Caterpillarengine - industrialpumper
Caterpillar SPT342
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar SPT342 is a truck-mounted Pumper package cataloged under Cat's "Engine - Industrial" line rather than as a mobile earthmoving machine. It pairs a mechanical, turbocharged-aftercooled Cat 3412C V-12 diesel (about 27 liters displacement, mechanical unit injection, no electronic engine control) with a pump-drive arrangement mounted on a truck chassis for oilfield and industrial fluid-transfer duty such as cementing, fracturing, and high-pressure water or process-fluid pumping. Published power output for the pump-drive 3412C family runs roughly 400-600 kW (about 640-1,050 hp) at 1,700-2,100 rpm depending on the specific rating selected by the pump integrator, and no single operating weight applies since the finished package weight depends on the chassis, pump end, and tankage the builder specifies. The SPT342 carries its own serial number prefix, separate from its closest siblings: the skid-mounted SPS342, plus the SPF343 and SPS343 packages in the same Pumper family.
Across the Pumper family, the core distinction between siblings is mounting and pump configuration rather than a generational redesign: SPT342 is the truck-mounted version of essentially the same 3412C engine core used in the skid-mounted SPS342, while SPF343 and SPS343 step up in the same family with their own engine and drive arrangements. Caterpillar's mechanical 3412C was eventually superseded in the wider 3412 engine line by the electronically controlled, HEUI-injected 3412E as emissions and control requirements tightened, though no single named replacement for the SPT342 truck-mounted package specifically is documented. In the used and parts market, the SPT342 remains relevant because its 3412C core shares major components -- pistons, liners, injection pump parts, turbocharger hardware -- with the broader 3412/3412C engine family used across generator sets, marine propulsion, and other pump-drive packages, so parts availability and rebuild support stay strong well after the package left new production.
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 SPT342 specifications
Engine
| Classification | Cat Engine - Industrial line, Pumper arrangement. The SPT342 is the truck-mounted pumper configuration (serial prefix 3CZ, 3CZ00419-UP); its skid-mounted sibling SPS342 covers the same engine family under a separate prefix |
| Engine family | Cat 3412C, a turbocharged-and-aftercooled V-12 mechanical diesel of 27 L displacement (137 mm bore x 152 mm stroke), with mechanical unit injection and hydra-mechanical governor — no electronic control module |
| Rated power | Fire-pump-duty literature for this 3412C family spans 476-551 kW (638-739 hp) across a 1750-2100 rpm rated-speed band; one commonly published rating point is 551 bkW (739 bhp) at 1900 rpm, standby duty. Exact rating on the SPT342 unit's own dataplate depends on the arrangement and feature code ordered — verify against the nameplate |
| Displacement / cylinders | V-12, four-stroke diesel, 27 L (about 1,648-1,650 in3), compression ratio 14.5:1 |
| Emissions tier | Not applicable in the modern sense — mechanical diesel, no electronic control. Published literature for this engine family shows both an FM/UL/NFPA-20-listed rating and a separate non-certified rating for global non-regulated areas, depending on which package is ordered |
Weights
| Operating weight | No published figure covers the assembled truck-mounted pumper package; it depends on the chassis and driven pump fitted. Verify against the specific unit's nameplate |
| Bare engine dry weight | Published figures for this 3412C fire-pump engine family vary by literature edition: roughly 2,579-2,730 kg (5,686-6,018 lb) net dry, without optional attachments |
| Ground pressure | Not applicable — truck-mounted pumper package |
Dimensions
| Transport length/width/height | Not documented for the assembled truck-mounted package; depends on the truck chassis supplied with the unit |
| Bare engine length/width/height | Published bare-engine dimensions for this 3412C fire-pump family run roughly 1,980-2,000 mm (78.0-78.7 in) long, about 1,300 mm (51.2 in) wide, and 1,285-1,413 mm (50.6-55.6 in) high depending on literature edition |
| Wheelbase / track gauge | Not documented — depends on the truck chassis, which is not part of the Cat engine package |
| Ground clearance | Not applicable / not documented |
Performance
| Travel speed | Not documented — chassis travel performance is not part of the Cat engine package |
| Rated engine speed | 1,750-2,100 rpm band for this pump-drive engine family |
| Pump flow / discharge performance | Not published. This Cat product covers the drive engine only, not a complete pump-end performance curve |
| Gradeability | Not applicable |
Service capacities (summary)
| Fuel tank | Not a fixed factory figure; sized to the truck chassis or job-supplied tank |
| Cooling system | Roughly 58-59 L (15.5-16 US gal) refill capacity |
| Engine oil | Roughly 139 L (36.8 US gal) lube system refill capacity per one literature edition; oil change interval is stated as roughly 19,000 L of fuel or 250 service hours in that edition, and as 750 hours in another edition — treat as varying by configuration/series |
| Hydraulic system | Not applicable — no hydraulic system is part of this engine arrangement |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
SPT342 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | approx. 139 L (36.8 US gal) per one Cat 3412C fire-pump literature edition; other 3412/3412C literature (generator-set/marine editions) shows smaller sump capacities in the roughly 45-60 L (12-16 US gal) range - varies by configuration/series and oil pan/sump fitted, verify against the unit's own nameplate | Cat DEO or Cat DEO-ULS diesel engine oil. SAE 10W-30 for ambient -18C to 40C (0F to 104F); SAE 15W-40 for -9.5C to 50C (15F to 122F); use a multigrade for reliable cold starts, straight SAE 30 acceptable only in consistently warm climates |
| Cooling system | approx. 58-67 L (15.5-17.7 US gal) - figure varies by literature edition and by whether the skid/chassis carries a radiator or a heat-exchanger package | Cat ELC (Extended Life Coolant) or Cat DEAC (Diesel Engine Antifreeze/Coolant), full-strength premix to the freeze point required for the site's climate; do not mix coolant types; check glycol concentration each interval |
| Fuel tank | not a fixed factory figure - the SPT342 truck-mounted pumper package is sized to the truck chassis or a job-supplied tank; the OMM does not list one fixed tank capacity for this arrangement | No. 2-D diesel fuel, minimum cetane number 40; use a winter-blend or fuel conditioner in cold weather to prevent wax/gelling; keep water and sediment out of the tank |
| Transmission/powertrain compartment | not applicable | the SPT342 is a bare engine/pump-drive package mounted on a truck chassis; the OMM does not document an onboard transmission compartment as part of the Cat engine arrangement |
| Final drives (each) | not applicable | no final drives are part of this arrangement; this is a truck-mounted pump-drive engine package, not a mobile earthmoving machine |
| Hydraulic system and tank | not applicable | no integral hydraulic system is documented for this engine package; the driven pump end is mechanically coupled through a driveline coupling, not hydraulically powered |
| Axles/differentials | not applicable | the truck chassis axles that carry the SPT342 package are outside Cat's engine documentation scope; no fill spec is published under this model identity |
| Grease (spec only) | spec only - no fill quantity listed | Cat Multipurpose Grease (NLGI 2) for normal ambient service, roughly -30C to 40C; step down to a softer NLGI 1 or 0 grade, or Cat Utility Grease, for driveline coupling and idler bearings in sustained sub-zero cold-weather service |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar SPT342 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 10,000 h |
|
Servicing the SPT342 beyond the schedule
Predictive Maintenance and Fluid Analysis
Run S·O·S oil sampling on the 3412C at every oil change to track wear metals from its unit-injection pump and mechanical fuel system, since there is no ECM to flag developing faults electronically. Sample coolant regularly for corrosion-inhibitor depletion, critical on a V-12 with this much wetted liner surface. Watch turbocharger shaft play and pump-drive coupling vibration trends between services -- on a truck-mounted Pumper, coupling misalignment shows up early as bearing wear.
Corrective and Common Repairs
Fuel filter and injection-pump plunger issues are the most common driveability complaints on the mechanical 3412C, since dirty fuel affects the unit injectors directly with no electronic compensation. Turbocharger cartridge wear and aftercooler fouling show up as power loss under sustained pumping load. On the truck-mounted SPT342 specifically, check the pump-drive coupling and gearbox for leaks and misalignment before chasing an engine-side cause -- vibration transmitted from the driven pump is a frequent root cause misdiagnosed as an engine fault.
Overhaul and Rebuild Points
The 3412C's mechanical V-12 architecture typically runs toward 10,000 operating hours between major overhauls under well-maintained industrial duty, though heavy continuous pumping shortens that and standby service extends it. Overhaul work centers on cylinder liners, pistons, injection pump and injectors, and turbocharger cartridge. Because the SPT342 shares core components with SCT673, PM3412, and other 3412C-family pump-drive packages, rebuild parts commonality is strong -- confirm the arrangement number before ordering, since liner and injector calibrations vary by rating.
Seasonal and Environment Servicing
Truck-mounted Pumper units move between oilfield sites and see wide temperature swings, so verify coolant freeze protection and glycol concentration before cold-weather deployment and switch to a winter-grade fuel blend to avoid gelling in the mechanical injection system. In hot, dusty field conditions, shorten air cleaner and radiator-core cleaning intervals, since restricted airflow hits a turbocharged mechanical engine's power output faster than an electronically controlled one that can compensate.
SPT342 common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 1R-0749 | Filter-Fuel | Fuel system service | Check fitment → |
| 111-0716 | Filter Element-Fuel | Fuel system service | Check fitment → |
| 106-3969 | Filter Element As-Air | Air intake service | Check fitment → |
| 177-2059 | Filter Element As-Air | Air intake service | Check fitment → |
| 120-6666 | Element, Filter - Hydraulic Oil | Hydraulic service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
SPT342 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| ENGINE OVERSPEED | Engine speed exceeded the preset rpm limit; controller latches an immediate engine shutdown that cannot be cleared with a simple reset button | Governor linkage slipping or misadjusted, fuel rack sticking, or a faulty magnetic pickup/tachometer generator giving a false high reading | Stop and inspect governor linkage and fuel rack travel; verify actual speed with a handheld tachometer before returning to service |
| LOW OIL PRESSURE | Oil pressure switch sensed pressure below its set point; alarm only, engine keeps running on most NFPA 20 diesel controllers | Low oil level, worn oil pump, clogged suction screen, or a failed pressure switch | Check dipstick and top off oil, confirm reading on the engine oil pressure gauge, replace the switch if gauge reads normal |
| HIGH ENGINE (JACKET WATER) TEMPERATURE | Coolant temperature switch tripped above its set point, typically an alarm-only condition rather than an automatic shutdown | Low coolant level, fouled heat exchanger or raw-water strainer, stuck thermostat, or a slipping/failed jacket water pump | Check coolant level and the water temperature gauge, clean the heat exchanger and raw-water strainer, verify thermostat operation |
| FAILED TO START / OVERCRANK | Automatic start sequence completed its cranking attempts without the engine starting, and the auto-start system locks out | Air in the fuel system, weak battery bank, starter fault, or fuel starvation at the primary filter | Check fuel level and prime the fuel system with the priming pump, bleed air, verify both battery banks and starter motor, then attempt manual start |
| BATTERY FAILURE / LOW BATTERY VOLTAGE | One of the two required battery sources (or its charger) is reporting low or no voltage to the controller | Discharged or sulfated battery, failed battery charger, or corroded/loose battery cable connections | Load-test both batteries, check charger output, clean and tighten all battery terminals |
| LOW COOLANT LEVEL | Coolant level switch in the expansion tank detects level below the minimum threshold | External coolant leak at hoses, heat exchanger, or water pump seal, or evaporation from an open expansion tank cap | Inspect for visible leaks, pressure test the cooling system, top off with the correct coolant and re-check level switch operation |
| LOW FUEL LEVEL | Day tank or main fuel supply has dropped below the reserve level set point | Tank not refilled after a test run, fuel transfer pump not replenishing the day tank, or a leak in the fuel supply line | Refill the fuel tank, verify the fuel transfer pump is cycling, inspect supply lines for leaks |
| CONTROLLER NOT IN AUTOMATIC / COMMON TROUBLE | The fire pump controller selector is off automatic, or a common trouble relay has latched from any of the monitored conditions above | Selector switch left in manual/off after testing or maintenance, or an unresolved underlying alarm condition | Return the selector to the automatic position and investigate the specific alarm driving the common trouble signal before leaving the unit unattended |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
SPT342 attachments & work tools
Work-tool/attachment ecosystem
SPT342 is cataloged as Engine - Industrial, part of the Cat Pumper family. It does not carry a bucket, coupler, breaker, fork, or grapple attachment ecosystem like an excavator or loader; that concept does not apply to this unit.
Mounting arrangement
SPT342 is classified as a truck-mounted pumper package, meaning the engine is installed on a truck chassis rather than a skid or trailer frame. Skid or trailer mounting is not documented for this identity.
Pump end and driveline
Factory documentation for SPT342 covers the engine package only (air inlet and exhaust with turbocharger, cooling, fuel, and electrical/instrumentation groups). The actual pump end and its drive shaft, clutch, torque converter, or PTO coupling into the pump are not part of Cat's SPT342 documentation scope; that integration is handled by the truck/pump-package builder, not documented at the engine level.
Guarding and enclosure options
No factory guarding, canopy, or enclosure options specific to SPT342 are documented. Any guarding fitted is a function of the pump-package integrator's build, not a Cat-cataloged option for this engine.
Configuration notes
Two serial-prefix ranges are documented for SPT342, suggesting a mid-production specification update within the build series. Power rating figures beyond the base 3412C industrial engine identity are not reliably documented for this exact model and vary by configuration/series; verify with your dealer for a specific serial range.
All SPT342 assemblies by section
Every catalogued assembly group for the Caterpillar SPT342. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
9y-8810 Aftercooler Gp-Water
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 13 |
| 0S***90 | Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As) | 10 |
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 1 |
155-1054 Air Cleaner Gp
| 14***68 | Air Cleaner Group | 2 |
| 15***10 | Washer; (13.5x25.4x3-mm Thk) | 8 |
| 15***11 | Lockwasher | 8 |
148-2868 Air Cleaner Gp
| 10***88 | Cover As | 1 |
| 10***69 | Filter Element As-Air; (Primary) | 1 |
| 13***26 | Film-Instruction; (Top, Air Cleaner Cover) | 1 |
102-0292 Cartridge Gp-Turbocharger
| 10***92 | Cartridge Group-Turbocharger | 1 |
| 10***40 | Ring-Seal | 1 |
| 10***42 | Kit-Cartridge; (Turbocharger) | 1 |
4p-2785 Cartridge Gp-Turbocharger
| 1P***20 | Ring-Seal | 1 |
| 1S***70 | Nut (.687" O.D.) | 1 |
| 4P***85 | Cartridge Group-Turbocharger | 1 |
166-1112 Lines Gp-Air
| 00***40 | Connector; (Flared) | 2 |
| 00***54 | Nipple-Pipe | 1 |
| 00***21 | Tee-Union | 2 |
9y-8811 Lines Gp-Air
| 0L***29 | Bolt- 7.63 cm(3 In.) Long - Location "H" | 2 |
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 10 |
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 8 |
4p-2919 Manifold Gp-Exhaust
| 10***06 | Manifold-Exhaust; (End) | 2 |
| 10***07 | Manifold-Exhaust; (Middle) | 2 |
| 10***12 | Manifold-Exhaust | 2 |
155-1053 Mounting Gp-Air Cleaner
| 15***90 | Bracket As | 1 |
| 15***72 | Bracket As | 1 |
| 15***53 | Mounting Group-Air Cleaner | 1 |
155-1066 Mounting Gp-Muffler
| 15***93 | Bracket As | 1 |
| 15***66 | Mounting Group-Muffler | 1 |
| 1A***60 | Capscrew, Hex Head (1/2 - 13 X 2 G5); (Hex Head) (1/2-13x2 Gd 8 Z) | 4 |
155-1055 Muffler Gp
| 11***62 | Cap-Rain; (Muffler) | 1 |
| 14***14 | Clamp-Exhaust | 1 |
| 15***55 | Muffler Group | 1 |
9y-9826 Shield Gp-Heat -Manifold
| 0T***02 | Bolt; (3/8-16x0.625-In)(Shield To Head) | 4 |
| 2W***74 | Bracket | 2 |
| 5M***94 | Washer; Bracket To Tee, Bracket To Block, Tube As. To Tee, Tube As. To Oil Cooler | 4 |
9y-8813 Shield Gp-Manifold
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 6 |
| 0S***85 | Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine | 2 |
| 2W***53 | Bracket | 1 |
9y-8816 Shield Gp-Manifold -Rh
| 0T***02 | Bolt; (3/8-16x0.625-In)(Shield To Head) | 4 |
| 2W***74 | Bracket | 2 |
| 6B***82 | Spacer; (0.406x0.75x0.312-In Thk) | 2 |
169-1918 Sleeve-Exhaust Manifold
| 16***18 | Sleeve-Exhaust Manifold | 1 |
4p-2782 Turbocharger Gp
| 4P***82 | Turbocharger Group | 1 |
| 4P***85 | Cartridge Group-Turbocharger | 1 |
| 7E***82 | Housing | 1 |
102-0290 Turbocharger Gp
| 10***90 | Turbocharger Group | 1 |
| 10***92 | Cartridge Group-Turbocharger | 1 |
| 2W***42 | Housing-Turbine; (Turbine) | 1 |
9y-8814 Turbocharger Gp
| 10***90 | Turbocharger Group | 2 |
| 2N***66 | Locknut; (3/8-16-Thd)(High Temperature) | 16 |
| 4P***82 | Turbocharger Group | 2 |
Basic Engine
9y-9466 Adapter Gp-Flywheel
| 3G***56 | Washer-Special; (5.0mm Thk) | 12 |
| 8M***55 | Gear-Flywheel Starter; (136 Teeth) | 1 |
| 9Y***45 | Bolt-12 Point Head; (5/8-18x3.5-In) | 12 |
122-8966 Air Compressor Gp
| 12***66 | Air Compressor Group | 1 |
| 15***46 | Kit-Unloader; (Air Compressor) | 1 |
| 2B***95 | Cap Screw--Tube Assembly To Air Inlet Pipe | 2 |
126-6110 Air Compressor Gp
| 12***10 | Air Compressor Group | 1 |
| 15***46 | Kit-Unloader; (Air Compressor) | 1 |
155-1059 Air Compressor Gp
| 0L***65 | Stud; (3/8-16x1.75-In) | 2 |
| 12***66 | Air Compressor Group | 1 |
| 13***71 | Sump-Compressor | 1 |
4n-0965 Camshaft Gp
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 2 |
| 10***74 | Gear-Camshaft Drive; (86-Teeth) | 1 |
| 1B***05 | Key; (Woodruff) | 1 |
7e-8818 Cover Gp-Cylinder Block
| 0S***66 | Bolt-Pulley To Crankshaft Adapter | 3 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 2 |
| 0S***19 | Bolt,Machine Gear Retaining Part Of Kit P/N 1w***46 | 2 |
2w-9319 Cover Gp-Cylinder Block
| 0L***51 | Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold | 2 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 9 |
| 23***37 | Seal-Integral | 1 |
4n-6798 Cover Gp-Front Housing
| 0L***52 | Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex) | 6 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 3 |
| 1A***29 | Bolt (1-1/8") Tube Assembly To Transfer Drive Case | 2 |
9y-9827 Cover Gp-Oil Pan -Lh
| 06***58 | Seal-O-Ring; (Oil Pan Drain Plug) | 1 |
| 0S***87 | Bolt-Bracket Assembly To Timing Gear | 2 |
| 0S***88 | Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter | 5 |
9y-8482 Cover Gp-Valve Mechanism -Lh Service
| 27***83 | Seal-O-Ring | 7 |
| 4W***80 | Base-Valve Mechanism Cover | 4 |
| 5P***78 | Seal; (2.3-M) (Valve Mechanism Cover) | 0 |
4n-0922 Crankshaft Gp
| 14***67 | Seal Group-Crankshaft; (Front) | 1 |
| 14***68 | Seal-Crankshaft; (Rear)(Flywheel Housing) | 1 |
| 15***40 | Gear-Crankshaft; (99-Teeth) | 1 |
126-1375 Cylinder Block As
| 11***20 | Seal-O-Ring; (Mid-Liner) | 12 |
| 12***75 | Cylinder Block As | 1 |
| 14***17 | Seal-O-Ring; (140.20mm Id) | 12 |
126-1372 Cylinder Block As
| 12***72 | Cylinder Block As | 1 |
| 2W***15 | Insert-Liner Seat; (1.605-mm Thk)(1.59mm Thk) | 0 |
| 3P***23 | Bolt-Bearing Cap; (7/8-14x7.75-In) | 14 |
126-1374 Cylinder Block Gp
| 11***27 | Seal-O-Ring; (19.18mm Id) | 8 |
| 12***72 | Cylinder Block As | 1 |
| 12***74 | Cylinder Block Group | 1 |
126-1373 Cylinder Block Gp
| 11***27 | Seal-O-Ring; (19.18mm Id) | 8 |
| 12***72 | Cylinder Block As | 1 |
| 12***73 | Cylinder Block Group | 1 |
7e-3762 Cylinder Block Gp
| 12***75 | Cylinder Block As | 1 |
| 22***00 | Plate-Spacer | 2 |
| 22***01 | Gasket-Plate | 2 |
143-0047 Cylinder Head As
| 14***46 | Cylinder Head As | 1 |
| 14***47 | Cylinder Head As | 1 |
| 17***88 | Guide-Valve; (Standard) | 24 |
143-0046 Cylinder Head As
| 14***46 | Cylinder Head As | 1 |
| 1W***83 | Insert-Valve Seat; (Exhaust)(Standard) | 12 |
| 3B***23 | Core Plug--Flywheel Housing Pinion Shaft Hole | 12 |
9y-8510 Cylinder Head Gp
| 0L***52 | Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex) | 18 |
| 0T***55 | Bolt; (3/8-16x4.25-In)(Location S) | 2 |
| 10***20 | Adapter-Nozzle; (Direct Injection) | 12 |
141-3228 Cylinder Head Gp
| 12***21 | Valve-Exhaust | 12 |
| 12***22 | Valve-Inlet | 12 |
| 14***28 | Cylinder Head Group | 1 |
9y-8504 Damper & Pulley Gp
| 0L***29 | Bolt- 7.63 cm(3 In.) Long - Location "H" | 12 |
| 16***31 | Damper As | 2 |
| 6V***73 | Bolt; (5/8-18x8.5-In) | 12 |
7n-8881 Drive Gp-Auxiliary
| 0T***73 | Bolt (3/8) (63.5mm Long) (On Cab Of Cover Assem.) | 1 |
| 1B***17 | Ball Bearing | 1 |
| 1K***85 | Ring Part Of Kit P/N 1w***46 | 1 |
148-2870 Drive Gp-Auxiliary
| 14***67 | Shaft-Stub | 1 |
| 14***70 | Drive Group-Auxiliary | 1 |
| 14***71 | Bolt; (5/8-18x9-In) | 12 |
4n-6341 Gear Gp-Front -Timing
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 1 |
| 0T***73 | Bolt (3/8) (63.5mm Long) (On Cab Of Cover Assem.) | 1 |
| 11***17 | Plate-Thrust | 1 |
192-7253 Guard Gp-Belt
| 19***52 | Guard As | 1 |
| 19***53 | Guard Group-Belt | 1 |
| 1K***49 | Spacer Alternator To Brackets | 2 |
201-2010 Guard Gp-Belt
| 15***68 | Bracket As | 1 |
| 20***10 | Guard Group-Belt | 1 |
| 6V***85 | Nut-Full (1/4-20 Thd); (1/4-20-Thd)(Full) | 3 |
9y-8807 Housing Gp-Flywheel
| 0S***90 | Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As) | 1 |
| 0T***73 | Bolt (3/8) (63.5mm Long) (On Cab Of Cover Assem.) | 1 |
| 16***93 | Gasket-Cylinder | 1 |
9y-8505 Housing Gp-Front
| 0L***43 | Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender | 3 |
| 0L***52 | Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex) | 2 |
| 16***45 | Gasket-Cylinder Block | 1 |
9y-8806 Lifting Gp-Engine -Lh
| 0L***78 | Bolt,Machine Governor And Decelerator Control | 1 |
| 0S***85 | Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine | 4 |
| 2A***38 | Bolt-(3/4" X 2-1/4")-Rops Mounting Bracket To Fender | 2 |
9y-8809 Pan Gp-Oil -Engine
| 2P***03 | Bolt-Washer Head; (3/8-16x1.25-In) | 40 |
| 3B***51 | Plug (Use Without Low Temperature Sensor) | 2 |
| 4N***51 | Gasket; (Engine Oil Pan) | 1 |
7e-3973 Piston & Rod Gp
| 12***12 | Crown As-Piston | 1 |
| 13***61 | Ring-Piston; (Top)(Top) | 1 |
| 15***56 | Bolt-Special; (Oil Jet) | 1 |
7w-5926 Rocker Arm Gp
| 00***03 | Ring-Retaining | 2 |
| 0L***22 | Plug (.656" Dia.) | 2 |
| 10***03 | Screw; (3/8-24x1.67-In)(Intake) | 6 |
7w-5927 Rocker Arm Gp
| 00***03 | Ring-Retaining | 2 |
| 0L***22 | Plug (.656" Dia.) | 2 |
| 10***03 | Screw; (3/8-24x1.67-In)(Intake) | 6 |
7e-6385 Support Gp-Engine
| 0S***66 | Bolt-Pulley To Crankshaft Adapter | 4 |
| 4D***04 | Washer,Flat Cover Mtg,Accessory Drive | 4 |
| 4N***84 | Support-Front Engine | 1 |
4n-4303 Trunnion Gp-Engine
| 0S***73 | Bolt (102mm Long); (1/2-13x4-In) | 6 |
| 4N***03 | Trunnion Group-Engine; Engine Trunnion Group | 1 |
| 4W***50 | Adapter-Support | 1 |
4n-7352 Valve Mechanism Gp
| 10***89 | Bridge-Valve | 24 |
| 10***88 | Valve Lifter Assem | 24 |
| 23***85 | Bolt-12 Point Head; (3/4-16x11.5-In) | 1 |
Cooling System
9y-8479 Coolant Conditioner Gp
| 1W***06 | Hose Assem. 137 cm(53.94 In.) | 1 |
| 1W***18 | Filter-Coolant Conditioner; (Precharge) | 1 |
| 2N***37 | Elbow-Flared | 1 |
4n-2388 Cooler Gp-Engine Oil
| 10***77 | Seal-O-Ring; (100.97mm Id) | 2 |
| 4N***88 | Cooler Group-Engine Oil; Engine Oil Cooler Group | 1 |
| 7C***45 | Core As-Oil Cooler; (Water Lines) | 1 |
4w-0419 Core Gp-Oil Cooler
| 4W***19 | Core Group-Oil Cooler; -Transmission | 1 |
| 5M***14 | Pipe Plug Cylinder Block Oil Pressure | 2 |
9y-8480 Lines Gp-Water
| 1D***66 | Bolt Bracket Assembly To Yoke | 1 |
| 24***13 | Regulator-Water Temperature; (92-Deg C)(Water, Coolant Temperature) | 2 |
| 2H***93 | Ferrule | 1 |
9y-8506 Lines Gp-Water
| 03***16 | Elbow; (Pipe) | 1 |
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 4 |
| 0S***90 | Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As) | 3 |
155-1050 Mounting Gp-Radiator
| 11***76 | Washer-Snubbing | 6 |
| 11***54 | Isolator | 6 |
| 15***31 | Bracket As | 1 |
4n-5837 Pump Gp-Water
| 10***49 | Adapter-Inlet | 1 |
| 11***79 | Seal-O-Ring | 1 |
| 11***80 | Seal-O-Ring | 1 |
137-1339 Pump Gp-Water
| 0S***91 | Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***82 | 1 |
| 10***30 | Bearing As-Roller | 1 |
| 11***21 | Plug-Felt; (Water Pump Housing) | 1 |
155-1049 Radiator Gp
| 11***77 | Valve; (Hydraulic Tank Shutoff) | 1 |
| 12***28 | Bearing | 2 |
| 12***62 | Cap As-Radiator; (7-Psi)(Radiator) | 1 |
210-0150 Support Gp-Radiator
| 15***35 | Bracket As | 2 |
| 15***36 | Brace As | 2 |
| 1B***30 | Nut 7.938 mm(.312 In.) Thick | 4 |
Electrical And Starting System
145-5407 Air Dryer Gp
| 10***69 | Cartridge-Desiccant | 1 |
| 12***98 | Kit-Valve | 1 |
| 14***06 | Valve Group-Purge | 1 |
7g-7889 Alternator Gp-Charging
| 03***12 | Screw-Forming; (10-24x0.5-In) | 5 |
| 11***19 | Diode As-Alternator | 1 |
| 18***34 | Nut-Flange; (5/8-18-Thd) | 1 |
142-6117 Alternator Gp-Charging
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 1 |
| 0S***85 | Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine | 1 |
| 0S***87 | Bolt-Bracket Assembly To Timing Gear | 1 |
9y-8500 Control Gp-Engine Electronic
| 11***89 | Cover | 1 |
| 11***19 | Control Group-Engine Electronic | 1 |
| 6V***79 | Seal-O-Ring; (72.62-mm Id) | 1 |
115-7719 Control Gp-Engine Electronic
| 11***19 | Control Group-Engine Electronic | 1 |
| 3E***99 | Plate-Marking | 1 |
9x-9591 Converter Gp-Electrical
| 3K***06 | Screw-Machine-Relay To Bracket | 2 |
| 4B***63 | Washer; (4.7x11x1.2-mm Thk) | 2 |
| 9X***91 | Converter Group-Electrical; -Pulse Width Modulated | 1 |
9x-7779 Lamp Gp-Flood -Roading Lights
| 10***51 | Screw; (M4x32-mm) | 4 |
| 10***52 | Seal | 1 |
| 10***53 | Lens As; (Floodlight) | 1 |
211-0185 Lighting Gp-Flood
| 21***85 | Lighting Group-Flood | 1 |
| 21***21 | Light | 2 |
| 3B***04 | Lockwasher--Sheet Assembly To Angle Assembly | 6 |
167-9485 Lighting Gp-Flood
| 16***85 | Lighting Group-Flood | 1 |
| 6V***85 | Nut-Full (1/4-20 Thd); (1/4-20-Thd)(Full) | 4 |
| 7X***01 | Bolt-Plt; (1/4unc X 1 1/4) | 4 |
171-6631 Mounting Gp-Box
| 15***30 | Box As | 1 |
| 17***31 | Mounting Group-Box | 1 |
| 3K***89 | Locknut; (5/8-11-Thd) | 5 |
210-8632 Mounting Gp-Circuit Breaker
| 15***01 | Plate | 1 |
| 16***11 | Screw-Pan Head; (10-32x1-In) | 2 |
| 21***32 | Mounting Group-Circuit Breaker | 1 |
134-3154 Mounting Gp-Junction Box
| 13***54 | Mounting Group-Junction Box | 1 |
| 13***56 | Isolator | 4 |
| 2D***35 | Locknut (Visor To Bracket) | 8 |
163-2204 Mounting Gp-Sensor
| 15***13 | Bracket | 1 |
| 16***04 | Mounting Group-Sensor | 1 |
| 7X***46 | Bolt 5/8" X 2" Long (Second Type) | 2 |
165-6634 Sensor Gp-Coolant Level
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 16***34 | Sensor Group-Coolant Level; (Water, Coolant)(Scac Expansion Tank) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
239-9957 Sensor Gp-Liquid Level
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
| 23***57 | Sensor Group-Liquid Level; -Coolant Loss | 1 |
163-8516 Sensor Gp-Pressure
| 16***16 | Sensor Group-Pressure; -Boost And Engine Oil | 1 |
| 19***26 | Harness As-Sensor; (16-18 Ga Wire)(Engine Oil Temperature) | 1 |
| 19***27 | Harness As-Sensor; (14-Ga Wire)(Engine Oil Temperature) | 1 |
161-9926 Sensor Gp-Pressure
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 16***26 | Sensor Group-Pressure; -Atmospheric Air, Turbo Inlet | 1 |
| 18***40 | Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga) | 3 |
193-5518 Sensor Gp-Speed
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
| 19***18 | Sensor Group-Speed; -Engine | 1 |
| 8T***32 | Receptacle-Connector; (3-Pin)(Throttle Position Sensor) | 1 |
7x-1043 Sensor Gp-Temperature
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
| 7X***43 | Sensor Group-Temperature; (Scm Engine Oil Temp Sensor) | 1 |
| 8T***32 | Receptacle-Connector; (3-Pin)(Throttle Position Sensor) | 1 |
144-7486 Valve Gp-Solenoid
| 14***86 | Valve Group-Solenoid; -Transmission Brake | 1 |
| 19***04 | Valve Group-Solenoid | 1 |
| 19***14 | Connector | 2 |
120-4887 Wiring Gp-Engine
| 03***83 | Screw-Machine | 3 |
| 09***66 | Washer; (Hard) (4.5x9x1mm Thk) | 3 |
| 0L***52 | Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex) | 1 |
161-0152 Wiring Gp-Machine
| 09***04 | Tube-Heat Shrink; (19.1-mm Dia)(6-cm) | 0 |
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 2 |
Enclosures, Guards And Bases
250-8323 Enclosure As
| 07***00 | Switch As-Toggle; (Starter Engine Battery Charger) | 3 |
| 10***38 | End-Wire; (16-Ga) | 4 |
| 10***82 | Plate-Separator | 10 |
Engine Arrangement
151-4497 Engine Ar
| 11***75 | Pump Group-Gov & Fuel Inj | 1 |
| 12***87 | Wiring Group-Engine | 1 |
| 14***17 | Alternator Group-Charging | 1 |
Fuel System
4n-7935 Cover Gp-Fuel Filter Base
| 1P***36 | Gasket; (Fuel Priming Pump)(Fuel Priming Pump) | 1 |
| 4N***35 | Cover Group-Fuel Filter Base; Fuel Filter Base Cover Group | 1 |
| 6N***14 | Cover-Filter Base; (Fuel) | 1 |
7e-0524 Drive Gp-Governor & Fuel Pump
| 1T***14 | Bolt-12 Point Head; (5/16-18x1-In) | 1 |
| 6N***23 | Slide | 2 |
| 6N***56 | Weight-Advance | 2 |
4n-6925 Filter Gp-Fuel
| 1R***49 | Filter-Fuel; (Advanced Efficiency)(Secondary) | 2 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
| 4N***25 | Filter Group-Fuel; Filter Group-Fuel | 1 |
9y-8483 Filter Gp-Primary Fuel
| 00***62 | Elbow (To Primary Filter Base) | 1 |
| 03***94 | Connector-Flared | 1 |
| 0S***91 | Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***82 | 2 |
4p-8235 Governor Gp
| 10***23 | Spacer; (7.5x11.3x17-mm Thk) | 3 |
| 1N***00 | Sleeve-Rack Control | 1 |
| 1N***01 | Spring-Link | 1 |
4p-8482 Lever Gp-Governor Control
| 1H***00 | Pin--To Compression Release Shaft | 1 |
| 4P***89 | Lever As | 1 |
| 4P***52 | Clamp | 1 |
167-9403 Lines Gp-Fuel
| 03***94 | Connector-Flared | 2 |
| 03***55 | Locknut; (5/16-18-Thd)(Marked X) | 2 |
| 11***16 | Filter Element-Fuel; (Fuel, Water Separator) | 1 |
9y-8476 Lines Gp-Fuel Filter
| 03***47 | Elbow-Filtered Fuel From Based Assembly | 4 |
| 0S***88 | Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter | 7 |
| 0S***19 | Bolt,Machine Gear Retaining Part Of Kit P/N 1w***46 | 1 |
4p-9632 Lines Gp-Fuel Injection
| 10***38 | Screw-Machine | 5 |
| 10***39 | Screw As | 3 |
| 10***88 | Clamp As | 1 |
4p-9631 Lines Gp-Fuel Injection
| 10***38 | Screw-Machine | 3 |
| 10***39 | Screw As | 3 |
| 10***88 | Clamp As | 1 |
4p-9484 Lines Gp-Fuel Injection
| 05***94 | Bolt-12 Point Head; (3/8-16x1.75-In) | 5 |
| 10***64 | Tube As | 1 |
| 13***04 | Nozzle As-Fuel Injection | 12 |
116-4074 Pump Gp-Fuel Injection
| 0S***15 | Bolt 19 mm (.75 In.) Long Return Air Console To Enclosed Rops | 26 |
| 10***33 | Pump Group-Fuel Injection | 12 |
| 11***94 | Bushing | 12 |
108-6633 Pump Gp-Fuel Injection
| 10***02 | Bonnet-Valve | 1 |
| 10***04 | Plunger & Barrel As | 1 |
| 10***33 | Pump Group-Fuel Injection | 1 |
4n-3287 Pump Gp-Fuel Priming
| 10***08 | Pump As; (Fuel Priming) | 1 |
| 1P***36 | Gasket; (Fuel Priming Pump)(Fuel Priming Pump) | 1 |
| 4N***87 | Pump Group-Fuel Priming; Pump Group-Fuel Priming | 1 |
145-8855 Pump Gp-Fuel Priming
| 13***41 | Pump Group-Fuel Priming; (Hand) | 1 |
| 14***55 | Pump Group-Fuel Priming | 1 |
| 1B***90 | Bolt; (5/16-18x1.375-In)(Rh Front Cover) | 1 |
8n-3365 Pump Gp-Fuel Priming
| 10***08 | Pump As; (Fuel Priming) | 1 |
| 1B***82 | Bolt (1.25 In. Long X .313 In. Dia.) | 1 |
| 1J***71 | Seal (10.52 Degrees I.D.); Seal-O-Ring -- To Adapter | 2 |
116-4075 Pump Gp-Gov & Fuel Inj
| 0S***16 | Screw,Cap,Hexagon H Receptacle Mtg; Bolt Brackets To Firewall Assembly | 7 |
| 10***39 | Solenoid-Rotary | 1 |
| 10***73 | Pump Group-Fuel Transfer | 1 |
116-4073 Pump Gp-Gov & Fuel Inj
| 0S***16 | Screw,Cap,Hexagon H Receptacle Mtg; Bolt Brackets To Firewall Assembly | 2 |
| 10***82 | Housing As-Drive | 1 |
| 10***16 | Plug; (3/8-32-Thd)(3/8-32 Unef 2a Thd) | 1 |
108-3797 Servo Gp-Rotary -Fuel Inj Pump
| 00***93 | Seal-O-Ring (Id=52.07mm); (52.07-mm Id) | 1 |
| 0S***16 | Screw,Cap,Hexagon H Receptacle Mtg; Bolt Brackets To Firewall Assembly | 1 |
| 10***95 | Cover-Oil Pump | 1 |
Hydraulic System
201-2042 Lines Gp-Hydraulic
| 15***74 | Fire Extinguisher | 1 |
| 15***74 | Bracket | 1 |
| 20***42 | Lines Group-Hydraulic | 1 |
155-1058 Lines Gp-Hydraulic
| 12***72 | Seal; (135-cm) | 0 |
| 14***67 | Cover As | 1 |
| 14***70 | Support As | 3 |
184-9920 Plug Gp-Hydraulic Lines
| 00***49 | Connector-Second Type | 1 |
| 03***61 | Elbow; (45 Degree) | 4 |
| 06***93 | Bushing-Reducer; (1/2-14 Nptf) | 1 |
144-7575 Pump & Mtg Gp-Hydraulic
| 14***75 | Pump & Mtg Group-Hydraulic | 1 |
| 15***62 | Isolator | 2 |
| 2D***35 | Locknut (Visor To Bracket) | 12 |
159-2383 Tank Gp-Hydraulic
| 14***69 | Box Group-Storage | 1 |
| 15***51 | Bracket As | 1 |
| 15***83 | Tank Group-Hydraulic | 1 |
Lubrication System
9y-2989 Breather Gp
| 2N***09 | Clamp; (V-Band) | 1 |
| 4F***90 | Seal (2.10" Inside Diameter) | 1 |
| 4N***68 | Breather As; (Crankcase) | 1 |
4n-2481 Fastener Gp-Oil Pump Mounting -Engine
| 0L***43 | Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender | 2 |
| 0S***90 | Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As) | 1 |
| 4N***81 | Fastener Group-Oil Pump Mounting; Oil Pump Mounting Fastener Group | 1 |
2w-6537 Filler Gp-Engine Oil
| 12***97 | Tube As | 1 |
| 2N***09 | Clamp; (V-Band) | 1 |
| 2W***37 | Filler Group-Oil | 1 |
9y-1911 Filter Gp-Engine Oil
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 5 |
| 1P***67 | Plunger; (Engine Oil Cooler Relief Valve) | 1 |
| 1R***08 | Filter As-Engine Oil; (Advanced Efficiency)(High Efficiency) | 2 |
159-2381 Fumes Disposal Gp
| 15***81 | Fumes Disposal Group | 1 |
| 5P***69 | Hose; (288-cm Each) | 0 |
| 6K***06 | Strap-Cable -Lines From Rotate Valve | 8 |
9y-0992 Gauge Gp-Oil Level (Dipstick) -Lh Rear
| 0L***51 | Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold | 1 |
| 0S***91 | Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***82 | 1 |
| 11***68 | Seal-O-Ring; (15.54mm Id) | 1 |
9y-8484 Lines Gp-Engine Oil
| 0L***51 | Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold | 2 |
| 0L***70 | Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case | 5 |
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 1 |
9y-8812 Lines Gp-Turbocharger Oil
| 06***61 | Seal-O-Ring (Id=40.87mm) | 2 |
| 0L***51 | Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold | 5 |
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 10 |
6n-1030 Pump Gp-Engine Oil
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 4 |
| 1M***44 | Bolt; (3/8-16x2-1/4 In) | 2 |
| 1W***38 | Shaft As-Pump Drive; (8-Teeth) | 1 |
Operator Station
173-2494 Box Gp-Instrument Panel
| 11***76 | Washer-Snubbing | 4 |
| 11***54 | Isolator | 4 |
| 14***88 | Bracket As; (Rh) | 1 |
211-9314 Fire Extinguisher Gp
| 13***95 | Isolator | 10 |
| 13***96 | Washer; (10.2x39.6x2.3-mm Thk) | 10 |
| 14***75 | Gasket | 1 |
177-2048 Lines Gp-Instrument Panel
| 17***48 | Lines Group-Instrument Panel | 1 |
| 20***98 | Floorplate As | 1 |
| 2K***73 | Locknut Inside Guard Assembly | 4 |
159-2243 Mounting Gp-Instrument Panel
| 15***19 | Bracket As | 1 |
| 15***43 | Mounting Group-Instrument Panel | 1 |
| 3B***16 | Washer,Lock Radiator Guard | 4 |
201-2015 Mounting Gp-Instrument Panel
| 09***69 | Spacer; (7.5x12x12-mm Thk) | 6 |
| 15***81 | Bracket As | 1 |
| 15***89 | Bracket As | 1 |
205-7281 Mounting Gp-Platform
| 03***55 | Locknut; (5/16-18-Thd)(Marked X) | 4 |
| 13***95 | Isolator | 6 |
| 13***96 | Washer; (10.2x39.6x2.3-mm Thk) | 12 |
161-9205 Panel Gp-Control
| 11***93 | Lockwasher | 4 |
| 14***83 | Bracket | 1 |
| 14***42 | Washer; (10.2x18.5x2.5-mm Thk) | 4 |
150-5061 Panel Gp-Instrument
| 15***61 | Panel Group-Instrument | 1 |
| 23***06 | Seal-Ring | 2 |
| 23***07 | Bearing-Roller | 2 |
149-2737 Panel Gp-Instrument
| 14***37 | Panel Group-Instrument | 1 |
| 16***53 | Clamp | 8 |
| 16***97 | Hose; (10.2cm Each) | 0 |
Prime Package
136-3535 Accumulator Gp
| 11***52 | Strip-Terminal | 1 |
| 12***00 | Wrap-Spiral; (3/4-In Od)(90-cm) | 0 |
| 13***35 | Accumulator Group | 1 |
143-3744 Box Gp-Storage
| 00***70 | Nipple-Strainer To Flange | 1 |
| 03***47 | Elbow-Filtered Fuel From Based Assembly | 1 |
| 03***68 | Elbow (For Use With Shallow Pan) | 1 |
141-5365 Box Gp-Storage
| 01***42 | Screw-Machine; (6/32x1-In) | 1 |
| 07***00 | Switch As-Toggle; (Starter Engine Battery Charger) | 2 |
| 10***40 | Socket-Relay | 1 |
141-5369 Box Gp-Storage
| 14***69 | Box Group-Storage | 1 |
| 16***21 | Adapter | 2 |
| 16***27 | Hose As | 2 |
208-3731 Bracket Gp-Mounting
| 18***98 | Nut | 1 |
| 18***99 | Plug | 1 |
| 18***18 | Seal-O-Ring | 1 |
180-4742 Bracket Gp-Mounting
| 00***43 | Elbow; (12.7mm Id) | 1 |
| 00***15 | Nipple-Pipe; (59.4mm Long) | 2 |
| 00***10 | Tee; (Pipe) | 1 |
173-0214 Bracket Gp-Mounting
| 03***75 | Elbow | 1 |
| 03***59 | Connector | 1 |
| 03***23 | Elbow-Flared | 1 |
171-6627 Bumper Gp
| 03***21 | Bolt-Allen Hd; (3/8unc X 1) | 6 |
| 13***66 | Pump Group-Gear | 1 |
| 17***27 | Bumper Group | 1 |
184-9769 Door Gp-Access
| 13***98 | Gauge-Sight; (Hydraulic Oil Level) | 1 |
| 15***17 | Tank As-Hydraulic | 1 |
| 15***18 | Cover | 1 |
163-2381 Fender Gp
| 13***98 | Latch As | 2 |
| 16***81 | Fender Group | 1 |
| 20***50 | Seal; (177.5-cm) | 0 |
150-5384 General Ar-Pumper
| 11***52 | Plate & Film Group; -Engine Information | 1 |
| 15***84 | General Ar-Pumper | 1 |
| 3N***90 | Plate Serial Number; On R.H. Rear Bank Of Cylinder Block As Viewed From Rear Of Engine | 1 |
171-6638 Guard Gp-Drive Shaft
| 17***38 | Guard Group-Drive Shaft | 1 |
| 18***69 | Door Group-Access | 2 |
| 21***36 | Bracket As | 1 |
155-1060 Lines Gp-Accumulator
| 15***60 | Lines Group-Accumulator | 1 |
| 21***25 | Cylinder As | 1 |
| 21***26 | Gasket | 1 |
212-2774 Lines Gp-Return
| 14***66 | Block | 2 |
| 14***67 | Block | 1 |
| 14***68 | Block | 2 |
155-1052 Lines Gp-Starting Motor
| 14***65 | Box Group-Storage | 1 |
| 14***44 | Box Group-Storage | 1 |
| 15***52 | Lines Group-Starting Motor | 1 |
155-1051 Mounting Gp-Engine & Tmsn
| 12***72 | Seal; (135-cm) | 0 |
| 14***06 | Door | 1 |
| 14***08 | Handle | 1 |
152-5935 Mounting Gp-Hydraulic Tank
| 13***05 | Bracket As | 1 |
| 15***04 | Bracket As; (Upper Cable Rack) | 1 |
| 15***05 | Plate; (Lower Cable Rack) | 1 |
167-9441 Mounting Gp-Pump
| 15***67 | Washer; (16.66x30.18x3.58-mm Thk) | 4 |
| 15***69 | Nut; (5/8-11-Thd) | 2 |
| 15***70 | Lockwasher | 2 |
209-2365 Mounting Gp-Rack
| 20***32 | Bracket As | 1 |
| 20***33 | Bracket As | 1 |
| 20***65 | Mounting Group-Rack | 1 |
155-1061 Mounting Gp-Tank
| 15***20 | Bumper As-Rear | 1 |
| 15***54 | Bracket As | 1 |
| 15***61 | Mounting Group-Tank | 1 |
156-7561 Mounting Gp-Valve
| 15***61 | Mounting Group-Valve | 1 |
| 18***68 | Sheet | 1 |
| 18***79 | Bracket As | 1 |
166-1156 Mounting Gp-Valve
| 15***64 | Fender | 2 |
| 16***56 | Mounting Group-Valve | 1 |
136-3566 Pump Gp-Gear
| 13***54 | Mounting Group-Junction Box | 1 |
| 13***66 | Pump Group-Gear | 1 |
| 14***75 | Pump & Mtg Group-Hydraulic | 1 |
155-1057 Shaft Gp-Drive
| 15***84 | Guard As | 1 |
| 15***57 | Shaft Group-Drive | 1 |
| 16***01 | Hinge | 2 |
136-3536 Valve Gp-Flow Control
| 00***70 | Tee-Pipe | 1 |
| 00***83 | Nipple-Pipe; (Hexagon) | 1 |
| 03***68 | Elbow (For Use With Shallow Pan) | 1 |
Service Equipment And Supplies
6l-4502 Chart-Plate & Film
| 13***20 | Brake As | 1 |
| 14***49 | Hub-Adapter | 1 |
| 14***50 | Disc | 1 |
212-3838 Film Gp
| 19***31 | Plate | 1 |
| 21***38 | Film Group | 1 |
| 2K***73 | Locknut Inside Guard Assembly | 2 |
Transmission
163-2229 Lines Gp-Transmission Oil
| 13***97 | Clamp-Hose | 4 |
| 13***99 | Fitting | 2 |
| 13***60 | Adapter As | 1 |
211-7543 Valve Gp-Lockup Clutch & Sol
| 00***40 | Connector; (37 Degree) | 4 |
| 03***35 | Connector-Flared | 1 |
| 03***51 | Elbow )-Inlet Port To Valve Group | 1 |
SPT342 serial number reference
On the SPT342 pumper package the PIN plate is mounted on the engine/pump base frame or enclosure near the control panel, separate from the engine's own serial tag on the block. Read the first three characters as the serial prefix (identifies the specific model/build series, here 3CZ) and the digits that follow as the sequential unit number within that prefix.
| Prefix | Identifies | Notes |
|---|---|---|
| 3CZ | SPT342 Truck Mounted Pumper, 3412C engine | Only documented prefix for SPT342 in Cat parts-catalog listings. Range splits into 3CZ1-00418 and 3CZ00419-up on a running change to the air inlet and exhaust system (turbocharger cartridge group); confirm exact fit for your unit with your dealer. |
Frequently asked questions
What engine powers the Caterpillar SPT342?
The SPT342 Pumper package uses Caterpillar's 3412C, a mechanical, turbocharged-aftercooled V-12 diesel of roughly 27 liters displacement with unit fuel injection and no electronic engine control.
What is the operating weight of the Caterpillar SPT342?
No single operating weight is published for the SPT342 package, since it varies with the truck chassis, pump end, and tankage specified by the equipment integrator. The bare 3412C engine itself weighs roughly 2,300-2,600 kg (about 5,070-5,730 lb) dry.
What replaced the Caterpillar SPT342?
No specific named successor is documented for the SPT342 truck-mounted Pumper package. Caterpillar's broader 3412 engine line moved from the mechanical 3412C to the electronically controlled, HEUI-injected 3412E as emissions and control requirements tightened, and pump-drive integrators shifted toward electronically governed engines over time.
What SPT342 owners discuss
What engine is under an SPT342, and does it share a power pack with its pumper siblings?
The SPT342 is Caterpillar's truck-mounted pumper, one of three body styles built on the same "342/343" pumper family alongside skid-mounted and trailer-mounted versions. It's powered by the 3412C V-12 diesel with mechanical governing: an inline injection pump and rack, not full electronic unit injection. Don't assume it shares a power pack spec with its skid- or trailer-mounted siblings. Each carries its own serial prefix and its own build spec, so match the engine's own rating plate rather than borrowing numbers from a sibling listing. Quoted output figures vary a lot source to source; treat any bkW/bhp number you find as configuration-dependent and confirm it off the plate.
What's the most commonly reported fuel-system quirk on these mechanical 3412C pumper engines?
The recurring complaint on mechanical 3412-family engines like this one (inline pump and rack, not the later electronic 3412E) is a rack that sticks after the unit sits idle for a while. The engine hangs at a fixed RPM and won't idle down or shut off cleanly. Owners trace it to varnish and light corrosion building up inside the pump housing from infrequent running. Carbon buildup on injector tips is the other common complaint, showing up as rough running or a power dip under load. Regular short run cycles when the pumper isn't dispatched help keep the rack free. A stuck rack can prevent a normal shutdown, so have your dealer verify pump and rack condition before returning the unit to service.
What electrical or sensor problems come up on this engine family?
Wiring harness terminals are a known weak point on this engine platform. Stamped terminals can work loose or corrode and cause intermittent no-communication faults between the ECM and a diagnostic tool, or dropouts on the speed/timing sensor circuit. Owners chasing a "won't talk to the diagnostic tool" complaint on gensets and pumper decks built off the same block often trace it back to a harness connector rather than the ECM itself. Inspect and reseat harness connectors, especially near the flywheel housing where the timing sensor lives, before condemning a sensor or control module.
How does the pump-delivery control system work, and what wears on it?
These units run from a portable remote control console tethered by a cable roughly 38 m (125 ft) long. It lets the operator run the deck engine, select gear, set throttle, dial in pump delivery rate, and trigger emergency shutdown from a safe distance, with delivery rate and engine speed shown on digital displays. The console cable and its socket connectors take the most wear from repeated plug and unplug cycles and yard handling. Look for damaged pins or a console that loses connection intermittently. Because this console is tied into emergency shutdown, have your dealer verify the control loop functions correctly before relying on it in the field.
What cooling or general wear patterns show up on these engines under pumping duty?
Overheating complaints on the wider mechanical 3412 family usually trace back to ordinary items: deteriorated hoses and gaskets, a radiator packed with debris, a tired water pump, or a fan shroud missing sections and letting air bypass the core. A truck-mounted pumper often idles or holds a fixed high RPM through long pumping cycles rather than varying load like a mobile machine, so the cooling package gets less airflow relief between cycles than a machine that's constantly moving. Keeping the shroud complete and the core clean matters more here as a result. Rising oil consumption on higher-hour units usually points to worn rings or tired valve seals, same as the rest of the 3412 family.
What should I check when looking at a used SPT342?
Confirm the serial prefix reads 3CZ. That's what ties the unit to the truck-mounted pumper configuration; a different prefix on a "342/343" tag means you're actually looking at the skid- or trailer-mounted sibling with a different spec. Start the engine cold and confirm the rack isn't hanging or slow to respond, since a stuck rack is the classic tell on a unit that's sat idle in a yard. Check harness connectors near the ECM and timing sensor for corrosion. Run the remote console through gear select, throttle, and emergency shutdown to confirm it still communicates over its full cable run. Check the fan shroud and radiator core for missing panels or packed debris. Pull service records if available, since oilfield well-service duty runs harder hour-for-hour than lighter pumping work. Have your dealer verify engine hours against ECM data and confirm the rating plate before you commit.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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