Caterpillar PM3456
Caterpillarengine - generator setpower module

Caterpillar PM3456

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar PM3456 is a packaged industrial power module - an engine-generator set built around the Cat 3456 ATAAC diesel, an inline-six, turbocharged air-to-air aftercooled engine displacing 15.8 L (964 in³) with a 140 mm x 171 mm (5.5 in x 6.7 in) bore and stroke and roughly 16.0:1 compression. Cat built the PM3456 from around 2001 to 2005, controlled by an EMCP II or EMCP II+ panel depending on build date, under serial prefix B3G. Documented rated output runs from roughly 300 kW up to 500 kW depending on configuration, standby vs. prime duty, and rated speed - varies by configuration/series. Cat offered it as an open skid-mounted set, a sound-attenuated enclosure, and a trailer-mounted or containerized package for rental and rapid-deployment power. It has no direct model predecessor or successor in the excavator-lineage sense; it sits inside Cat's 3456-engine power-module family alongside related industrial and rental siblings.

Across its production run, the main variation is in packaging and control generation rather than the core engine: EMCP II gave way to EMCP II+ with expanded metering and alarm handling, and the same 3456 ATAAC block was shared with Cat's XQ-series rental power modules (XQ300, XQ400, and similar) at comparable ratings. Cat later re-engined its newer XQ350/XQ500 rental packages around the C13/C15 platform - a different engine family, not a running change carried into the PM3456 itself. The PM3456 matters in today's used and parts market because it predates Tier-emissions electronics: it is a mechanically straightforward, EMCP-controlled genset that stays fully serviceable without emissions aftertreatment, making it a steady source for engine, generator-end, and control-panel parts, and still a viable used standby or rental power unit for buyers who don't need current emissions certification.

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 PM3456 specifications

Engine

Engine modelCat 3456 ATAAC, inline-6, 4-stroke water-cooled diesel (power-module/generator-set arrangement, produced roughly 2001-2005)
Bore x stroke140 mm x 171 mm (5.5 in x 6.75 in)
Displacement15.8 L (966 cu in)
Compression ratio16.0:1
AspirationTurbocharged, air-to-air aftercooled (ATAAC)
Rated output (varies by set configuration)Roughly 300-500 ekW standby (375-625 kVA) at 1800 rpm/60 Hz depending on package; a common rental package (400 standby/365 prime ekW) lists engine output near 400-455 kW class
Speed1800 rpm (60 Hz); 1500 rpm where 50 Hz is specified
Emissions certificationVaries by production series - earliest units carry no tier rating, mid-run units show Tier 1, later production (circa 2002 and after) is EPA Tier II and CARB certified for non-road mobile use

Weights

Configuration noteWeight varies widely by set rating, enclosure, tank size and trailer option - treat as a range across the PM3456/3456-engine family
Shipping weight, dry, unit only (sound-attenuated rental package)6287 kg (13,860 lb)
Shipping weight, dry, unit with trailer7620 kg (16,800 lb)
Full-fuel weight, unit only7946 kg (17,518 lb)
Full-fuel weight, unit with trailer9280 kg (20,458 lb)
Other observed configurations (open skid, smaller tanks)Approximately 4080-6800 kg (9,000-15,000 lb) depending on kW rating and tank size

Dimensions

Configuration noteLength/width/height vary by enclosure and trailer option - figures below span the documented range
Sound-attenuated enclosure (no trailer)Length 5080 mm (200 in) x width 1549 mm (61 in) x height 2827 mm (111.3 in)
Sound-attenuated enclosure on trailerLength 6777 mm (266.8 in) x width 2591 mm (102 in) x height 3302 mm (130 in)
Open-skid configurations (no enclosure)Approximately length 3550-4250 mm (140-167 in) x width 1220-1520 mm (48-60 in) x height 2290-3450 mm (90-136 in), depending on rating

Performance

Machine type noteStationary/trailer-mounted power module - no travel speed, drawbar or gradeability figures apply; performance is expressed as fuel burn and sound output
Fuel consumption, 100% standby load with fan109.8 L/hr (29.0 gal/hr)
Fuel consumption, 100% prime load with fan97.3 L/hr (25.7 gal/hr)
Fuel consumption, 75% prime load with fan74.1 L/hr (19.6 gal/hr)
Running time on full tank at 75% prime loadAbout 24 hours
Sound level, rated standby load at 7 m (23 ft)75.35 dBA
Sound level, no load at 7 m (23 ft)72.65 dBA

Service capacities (summary)

Engine lubricating oil capacity38 L (39.9 qt)
Engine coolant capacity, with radiator64 L (17 gal)
Fuel tank capacityVaries by package - documented range from about 3400 L to 6800 L (roughly 900 to 1780 gal), with a common rental configuration at 1780 L (470 gal)

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

PM3456 fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with oil filter change)38 L (10.0 US gal / 39.9 qt)Cat DEO diesel engine oil. SAE 15W-40 for ambient -9.5°C to 50°C (15°F to 122°F); drop to SAE 10W-30 in colder climates down to roughly -18°C (0°F). Any oil meeting the Cat DEO performance level is acceptable as an equivalent.
Cooling system (engine and radiator)64 L (17 US gal)Cat DEAC conventional coolant or Cat ELC extended-life coolant, mixed to at least 30-50 percent ethylene glycol concentration with corrosion inhibitor. DEAC needs periodic supplemental coolant additive (SCA) top-up; ELC does not and runs a much longer drain interval.
Fuel tankvaries by configuration/series - packaged genset sub-base and skid tanks documented from roughly 1140 to 2650 L (300 to 700 US gal); one trailer-mounted 400 ekW rental package lists 1780 L (470 US gal)No. 2-D diesel fuel meeting ASTM D975 distillate diesel specification. Later emissions-certified packages call for ultra-low-sulfur diesel (ULSD).
Transmission / powertrain compartmentnot applicableStationary or trailer-mounted engine-generator set has no transmission or powertrain compartment to service.
Hydraulic system and tanknot applicableNo hydraulic system is fitted to this engine-generator set.
Final drives / axles and differentialsnot applicableOptional trailer running gear uses non-driven axles with no differential or final-drive fluid to service.
Grease pointsnot documented in available literatureNo distinct grease-point volume or NLGI grade is documented for this package in available sources; confirm any accessory bearing grease points (fan/idler pulleys) with your Cat dealer.

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

Caterpillar PM3456 maintenance schedule

Service intervalTasks
Every 50 h
  • Check engine oil and coolant levels before starting each day; top off as needed
  • Drain water and sediment from the fuel-water separator and fuel tank
  • Inspect the air cleaner service indicator and log oil pressure, coolant temperature, and generator load readings
  • Walk around the unit checking for fluid leaks, loose guarding, or unusual noise
  • Weekly: inspect drive belts, hoses, and generator lead/electrical connections for wear or looseness
  • Weekly: exercise the automatic start/stop transfer sequence and confirm alarm and shutdown circuits respond
Every 250 h
  • Change engine oil and filter and pull an oil sample for S·O·S analysis
  • Inspect drive belts and adjust or replace as needed
  • Clean or replace the engine crankcase breather
  • Check battery electrolyte level and test battery charger output
  • Pull a Level 1 coolant sample and clean the radiator and aftercooler core
  • Inspect the fuel secondary filter and replace if its service life is reached
Every 500 h
  • Replace the primary and secondary fuel filters
  • Inspect turbocharger and aftercooler boost-air piping and clamps for leaks
  • Check engine mounting and vibration-isolator condition
  • Test engine protective shutdown devices and EMCP II/II+ alarm functions
  • Lubricate fan and idler bearings
Every 1,000 h
  • Check and adjust engine valve lash
  • Clean and inspect the magnetic pickup / engine speed sensor
  • Check and lubricate the fuel ratio control and governor linkage
  • Test generator winding insulation resistance
  • Inspect the starting motor and its drive engagement
Every 2,000 h
  • Pull a Level 2 coolant sample and test supplemental coolant additive concentration
  • Perform a generator-set vibration inspection
  • Inspect and re-grease generator bearings
  • Inspect voltage-regulator sensing leads and connections for corrosion or looseness
  • Inspect and test the alternator/charging circuit
Every 3,000 h
  • Replace engine coolant, or add coolant extender if running extended-life coolant
  • Inspect the crankshaft vibration damper for cracking or fluid loss
  • Inspect the turbocharger cartridge for shaft play and housing wear
  • Replace the water temperature regulator
  • Inspect the water pump and engine mounts
Every 12,000 h
  • Replace extended-life coolant system-wide
  • Evaluate injectors, cylinder heads, and turbocharger for a top-end overhaul based on oil-analysis and compression trends
  • Inspect main and rod bearings and plan an inframe rebuild if wear limits are reached
  • Reassess the EMCP control panel and voltage-regulator components for end-of-service-life replacement

Servicing the PM3456 beyond the schedule

Predictive Maintenance & Fluid Analysis

Run S·O·S oil, coolant, and fuel sampling on schedule, not just at oil changes - the 3456 ATAAC's turbocharged, aftercooled circuit hides boost leaks and additive depletion until they surface as wear metals or a shifting acid number. Log samples by unit serial, since standby duty cycles vary widely between packages. Watch EMCP II/II+ event logs for voltage-regulator sensing-lead faults and low-load alarms; catching wet-stacking signatures early - exhaust staining, oil dilution - heads off injector coking before it costs a rebuild.

Corrective & Common Repairs

Expect injector wear and nozzle carbon buildup on units that spent years on light standby loads - wet stacking is the PM3456's signature complaint and shows up as blue-white exhaust smoke and thinning oil. Check turbocharger and aftercooler boost-air joints for leaks before chasing a power-loss complaint elsewhere. Generator-end faults trace more often to loose or corroded voltage-regulator sensing leads than to the windings themselves. Recheck EMCP II/II+ harness connectors for corrosion before swapping control boards outright.

Overhaul & Rebuild Points

Top-end work centers on the 3456's cylinder heads, valve guides, and turbocharger cartridge once valve lash drifts out of spec or blow-by climbs; budget for injector reconditioning at the same interval, since wet-stacked units wear nozzles unevenly. A full inframe addresses liners, pistons, and main/rod bearings across the 140 mm x 171 mm bore-and-stroke set. Confirm serial prefix B3G before sourcing overhaul components - mismatched engine-build parts are a recurring counter error on this platform.

Seasonal & Environment Servicing

Trailer-mounted and enclosed PM3456 packages sit outdoors year-round, so jacket-water heater function and battery charger output need a pre-cold-season check to guarantee reliable cranking and coolant readiness. Confirm coolant freeze protection matches the site's climate before winter standby duty. In hot, dusty environments, tighten aftercooler and radiator core cleaning intervals, and clear enclosure louvers and filters to prevent derating. Sound-attenuated enclosures trap heat, so verify cooling airflow isn't restricted by debris or nesting.

PM3456 common service parts

Part numberPart
129-0375Bowl As-Water CollectionCheck fitment →
133-5673ElementCheck fitment →
141-0284Kit-Fuel Filter & WaterseparatorCheck fitment →
1R-0749Filter-FuelCheck fitment →
151-7737Filter Element As-AirCheck fitment →

Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.

PM3456 fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
100-1Low engine oil pressure warningOil level low, clogged oil filter, wrong viscosity, or a failing oil pressure sensorCheck oil level and filter condition first, then verify sensor reading against a mechanical gauge before condemning the sensor
100-11Very low engine oil pressure, engine derates then shuts down on a timerSevere oil starvation from a blocked suction screen, failing oil pump, or major internal leakShut engine down immediately if still running, check oil level and look for leaks before attempting a restart
110-0 / 110-11High or very high engine coolant temperature warning/shutdownLow coolant, blocked radiator core, slipping or broken fan belt, stuck thermostat, or failed water pumpCheck coolant level and look for leaks, inspect radiator and belts, confirm with a hand-held thermometer before replacing the sensor
111-1 / 111-11Low coolant level warning/shutdownCoolant loss from a leak, or a faulty coolant level probe/harnessVisually check coolant level and hoses for leaks, then test the level sensor circuit if coolant is actually full
168-2Electrical system voltage erratic or out of range (battery/charging circuit)Weak or sulfated starting battery, faulty alternator or voltage regulator, corroded or loose battery/harness connectionsLoad-test the battery and check charging voltage at the alternator, then inspect ground and harness connections
190-8Engine speed/timing sensor signal abnormal or lostDamaged or mis-gapped primary speed/timing sensor, worn timing gear, or a broken sensor harnessCheck sensor air gap and tip condition, inspect connector and wiring before replacing the sensor
342-2 / 342-8Secondary (backup) engine speed/timing sensor faultDamaged secondary sensor, loose mounting, or wiring/connector fault on the redundant timing circuitInspect the secondary sensor and its gap, then check continuity of its wiring back to the ECM
253-2Personality module / ECM configuration faultIncorrect or corrupted engine personality module, or the module is not fully seated in the ECMReseat the personality module and verify correct calibration is loaded using Cat ET; reprogram if corrupted
442Generator fault relay tripped (EMCP genset-side protection, e.g. over/under-voltage or over/under-frequency)Generator output out of tolerance, voltage regulator (AVR) malfunction, or a faulty relay/wiring in the protection circuitCheck generator output voltage and frequency against setpoints, inspect the AVR and its wiring before replacing the relay
Emergency StopPanel-displayed emergency stop condition, genset shuts down and locks out until manually resetE-stop pushbutton pressed, or the E-stop loop wiring shorted/openedVerify the E-stop button is pulled out and reset, inspect wiring for the E-stop loop, then clear the fault at the control panel

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

PM3456 attachments & work tools

Engine/generator arrangement

The PM3456 power module pairs the Cat 3456 diesel with a 12-lead reconnectable generator end, letting the same unit be reconnected across common 3-phase voltages. Rated output for this engine/generator combination falls in the 365-500 kW class (prime vs standby ratings differ), so treat the exact number as configuration-dependent rather than fixed.

Control panel

Factory control is a digital EMCP-series panel (EMCP II or EMCP II+ generation on this vintage) handling engine/generator metering, protective shutdowns and alarms. Panel generation and feature set vary by build date and order package - verify against the nameplate/serial before assuming a specific EMCP revision.

Main breaker/switchgear

An adjustable-trip main-line circuit breaker with shunt trip is fitted, with frame size (documented from roughly 700A up to 2000A) selected to match the reconnected voltage and rated kW. Breaker size is an order-time option, not a fixed spec across all units.

Paralleling/multi-unit control

For fleets running multiple power modules together (typical in oilfield and rental duty), Cat paralleling switchgear tied to the EMCP control architecture supports running units on a common bus or paralleled to utility, with island and utility-parallel modes. This is separate ordered switchgear, not a standard single-unit feature.

Mounting/package configuration

As a power module rather than a fully packaged standby set, the base unit is normally supplied on an open skid for the customer or dealer to integrate; common field configurations for this class are open-skid, trailer-mounted, or built into a 40 ft (12 m) ISO container for oilfield and rental transport.

Enclosure/weather protection

Where an enclosure is added, this power class is offered with weather-protective or sound-attenuated steel housings; sound-attenuated versions are built to run quieter (documented near or below 66 dBA at 1 m at full load) than the plain weather-protective housing. Enclosure choice is a packaging option, not integral to the bare power module.

Fuel tank

Fuel supply is either a base/sub-frame integral tank or a separate sub-base dual-wall UL-listed tank sized for extended runtime; capacity and runtime hours are set by the dealer/packager at order time and are not fixed to one figure.

Cooling

Engine-driven radiator cooling is the standard arrangement for this class; remote-radiator or high-ambient enclosure variants exist for site layouts or hot climates where jacket-water cooling needs extra margin.

All PM3456 assemblies by section

Every catalogued assembly group for the Caterpillar PM3456. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
151-7736 Air Cleaner Gp
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
15***36Air Cleaner Group1
5H***04Packing,Preformed Elbow Part Of Kit P/N 5r***262
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197-3689 Air Cleaner Gp
19***89Air Cleaner Group1
22***40Tube1
22***41Tube1
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135-9962 Connection Gp-Exhaust
10***01Manifold-Exhaust; (Center - Low Mount)1
10***08Manifold-Exhaust; (End)(End)2
10***92Stud-Taperlock; (3/8-16x3.93in)11
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205-1231 Elbow Gp-Air Inlet
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***822
12***58Shield As; (Manifold)1
1B***55Nut,Plain,Hexagon Turbocharger Mounting2
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6l-2927 Elbow Gp-Exhaust
16***27Housing1
16***28Cover As-Compressor1
16***29Cartridge Group-Turbocharger1
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220-6036 Lines Gp-Air
19***53Turbocharger Group1
1S***95Gasket-Turbocharger To Manifold; Gasket Turbocharger To Manifold1
22***36Lines Group-Air1
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114-1904 Lines Gp-Air
11***04Lines Group-Air1
16***26Turbocharger Group1
1S***95Gasket-Turbocharger To Manifold; Gasket Turbocharger To Manifold1
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164-4637 Manifold Gp-Exhaust
16***37Manifold Group-Exhaust1
16***27Housing1
19***58Cartridge Group-Turbocharger1
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124-0657 Shield Gp-Manifold
10***40Sensor Group-Temperature; -Output Transfer Gear Oil1
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
12***57Shield Group-Manifold1
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167-1326 Turbocharger Gp
16***26Turbocharger Group1
3S***93Strap-Cable-To Tie Harnesses Together1
4P***34Clip-Ladder; (00800 mm )1
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168-3374 Turbocharger Gp
03***37Connector-Port1
03***47Elbow-Filtered Fuel From Based Assembly2
03***62Elbow, Swivel Nut 45 Degrees (-6)1
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196-5953 Turbocharger Gp
10***20Spacer; (10.5x25x20-mm Thk)1
19***93Bracket1
19***94Bracket1
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Basic Engine
133-9907 Adapter Gp-Pump Drive
13***06Adapter1
13***07Adapter Group-Pump Drive; -Remote1
1B***67Ball Bearing2
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122-1248 Base Gp-Valve Cover & Inj Harn
10***18Clip3
10***19Clip3
10***34Kit-Receptacle; (12-Pin)(Valve Cover & Inj Harness)1
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130-9710 Camshaft Gp
10***89Cover1
11***36Screw-Flat Head; (5/16-18x0.875-In)3
13***10Camshaft Group1
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109-3319 Coupling Gp-Generator
03***57Washer; (13x26x6-mm Thk)8
10***19Coupling Group-Generator1
11***10Plate-Flexible1
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102-2271 Cover Gp-Camshaft
00***30Stud; (5/16-18x225-In)2
10***99Cover As-Panel1
10***71Cover Group-Camshaft; (Cam Access) (Sound Suppression)1
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197-4555 Cover Gp-Cylinder Block
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
12***35Seal-Integral1
14***77Cover1
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8n-3148 Cover Gp-Cylinder Block
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
4N***99Gasket; (Oil Drain)2
4W***90Cover2
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121-0168 Cover Gp-Cylinder Block
10***32Gasket1
12***68Cover Group-Cylinder Block1
1F***58Nut-Full; (1/2-13-Thd)(Air Lines)3
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175-2579 Cover Gp-Cylinder Block
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***824
10***24Cover-Cylinder Block1
10***25Seal-Cover1
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4n-4792 Cover Gp-Flywheel Housing
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly1
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***461
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159-9343 Cover Gp-Valve Mechanism
13***20Crankshaft As1
15***43Cover Group-Valve Mechanism1
1W***02Gear-Crankshaft; (80-Teeth)1
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170-6525 Cover Gp-Valve Mechanism
10***99Plug2
11***27Seal-O-Ring; (19.18mm Id)1
14***29Seal; (Drainback)1
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150-3139 Cover Gp-Valve Mechanism
11***53Cap As-Filler; (Engine Oil)1
14***78Grommet1
15***38Cover As-Valve Mechanism1
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150-3135 Cover Gp-Valve Mechanism
14***76Cover-Valve Mechanism1
14***78Grommet1
15***35Cover Group-Valve Mechanism1
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341-6804 Cover Gp-Valve Mechanism
12***47Guide-Valve; (0.51-mm Os)(Standard)0
12***75Guide-Valve; (Standard)24
12***12Guide-Valve; (0.13-mm Os)(Standard)0
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150-3141 Cover Gp-Valve Mechanism
14***78Grommet1
15***41Cover Group-Valve Mechanism1
17***39Cover As-Valve; (Breather)1
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150-3142 Cover Gp-Valve Mechanism
15***41Cover Group-Valve Mechanism1
15***42Cover Group-Valve Mechanism2
15***43Cover Group-Valve Mechanism1
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137-7298 Crankshaft Gp
13***98Crankshaft Group1
15***82Insert-Valve Seat; (Exhaust)(Standard)12
16***42Insert-Valve Seat; (0.76-mm Os Od, Exhaust)(Standard)0
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202-1255 Cylinder Block As
12***47Guide-Valve; (0.51-mm Os)(Standard)0
12***75Guide-Valve; (Standard)24
12***12Guide-Valve; (0.13-mm Os)(Standard)0
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170-7616 Cylinder Block Gp
15***23Valve; (Inlet)12
15***24Valve; (Exhaust)12
16***78Seal-Valve Stem; (Exhaust)24
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223-7263 Cylinder Head As
15***23Valve; (Inlet)12
15***24Valve; (Exhaust)12
16***78Seal-Valve Stem; (Exhaust)24
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243-0943 Cylinder Head As
15***23Valve; (Inlet)12
15***24Valve; (Exhaust)12
16***78Seal-Valve Stem; (Exhaust)24
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243-6741 Cylinder Head As
10***25Stud; (3/8-16x1.25-In)1
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
10***73Fastener Group-Cylinder Head; (Marked X)10
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234-5985 Cylinder Head Gp
23***85Cylinder Head Group1
4F***11Bolt 165.10 mm(6.50 In.) Long2
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223-9250 Cylinder Head Gp
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case6
12***79Adapter1
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case2
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168-4494 Damper & Pulley Gp
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
16***94Damper & Pulley Group1
5M***94Washer; Bracket To Tee, Bracket To Block, Tube As. To Tee, Tube As. To Oil Cooler2
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120-4230 Drive Gp-Fan
12***30Drive Group-Fan1
2P***05Bolt Tube Assembly To Turbocharger8
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6i-3638 Drive Gp-Pump
5J***94Screw,Cap,Socket He Manifold Mtg12
6I***38Drive Group-Pump; -Fuel Transfer Pump1
8L***13Strap-Cable(Tie 5.50" Long)6
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172-7120 Fastener Gp-Engine
0S***01Bolt 2.75 In. (69.85 mm) Long12
17***20Fastener Group-Engine1
21***77Washer-Hard; (17x27x5-mm Thk)12
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4p-6846 Fastener Gp-Front Housing
10***26Dowel1
4P***46Fastener Group-Front Housing; -Remote1
9X***72Bolt-Locking; (3/8-16x0.875-In)16
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109-3290 Fastener Gp-Oil Pan
03***85Bolt-12 Point Hd-Engine Flywheel To6
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting1
10***68Bearing-Sleeve1
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109-1657 Fastener Gp-Valve Mechanism
10***57Fastener Group-Valve Mechanism1
17***17Bracket1
17***18Bracket2
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216-7883 Flywheel Gp
10***56Housing-Flywheel1
16***29Bolt; (3/8-16x1.5-In)(Marked Z)8
16***31Bolt; (3/8-16x1.75-In)(Marked Y)5
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204-2114 Gear Gp-Camshaft
06***55Seal-O-Ring (Id=47.22mm)1
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case1
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting3
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137-5921 Gear Gp-Front
06***55Seal-O-Ring (Id=47.22mm)1
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case1
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting3
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218-2840 Guard Gp-Pulley
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly8
10***85Eye-Lifting1
21***40Guard Group-Pulley1
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106-7410 Housing Gp-Flywheel
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard4
10***10Housing Group-Flywheel1
12***63Eye-Lifting1
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180-3736 Housing Gp-Front
18***36Housing Group-Front1
19***98Rocker Arm Group3
6I***58Bridge-Valve12
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111-2088 Lifting Gp-Engine
11***88Lifting Group-Engine; (Rear)1
32***36Rocker Arm Group; -Non-Brake3
6I***58Bridge-Valve12
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127-0564 Lifting Gp-Engine
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine1
12***55Bracket1
12***64Lifting Group-Engine; -Remote1
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148-7482 Mechanism Gp-Fuel Pump & Valve
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold5
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***824
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190-0009 Mechanism Gp-Fuel Pump & Valve
13***05Ring-Piston; (Oil Control)1
14***30Ring-Piston; (Intermediate)1
15***25Bolt; (7/16-14-2a-Thd)1
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135-4941 Mounting Gp-Alternator
13***41Mounting Group-Alternator1
8L***86Seal-O-Ring (Id=16.36mm); (16.36-mm Id)1
8T***67Plug-Pipe; (Oil Cooler Bonnet Drain)1
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142-8347 Pan Gp-Oil -Engine
14***47Pan Group-Oil; -Rear Sump1
6V***09Seal-O-Ring (Id=16.36mm); (16.36-mm Id)1
9S***05Plug-O-Ring; (Straight Thread O-Ring)1
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134-3071 Piston & Rod Gp
03***13Seal-O-Ring2
06***39Seal-O-Ring2
13***71Piston & Rod Group1
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353-9978 Plate As-Front Housing
06***39Seal-O-Ring2
19***51Button; (24-mm Od)2
19***69Screw-Arm Adjustment; (9/16-18x2-In)2
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234-5986 Plug Gp-Cylinder Head
23***86Plug Group-Cylinder Head1
25***21Button1
27***91Screw-Arm Adjustment; (3/8-24x1.20-In)1
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234-5996 Plug Gp-Cylinder Head
23***96Plug Group-Cylinder Head1
30***22Shaft As-Rocker Arm, Exhaust Manifold1
32***96Rocker Arm Group; -Intake4
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234-9776 Plug Gp-Engine
06***39Seal-O-Ring1
19***51Button; (24-mm Od)1
19***69Screw-Arm Adjustment; (9/16-18x2-In)1
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278-1929 Rocker Arm Gp
23***67Support; (Engine)1
27***29Rocker Arm Group1
5P***38Bolt-12 Point Head; (1/2-13x4.75-In)8
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320-2796 Rocker Arm Gp
17***63Base Group-Oil Filter; -Engine1
1P***67Plunger; (Engine Oil Cooler Relief Valve)2
32***96Rocker Arm Group; -Intake1
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198-9898 Rocker Arm Gp
14***67Seal Group-Crankshaft; (Front)1
19***98Rocker Arm Group1
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328-4238 Rocker Arm Gp
2P***04Stud-Hollow; (1.5-16x1.339-In)1
32***38Rocker Arm Group; -Exhaust1
9L***57Plug-Cup2
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328-4236 Rocker Arm Gp -Non-Brake
06***40Seal-O-Ring (Id=37.69mm)2
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
15***80Elbow1
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319-7401 Seal Gp-Crankshaft -Front
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender2
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)1
31***01Seal Group-Crankshaft; -Front1
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9y-1856 Support Gp-Engine -Front
0S***08Bolt-Support To Starting Engine Timing Gear Housing2
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***462
12***72Stud-Mounting; (3/8-16x1.564-In)(3/8-16 Thd)2
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Cooling System
229-3474 Fan Gp
22***74Fan Group; -Blower1
7X***32Plug; (Pipe) (3/8-18 Nptf Thd)1
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200-2852 Fastener Gp-Water Lines
10***77Seal-O-Ring; (100.97mm Id)1
12***72Seal-O-Ring (215.49mm Id)1
13***25Pump Group-Water1
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109-2373 Fastener Gp-Water Pump
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
10***30Bearing As-Roller1
10***73Fastener Group-Water Pump; (Water Pump Cover)1
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159-1597 Lines Gp-Water
15***97Lines Group-Water1
18***07Clamp-Hose2
19***16Cap-Radiator; (Pressure)1
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159-1599 Plug Gp-Water Lines
15***37Filter Element As-Air; (Primary)1
15***99Plug Group-Water Lines1
17***93Cover As1
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109-2322 Plug Gp-Water Lines
10***22Plug Group-Water Lines; -Remote1
14***67Clamp; (Hose)2
1P***78Clamp; (Hose)1
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100-9347 Pump Gp-Water
10***47Pump Group-Water1
15***36Air Cleaner Group1
18***02Filter Element As-Air; (Secondary)1
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135-4925 Pump Gp-Water
13***25Pump Group-Water1
2N***65Bolt-High Temperature; (3/8-16x1.75-In)3
2N***66Locknut; (3/8-16-Thd)(High Temperature)3
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220-6034 Radiator Gp
22***34Radiator Group1
5L***31Clamp Elbow To Adapter1
5L***35Elbow-Exhaust1
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216-9349 Radiator Gp
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
10***25Gasket; (Air Inlet Manifold)(Intake Manifold Inlet)1
10***03Elbow; (Air Inlet)1
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Electrical And Starting System
5n-5692 Alternator Gp-Charging
12***74Screw-Pan Head; (8-32x9.52-mm)1
12***70Stud3
12***91Spacer; (8.2x13x15-mm Thk)4
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6i-0376 Battery Charger Gp
15***60Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness)0
15***70Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)0
1S***44Boot-Conduit 19mm (.75in) Id4
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9x-9730 Battery Gp -Dry
12***60Thermostat As; (20-Deg C To 80-Deg C)(Jacket Water Heater)1
9X***30Battery Group; (12 Volt)(Dry)(Each Includes)1
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226-9696 Circuit Breaker Gp
10***32Thermostat; (60 Deg F To 160 Deg F)(Jacket Water Heater)1
22***96Circuit Breaker Group1
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229-6618 Circuit Breaker Gp
22***18Circuit Breaker Group1
7E***47Heater Group-Jacket Water1
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129-9192 Control & Mtg Gp-Engine Elek
00***46Elbow; (45 Degree Pipe)1
00***62Elbow-External Pipe Thread1
11***36Valve As-Shutoff; (Jacket Water Heater)2
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188-9756 Fastener Gp-Battery Charger
18***56Fastener Group-Battery Charger1
21***40Spring; (Relay)(Us Sourced)1
22***70Relay; (10-Ampere, 24-Volt)(Us Sourced)1
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226-3620 Harness As-Engine
16***26Sensor Group-Pressure; -Atmospheric Air, Turbo Inlet1
16***93Adapter1
1T***20Bolt-12 Point Head; (3/8-16x1.25-In)2
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7e-6247 Heater Gp-Jacket Water
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
18***35Pin-Connector; (16-Ga To 18-Ga)3
7E***47Heater Group-Jacket Water1
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225-6082 Heater Gp-Jacket Water
15***60Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness)1
18***40Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga)3
22***82Heater Group-Jacket Water1
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193-8243 Mounting Gp-Jacket Wtr Heater
15***60Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness)1
19***43Mounting Group-Jacket Wtr Heater1
19***26Harness As-Sensor; (16-18 Ga Wire)(Engine Oil Temperature)3
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128-3326 Relay Gp -Auxiliary
12***26Relay Group; -Auxiliary1
15***60Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness)1
18***40Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga)3
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175-1350 Sensor & Mtg Gp-Electric
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
17***49Strap; (Marker)1
17***50Sensor & Mtg Group-Electric; -Atmospheric Pressure1
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165-6634 Sensor Gp-Coolant Level
16***34Sensor Group-Coolant Level; (Water, Coolant)(Scac Expansion Tank)1
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239-9957 Sensor Gp-Liquid Level
23***57Sensor Group-Liquid Level; -Coolant Loss1
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161-9926 Sensor Gp-Pressure
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
12***67Pin-Connector; (14-Ga To 16-Ga)(14-Ga Wire)2
15***70Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)1
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194-6724 Sensor Gp-Pressure
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
12***67Pin-Connector; (14-Ga To 16-Ga)(14-Ga Wire)2
13***61Bracket1
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194-6725 Sensor Gp-Pressure
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
18***35Pin-Connector; (16-Ga To 18-Ga)3
19***25Sensor Group-Pressure; -Engine Oil1
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142-8394 Sensor Gp-Speed
03***23Bolt; (1/4-28x1-In)5
14***94Sensor Group-Speed; -Secondary, Timing1
25***79Kit-Solenoid; (24-Volt)(Starting Motor)1
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201-6615 Sensor Gp-Speed
20***15Sensor Group-Speed; -Low Output1
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4p-7610 Sensor Gp-Speed
20***64Starting Motor Group-Electric1
4N***59Gasket; (Starting Motor)1
4P***10Sensor Group-Speed; -Engine Speed1
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142-8393 Sensor Gp-Speed
0S***97Capscrew (1/4 - 28 Nf X 1 Gd8, Hex)5
14***93Sensor Group-Speed; -Primary, Timing1
25***79Kit-Solenoid; (24-Volt)(Starting Motor)1
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201-6617 Sensor Gp-Speed
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case2
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case3
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
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102-2240 Sensor Gp-Temperature
10***40Sensor Group-Temperature; -Output Transfer Gear Oil1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
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207-1564 Starting Motor Gp-Electric
03***55Locknut; (5/16-18-Thd)(Marked X)6
15***25Rod Group-Access Door1
15***78Hinge3
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207-1556 Starting Motor Gp-Electric
14***77Fastener-Pin104
14***78Fastener-Collar104
15***86Insert-Nut14
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120-9099 Starting Motor Gp-Electric
269-5223 Transformer-Current
03***55Locknut; (5/16-18-Thd)(Marked X)10
0S***17Bolt --Use Open Hole In Compressor Body6
0S***18Bolt; (5/16-18x1-In)(Hydraulic Pump)4
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146-2626 Wiring Gp-Engine Electronic
14***26Wiring Group-Engine Electronic1
26***02Bracket-Latch3
26***03Latch2
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191-2184 Wiring Gp-Instr & Ignition
15***36Rod1
16***95Bracket1
16***96Socket1
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257-4183 Wiring Gp-Unit Injector
18***60Generator Group1
25***83Wiring Group-Unit Injector1
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Enclosures, Guards And Bases
226-7380 Container Gp
18***61Generator Ar1
22***80Container Group1
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161-2490 Door As
11***74Rotor As; (Permanent Magnet)1
16***90Door As1
18***16Stator As1
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156-9152 Door As
11***74Rotor As; (Permanent Magnet)1
11***56Washer; (5.6x7.8x0.5-mm Thk)2
15***20Regulator As-Voltage1
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203-0218 Latch Gp-Access Door -Enclosure
11***74Rotor As; (Permanent Magnet)1
11***56Washer; (5.6x7.8x0.5-mm Thk)2
15***20Regulator As-Voltage1
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151-5625 Rod Gp-Access Door
11***74Rotor As; (Permanent Magnet)1
15***25Rod Group-Access Door1
18***16Stator As1
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Engine Arrangement
235-4670 Engine Ar-Complete
10***47Pump Group-Water1
10***71Cover Group-Camshaft; (Cam Access) (Sound Suppression)1
10***10Housing Group-Flywheel1
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235-3431 Engine Ar-Core
12***48Base Group-Valve Cover & Inj Harn1
13***01Pump Group-Fuel Injection6
13***10Camshaft Group1
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9e-5826 General Ar
23***70Engine Ar-Complete1
9E***26General Ar1
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Fuel System
165-5630 Base Gp-Fuel Filter
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
11***28Elbow; (90-Deg)3
16***30Base Group-Fuel Filter1
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141-8954 Fastener Gp-Fuel Lines
10***72Spacer; (9.8x15.85x37.6-mm Thk)1
14***54Fastener Group-Fuel Lines1
21***27Injector Group-Fuel1
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133-5671 Filter Gp-Water Sep & Fuel
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
13***71Filter Group-Water Sep & Fuel; -Primary1
13***41Pump Group-Fuel Priming; (Hand)1
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217-8708 Lines Gp-Fuel
0S***99Stud (1.4325" Long)2
10***69Seal-O-Ring; (Fuel Transfer Pump)2
13***16Cover1
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209-6755 Lines Gp-Fuel
0S***99Stud (1.4325" Long)2
10***69Seal-O-Ring; (Fuel Transfer Pump)2
13***16Cover1
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213-3595 Lines Gp-Fuel Filter
0S***99Stud (1.4325" Long)2
10***69Seal-O-Ring; (Fuel Transfer Pump)2
13***16Cover1
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130-9701 Pump Gp-Fuel Injection
13***01Pump Group-Fuel Injection1
23***96Valve Group-Check; -Fuel Filter1
6V***89Seal-O-Ring (Id=19.18mm)1
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159-7324 Pump Gp-Fuel Prm & Sec Filter
15***24Pump Group-Fuel Prm & Sec Filter1
28***25Valve Group-Check; -Fuel1
6V***89Seal-O-Ring (Id=19.18mm)1
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131-8270 Pump Gp-Fuel Transfer
03***33Seal-O-Ring; (12.42mm Id)1
13***70Pump Group-Fuel Transfer1
6V***23Ring; (Backup) (13.16mm Id)1
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233-6742 Valve Gp-Check -Fuel
03***12Screw-Forming; (10-24x0.5-In)5
11***19Diode As-Alternator1
18***34Nut-Flange; (5/8-18-Thd)1
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281-2725 Valve Gp-Check -Fuel
19***33Circuit Breaker As; (1600-Ampere)1
19***34Shunt-Trip; (24-Volt)1
22***97Shunt-Trip1
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238-0296 Valve Gp-Check -Fuel
23***96Valve Group-Check; -Fuel Filter1
7N***60Vent As; (Battery)6
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139-6873 Valve Gp-Fuel Bypass -Filter
10***80Shunt1
13***73Valve Group-Fuel Bypass; -Filter1
16***00Switch1
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Generators
188-9851 Generator Ar
18***51Generator Ar1
4B***42Screw-Machine; (12-24x0.375-In)2
4B***74Washer; (6.4x14.5x1.6-mm Thk)4
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188-9861 Generator Ar
15***54Bolt; (M10x1.5x40-mm)8
18***61Generator Ar1
19***26Disc1
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188-9850 Generator Ar
188-9860 Generator Gp
18***60Generator Group1
3J***54Packing,Preformed Part Of Kit P/N 5r***271
9S***02Plug-O-Ring; (Straight Thread O-Ring)1
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290-5567 Heat Sink As
10***22Housing As; (Transformer Box-Emcp Ii)1
10***03Channel As; (Transformer-Emcp Ii)1
10***16Seal-Interface1
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155-3820 Regulator As-Voltage
10***27Screw-Pan Head; (10-24x0.25-In)8
15***65Kit-Connecting Plug; (8-Pin)(Electronic Control Channel)1
15***20Regulator As-Voltage1
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202-8634 Regulator As-Voltage -Digital
13***15Film-Control Panel; (Generator Set Control +)(Emcpii+)1
13***50Control Group-Electronic; (Relay Module)(Generator Set Control +)1
15***98Film-Control Panel; (Generator Set Control +)(Eui)1
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193-1067 Rotor As
10***00Control Group-Electronic; (Relay Module)1
13***16Film-Information; (Control Panel)(Emcp Ii - Graphic/Text)1
19***67Rotor As1
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Lubrication System
155-5005 Base Gp-Oil Filter -Engine
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold2
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly1
11***68Seal-O-Ring; (15.54mm Id)1
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176-1363 Base Gp-Oil Filter -Engine
05***13Connector1
11***36Valve As-Shutoff; (Jacket Water Heater)1
17***63Base Group-Oil Filter; -Engine1
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154-4327 Base Gp-Oil Filter -Engine
10***20Spacer; (10.5x25x20-mm Thk)1
15***27Base Group-Oil Filter; -Engine1
16***17Tube1
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4n-2481 Fastener Gp-Oil Pump Mounting -Engine
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting3
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***461
11***87Seal-O-Ring (23.16 mm Id)1
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154-4325 Filter Gp-Engine Oil
12***56Cover As-Pump1
15***25Filter Group-Engine Oil1
1M***44Bolt; (3/8-16x2-1/4 In)2
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183-3015 Fumes Disposal Gp
18***15Fumes Disposal Group1
21***22Spider As-Fan; (9 Blades)1
22***68Spacer1
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4n-9951 Gauge Gp-Oil Level (Dipstick) -Engine
0L***52Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex)1
4N***51Gauge Group-Oil Level (Dipstick); Oil Level Gauge Group1
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145-7273 Lines Gp-Engine Oil Drain
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
14***73Lines Group-Engine Oil Drain1
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4n-5394 Lines Gp-Turbocharger Oil
0L***52Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex)6
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***823
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
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161-4113 Pump Gp-Engine Oil
16***13Pump Group-Engine Oil1
7X***31Plug-Pipe; (Flywheel Housing Drain)4
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Operator Station
130-3349 Control Gp-Alarm Module
06***88Locknut; (1-11-1/2-Thd)2
09***66Washer; (Hard) (4.5x9x1mm Thk)9
0S***15Bolt 19 mm (.75 In.) Long Return Air Console To Enclosed Rops6
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118-2070 Control Gp-Emcp Electronic
11***70Control Group-Emcp Electronic; -Generator Set Control +1
13***50Control Group-Electronic; (Relay Module)(Generator Set Control +)1
1S***74Seal-O-Ring (164.69mm Id)2
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133-6350 Control Gp-Emcp Electronic
11***48Lamp; (24-Volt, 3-Watt)(Clear)(Fuel Level Gauge)1
13***50Control Group-Emcp Electronic; -Generator Set Control1
16***08Lamp-Led; (24-Volt, White)(Fuel Level Gauge)1
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118-0175 Control Gp-Emcp Electronic
11***75Control Group-Emcp Electronic1
1S***74Seal-O-Ring (164.69mm Id)1
3J***54Packing,Preformed Part Of Kit P/N 5r***271
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133-6351 Control Gp-Emcp Electronic
11***75Control Group-Emcp Electronic1
11***70Control Group-Emcp Electronic; -Generator Set Control +1
13***51Control Group-Emcp Electronic; -Generator Set Control1
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137-5525 Control Gp-Emcp Electronic
11***75Control Group-Emcp Electronic1
13***25Control Group-Emcp Electronic2
33***38Film-Control Panel; (Generator Set Control +)1
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243-5065 Control Gp-Emcp Electronic
11***75Control Group-Emcp Electronic1
23***58Control Group-Emcp Electronic1
24***65Control Group-Emcp Electronic1
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236-4558 Control Gp-Emcp Electronic
11***75Control Group-Emcp Electronic1
23***58Control Group-Emcp Electronic1
24***65Control Group-Emcp Electronic1
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101-0225 Control Gp-Emcp Electronic
10***25Control Group-Emcp Electronic1
1S***74Seal-O-Ring (164.69mm Id)1
3J***54Packing,Preformed Part Of Kit P/N 5r***271
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155-5234 Gauge Gp-Fuel Level
10***06Receptacle Kit; (Includes Wedge And Receptacle Assem.)1
10***64Cover; (Synchronizing Lights Module)1
15***34Gauge Group-Fuel Level; (Fuel Level)2
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333-2393 Kit-Electronic Conversion -Generator Set Control +
06***88Locknut; (1-11-1/2-Thd)2
09***66Washer; (Hard) (4.5x9x1mm Thk)9
0S***15Bolt 19 mm (.75 In.) Long Return Air Console To Enclosed Rops6
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332-8866 Kit-Electronic Conversion -Generator Set Control +
10***64Cover; (Synchronizing Lights Module)1
15***34Gauge Group-Fuel Level; (Fuel Level)1
22***51Plate As1
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333-2392 Kit-Electronic Conversion -Generator Set Control +
33***92Kit-Electronic Conversion; -Generator Set Control +1
3E***65Nut-Hard-Self Lock; (1/4unc)2
3K***60Nut, Hex (3/8 - 16 Nc, Plastic Insert)4
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333-2394 Kit-Electronic Conversion
06***88Locknut; (1-11-1/2-Thd)2
09***66Washer; (Hard) (4.5x9x1mm Thk)9
0S***15Bolt 19 mm (.75 In.) Long Return Air Console To Enclosed Rops6
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227-7487 Module Gp-Synchronizing Lights
11***52Plate & Film Group; -Engine Information1
22***87Module Group-Synchronizing Lights1
22***81Film-Warning; -Universal2
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227-7486 Module Gp-Synchronizing Lights
22***86Module Group-Synchronizing Lights1
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111-4219 Mounting Gp-Control Panel
11***19Mounting Group-Control Panel1
20***19Film-Identification; (Caterpillar)1
23***31Film-Information; (Cat)1
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227-4427 Panel Ar-Control
227-4428 Panel Ar-Control
227-4426 Panel Gp-Electronic
129-0308 Potentiometer
Prime Package
151-5714 Ladder Gp
13***16Film-Information; (Control Panel)(Emcp Ii - Graphic/Text)1
13***50Control Group-Emcp Electronic; -Generator Set Control1
15***14Ladder Group1
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Service Equipment And Supplies
6l-4502 Chart-Plate & Film
231-0535 Film Gp

PM3456 serial number reference

On a Cat PM3456 power module, the PIN/serial plate is mounted on the module frame or skid near the control panel or on the engine support rail, in the same general area as other Cat engine-generator packages. The plate shows a 3-character prefix followed by the sequence number (e.g. B3G00001); the prefix ties the unit to a specific build configuration/parts and service manual set, while the sequence number identifies the individual unit within that run.

PrefixIdentifies
B3GCat PM3456 power module (engine-generator set), built around the Cat 3456 diesel engine

Frequently asked questions

What engine powers the Caterpillar PM3456?

The PM3456 power module is built around the Cat 3456 ATAAC diesel: a turbocharged, air-to-air aftercooled inline-six displacing 15.8 L (964 in³), with a 140 mm x 171 mm (5.5 in x 6.7 in) bore and stroke and about 16.0:1 compression. It's controlled by an EMCP II or EMCP II+ panel depending on build date.

What does a PM3456 unit weigh?

Operating weight varies by configuration: open skid-mounted units run lighter, while trailer-mounted, sound-attenuated packages fall roughly in the 7,500-9,700 kg (16,500-21,300 lb) range depending on fuel load and enclosure. Check the nameplate for your specific package - it varies by configuration/series.

What replaced the PM3456?

There's no direct one-for-one successor. Within Cat's own lineup, the 3456-engine power-module family sits alongside larger siblings like the PM3508, PM3512, and PM3516, which use different engines rather than replacing the PM3456. In practice, it was superseded in Cat's rental and industrial genset lineup by later Tier-emissions-compliant power modules built on the C13/C15/C18 platforms as emissions rules tightened after the mid-2000s.

What PM3456 owners discuss

How reliable is the 3456 ATAAC engine in these power modules, and what hours can an owner expect before major work?
Operators generally treat the 3456 as a durable industrial block, with plenty of units still working well past 10,000-20,000 hours on the original long block when duty cycle and maintenance were kept up. Units that saw mostly standby or lightly-loaded rental service often show low hours relative to age, so hour count alone is a poor health indicator on this platform. Heavy prime-power duty with proper loading tends to age the engine more predictably than intermittent or light-load use.
The set runs fine on load but idles or runs light rough with black smoke buildup around the exhaust and turbo. What's going on?
This pattern is the classic wet-stacking complaint on rental-grade power modules that spend a lot of time at low load or on standby exercise cycles. Running well under roughly 30 percent of rated capacity for extended periods keeps cylinder temps too low to burn fuel completely, and unburned fuel collects in the exhaust path, fouling injectors and coking the turbo and exhaust valves over time. The fix in the field is periodic load-bank runs at higher output to clean things up, not a parts swap. Have your dealer verify injector and turbo condition if smoke and rough running persist after a proper load run.
We have an intermittent miss at rated speed, with or without load, on an older unit. Where do owners start?
Field reports on these engines point first to a weak or failing injector rather than governor or timing issues, since the ATAAC fuel system tends to show single-cylinder misfire as the first symptom of injector wear. The standard diagnostic path is a cylinder cutout test with the engine service tool to isolate which cylinder drops power, then pull and bench-test that injector. Don't assume it's electrical until cutout testing rules the injector in or out.
What generator-end and voltage regulator problems come up most on these sets?
These power modules commonly pair the engine with an SR4B or similar brushless generator end and a separate automatic voltage regulator, and most owner complaints trace to the regulator or its sensing circuit rather than the alternator windings themselves. Symptoms include voltage drifting or dropping under load, and the usual causes are loose or corroded droop CT and sensing lead connections rather than a bad regulator out of the box. When a regulator is finally replaced, match the sensing voltage and control voltage to the original setup rather than assuming a straight swap, since mismatched control voltage on the replacement regulator will cause the same drift complaint all over again. Have your dealer verify regulator and CT wiring before condemning the generator end.
What EMCP II / II+ control panel quirks should an owner know about?
Owners and technicians who've worked with this control panel generation generally describe it as basic and occasionally finicky compared to later EMCP versions, with reported issues including unresponsive panel buttons and nuisance shutdowns tied to voltage-sensing or control-board faults rather than a genuine engine problem. Fault codes on this panel use a failure-mode-identifier scheme, so a shutdown code points to a type of sensor or circuit fault, not a specific part, and needs cross-referencing against the panel's fault list before chasing repairs. Sites that run these units for critical standby duty often add an external protective relay ahead of the panel's own protection, since the built-in package has known gaps for utility paralleling and sensitive load protection.
Any known cooling or turbo/aftercooler concerns specific to this engine?
The 3456's air-to-air aftercooler is generally solid, but a leaking core or degraded boost seal will show up first as reduced throttle response and turbo working harder to compensate for lost boost, rather than obvious visible damage. On the oil side, rising oil consumption on higher-hour units is most often traced to turbocharger shaft seal wear, so a compressor and turbine inspection for oil residue is the first check before assuming ring or valve-guide wear. Coolant-in-oil complaints on this same engine family point toward oil cooler or head gasket sealing rather than the aftercooler itself.
What should I check before buying a used PM3456 power module?
Confirm actual load history, not just hours: a low-hour unit that mostly idled on standby or light rental duty can carry more wet-stacking residue in the exhaust and turbo than a higher-hour unit that ran properly loaded. Pull the EMCP fault history/event log rather than trusting a clean-looking panel, since intermittent voltage-sensing and regulator faults on this control generation don't always throw a lasting fault light. Inspect the turbo and aftercooler piping for oil residue or boost leaks, check the generator end's sensing and droop wiring for corrosion, and ask for a load-bank test result if available, since resistive load testing at or near rated output is the best single indicator of both engine and generator-end health on a used rental-grade set. Have your dealer verify the injector and control-panel condition against the fault log before finalizing a purchase.

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

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