2652 Auxiliary Expansion Tank Connections
3N***52Connection Group-Auxiliary Exp Tank; -Auxiliary1
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3n9618 Emergency Water Connections Group
3N***18Connection Group-Auxiliary Water1
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3n9619 Emergency Water Connections Group
3n1325 Oil Cooler And Lines Group-Part 2 Of 2
3N***25Cooler & Lines Group-Oil; Oil Cooler And Lines Group1
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3n1325 Oil Cooler And Lines Group-Part 1 Of 2
3N***25Cooler & Lines Group-Oil; Oil Cooler And Lines Group1
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3n1325 Oil Cooler And Lines Group-Part 2
3N***25Cooler & Lines Group-Oil; Oil Cooler And Lines Group1
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3n1325 Oil Cooler And Lines Group-Part 1
3N***25Cooler & Lines Group-Oil; Oil Cooler And Lines Group1
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5n7996 Oil Cooler Group-Sea Water
3n9378 Oil Cooler Group-Sea Water
1n9420 Radiator And Blower Fan Assembly-Type 1
1n9420 Radiator And Blower Fan Assembly-Type 3
1n9420 Radiator And Blower Fan Assembly-Type 2
2w0858 Guard Gp-Fan
2w0857 Fan Guard Group
3n8992 Heat Exchanger Group-Sea Water
3n8995 Heat Exchanger Group-Sea Water
3n8994 Heat Exchanger Group-Sea Water
2n5790 Heat Exchanger And Piping Group
3n8891 Heat Exchanger Assembly
3n8993 Heat Exchanger Group-Sea Water
3n8890 Heat Exchanger Group-Sea Water
3n8893 Heat Exchanger Group-Sea Water
4w4632 Heat Exchanger Group-Sea Water
4w4651 Heat Exchanger Group-Sea Water
4w4642 Heat Exchanger Group-Sea Water
3n8892 Heat Exchanger Group-Sea Water
4w4652 Heat Exchanger Group-Sea Water
4w4631 Heat Exchanger Group-Sea Water-762 Mm (30 In.)
4w4641 Heat Exchanger Group-Sea Water
3n8684 Auxiliary Lines Group-Sea Water
1w6003 Auxiliary Lines Group-Fresh Water
5n2540 Auxiliary Lines Group-Sea Water
5n7994 Auxiliary Lines Group-Sea Water
5n2550 Auxiliary Lines Group-Sea Water
5n7998 Auxiliary Lines Group-Sea Water
3n8095 Oil Cooler Lines Group-Ebullient Cooler-Type 1
3N***95Lines Group-Oil Cooler; Oil Cooler Lines Group1
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3n8095 Oil Cooler Lines Group-Ebullient Cooled-Type 2
3N***95Lines Group-Oil Cooler; Oil Cooler Lines Group1
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7l2689 Sea Water Lines Group
3n1445 Lines Gp-Water
3N***45Lines Group-Water; Water Lines Group1
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5n6076 Mounting Gp-Jacket Water Heater
5n3041 Heat Exchanger Mounting Group
5n9308 Heat Exchanger Mounting Group
2w0663 Heat Exchanger Mounting Group
5n9229 Mounting Gp-Radiator
3n8568 Radiator Mounting Group
7w5632 Radiator Mounting Group
5n9284 Radiator Mounting Group
5n9285 Radiator Mounting Group
4w3703 Radiator Mounting Conversion Group
5n1784 Fan Drive Group
6l8983 Water Pump Group*R
6L***83Pump Group-Water; Water Pump Group1
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4l8800 Water Pump Group*R
4L***00Pump Group-Water; Fresh Water Pump Group1
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7l3222 Pump Gp-Water-Sae Standard Engine Rotation
3n3239 Radiator & Blower Fan As
7l6776 Radiator And Blower Fan Assembly-Type 1
7l7881 Radiator & Suction Fan As
7l7881 Radiator And Suction Fan Assembly-Type 2
3n3240 Radiator And Suction Fan Assembly-110 Degrees F (44 Degrees C)
3n3240 Radiator & Suction Fan As
7l6776 Radiator And Blower Fan Assembly-Type 2
3n3239 Radiator And Blower Fan Assembly-110 Degrees F (44 Degrees C)
3n6984 Radiator And Fan Drive Group-Suction-52 Degrees C (125 Degrees F.)
5n6352 Radiator And Fan Drive Group-Blower
5N***52Radiator And Fan Drive Group-Blower1
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3n6983 Radiator And Fan Drive Group-Blower-52 Degrees C
3N***83Radiator And Fan Drive Group-Blower-52 Degrees C1
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3n6981 Radiator And Fan Drive Group-Blower-Standard Capacity
3N***81Radiator And Fan Drive Group-Blower-Standard Capacity1
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3n6982 Radiator And Fan Drive Group-Suction-Standard Capacity
3N***82Radiator And Fan Drive Group-Suction-Standard Capacity1
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3n1425 Tank Gp-Expansion-Part 1 Of 2
3n1425 Tank Gp-Expansion-Part 2 Of 2
5n3728 Float Valve Group
Engine Arrangement
3n8989 Engine Conversion Arrangement
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)1
2N***65Bolt-High Temperature; (3/8-16x1.75-In)1
2N***33Brace Air Cleaner To Turbocharger Shield2
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3n8189 Engine Conversion Arrangement-Ebullient Cooling
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine3
2N***40Manifold Group-Cooling; Manifold Group1
3N***95Lines Group-Oil Cooler; Oil Cooler Lines Group1
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5n7278 Engine Arrangement
2N***85Filter Group-Oil; Oil Filter Group1
2N***22Gauge Group-Air Cleaner; Air Filter Indicator Group2
3N***46Lifting Group; Lifting Eye Group1
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Fuel System And Governor
5n5121 Valve Body Assembly
7n4195 Governor Control Group-Ug8l
8n1731 Governor Control Group-Standby
8n1730 Governor Control Group-Load Sharing
3n9125 Governor Control Group-Air Actuated
8n5069 Controlet Assembly
4n5689 Cover Group
5n1697 Fuel Drain Group-Lines And Alarm Switch
5n5251 Drive Gp-Governor-Woodward-Electric-Part 1 Of 2
5n5251 Drive Gp-Governor-Woodward-Electric-Part 2 Of 2
5n2423 Woodward Governor Drive Group-Diesel
5N***23Drive Group-Governor; Woodward Governor Drive Group--Diesel1
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3n2686 Fuel Pump And Governor Drive Group-Part 1 Of 2
3N***86Drive Group-Governor & Fuel Pump; Governor & Fuel Pump Drive Group1
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3n2686 Fuel Pump And Governor Drive Group-Part 2 Of 2
3N***86Drive Group-Governor & Fuel Pump; Governor & Fuel Pump Drive Group1
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7n8867 Fuel Filter Group-Part 1
7N***67Filter Group-Fuel; Fuel Filter Group1
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2n2048 Crude Fuel Filter Group
7n8867 Fuel Filter Group-Part 2
7N***67Filter Group-Fuel; Fuel Filter Group1
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5n5122 Fuel Filter And Priming Pump Group-Part 2
5N***22Filter Group-Priming Pump & Fuel; Filter And Priming Pump Group Bet 86h & 86j1
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5n5122 Fuel Filter And Priming Pump Group-Part 1
5N***22Filter Group-Priming Pump & Fuel; Filter And Priming Pump Group Bet 86h & 86j1
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3n3501 Heavy Distillate Fuel Arrangement-Part 1 Of 3-Type 2
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting1
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
1C***51Bolt--Installation Of 2v***26 Retainer3
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3n3501 Heavy Distillate Fuel Arrangement-Part 2 Of 3-Type 1
1D***17Nut-Plate And Angle Assembly To Hydraulic And Fuel Tanks; Nut Plate And Angle Assembly To Hydraulic And Fuel Tanks8
1P***61Connector Gauge Tube To Instrument Panel Junction Block1
1P***62Elbow Service Tee Top For Gauge Tube; Elbow-Service Tee Top For Gauge Tube1
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3n3501 Heavy Distillate Fuel Arrangement-Part 1 Of 3-Type 1
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting1
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
1C***51Bolt--Installation Of 2v***26 Retainer3
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3n3501 Heavy Distillate Fuel Arrangement-Part 2 Of 3-Type 2
03***65Nipple-Fuel Regulator To Housing Rear1
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case2
1A***09Capscrew (3/8 - 24 Nf X 1 1/4 Gd8, Hex)4
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3n3501 Heavy Distillate Fuel Arrangement-Part 3 Of 3-Type 2
1B***31Nut-Rops Mounting Bracket To Fender Rear2
1S***86Clip 1 3b***04 Clip2
3B***80Nipple--Priming Pump Bottom1
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3n3501 Heavy Distillate Fuel Arrangement-Part 3 Of 3-Type 1
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case2
1A***09Capscrew (3/8 - 24 Nf X 1 1/4 Gd8, Hex)4
1B***03Nut Exhaust Pipe To Starting Engine Cylinder Block4
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7n2702 Woodward Governor Group-Ug8d-110 Volt-Part 1 Of 2
7n9922 Woodward Governor Group-Ug8d-110
7n2702 Woodward Governor Group-Ug8d-110 Volt-Part 2 Of 2
7n4197 Woodward Governor Group-Ug8l-Part 2
7n9923 Woodward Governor Group-Ug8d-Part 1
7N***23Governor Group-Woodward; Woodward Governor Group1
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7n4197 Woodward Governor Group-Ug8l-Part 1
7n9923 Woodward Governor Group-Ug8d-Part 2
7N***23Governor Group-Woodward; Woodward Governor Group1
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3n6668 Flexible Fuel Oil Lines Group
3n1944 Fuel Lines Group
3N***44Lines Group-Fuel; Fuel Lines Group1
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5n6973 Fuel Injection Lines Group-Part 1
5N***73Lines Group-Fuel Injection; Fuel Injection Lines Group1
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5n6973 Fuel Injection Lines Group-Part 2 Of 2
5N***73Lines Group-Fuel Injection; Fuel Injection Lines Group1
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5n6973 Fuel Injection Lines Group-Part 1 Of 2
5N***73Lines Group-Fuel Injection; Fuel Injection Lines Group1
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5n4516 Fuel Injection Lines Group-Type 2
5n4516 Fuel Injection Lines Group-Type 3
5n6973 Fuel Injection Lines Group-Part 2
5N***73Lines Group-Fuel Injection; Fuel Injection Lines Group1
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5n4516 Fuel Injection Lines Group-Type 1
5n2522 Magnetic Pick-Up Group
4l8232 Fuel Priming Pump Assembly
4L***32Pump As-Fuel Priming; Fuel Priming Pump Assembly1
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6l8626 Fuel Pump Housing Group
6L***26Pump Group-Fuel Injection; Fuel Pump Housing Group1
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7n8599 Fuel Priming Pump Group
3n9387 Duplex Fuel Filter System
3N***44Lines Group-Fuel; Fuel Lines Group1
3N***87Pump Group-Fuel Prm & Prim Filter1
5N***22Filter Group-Priming Pump & Fuel; Filter And Priming Pump Group Bet 86h & 86j1
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5n5632 Fuel Transfer Pump Group
5N***32Pump Group-Fuel Transfer; Fuel Transfer Pump Group1
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3n2078 Fuel Transfer Pump Group
3N***78Pump Group-Fuel Transfer; Fuel Transfer Pump Group1
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5n1997 Governor Shield Group
5N***97Shield Group-Governor; Governor Shield Group1
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1n5073 Rack Shut-Off Group--Type 2
1n5073 Rack Shut-Off Group-Type 1
7n4196 Woodward Governor Synchronizing Motor Switch Group
7N***96Switch Group; Woodward Gov. Syncronizing Motor Switch1
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2h5864 Air Vent Trap Group
2H***64Trap Group-Air Vent; Air Vent Trap Group1
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Gauges And Accessories
3n8268 Instrument Panel Box Gp
3n8277 Pyrometer Chart
3N***71Switch As-Selector; Switch--Selector1
3N***73Adapter-1/8" Pipe Thread; Adapter 1/8" Pipe Thread16
3N***75Pyrometer Group-Twin; Pyrometer Group--Twin1
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1w9492 Protective Lift Cover Group
1W***92Cover Group-Lift Eye Protection1
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3n3886 Tachometer Drive Group
5l9895 Gauge Gp
5L***95Gauge Group; -Engine Oil Pressure, Water Temperature1
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2w1771 Gauge Group-Oil Pressure Indicator Group-Replaces 5n6336
2W***71Gauge Group-Oil Press Indicator1
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5n6336 Oil Pressure Indicator Gauge Group-Type 2
5N***36Gauge Group-Oil Press Indicator1
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5n6336 Oil Pressure Indicator Gauge Group-Type 1
5N***36Gauge Group-Oil Press Indicator1
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5n8757 Magnetic Pickup Group
5N***57Magnetic Pickup Group; Magnetic Pick-Up Group1
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3n1589 Service Meter And Tachometer Drive Group
3N***89Meter Group-Service; Service Meter And Tachometer Drive Group1
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3n4830 Mounting Gp-Instrument Panel-R.H. & L.H.
3N***30Mounting Group-Instrument Panel1
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5n1624 Instrument Panel Mounting Group-R.H.
5N***24Mounting Group-Instrument Panel1
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7l4535 Tachometer Mounting Group
7L***35Mounting Group-Tachometer; Tachometer Mounting Group[[751
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3n4569 Instrument Panel Group-R.H. & L.H.-1200 R.P.M.
5n6976 Instrument Panel Group
5N***76Panel Group-Instrument; Instrument Panel Group1
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3n4566 Instrument Panel Gp
3n4568 Instrument Panel Group-Type 2
3n4567 Instrument Panel Gp
5n8975 Instrument Panel Group
5n8974 Instrument Panel Gp
3n4569 Instrument Panel Group-R.H. & L.H.-1200 Rpm 150 Degrees-200
3n4568 Instrument Panel Group-Type 1
3n8276 Pyrometer Group-Single
3N***12Pyrometer Group; Pyrometer-Single1
3N***74Wiring Diagram1
3N***76Pyrometer Group-Single; Pyrometer Group--Single1
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3n8275 Pyrometer Group-Twin
3N***16Pyrometer Group1
3N***74Wiring Diagram1
3N***75Pyrometer Group-Twin; Pyrometer Group--Twin1
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3n6723 Stub Shaft Group-Front Power Take-Off
5n8754 Tachometer Gp-Electric
3n6871 Electric Tachometer Group-0-2500 R.P.M.-Type 2
3N***71Tachometer Group-Electric; Tachometer Group1
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7c4357 Tachometer Gp-Electric
3n6871 Electric Tachometer Group-Type 1
3N***71Tachometer Group-Electric; Tachometer Group1
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7e3157 Tachometer Gp-Electric
Generators
7c2561 Connection Gp-Electric
5n4127 Generator Leads Connection Group
5N***27Connection Group-Generator Leads; Generator Leads Connection Group1
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5n4128 Generator Leads Connection Group
5N***28Connection Group-Generator Leads1
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9y0873 Connection Gp-Generator Leads
9Y***73Connection Group-Generator Leads1
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9y0903 Connection Gp-Terminal Strip
9Y***03Connection Group-Terminal Strip1
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9y2582 Connection Gp-Terminal Strip
9Y***82Connection Group-Terminal Strip1
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7c1435 Connection Gp-Terminal Strip
7C***35Connection Group-Terminal Strip1
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7l5479 Generator Drive Coupling Group
4w5918 Generator Coupling Group
8n7152 Coupling Gp-Generator-Flexible
3n8594 Protective Lift Cover Group
5n9421 Exciter & Heat Sink As
3n4692 Exciter And Regulator Assembly-Part 1 Of 2
3n4692 Exciter And Regulator Assembly-Part 2 Of 2
5n1862 Generator Fastener Group
8l48 Generator-3 Phase-End View
8l48 Generator - 3 Phase-Side View
5n8450 Generator Arrangement-480 Volt, 60 Hertz At 1200 R.P.M.
1W***48Plate-Serial Number On Upper R.H.Side Of1
1W***58Nameplate-Information1
2K***19Drive Screw--For Mounting Name Plate6
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5n679 Generator Arrangement-480 Volt, 60 Hertz At 1200 R.P.M.
1W***48Plate-Serial Number On Upper R.H.Side Of1
1W***58Nameplate-Information1
2K***19Drive Screw--For Mounting Name Plate6
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5n9549 Generator Arrangement-Power-600 Volts, 60 Hertz At 1200 R.P.M.
1W***45Film Lifting Instructions; Film-Lifting Instructions1
1W***48Film--Instruction--Lifting Eye Location1
1W***48Plate-Serial Number On Upper R.H.Side Of1
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7c3072 Generator Ar-Power
7C***72Generator Ar1
7W***85Generator Group1
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7c3073 Generator Ar-Power
7C***73Generator Ar1
7W***86Generator Group1
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5n8451 Generator Arrangement-600 Volt, 60 Hertz At 1200 R.P.M.
1W***48Plate-Serial Number On Upper R.H.Side Of1
1W***58Nameplate-Information1
2K***19Drive Screw--For Mounting Name Plate6
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5n0620 Generator Arrangement-230-460 Volt, 60 Hertz
1W***48Plate-Serial Number On Upper R.H.Side Of1
2K***19Drive Screw--For Mounting Name Plate6
5N***20Generator Ar1
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5n8449 Generator Arrangement-600 Volt, 60 Hertz At 1200 R.P.M.
1W***48Plate-Serial Number On Upper R.H.Side Of1
1W***58Nameplate-Information1
2K***19Drive Screw--For Mounting Name Plate6
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7c3076 Generator Ar-Power
7C***76Generator Ar1
7W***93Generator Group1
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5n8448 Generator Arrangement-480 Volt, 60 Hertz At 1200 R.P.M.
1W***48Plate-Serial Number On Upper R.H.Side Of1
1W***58Nameplate-Information1
2K***19Drive Screw--For Mounting Name Plate6
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7w8693 Generator Gp-Power Part 2 Of 2
5n7238 Generator Group-End View-Part 2 Of 2
5N***38Generator Group; Generator Group--Power1
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8l0047 Generator-3 Phase-Side View-Part 1 Of 2
8L***47Generator Group; Generator Group1
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7w8686 Generator Gp-Power- Part 1 Of 2
7w8693 Generator Gp-Power- Part 1 Of 2
5n7213 Generator Group-End View-Part 2 Of 2
5N***13Generator Group; Generator Group-------------------------1
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7w8685 Generator Gp-Power- Part 2 Of 2
5n7212 Generator Group-Side View-Part 1 Of 2-Type 1
5N***12Generator Group; Generator Group-------------------------1
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8l0047 Generator Gp-Part 2 Of 2
8L***47Generator Group; Generator Group1
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5n0431 Generator Group-Side View-Part 1 Of 2
5N***31Generator Group; Generator Group1
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8l0047 Generator Gp-Part 1 Of 2
8L***47Generator Group; Generator Group1
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5n7212 Generator Group-Side View-Part 1 Of 2
5N***12Generator Group; Generator Group-------------------------1
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5n7214 Generator Group-3 Phase-Side View-Part 1 Of 2
5N***14Generator Group; Generator Group-------------------------1
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5n7212 Generator Group-End View-Part 2 Of 2
5N***12Generator Group; Generator Group-------------------------1
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5n7212 Generator Group-End View-Part 2 Of 2-Type 2
5N***12Generator Group; Generator Group-------------------------1
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8l91 Generator-3 Phase-Side View-Part 2 Of 3
5n7215 Generator Group-Side View-Part 1 Of 2
5N***15Generator Group; Generator Group-------------------------1
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8l0047 Generator-3 Phase-End View-Part 2 Of 2
8L***47Generator Group; Generator Group1
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5n7213 Generator Group-Side View-Part 1 Of 2
5N***13Generator Group; Generator Group-------------------------1
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5n7214 Generator Group-End View-Part 2 Of 2-Type 2
5N***14Generator Group; Generator Group-------------------------1
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5n7214 Generator Group-Side View-Part 1 Of 2-Type 1
5N***14Generator Group; Generator Group-------------------------1
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8l0047 Generator Group-3 Phase-End View-Part 2 Of 2
8L***47Generator Group; Generator Group1
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5n7213 Generator Group-3 Phase-Side View-Part 1 Of 2
5N***13Generator Group; Generator Group-------------------------1
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5n0431 Generator Group-End View-Part 2 Of 2
5N***31Generator Group; Generator Group1
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8l0047 Generator Group-3 Phase-Side View-Part 1 Of 2
5n7212 Generator Group-Side View-Part 1 Of 2-Type 2
5N***12Generator Group; Generator Group-------------------------1
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5n7215 Generator Group-Side View-Part 2 Of 2
5N***15Generator Group; Generator Group-------------------------1
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7w8686 Generator Gp-Power- Part 2 Of 2
5n7214 Generator Group-End View-Part 2 Of 2-Type 1
5N***14Generator Group; Generator Group-------------------------1
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5n7215 Generator Group-End View-Part 2 Of 2
5N***15Generator Group; Generator Group-------------------------1
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5n7214 Generator Group-3 Phase-End View-Part 2 Of 2
5N***14Generator Group; Generator Group-------------------------1
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5n7214 Generator Group-Side View-Part 1 Of 2-Type 2
5N***14Generator Group; Generator Group-------------------------1
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8l91 Generator-3 Phase-Side View-Part 1 Of 3
5n7212 Generator Group-End View-Part 2 Of 2-Type 1
5N***12Generator Group; Generator Group-------------------------1
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7w8685 Generator Gp-Power- Part 1 Of 2
5n7238 Generator Group-Side View-Part 1 Of 2
5N***38Generator Group; Generator Group--Power1
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5n7213 Generator Group-3 Phase-End View-Part 2 Of 2
5N***13Generator Group; Generator Group-------------------------1
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8l91 Generator-3 Phase-End View-Part 3 Of 3
8f9866 Grease Gun
9y7174 Heat Sink As-Negative
5n5030 Heat Sink As-Negative
5n5027 Heat Sink As-Positive
9y7175 Heat Sink As-Positive
7l7791 Generator Installation Arrangement-Type 2
8n7151 Installation Ar
7l7791 Generator Installation Arrangement - Type 1
7w8708 Installation Ar
3n8683 Generator Installation Arrangement
3n9147 Marine Society Spare Parts Kit-Part 2-Auxiliary
2S***64Pump Assembly--Fuel Injection1
3N***47Kit-Marine Spare Parts1
5H***25Packing Nut Fuel Injector; (1-11/16-Thd)8
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3n9147 Marine Society Spare Parts Kit-Part 1-Auxiliary
1F***23Gasket Side Cover--Cylinder Block2
1P***58Bolt Connecting Rod2
2N***36Gasket Exhaust Manifold To Head2
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5n3726 Marine Society Generator Spare Parts Kit An Attachment
1N***56Brush-Alternator; Brush Alternator4
3L***91Tube (Long)-(Part Of 3l***90 Assem.)2
3L***92Tube (Short)-(Part Of 3l***90 Assem.)2
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7w9577 Kit-Space Heater
7w9986 Kit-Space Heater
3n5495 Generator Mounting Group
5n9195 Generator Mounting Group
5n9093 Voltage Regulator Assembly
5N***93Regulator As; (Voltage-Self Excited)1
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5n5100 Regulator Assembly
5n5103 Regulator Assembly
5n5081 Voltage Regulator Assembly
5N***81Regulator As; (Voltage-Perm. Magnet)1
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5n9481 Regulator Assembly
5n9478 Regulator Assembly
5n664 Rotor Assembly
1w9148 Rotor Assembly
5n9489 Rotor Assembly
5n0596 Rotor Ass
5n0596 Rotor As
7c2711 Rotor As
5n630 Rotor Assembly
7c2713 Rotor As
5n9254 Power Module Support Group
5n9129 Power Module Support Group
5n9260 Walkway Group
1w6117 Walkway Group-2 Required
5n9126 Walkway Group-354mm (14 In.) X 1795mm (71 In.)
5n9119 Walkway Group-595mm (23 In.) X 1988mm (78 In.)
5n9123 Walkway Group-354mm (14 In.) X 1195mm (47 In.)
5n9262 Walkway Group
Lubrication System
5n6126 Oil Filter Adapter Group
3n0961 Breather Group
7n8417 Oil Filter Assembly
2n0885 Oil Filter Group
2N***85Filter Group-Oil; Oil Filter Group1
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3n3222 Oil Filter Group-Part 3 Of 3-Type 1
3n3222 Oil Filter Group-Part 1 Of 3-Type 2
3n3222 Oil Filter Group-Part 1 Of 3-Type 1
3n3222 Oil Filter Group-Part 3 Of 3-Type 2
3n3222 Oil Filter Group-Part 2 Of 3-Type 2
3n3222 Oil Filter Group-Part 2 Of 3-Type 1
4w0708 Fumes Disposal Group
3n9716 Filter Lines Group
5n8202 Manifold Assembly-Oil Pump Outlet-Field Installation
4K***88Seal; Adapter To Oil Pump Outlet Manifold3
4L***66Dowel-Hollow4
5N***01Manifold1
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3n2644 Mounting Gp-Prelube Pump
3N***44Mounting Group-Prelube Pump; Prelubrication Pump Mounting Group1
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3n2644 M0unting Gp-Prelube Pump
3N***44Mounting Group-Prelube Pump; Prelubrication Pump Mounting Group1
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2n2465 Prelubrication Oil Pump Group
6n5598 Prelubrication Pump And Motor Assembly-32 Volt-Dc
6n5599 Prelubrication Pump And Motor Assembly-24 Volt-Dc
7n0175 Pump And Motor Group-Type 2
7n0175 Pump And Motor Group-Type 1
3n0592 Pump And Motor Assembly-Type 1
3n0592 Pump And Motor Assembly-Type 2
5n4413 Oil Pump Group-One Section Gear
5n4412 Oil Pump Group-One Section Gear
8n2744 Oil Pump Group
5n3802 Oil Pump Group
3n7384 Prelubrication Pump Group-24 Volt-Dc
2n6700 Prelubrication Pump Group-32 Volt-Dc
5n3643 Prelubrication Pump Group-230 Volt-Ac-50 Hertz
2w0653 Prelubrication Pump Group-50 Hertz
2n6702 Prelubrication Oil Pump Group-110 Volt
8l4992 Sump Pump Group
2n8908 Sump Pump Group
8l5039 Oil Level Regulator Group
1n9924 Check Valve Assembly
3n3128 Diverter Valve Group
Service Equipment And Supplies
Gasket Kits
5P***70Single Cylinder Liner0
6V***36Turbocharger Mounting0
6V***37Aftercooler And Aftercooler Lines0
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Name Plates And Transfers
1H***50Plate-Notice; On L.H. Front Side Cover & Rear R.H. Cover2
3N***90Plate Serial Number; On R.H. Rear Bank Of Cylinder Block As Viewed From Rear Of Engine1
4B***58Screw (Identification Plate) Mounting2
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5n9206 Accessory Plate And Decal Group
1P***07Film-Symbol; 2 On Bottom Of Upper Frame Below Engine. 2 On Front Of Upper Frame Above Boom Articulation4
3N***91Film-Information; (Do Not Lift Pictograph)4
3N***44Film-Information; (Center Of Gravity)4
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9s7977 Hand Tool Group
Starting And Electrical System
7c1900 Battery Gp-24 Volt, 100 Ampere - Maintenance Free
7l7871 Battery Gp-24 Volt, 172 Ampere (925 Cca)
7L***71Battery Group; (24-Volt)(24-Volt)1
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3n4654 Battery Group-30 Volt, 300 Ampere Hours
7c1899 Battery Gp
2n1943 Battery Group-30 Volt, 172 Ampere Hours
7l7872 Battery Gp-24 Volt, 220 Ampere
3n4653 Battery Group-24 Volt, 300 Ampere Hours
5l8716 Air Starting Motor Group-L.H.-S.A.E.Standard Engine Rotation
5L***16Air Starting Motor Group-L.H.-S.A.E.Standard Engine Rotation1
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3n7683 Alternator Group-24 Volt, 60 Ampere
4n3987 Alternator Group-32 Volt, 60 Ampere-Side View*R
4N***87Alternator Group; Alternator Group1
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3n7684 Alternator Group-30 Or 32 Volt, 60 Ampere
4n3987 Alternator Group-32 Volt, 60 Ampere-End View*R
4N***87Alternator Group; Alternator Group1
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4n3986 Alternator Group-24 Volt, 60 Ampere-Side View*R
4N***86Alternator Group-Charging; (24-Volt, 60-Ampere)(24-Volt, 60-Ampere)1
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4n3986 Alternator Group-24 Volt, 60 Ampere-End View*R
4N***86Alternator Group-Charging; (24-Volt, 60-Ampere)(24-Volt, 60-Ampere)1
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Battery Charger
6L***27Battery Charger; Battery Chargers-120 Volt Input0
6L***11Battery Charger; Battery Charger--240 Volt Input0
6L***11Battery Charger; Battery Charger--208 Volt Input0
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3n6867 Contactor Group-Oil Pressure And Water Temperature
3N***67Contactor Group; Oil Pressure And Water Temperature Contactor Group1
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3n8979 Contactor Gp
3n7428 Contactor Group
4w1496 Alarm Contactor Group-Oil Pressure & Water Temperature
5n1601 Overspeed Contactor Group-Type 2
5n1601 Overspeed Contactor Group-Type 1
5n1601 Contactor Gp-Overspeed
3n2976 Safety Shut-Off Group
3N***76Cover Group-Governor; Governor Drive Housing Cover Group1
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5n5176 Diode Group
3n0857 Junction Box Group
3N***57Junction Box Group; Junction Box Group1
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5n8641 Air Control Lines Group-L.H.
5n8642 Air Control Lines Group-R.H.-Replaced By 2w7127 & 2w7128-
2w7127 Air Control Lines Group-L.H.
2w7128 Air Control Lines Group-R.H.
5n4477 Shut-Off Engine Oil Lines Group-Part 2 Of 3-Type 3
5n4477 Shut-Off Engine Oil Lines Group-Part 1 Of 3-Type 2
5n4477 Shut-Off Engine Oil Lines Group-Part 1 Of 3-Type 1
5n4477 Shut-Off Engine Oil Lines Group-Part 1 Of 3-Type 3
5n4477 Shut-Off Engine Oil Lines Group-Part 3 Of 3-Type 3
5n4477 Shut-Off Engine Oil Lines Group-Part 2 Of 3-Type 2
5n4477 Shut-Off Engine Oil Lines Group-Part 2 Of 3-Type 1
5n4477 Shut-Off Engine Oil Lines Group-Part 3 Of 3-Type 1
5n4477 Shut-Off Engine Oil Lines Group-Part 3 Of 3-Type 2
5n8636 Shut-Off Lines Group-Part 1 Of 3-Type 1
5n8636 Shut-Off Lines Group-Part 2 Of 3-Type 1
5n8636 Shut-Off Lines Group-Part 3 Of 3-Type 2
5n8636 Shut-Off Lines Group-Part 2 Of 3-Type 2
5n8636 Shut-Off Lines Group-Part 3 Of 3-Type 1
5n8636 Shut-Off Lines Group-Part 1 Of 3-Type 2
4n7556 Air Motor Lubricator Group
8l5939 Motor Assembly--R.H.-32 Volt-Part 2 Of 2
8l5939 Motor Assembly-R.H.-32 Volt-Part 1 Of 2
3n7350 Alternator Mounting Group
5n4107 Contactor Mounting Group
3n6527 Contactor Mounting Group
5n4039 Contactor Mounting Group-R.H.
5n3994 Contactor Mounting Group-L.H.
3n7675 Glow Plug Mounting Group
Multi-Function Diverter Valve Group
4W***08Valve Group-Diverter; -Remote Routine Shut-Off 24/32 Volt Dc For Use With Air Start Motor0
5N***19Diverter Valve Group; -Remove Routine Shut -Off .24/32 Volt Dc For Use With 24 Volt Dc Electric Start0
5N***20Diverter Valve Group; -Pneumatic Remote Shut-Off For Use With Air Start Motor0
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Multi-Function Diverter Valve Groups
5N***23Diverter Valve Group; -Remote Routine Shut -Off .24/32 Volt Dc For Use With Air Start With Prelube Pump0
5N***24Diverter Valve Group; For Use With Air Start With Prelube Pump0
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3n7680 Glow Plug Group-32 Volt-8 Required
3n7679 Glow Plug Group-24 Volt-8 Required
3n0706 Prelubrication Pump And Motor Assembly
2w0964 Gerotor Pump Group
5n5992 Oil Pump Group-Type 1
5n5992 Oil Pump Group-Type 2
6l5397 Regulator Assembly-32 Volt
7w3355 Magnetic Pickup Gp
7W***55Sensor Group-Speed; -Engine Timing1
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8l4264 Manual Shut-Off Group
8L***64Shutoff Group; Manual Shut-Off Group1
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5n4556 Air Shut-Off Group-Hydrualic-Type 3
5n4558 Air Shut-Off Group-Electric-Type 1
3n8924 Air Shut-Off Group
5n4556 Air Shut-Off Group-Hydraulic-Type 1
5n4558 Air Shut-Off Group-Electric-Type 2
2w8817 Air Shut-Off Group
5n4556 Air Shut-Off Group-Hydraulic-Type 2
5n5994 Control Shut-Off Group-Oil Pressure, Water Temperature & Overspeed-
5n5993 Control Shut-Off Group-Part 1 Of 2-Type 2
5n5993 Control Shut-Off Group-Part 1 Of 2-Type 1
5n5993 Control Shut-Off Group-Part 2 Of 2-Type 2
5n5993 Control Shut-Off Group-Part 2 Of 2-Type 1
5n5762 Rack Shut-Off Group-Oil Pressure
5n7188 Remote Shut-Off Group-Routine-24/32 Volt
5n5880 Remote Shut-Off Group
5n7187 Remote Shut-Off Group-Routine-Air Operated
3n9492 Air Starting Silencer Group
5n8762 Air Starting Silencer Group
3t5051 Solenoid Assembly
3l2871 Solenoid Assembly-24 Or 32 Volt
3t3421 Solenoid Assembly
3t5439 Solenoid Assembly
3t8635 Solenoid Assembly-24 Volt
7t8854 Solenoid Assembly-24 Volt
5n6158 Solenoid Shut-Off Group
4w9863 Spring Group-Shut-Off
5l5353 Starting Motor Assembly-24 Volt-Part 1 Of 2
5l5353 Starting Motor Assembly-24 Volt-Part 2 Of 2
8l5937 Motor Assembly-L.H.-32 Volt-Part 1 Of 2
5l3648 Electric Starting Motor Assembly-24 Volt-Part 2 Of 2
5l3648 Electric Starting Motor Assembly-24 Volt-Part 1 Of 2
8l5937 Motor Assembly-L.H.-32 Volt-Part 2 Of 2
7c4214 Starting Motor Gp-Air-Standard Rotation
5n8726 Air Starting Motor Group-L.H.-Type 2
5n8721 Motor Gp-Air Starting & Prelubrication-Part 2 Of 2
3n9572 Air Starting Motor Group-L.H.-115 Volt-Part 2 Of 2-Type 1
4w5104 Motor Gp-Air Starting
5n8726 Air Starting Motor Group-L.H.-Part 2 Of 2-Type 1
5n8727 Motor Gp-Air Starting & Prelubrication-Part 2 Of 2
3n9574 Air Starting Motor Group-L.H.-Part 2 Of 2
5n8718 Air Starting Motor Group-R.H.-Type 2
4w5109 Motor Gp-Air Starting
5n8724 Air Starting Motor Group-L.H.-115 Volt-Part 1 Of 2-Type 2
3n9568 Air Starting And Prelubrication Motor Group-R.H.-Part 2 Of 2
3n9570 Air Starting Motor Group-R.H.-115 Volt-Part 2 Of 2-Type 1
5n8721 Motor Gp-Air Starting & Prelubrication-Part 1 Of 2
5n8722 Air Starting Motor Group-R.H.-115 Volt-Part 1 Of 2-Type 1
4w5107 Starting Motor Gp-Air
4W***07Starting Motor Group-Air; -Vane1
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3n9411 Starting Motor Gp-Air
5n8775 Air Starting Motor Group
5n8720 Air Starting Motor Group-R.H.-Part 2 Of 2-Type 1
4w5103 Air Starting Motor Group
5n8718 Air Starting Motor Group-R.H.-Type 1
4w5101 Air Starting Motor Group
8n8474 Air Starting Motor Group
5n8722 Air Starting Motor Group-R.H.-115 Volt-Part 2 Of 2-Type 1
3n9572 Air Starting Motor Group-L.H.-115 Volt-Part 2 Of 2-Type 2
5n8722 Air Starting Motor Group-R.H.115 Volt-Part 1 Of 2-Type 2
5n8774 Motor Gp-Air Starting
5n8724 Air Starting Motor Group-L.H.-115 Volt-Part 1 Of 2-Type 1
5n8776 Motor Gp-Air Starting
3n9570 Air Starting Motor Group-R.H.-115 Volt-Part 1 Of 2-Type 2
3n9572 Air Starting Motor Group-L.H.-115 Volt-Part 1 Of 2-Type 2
3n9572 Starting Motor Group-L.H.-115 Volt-Part 1 Of 2-Type 1
5n8724 Air Starting Motor Group-L.H.-115 Volt-Part 2 Of 2-Type 1
3n9570 Air Starting Motor Group-R.H.-115 Volt-Part 2 Of 2-Type 2
3n9413 Air Starting Motor Group
5n8727 Motor Gp-Air Starting & Prelubrication-Part 1 Of 2
5n8720 Air Starting Motor Grop-R.H.-Part 1 Of 2-Type 1
4w5102 Motor Gp-Air Starting
5n8727 Motor Gp-Air Starting & Prelubrication
3n9568 Air Starting And Prelubrication Motor Group-R.H.-Part 1 Of 2
5n8716 Air Starting Motor Group-L.H.-Type 1
5n8724 Air Starting Motor Group-L.H.-115 Volt-Part 2 Of 2-Type 2
5n8716 Air Starting Motor Group-L.H.-Type 2
5n8773 Air Starting Motor Group
5n8726 Air Starting Motor Group-L.H.-Part 1 Of 2-Type 1
8n8418 Air Starting Motor Group
5n8722 Air Starting Motor Group-R.H.-115 Volt-Part 2 Of 2-Type 2
3n9574 Air Starting Motor Group-L.H.-Part 1 Of 2
3n9570 Air Starting Motor Group-R.H.-115 Volt-Part 1 Of 2-Type 1
5n8720 Air Starting Motor Group-R.H.-Type 2
6t0640 Electric Starting Motor Group-24 Volt-Prestolite-Part 1 Of 2
6T***40Starting Motor Group-Electric; Electric Starting Motor Group (Prestolite)1
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3n7379 Electric Starting Motor Group-24 Volt-Type 4
3t8953 Electric Starting Motor Group-24 Volt-Part 1 Of 3-Type 1
3T***53Starting Motor Group-Electric; Electric Starting Motor Group (Delco-Remy)1
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3t8953 Electric Starting Motor Group-24 Volt-Part 3 Of 3-Type 2
3T***53Starting Motor Group-Electric; Electric Starting Motor Group (Delco-Remy)1
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3t8949 Electric Starting Motor Group-24 Volt-Part 2 Of 3-Type 1
3T***49Starting Motor Group-Electric; Electric Starting Motor Group (Delco Remy)1
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3n0741 Electric Starting Motor Group-32 Volt-Type 2
3N***41Starting Motor Group-Electric; Starting Motor Group1
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3t8953 Electric Starting Motor Group-24 Volt-Part 1 Of 3-Type 2
3T***53Starting Motor Group-Electric; Electric Starting Motor Group (Delco-Remy)1
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3t2785 Electric Starting Motor Group-24 Volt-Part 3 Of 3
6n9677 Electric Starting Motor Group-24 Volt-Part 3 Of 3
3n0741 Electric Starting Motor Group-32 Volt-Type 1
3N***41Starting Motor Group-Electric; Starting Motor Group1
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3t8948 Electric Starting Motor Group-32 Volt-Delco-Remy-Part 2 Of 3
3t8953 Electric Starting Motor Group-24 Volt-Part 3 Of 3-Type 1
3T***53Starting Motor Group-Electric; Electric Starting Motor Group (Delco-Remy)1
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3t8955 Starting Motor Gp-Electric-Part 2 Of 3
6n9677 Electric Starting Motor Group-24 Volt-Part 1 Of 3
3t2787 Electric Starting Motor Group-24 Volt-Part 1 Of 2
6t0647 Starting Motor Gp-Electric
6T***47Starting Motor Group-Electric; Starting Motor Gp-Electric-Delco Remy1
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3t8944 Electric Starting Motor Group-32 Volt-Delco-Remy-Part 2 Of 3*R
6t0640 Electric Starting Motor Group-24 Volt-Prestolite-Part 2 Of 2
6T***40Starting Motor Group-Electric; Electric Starting Motor Group (Prestolite)1
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3n7379 Electric Starting Motor Group-24 Volt-Type 3
3n7379 Electric Starting Motor Group-24 Volt-Type 2
7g7906 Electric Starting Motor Group-24 Volt-Prestolite-Part 2 Of 2
7G***06Starting Motor Group-Electric; Electric Starting Motor Group (Prestolite)1
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6l2747 Electric Starting Group-32 Volt-Sae Standard Engine Rotation-Type 3
3t2774 Electric Starting Motor Group-32 Volt-Part 3 Of 3-*R
3t8948 Electric Starting Motor Group-32 Volt-Delco-Remy-Part 1 Of 3
3n7379 Electric Starting Motor Group-24 Volt-Type 1
3t8953 Electric Starting Motor Group-24 Volt-Part 2 Of 3-Type 2
3T***53Starting Motor Group-Electric; Electric Starting Motor Group (Delco-Remy)1
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3t8944 Electric Starting Motor Group-32 Volt-Delco-Remy-Part 1 Of 3*R
3t8955 Starting Motor Gp-Electric-Part 3 Of 3
6n9677 Electric Starting Motor Group-24 Volt-Part 2 Of 3
3t8943 Electric Starting Motor Group-32 Volt-Delco-Remy-Part 2 Of 3
3t2785 Electric Starting Motor Group-24 Volt-Part 1 Of 3
3t8949 Electric Starting Motor Group-24 Volt-Part 2 Of 3-Type 2
3T***49Starting Motor Group-Electric; Electric Starting Motor Group (Delco Remy)1
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3t2779 Starting Motor Gp-Electric-24 Or 32 Volt
3t8967 Starting Motor Gp-Electric*R
3T***67Starting Motor Group-Electric; -24 Volt1
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3t2787 Electric Starting Motor Group-24 Volt-Part 2 Of 2
6l2747 Electric Starting Group-32 Volt-Sae Standard Engine Rotation-Type 1
3t8948 Electric Starting Motor Group-32 Volt-Delco-Remy-Part 3 Of 3
6l2747 Electric Starting Group-32 Volt-Sae Standard Engine Rotation-Type 2
3t8953 Electric Starting Motor Group-24 Volt-Part 2 Of 3-Type 1
3T***53Starting Motor Group-Electric; Electric Starting Motor Group (Delco-Remy)1
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3t2785 Electric Starting Motor Group-24 Volt-Part 2 Of 3
3t8949 Electric Starting Motor Group-24 Volt-Part 3 Of 3-Type 1
3T***49Starting Motor Group-Electric; Electric Starting Motor Group (Delco Remy)1
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3t8943 Electric Starting Motor Group-32 Volt-Delco-Remy-Part 1 Of 3
3t8943 Electric Starting Motor Group-32 Volt-Delco-Remy-Part 3 Of 3
6t0647 Electric Starting Motor Group-24 Volt
3T***53Starting Motor Group-Electric; Electric Starting Motor Group (Delco-Remy)1
6T***47Starting Motor Group-Electric; Starting Motor Gp-Electric-Delco Remy1
7G***06Starting Motor Group-Electric; Electric Starting Motor Group (Prestolite)1
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3t2774 Electric Starting Motor Group-32 Volt-Part 2 Of 3-*R
3t8967 Starting Motor Gp-Electric-24 Volt*R
3T***49Starting Motor Group-Electric; Electric Starting Motor Group (Delco Remy)1
3T***67Starting Motor Group-Electric; -24 Volt1
6T***40Starting Motor Group-Electric; Electric Starting Motor Group (Prestolite)1
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3t8955 Starting Motor Gp-Electric-Part 1 Of 3
3t8949 Electric Starting Motor Group-24 Volt-Part 3 Of 3-Type 2
3T***49Starting Motor Group-Electric; Electric Starting Motor Group (Delco Remy)1
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3t8944 Electric Starting Motor Group-32 Volt-Delco-Remy-Part 3 Of 3*R
3t2774 Electric Starting Motor Group-32 Volt-Part 1 Of 3-*R
3t2773 Electric Starting Motor Group-24-32 Volt
3t8949 Electric Starting Motor Group-24 Volt-Part 1 Of 3-Type 2
3T***49Starting Motor Group-Electric; Electric Starting Motor Group (Delco Remy)1
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3t8949 Electric Starting Motor Group-24 Volt-Part 1 Of 3-Type 1
3T***49Starting Motor Group-Electric; Electric Starting Motor Group (Delco Remy)1
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3n0741 Motor Gp-Electric Starting
3N***41Starting Motor Group-Electric; Starting Motor Group1
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7g7906 Electric Starting Motor Group-24 Volt-Prestolite-Part 1 Of 2
7G***06Starting Motor Group-Electric; Electric Starting Motor Group (Prestolite)1
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5l8595 Solenoid Switch Assembly
4m1812 Solenoid Switch Assembly
5n8771 Switch Group
5n8769 Switch Group
9g1480 Switch Group
1l5010 Air Receiver Group-10.5 Cubic Foot Capacity
7n1269 Terminal Assembly
5n2718 Valve Group
5n6443 Control Valve Group
5n6665 Air Control Valve Group-R.H.
5n2846 Regulating And Pressure Reducing Valve Group-Air Start
5n6664 Air Control Valve Group-L.H.
4w1704 Diverter Valve Group
4W***04Valve Group-Diverter; (Diverter)1
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4w1701 Diverter Valve Group-24/32 Vdc Remote Routine Shut-Off
4w1708 Diverter Valve Group
4W***08Valve Group-Diverter; -Remote Routine Shut-Off 24/32 Volt Dc For Use With Air Start Motor1
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4w1703 Diverter Valve Group-Pneumatic Remote Routine Shut-Off
5n5990 Pressure Control Valve Group
1l2073 Regulating Valve Group
1L***73Valve Group-Pressure Reducing; -Rh1
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5d0470 Quick Release Valve Group
5D***70Valve Group-Quick Release; -Parking Brake-Air1
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5n6651 Solenoid Valve Group-Type 1
5n6651 Solenoid Valve Group-Type 2
5n6406 Solenoid Valve Group
3l9922 Whistle Valve Group
8l4849 Wiring Group
05***71Grommet-Junction Box1
1H***18Grommet--Junction Box1
1H***66Clip-Wire Provides Loose Parts6
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4l1192 Wiring Gp
05***71Grommet-Junction Box1
1H***66Clip-Wire Provides Loose Parts4
2L***65Terminal; (10-Ga To 12-Ga)(Relay Switch "C" & "B")6
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3l6655 Wiring Kit Group
1H***66Clip-Wire Provides Loose Parts2
1L***99Marker-(Wire Code)1
2L***52Terminal; (6-Ga, 3/8-In)(6 Gauge/9.53mm(.375in)Screw)1
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6l4407 Wiring Group
2L***49Terminal-Ring 6 Ga. (No. 10 Screw)1
2L***51Terminal-Ring; (6-Ga, 5/16-In Screw)1
2L***52Terminal; (6-Ga, 3/8-In)(6 Gauge/9.53mm(.375in)Screw)1
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D399 serial number reference

The engine serial/ID plate on a D399 is a small metal tag riveted to the block, typically on the left side near the fuel injection pump housing; the number is also stamped directly into the block as a backup if the tag is lost or unreadable. The first three characters are the prefix, which ties the unit to a specific model and configuration (genset, industrial, or marine); the digits that follow are the sequential unit number within that prefix block.

PrefixIdentifies
36ZD399 generator set engine
35BD399 industrial engine
91BD399 marine engine

Frequently asked questions

What engine powers the Caterpillar D399?

The D399 designation is the engine itself: a Caterpillar V16, four-stroke-cycle diesel with a 159 mm x 203 mm (6.25 in x 8.0 in) bore and stroke and roughly 64.4 L (3,927 cu in) displacement. It's mechanically governed with no ECM, water-cooled, and rated approximately 1,000-1,310 hp (746-977 kW) at 1,200-1,300 rpm depending on whether it's the naturally aspirated base engine or the turbocharged-aftercooled D399B PCTA/D399TA variant. It's part of the D379 (V8) / D398 (V12) / D399 (V16) family sharing the same bore, stroke, and fuel-injection architecture.

What is the operating weight of the Caterpillar D399?

Since the D399 is a stationary/marine engine, not a chassis machine, there's no ground-engaging operating weight to quote. Dry weight for the bare V16 long block runs into several tons on its own; a complete generator-set skid package (engine, generator end, radiator or heat exchanger, control panel) typically falls in the range of about 7,260-13,600 kg (16,000-30,000 lb), varying widely with the generator end, cooling arrangement, and control equipment fitted. Confirm the actual package weight against the specific unit's nameplate or shipping documentation.

What replaced the Caterpillar D399?

There's no single Cat model number that directly replaced the D399. Production of the mechanically governed D379/D398/D399 family wound down without a badge-for-badge successor; Cat's later large-bore industrial, marine, and generator-set diesel lineup eventually covered similar duty classes with newer, electronically managed designs, but none of them is a renamed continuation of the D399 block. In practice, a D399 in service today gets kept running through overhaul and rebuild rather than swapped for a same-numbered replacement.

What D399 owners discuss

What starting systems does the D399 use, and what field issues come up with each?
Both air start and electric start with an engine-driven prelube pump show up on these sets, and which one is fitted changes daily habits more than the diesel underneath does. Air-start motors need clean, dry, oil-free air; supply pressure is generally capped around 1030 kPa (150 psi), and feeding a hotter or higher-pressure line in does not crank it faster, it just shortens starter life. A set that only turns over and fires while someone holds the start lever down, then dies the moment it is released, usually has a weak or sticking pilot/solenoid valve in the air-start circuit rather than a fuel problem. On electric-start, cold-weather-spec units wired the intake preheat into the same circuit as the prelube pump, so prelubing before a start also warms the precombustion chambers - that is normal wiring on these sets, not a fault. Air-starter rebuild work and pressure-relief settings are safety items - have your dealer verify before putting a rebuilt air starter back into service.
The genset speed hunts or surges under load - is that a sensor fault or a fuel-system problem?
Neither, in the way a modern engine owner would expect. The D399 runs a mechanical-hydraulic governor with no ECM and no fault codes to read, so a rough governor is diagnosed by hand, not with a scan tool. Worn or out-of-adjustment governor linkage is the most commonly cited cause of hunting or surging as load steps on and off, more often than an actual fuel-system fault. Some paralleling or utility-tied sets had a Woodward electric actuator added on top of the base mechanical governor to tighten isochronous speed control - that is a control-loop add-on, not a different base engine, so confirm which setup you actually have before chasing a frequency-drift complaint as a fuel-pump issue.
What cooling-system quirks do owners and mechanics flag on the D399?
Two come up repeatedly. First, marine and raw-water-cooled installs run a different circuit than a radiator- or heat-exchanger-cooled industrial or standby set, so do not assume a coolant spec or a fix that works on one carries over to the other. Second, the tube-type oil cooler sits inside the coolant circuit, and a split or fouled tube lets oil and coolant cross-contaminate. The usual first symptom is unexplained low oil pressure or milky oil, not a coolant temperature spike, so a sudden oil-pressure complaint on one of these is worth checking against the oil cooler before assuming a bearing has failed.
What should I know about the D399 fuel system and injectors before doing my own service?
These engines run a sleeve-metering fuel system: one injection pump per cylinder, all housed together, feeding either precombustion-chamber or direct-injection valves depending on how the particular engine is arranged. Fuel quantity per cylinder is set by rotating a metering sleeve on each pump through governor-linked linkage, so the whole bank of pumps has to stay synchronized with each other. A cylinder that will not fire even though the piston is clearly pumping is more often a stuck plunger, worn barrel, or fouled injection valve than a true compression problem, and it gets misdiagnosed as the latter fairly often. Pump and valve calibration on this fuel system is a bench job, not a wrench-and-eyeball adjustment - have your dealer verify timing and output before condemning a cylinder or an injection pump.
How many hours can I expect between overhauls, and does duty cycle matter?
Community estimates commonly put a well-maintained D399, with oil and coolant kept in spec and no history of running low on either, in the range of roughly 20,000 to 30,000 hours between major overhauls, but that figure moves a lot with how the engine was actually run, so treat it as a range rather than a guarantee, and it varies by series and configuration. Continuous-duty marine or prime-power service tends toward the higher end; standby sets that only ever get a brief no-load test and never see a real load can build up unburned fuel and carbon (wet stacking) despite a low hour-meter reading, which shortens practical life well before the meter suggests. Main and rod bearings are the wear item mechanics point to most often on these V16s - each crank journal carries two connecting rods, so journal loading runs higher than on a comparable inline engine, and a rumble or knock plus metal in a drained oil sample calls for a bearing inspection ahead of more running hours. Bearing and crankshaft work is safety-critical - have your dealer verify clearances before returning the engine to service.
The engine runs fine at rated speed but the generator end will not build voltage - where is the problem?
On these older sets that is almost always the excitation circuit, not the diesel. If speed and frequency read correctly but output voltage is low or absent, suspect the exciter field or the automatic voltage regulator before looking at the engine side at all. Loose or corroded ground and control connections are a common root cause - intermittent contact here causes voltage spikes that can damage a regulator, so check continuity before swapping parts. This work is done on a running, energized generator - have your dealer or a qualified generator electrician verify the excitation circuit and regulator settings before working on live generator wiring.
What should I check before buying a used D399 engine or generator set?
Confirm the exact build off the dataplate before comparing prices: naturally aspirated vs turbocharged-aftercooled, and precombustion-chamber vs direct-injection valves, since power rating and fuel figures vary by arrangement and not just by hour meter. Pull an oil sample and listen for a rod or main knock at idle before load - bearing wear is the most flagged mechanical issue on these engines. Check the oil cooler and coolant circuit for any history of oil and coolant cross-contamination. Verify the generator end and exciter/regulator hardware actually fitted match the nameplate kW and voltage, since control components on a decades-old set are often swapped or retrofitted from original spec. Ask for load-bank test records, not just a no-load start-up - a standby set with only no-load history carries a wet-stacking risk a quick startup will not reveal. Finally, match the starting system on the unit to what your site can support: air start needs a clean, dry, correctly regulated air supply, which not every site has ready.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

Serial-range & configuration variants

This page covers the Caterpillar D399. Related factory variants of the same model family:

D399D399

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