Caterpillarengine - industrialpumper
Caterpillar SUF557
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar SUF557 is not a mobile machine. It is a Caterpillar arrangement/serial-number code for a skid-mounted Pumper power package built around the C-12 industrial diesel engine, an inline-six, turbocharged-aftercooled unit displacing roughly 11.9 to 12.0 L (728 in3) with direct fuel injection and Caterpillar electronic unit injection. The confirmed serial prefix is LTF (S/N LTF1-Up), though dealer confirmation is recommended for this specific arrangement. The package has no operator station, no undercarriage, and no transmission or final drives in the traditional sense - it is a stationary or skid-mounted drive unit that couples the C-12 to an external pump end. Skid frame, pump end, and enclosure are set by the equipment packager, so configuration varies by installation.
Because the SUF557 is an engine arrangement rather than a titled machine model, there is no documented series or generation split tied specifically to this code; the underlying C-12 industrial engine platform itself evolved through electronic control updates and rating revisions during its production run. What matters most in the used and parts market today is the C-12 engine core: its cylinder block, electronic unit injectors, turbocharger, and cooling system components are shared broadly across Cat's C-10/C-12 industrial and marine families, which keeps parts support and rebuild expertise widely available. Buyers should treat weight, dimensions, and pump-end specifications as packager-defined rather than factory-fixed, and confirm the serial prefix and arrangement details with a Cat dealer before ordering parts.
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 SUF557 specifications
Engine
| Unit identity | SUF557 is a Caterpillar serial-number-prefix/arrangement code for a skid-mounted Pumper package built around the C-12 industrial diesel engine. It is not a standalone catalog machine with its own published spec sheet. |
| Base engine | Caterpillar C-12, four-stroke, inline-6, direct-injection diesel |
| Displacement | 12.0 L (732 cu in) |
| Bore x stroke | 130 mm x 150 mm (5.1 in x 5.9 in) |
| Cylinders | 6, inline |
| Gross power | Not published for this specific arrangement. Across C-12 industrial/marine/on-highway ratings the platform spans roughly 254 to 366 kW (340 to 490 hp) at 1800 to 2300 rpm depending on rating and governed speed; the exact rating fitted to SUF557 pump duty is not documented in available sources |
| Emissions tier | Not documented for this arrangement code. Verify against the engine serial number/arrangement number with a dealer, since C-12 industrial ratings spanned multiple emissions certifications over the engine's production life |
Weights
| Operating/shipping weight | Not published for the SUF557 skid package. Weight depends on skid frame, pump end, and mounted accessories, none of which are standardized under this arrangement code |
| Ground pressure | Not applicable — stationary/skid-mounted unit, not a tracked or wheeled machine |
Dimensions
| Transport length/width/height | Not published. Skid footprint varies with the pump end and enclosure selected by the packager |
| Wheelbase/track gauge | Not applicable — no chassis or undercarriage; unit is skid-mounted |
| Ground clearance | Not documented for this arrangement |
Performance
| Travel speed | Not applicable — SUF557 is a stationary skid-mounted power pack, not a self-propelled machine |
| Pump performance | Flow and head figures are set by the specific pump end paired with the C-12 drive engine and are not standardized or published under the SUF557 code itself |
| Gradeability | Not applicable |
Service capacities (summary)
| Engine oil system | Follows the base C-12 engine platform capacity; figure varies by sump/pan configuration and is not separately published for the SUF557 arrangement — confirm against the specific operation and maintenance manual for this unit |
| Cooling system | Follows the base C-12 engine platform capacity; varies by radiator/heat-exchanger configuration on the skid and is not separately published for SUF557 |
| Fuel tank | Not published — day tank or skid fuel tank size is set by the equipment packager, not by the C-12 engine or the SUF557 code |
| Hydraulic system | Not applicable/not documented — no standard hydraulic system is defined at the SUF557 arrangement level |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
SUF557 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | approx. 36 L (9.4 US gal), per the C-12 industrial diesel package the SUF557 pumper is built around; confirm exact fill on the skid-specific data plate | Cat DEO or DEO-ULS Diesel Engine Oil. SAE 15W-40 for general ambient use; SAE 10W-30 above -18 C (0 F) and below 40 C (104 F); Cat DEO Cold Weather SAE 0W-40 for cold climates down to -40 C (-40 F). Use API CJ-4/Cat ECF-3 rated oil |
| Cooling system | approx. 10.2 L (2.7 US gal) at the base C-12 engine level; the pumper skid's radiator/expansion tank adds to this and is not documented in publicly available literature for this package | Cat ELC (Extended Life Coolant), an organic-acid-technology antifreeze/coolant good for extended service life. Cat DEAC (Diesel Engine Antifreeze/Coolant) is the traditional alternative, but needs supplemental coolant additive conditioning on a regular interval |
| Fuel tank (skid-mounted) | not documented in publicly accessible sources for this pumper package — varies by skid configuration; check the unit's OMM or data plate | No. 2-D diesel fuel meeting Cat's fuel specification; low-sulfur or ultra-low-sulfur diesel required for emissions-certified units |
| Hydraulic system / pump drive | not documented — the SUF557 designation covers the engine/skid power-pack only; the driven pump end (and any hydraulic drive circuit) is a separate assembly with its own fluid spec not captured in the engine OMM | not documented for this exact configuration — verify with your Cat dealer or the pump manufacturer's literature |
| Grease (general chassis/PTO points) | spec only, no OMM-listed quantity | Cat multipurpose grease, NLGI grade selected per ambient temperature per the Cat lubricant chart |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar SUF557 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 3,000 h |
|
| Every 5,000 h |
|
| Every 6,000 h |
|
| Every 10,000 h |
|
Servicing the SUF557 beyond the schedule
Predictive Maintenance & Fluid Analysis
Run S·O·S oil analysis every 250 hours on the C-12 crankcase to catch bearing and turbocharger wear before it reaches the pump-end drive coupling. Pair it with coolant Level 1 sampling every 500 hours and Level 2 analysis annually to protect the cooling system feeding this stationary skid unit. Track brake-specific oil consumption against baseline; a threefold rise on this pump-drive engine signals an approaching overhaul rather than a simple top-off.
Corrective & Common Repairs
Most SUF557 field repairs center on the C-12's fuel and turbo systems rather than any drivetrain, since the skid has no transmission or final drives. Expect primary and secondary fuel filter and water-separator element replacements, electronic unit injector preload resets, and turbocharger cartridge inspections for oil carryover. Water pump seal leakage and crankshaft vibration damper deterioration are common wear points under continuous stationary duty.
Overhaul & Rebuild Points
At major overhaul, focus on the C-12's rotating assembly and mounting hardware rather than chassis or axle components. Replace main, rod, and camshaft bearings, crankshaft seals, and the vibration damper as standard practice. Inspect the skid mounting bolts and the pump drive-coupling alignment, since a stationary power pack transmits all torque reaction into the skid frame rather than a mobile chassis. Recondition the oil cooler core and cylinder head assembly before return to service.
Seasonal & Environmental Servicing
Because the SUF557 has no factory-guaranteed cab or enclosure, cold-weather protection depends entirely on the packager's enclosure and any jacket-water or oil-pan heaters fitted to the skid. Below 0 C, use an ether starting aid only if the C-12 is not equipped with an air inlet heater, and drain fuel tank water daily to prevent filter waxing. In dusty or high-ambient sites, shorten air cleaner and radiator cleaning intervals to protect the skid-mounted cooling package.
SUF557 common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 1R-0749 | Filter-Fuel | Fuel system service | Check fitment → |
| 129-0375 | Bowl As-Water Collection | Fuel system service | Check fitment → |
| 133-5673 | Element | Fuel system service | Check fitment → |
| 6I-2505 | Filter Element As-Air | Air intake service | Check fitment → |
| 6I-2506 | Filter Element As-Air | Air intake service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
SUF557 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CID 100 - FMI 1 | Engine oil pressure low warning | Low oil level, worn oil pump, plugged filter, or a failing oil pressure sensor/wiring | Check oil level and gauge reading first; if oil is correct, test the sensor circuit before condemning the pump |
| CID 110 - FMI 0 | Coolant temperature above normal warning | Low coolant level, plugged radiator or heat exchanger, failed thermostat, or fan drive issue | Shut down and allow to cool; check coolant level and radiator/heat exchanger for blockage before restarting |
| CID 111 - FMI 1 | Coolant level low warning | Coolant loss from an external leak, or a faulty level sensor/float | Inspect for external leaks, top off coolant to spec, verify sensor operation |
| CID 190 - FMI 2 | Engine speed/timing sensor signal erratic, intermittent, or incorrect | Damaged sensor wiring, poor connector, sensor air gap out of spec, or sensor failure | Inspect sensor wiring and connectors, then check and reset sensor air gap to spec |
| CID 254 - FMI 12 | Electronic control module failure | Internal ECM hardware fault, corrupted software/calibration, or a severe power-supply disturbance | Cycle key power, check ECM power and ground circuits, connect a service tool to confirm before replacing the ECM |
| CID 1 (through 6) - FMI 3 | Cylinder injector solenoid circuit voltage above normal | Short to a higher-voltage circuit in the injector wiring harness, or a failed injector solenoid | Inspect injector harness for chafing or shorts, test solenoid resistance, repair or replace as needed |
| CID 41 - FMI 3/4 | 8-volt sensor supply voltage above or below normal | Shorted or open sensor supply wiring, an overloaded supply from a shorted sensor, or an ECM supply fault | Disconnect sensors fed by this supply one at a time to isolate the short, then check wiring continuity and the ECM connector |
| CID 94 - FMI 1 | Fuel pressure low warning | Plugged fuel filter, air in the fuel system, weak transfer pump, or a restricted supply line | Check fuel level and filters first, inspect for air leaks on the suction side, then test transfer pump pressure |
| CID 105 - FMI 0 | Intake manifold air temperature above normal warning | Restricted air intake, fouled aftercooler core, high ambient temperature, or a failing intake air temperature sensor | Check the air filter and intake for restriction, inspect the aftercooler core for debris, verify the sensor reading against a known-good gauge |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
SUF557 attachments & work tools
Not applicable - bare industrial power package
SUF557 is a skid-mounted industrial engine package (a pumper/power-pack drive unit built on the C-12 / 3176C-family engine line), not a machine with a work-tool interface. It has no bucket, blade, coupler, or ground-engaging-tool ecosystem.
Driven equipment interface
Output is a flywheel/PTO or direct-coupled shaft arrangement for driving an external pump or similar skid-mounted equipment. Coupling hardware (clutch, flywheel housing, driveshaft) is selected per the pump or application it powers, not offered as a work-tool attachment lineup.
Hydraulic provisions
Any hydraulics on this package serve engine and accessory functions (fan drive, starting, cooling) rather than external work-tool circuits. No auxiliary hydraulic work-tool kit is documented for this unit.
Guarding and mounting configuration
Factory configuration is limited to skid-mount base, coupling guard, and standard industrial engine guarding options common to Cat industrial power packages; no machine-style attachment options (quick couplers, forks, augers, etc.) apply.
All SUF557 assemblies by section
Every catalogued assembly group for the Caterpillar SUF557. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
143-4800 Air Cleaner Gp
| 10***50 | Film; (Air Cleaner) (Radial Seal) (On Air Cleaner Cover) | 1 |
| 14***00 | Air Cleaner Group | 1 |
| 6I***05 | Filter Element As-Air; -Primary | 1 |
156-2602 Air Cleaner Gp
| 14***00 | Air Cleaner Group | 1 |
| 15***02 | Air Cleaner Group | 1 |
| 5L***33 | Fitting (To Air Cleaner) | 1 |
198-9628 Elbow Gp-Exhaust
| 19***41 | Elbow As | 1 |
| 19***28 | Elbow Group-Exhaust | 1 |
| 4W***60 | Clamp-V Band; (V-Band)(Turbo Exhaust Flange) | 1 |
201-1849 Exhaust Gp
| 19***16 | Elbow As-Exhaust | 1 |
| 19***77 | Pipe As | 1 |
| 1B***13 | Bolt,Machine Governor And Decelerator Control | 1 |
162-1990 Lines Gp-Air -Aftercooler
| 10***25 | Gasket; (Air Inlet Manifold)(Intake Manifold Inlet) | 1 |
| 12***09 | Elbow; (Aftercooler, Outlet) | 1 |
| 12***29 | Clamp; (V-Band) | 1 |
213-3446 Lines Gp-Air
| 10***25 | Gasket; (Air Inlet Manifold)(Intake Manifold Inlet) | 1 |
| 12***29 | Clamp; (V-Band) | 1 |
| 16***03 | Tube-Inlet | 1 |
117-2688 Manifold Gp-Exhaust
| 10***13 | Gasket | 6 |
| 11***89 | Manifold-Exhaust; (Center) | 1 |
| 11***15 | Stud-Taperlock; (M10x85-mm Oal) | 12 |
116-5405 Manifold Gp-Inlet
| 11***05 | Manifold Group-Inlet | 1 |
| 11***06 | Manifold; (Inlet) | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
198-3187 Mounting Gp-Air Cleaner
| 15***14 | Precleaner Group; -Air Cleaner | 1 |
| 15***02 | Air Cleaner Group | 1 |
| 19***87 | Mounting Group-Air Cleaner | 1 |
2w-4071 Muffler
| 2W***71 | Muffler | 1 |
198-3186 Muffler Gp
| 19***86 | Muffler Group | 1 |
| 19***44 | Bracket As | 1 |
| 19***45 | Bracket As | 1 |
150-1714 Precleaner Gp -Air Cleaner
| 15***14 | Precleaner Group; -Air Cleaner | 1 |
| 2S***93 | Precleaner Cover Assembly | 1 |
| 2S***08 | Collector-Dust; (Air Precleaner) | 1 |
192-2079 Turbocharger Gp
| 19***79 | Turbocharger Group | 1 |
| 1S***95 | Gasket-Turbocharger To Manifold; Gasket Turbocharger To Manifold | 1 |
| 3E***17 | Locknut; (M10x1.5-Thd)(Spiralock) | 4 |
191-5108 Turbocharger Gp
| 11***87 | Bolt; (M6x0.04x10.4-mm)(6mm X 0.04 Thd) | 1 |
| 12***53 | Clamp As; (Turbine) | 1 |
| 16***58 | Clip-Hose | 1 |
Basic Engine
164-7564 Air Compressor Gp
| 0L***52 | Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex) | 6 |
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 12 |
| 10***16 | Key-Woodruff | 1 |
133-7032 Air Compressor Gp
| 00***43 | Elbow; (12.7mm Id) | 1 |
| 00***58 | Elbow-Flared | 1 |
| 03***31 | Elbow-To Tube As | 1 |
192-6482 Camshaft Gp
| 11***59 | Cover | 1 |
| 12***11 | Journal | 1 |
| 13***68 | Gasket; (Camshaft Cover) | 1 |
115-2985 Cover Gp-Cylinder Block
| 11***85 | Cover Group-Cylinder Block | 1 |
| 4P***87 | Cover | 1 |
| 6V***50 | Seal-O-Ring (Id=39.34mm) | 1 |
127-5728 Cover Gp-Flywheel Housing
| 0S***89 | Bolt, Hex. Hd., 5/8"-11 N.C. X 1 3/4" | 3 |
| 12***28 | Cover Group-Flywheel Housing; (Flywheel Housing) | 1 |
| 4D***04 | Washer,Flat Cover Mtg,Accessory Drive | 3 |
113-8987 Cover Gp-Front Housing
| 10***69 | Seal-O-Ring; (Fuel Transfer Pump) | 1 |
| 11***87 | Cover Group-Front Housing | 1 |
| 12***05 | Cover | 1 |
132-3212 Crankshaft Gp
| 12***82 | Bearing-Main; (0.51-mm Us)(.51mm U.S.) | 0 |
| 12***83 | Bearing-Main; (0.76-mm Us)(.76mm U.S.) | 0 |
| 12***84 | Bearing-Main; (0.51-mm Os)(.51mm O.S.) | 0 |
204-3449 Cylinder Block As
| 10***60 | Seal; (Liner) | 6 |
| 16***63 | Shim-Liner; -Cylinder | 0 |
| 16***64 | Shim-Liner; -Cylinder | 0 |
200-2054 Cylinder Block As
| 11***66 | Cap; (Bearing) | 7 |
| 17***54 | Bolt-Hex Head; (M16x160mm) | 14 |
| 20***54 | Cylinder Block As | 1 |
115-2983 Cylinder Block Gp
| 11***83 | Cylinder Block Group | 1 |
| 1N***99 | Plug-O-Ring; (Straight Thread) | 2 |
| 20***49 | Cylinder Block As | 1 |
179-9458 Cylinder Head As
| 11***02 | Sleeve; (Injector) | 6 |
| 17***53 | Insert-Valve Seat; (Exhaust)(Standard) | 12 |
| 17***54 | Seat-Valve; (Intake) | 12 |
179-9461 Cylinder Head As
| 10***50 | Guide-Valve; (Standard) | 24 |
| 17***58 | Cylinder Head As | 1 |
| 17***61 | Cylinder Head As | 1 |
132-3208 Cylinder Head Gp
| 13***08 | Cylinder Head Group | 1 |
| 14***44 | Cylinder Head Group | 1 |
| 18***07 | Gasket As-Cylinder Head | 1 |
148-2144 Cylinder Head Gp
| 10***50 | Guide-Valve; (Standard) | 24 |
| 10***34 | Guide-Valve; (0.127-mm Os Od) | 0 |
| 10***35 | Guide-Valve; (0.508-mm Os Od) | 0 |
117-2766 Damper Gp
| 11***66 | Damper Group | 1 |
| 13***83 | Bolt-12 Point Head; (M10x1.5x30-mm) | 8 |
| 16***25 | Damper Assem. | 1 |
128-3415 Drive Gp-Fan
| 12***15 | Drive Group-Fan | 1 |
| 12***16 | Bracket As-Fan | 1 |
| 12***17 | Shaft-Fan | 1 |
116-1083 Fastener Gp-Cylinder Head
| 11***83 | Fastener Group-Cylinder Head; (Cylinder Head) | 1 |
| 12***84 | Bolt; (Hex Head) (M16x2x160mm) | 26 |
| 2S***58 | Washer-Hard; (17x29x3-mm Thk)(Engine Brake) | 26 |
180-5168 Fastener Gp-Damper & Pulley
| 18***68 | Fastener Group-Damper & Pulley | 1 |
| 5P***47 | Washer (Bracket To Valve Support) | 6 |
| 8T***81 | Bolt; (M16x2.0x80mm) | 6 |
117-2771 Fastener Gp-Damper & Pulley
| 11***71 | Fastener Group-Damper & Pulley | 1 |
| 21***85 | Spacer; (10.5-mm Thk) | 1 |
| 8T***81 | Bolt; (M16x2.0x80mm) | 6 |
155-4313 Fastener Gp-Flywheel
| 10***69 | Bolt-Self-Locking; (M16x2x60-mm) | 8 |
| 15***13 | Fastener Group-Flywheel | 1 |
| 5P***47 | Washer (Bracket To Valve Support) | 8 |
155-6615 Flywheel Gp
| 10***12 | Flywheel As | 1 |
| 15***15 | Flywheel Group | 1 |
| 4N***14 | Gear; (113-Teeth)(Flywheel Starter) | 1 |
117-2750 Gear Gp-Front
| 11***50 | Gear Group-Front | 1 |
| 13***83 | Shaft | 1 |
| 13***86 | Gear As; (Idler) (71 Teeth) | 1 |
201-2054 Guard Gp-Belt
| 19***70 | Bracket | 1 |
| 19***71 | Bracket | 1 |
| 19***72 | Bracket As | 1 |
156-2601 Housing Gp-Flywheel
| 06***55 | Seal-O-Ring (Id=47.22mm) | 1 |
| 12***41 | Housing-Flywheel | 1 |
| 15***01 | Housing Group-Flywheel | 1 |
133-7075 Housing Gp-Front
| 11***24 | Gear; (Pump Drive) (34 Teeth) | 1 |
| 13***75 | Housing Group-Front | 1 |
| 16***66 | Seal Group-Crankshaft; (Front) | 1 |
148-2063 Lifter Gp-Valve -Mechanism
| 0L***26 | Plug -13mm(.512 In.) Outside Dia. | 2 |
| 12***93 | Dowel | 1 |
| 14***63 | Lifter Group-Valve; -Mechanism | 1 |
117-2748 Lifting Gp-Engine
| 11***05 | Plate; (Lifting Eye) | 2 |
| 11***48 | Lifting Group-Engine | 1 |
| 5P***45 | Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate) | 6 |
137-4982 Mounting Gp-Alternator
| 11***19 | Bracket | 1 |
| 13***42 | Bracket | 1 |
| 13***81 | Bracket | 1 |
198-9597 Mounting Gp-Engine
| 15***41 | Isolator | 2 |
| 15***42 | Washer; (17x71x5-mm Thk) | 2 |
| 15***43 | Isolator | 2 |
138-2551 Mounting Gp-Fan Drive
| 13***50 | Stud | 2 |
| 13***51 | Mounting Group-Fan Drive | 1 |
| 5R***37 | Washer; (Seal) (1.27mm Thk) | 2 |
165-0691 Mounting Gp-Fan Drive
| 16***88 | Plate | 1 |
| 16***91 | Mounting Group-Fan Drive | 1 |
| 5P***45 | Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate) | 4 |
116-5408 Mounting Gp-Valve Mechanism
| 11***83 | Fastener Group-Cylinder Head; (Cylinder Head) | 1 |
| 11***08 | Mounting Group-Valve Mechanism | 1 |
| 17***68 | Bridge As-Valve; (Intake) | 12 |
117-2777 Pan Gp-Oil -Engine
| 06***58 | Seal-O-Ring; (Oil Pan Drain Plug) | 2 |
| 10***08 | Gasket; (Oil Pan) | 1 |
| 11***77 | Pan Group-Oil; -Engine | 1 |
117-2697 Panel Gp-Sound Suppression -Engine Oil Pan
| 11***97 | Panel Group-Sound Suppression; -Engine Oil Pan | 1 |
| 13***44 | Panel As-Sound Suppression | 1 |
| 7T***65 | Spacer | 6 |
130-0863 Piston & Rod Gp
| 11***99 | Plug-Pin | 2 |
| 11***16 | Rod Assem. | 1 |
| 11***72 | Bearing-Connecting Rod | 1 |
117-0185 Plug Gp-Cylinder Block
| 11***85 | Plug Group-Cylinder Block; (Cylinder Block) | 1 |
| 6V***89 | Seal-O-Ring (Id=19.18mm) | 1 |
| 9S***06 | Plug (Front 5 Stem Main Control Valve) | 1 |
138-2028 Plug Gp-Cylinder Block
| 13***28 | Plug Group-Cylinder Block | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
| 6V***48 | Seal--O-Ring--To Governor Drive Housing | 1 |
117-0165 Plug Gp-Cylinder Block -Oil Gallery, End
| 11***65 | Plug Group-Cylinder Block; -Oil Gallery, End | 1 |
| 3B***23 | Core Plug--Flywheel Housing Pinion Shaft Hole | 1 |
115-2984 Plug Gp-Cylinder Block
| 11***84 | Plug Group-Cylinder Block; (Cylinder Block) | 1 |
| 6V***49 | Seal-O-Ring (Id=11.89mm); (11.89-mm Id) | 3 |
| 9S***91 | Plug,Machine Thread Fuel Injection Pump | 3 |
130-5481 Pulley Gp-Fan Drive
| 13***81 | Pin, Pin; Dowel, Pulley Group | 1 |
| 7E***82 | Pulley-Fan Drive; (3-Groove) | 1 |
| 8T***96 | Washer-Hard- Line From Pipe As. To Gear | 6 |
138-2579 Pulley Gp-Crankshaft
| 13***95 | Pulley-Crankshaft | 1 |
| 13***79 | Pulley Group-Crankshaft | 1 |
2w-8494 Pulley-Alternator
| 2W***94 | Pulley-Alternator | 1 |
115-9397 Rocker Arm Gp
| 09***14 | Pin; (Spring) | 1 |
| 11***97 | Rocker Arm Group | 1 |
| 11***98 | Arm; (Valve Rocker) (Exhaust) | 2 |
116-1091 Seal Gp-Crankshaft
| 10***80 | Seal-O-Ring (Id=177.17mm) | 1 |
| 11***91 | Seal Group-Crankshaft; -Single Lip | 1 |
| 16***23 | Cover | 1 |
115-3004 Support Gp-Engine
| 11***04 | Support Group-Engine | 1 |
| 17***21 | Support-Front | 1 |
| 5P***45 | Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate) | 8 |
7m-4710 V-Belt Set -2 Belts
| 7M***10 | V-Belt Set | 1 |
117-2749 Valve Mechanism Gp -Engine
| 10***42 | Base-Valve Mechanism Cover | 1 |
| 10***67 | Pushrod; (Valve) | 12 |
| 10***68 | Pushrod-Injector | 6 |
Cooling System
131-7701 Adapter Gp-Fan
| 13***16 | Adapter-Fan | 1 |
| 13***01 | Adapter Group-Fan | 1 |
| 9F***46 | Seal-Adapter To Hub To Bearing | 1 |
117-2788 Coolant Conditioner Gp
| 00***64 | End; (Hose) | 2 |
| 00***90 | Elbow | 1 |
| 11***88 | Coolant Conditioner Group | 1 |
115-2990 Cooler Gp-Engine Oil
| 06***40 | Seal-O-Ring (Id=37.69mm) | 2 |
| 10***25 | Gasket | 1 |
| 11***90 | Cooler Group-Engine Oil; (Engine Oil) | 1 |
4n-3094 Fan Gp-Suction
| 4N***92 | Spider As; (8-Blade) | 1 |
| 4N***94 | Fan Group-Suction | 1 |
| 5P***66 | Capscrew; (Hex Hd) (1/2-13 Nc X 1 1/2) (Gd 8 Z) | 6 |
117-2792 Fastener Gp-Oil Cooler -Engine
| 11***92 | Fastener Group-Oil Cooler; -Engine | 1 |
| 6V***17 | Bolt; (M8x1.25x30-mm)(Location Z) | 1 |
| 9M***74 | Washer-Hard; (8.8x16x2-mm Thk)(Hard) | 1 |
123-0794 Filter As-Coolant Conditioner
| 12***94 | Filter As-Coolant Conditioner | 1 |
| 9N***17 | Filter-Coolant Conditioner; (9-12 Gal Capacity)(Maintenance) | 1 |
| 9N***18 | Filter-Coolant Conditioner | 1 |
198-9601 Guard Gp-Fan
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 18 |
| 12***24 | Guard As-Fan | 2 |
| 19***01 | Guard Group-Fan | 1 |
204-5269 Guard Gp-Radiator
| 20***46 | Guard | 1 |
| 20***61 | Guard | 1 |
| 20***69 | Guard Group-Radiator | 1 |
116-5456 Housing & Regulator Gp -Engine Coolant Temperature
| 11***56 | Housing & Regulator Group; -Engine Coolant Temperature | 1 |
| 11***00 | Housing As-Regulator | 1 |
| 12***11 | Stud; (M8x1.25-Thd)(M8x1.25 Thd Both Ends) | 4 |
198-3183 Lines Gp-Water
| 06***72 | Hose; (Lower Radiator) | 1 |
| 10***51 | Hose | 1 |
| 13***50 | Tube | 1 |
116-5460 Lines Gp-Water -Bypass
| 10***08 | Flange | 1 |
| 10***95 | Tube | 1 |
| 11***60 | Lines Group-Water; -Bypass | 1 |
117-2778 Lines Gp-Water -Water Pump Inlet Elbow
| 10***35 | Gasket | 1 |
| 10***85 | Elbow; (Water Pump) | 1 |
| 11***78 | Lines Group-Water; -Water Pump Inlet Elbow | 1 |
117-2783 Lines Gp-Water -Single Thermostat
| 11***56 | Housing & Regulator Group; -Engine Coolant Temperature | 1 |
| 11***83 | Lines Group-Water; -Single Thermostat | 1 |
| 11***97 | Gasket | 4 |
176-7000 Pump Gp-Water
| 10***10 | Gasket | 1 |
| 14***88 | Seal As; (Water Pump) | 1 |
| 17***95 | Cover-Pump | 1 |
117-2674 Pump Gp-Water
| 11***74 | Pump Group-Water | 1 |
| 17***00 | Pump Group-Water | 1 |
| 6V***21 | Bolt; (M8x1.25x80-mm) | 2 |
134-7294 Radiator Gp
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 9 |
| 0S***90 | Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As) | 4 |
| 12***11 | Aftercooler As | 1 |
201-2056 Support Gp-Radiator
| 03***55 | Locknut; (5/16-18-Thd)(Marked X) | 4 |
| 15***56 | Strut As | 1 |
| 15***33 | Bracket As | 2 |
201-2047 Tank Gp-Expansion
| 12***26 | Tank As-Expansion | 1 |
| 20***47 | Tank Group-Expansion | 1 |
| 6L***17 | Cap-Radiator; (7-Psi)(Coolant Tank) | 1 |
201-2063 Tank Gp-Expansion
| 00***01 | Elbow (To Serial No 1md225) | 2 |
| 15***86 | Insert-Nut | 4 |
| 17***75 | Support | 1 |
Electrical And Starting System
121-4134 Alternator Gp-Charging
| 03***12 | Screw-Forming; (10-24x0.5-In) | 3 |
| 12***34 | Alternator Group-Charging | 1 |
| 13***24 | Frame As-Alternator | 1 |
124-2674 Connection Gp-Electrical
| 12***74 | Connection Group-Electrical; -Ground | 1 |
| 5C***61 | Nut (M8x1.25 Thd); (M8x1.25 Thd) | 1 |
| 6V***64 | Washer-Hard; (8.8x25.5x5-mm Thk) | 1 |
189-4670 Control & Mtg Gp-Engine Elek
| 12***11 | Spacer; (3x15x17-mm Thk) | 1 |
| 16***94 | Spacer; (8.5x12.7x54.1-mm) | 2 |
| 18***70 | Control & Mtg Group-Engine Elek | 1 |
240-5304 Control Gp-Engine Electronic
| 24***04 | Control Group-Engine Electronic | 1 |
322-3603 Control Gp-Engine Electronic
| 0S***87 | Bolt-Bracket Assembly To Timing Gear | 1 |
| 11***35 | Guard-Alternator | 1 |
| 1F***58 | Nut-Full; (1/2-13-Thd)(Air Lines) | 1 |
210-0848 Control Gp-Engine Electronic
| 18***72 | Screw-Pan Head; (No 8-32x9.52-mm)(Wax Coated) | 1 |
| 21***48 | Control Group-Engine Electronic | 1 |
| 7X***15 | Strap; (Grounding) | 1 |
210-0849 Control Gp-Engine Electronic
| 18***72 | Screw-Pan Head; (No 8-32x9.52-mm)(Wax Coated) | 1 |
| 21***49 | Control Group-Engine Electronic | 1 |
| 7X***15 | Strap; (Grounding) | 1 |
127-8853 Converter Gp-Electrical
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 12***74 | Cover-Connector; (Wire Router) | 1 |
| 12***53 | Converter Group-Electrical | 1 |
156-0181 Guard Gp-Alternator
| 15***81 | Guard Group-Alternator | 1 |
226-5758 Harness As-Engine -Electronic Control Module
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
| 22***58 | Harness As-Engine; -Electronic Control Module | 1 |
210-4309 Module Gp-Interface
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
| 21***09 | Module Group-Interface; -Interface Module | 1 |
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 |
| 3E***71 | Wedge; (Receptacle Lock) (3 Pin) | 1 |
239-9957 Sensor Gp-Liquid Level
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***40 | Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga) | 3 |
| 23***57 | Sensor Group-Liquid Level; -Coolant Loss | 1 |
161-9932 Sensor Gp-Pressure
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 16***32 | Sensor Group-Pressure; -Transmission Oil | 1 |
| 19***26 | Harness As-Sensor; (16-18 Ga Wire)(Engine Oil Temperature) | 3 |
194-6724 Sensor Gp-Pressure
| 16***03 | Sensor Group-Pressure; (Turbocharger Inlet, Rh) | 1 |
| 19***24 | Sensor Group-Pressure; -Air Inlet Manifold | 1 |
| 21***68 | Seal-O-Ring; (11.89-mm Id) | 1 |
194-6725 Sensor Gp-Pressure
| 16***05 | Sensor As-Pressure; (Unfiltered Engine Oil) | 1 |
| 19***25 | Sensor Group-Pressure; -Engine Oil | 1 |
| 6V***48 | Seal--O-Ring--To Governor Drive Housing | 1 |
194-6722 Sensor Gp-Pressure
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***40 | Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga) | 3 |
| 19***22 | Sensor Group-Pressure; -Atmospheric Air | 1 |
210-1747 Sensor Gp-Pressure
| 18***11 | Sensor Group-Speed; (Crankshaft Timing) | 1 |
| 20***40 | Seal-O-Ring; (13.94mm Id) | 1 |
| 21***47 | Sensor Group-Pressure; -Air Inlet Manifold | 1 |
197-8393 Sensor Gp-Pressure
| 16***04 | Sensor Group-Pressure; (Turbocharger Outlet) | 1 |
| 19***93 | Sensor Group-Pressure; -Atmospheric | 1 |
| 6V***48 | Seal--O-Ring--To Governor Drive Housing | 1 |
197-8394 Sensor Gp-Pressure
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 2 |
| 17***49 | Strap; (Marker) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 2 |
197-8397 Sensor Gp-Speed
| 13***11 | Sensor Group-Temperature; (Transmission Lubrication Oil) | 1 |
| 13***45 | Pad; (Connector) | 1 |
| 19***97 | Sensor Group-Speed; -Timing, Camshaft | 1 |
4p-5820 Sensor Gp-Speed
| 18***01 | Sensor Group-Speed; (Camshaft Timing) | 1 |
| 20***40 | Seal-O-Ring; (13.94mm Id) | 1 |
| 4P***20 | Sensor Group-Speed; (Eng Speed Pick-Up) | 1 |
197-8396 Sensor Gp-Speed
| 11***50 | Sleeve (31cm); (31-cm) | 0 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
| 19***96 | Sensor Group-Speed; -Timing, Crankshaft | 1 |
197-8392 Sensor Gp-Temperature
| 03***23 | Bolt; (1/4-28x1-In) | 5 |
| 19***92 | Sensor Group-Temperature; -Coolant, Water | 1 |
| 20***89 | Kit-Solenoid; (12-Volt)(Starting Motor) | 1 |
197-8391 Sensor Gp-Temperature
| 13***11 | Sensor Group-Temperature; (Transmission Lubrication Oil) | 1 |
| 13***45 | Pad; (Connector) | 0 |
| 19***91 | Sensor Group-Temperature; -Air Inlet Manifold | 1 |
131-0427 Sensor Gp-Temperature
| 13***27 | Sensor Group-Temperature; -Engine Coolant | 1 |
| 13***45 | Pad; (Connector) | 1 |
| 26***97 | Sensor Group-Temperature; (Air Inlet Manifold) | 1 |
207-1524 Starting Motor Gp-Electric
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 4 |
| 11***85 | Seal-O-Ring; (13.94mm Id) | 2 |
9y-7129 Starting Motor Gp-Electric
| 03***23 | Bolt; (1/4-28x1-In) | 5 |
| 20***89 | Kit-Solenoid; (12-Volt)(Starting Motor) | 1 |
| 3E***75 | Housing Assem. | 1 |
207-1537 Starting Motor Gp-Electric
| 16***09 | Elbow | 1 |
| 19***25 | Sensor Group-Pressure; -Engine Oil | 1 |
| 19***91 | Sensor Group-Temperature; -Air Inlet Manifold | 2 |
189-6593 Wiring Gp-Electronic Control
| 10***38 | End-Wire; (16-Ga) | 20 |
| 15***56 | Wire; (2-Conductor, 14-Ga)(2286-cm) | 0 |
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
189-6595 Wiring Gp-Electronic Control
| 18***95 | Wiring Group-Electronic Control | 1 |
| 2V***16 | Clip; (9.52mm Id) | 4 |
| 4P***37 | Harness Assembly-Wiring; (Unit Injector) | 1 |
208-2365 Wiring Gp-Machine
| 15***63 | Wedge-Plug Lock; (6-Pin) | 1 |
| 15***74 | Kit-Connecting Plug; (6-Pin)(Cat Electronic Display Harness) | 1 |
| 18***36 | Socket-Connector; (16-Ga To 18-Ga) | 4 |
117-2760 Wiring Gp-Unit Injector
| 11***60 | Wiring Group-Unit Injector | 1 |
| 4B***43 | Nut,Plain,Hexagon Plate Mtg | 2 |
| 6V***07 | Seal-Rectangular | 1 |
Enclosures, Guards And Bases
197-9243 Base As
| 03***55 | Locknut; (5/16-18-Thd)(Marked X) | 2 |
| 19***52 | Bracket As | 1 |
| 19***43 | Base As | 1 |
Engine Arrangement
208-1616 Engine Ar
| 11***87 | Cover Group-Front Housing | 1 |
| 11***83 | Cylinder Block Group | 1 |
| 11***84 | Plug Group-Cylinder Block; (Cylinder Block) | 1 |
208-1618 General Ar
| 11***53 | Filter Group-Engine Oil | 1 |
| 16***90 | Lines Group-Air; -Aftercooler | 1 |
| 16***34 | Sensor Group-Coolant Level; (Water, Coolant)(Scac Expansion Tank) | 1 |
Fuel System
178-0165 Filter Gp-Fuel
| 03***72 | Elbow; (Flared 90 Degree) | 1 |
| 13***71 | Filter Group-Water Sep & Fuel; -Primary | 1 |
| 13***36 | Cap As | 1 |
116-5413 Filter Gp-Secondary Fuel
| 11***13 | Filter Group-Secondary Fuel | 1 |
| 1R***49 | Filter-Fuel; (Advanced Efficiency)(Secondary) | 1 |
133-5671 Filter Gp-Water Sep & Fuel
| 12***75 | Bowl As-Water Collection; (Water Separator, Fuel Filter) | 1 |
| 13***71 | Filter Group-Water Sep & Fuel; -Primary | 1 |
| 13***73 | Element; (Filter) (Fuel/Water Separator) (Primary) | 1 |
117-0184 Fitting Gp-Fuel Lines
| 11***84 | Fitting Group-Fuel Return; (Return)(Return) | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
| 7X***02 | Connector; (Fuel Pump Inlet) | 1 |
212-3468 Injector Gp-Fuel
| 11***84 | Seal-O-Ring; (32.99mm Id) | 1 |
| 21***68 | Injector Group-Fuel | 1 |
| 21***98 | Seal-O-Ring; (34.56mm Id) | 1 |
189-4674 Lines Gp-Fuel Injection
| 03***47 | Elbow-Filtered Fuel From Based Assembly | 1 |
| 11***16 | Hose Assem. | 1 |
| 11***18 | Hose As | 1 |
123-0782 Plug Gp-Fuel Lines
| 12***82 | Plug Group-Fuel Lines | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
| 9S***04 | Plug-O-Ring; (Straight Thread O-Ring) | 1 |
116-5428 Pump & Mtg Gp-Fuel Transfer
| 09***70 | Washer-Sealing | 2 |
| 11***28 | Pump & Mtg Group-Fuel Transfer; (Fuel Transfer) | 1 |
| 19***82 | Tube As | 1 |
192-2070 Pump Gp-Fuel Injection
| 15***01 | Bolt; (8x1.25x7-mm)(M8x1.25x70mm) | 1 |
| 19***70 | Pump Group-Fuel Injection | 1 |
| 21***68 | Injector Group-Fuel | 1 |
116-5411 Pump Gp-Fuel Priming -Hand
| 11***11 | Pump Group-Fuel Priming; -Hand | 1 |
| 13***41 | Pump Group-Fuel Priming; (Hand) | 1 |
| 1P***36 | Gasket; (Fuel Priming Pump)(Fuel Priming Pump) | 1 |
281-2725 Valve Gp-Check -Fuel
| 03***33 | Seal-O-Ring; (12.42mm Id) | 1 |
| 28***25 | Valve Group-Check; -Fuel | 1 |
| 6V***23 | Ring; (Backup) (13.16mm Id) | 1 |
233-6742 Valve Gp-Check -Fuel
| 23***42 | Valve Group-Check; -Fuel Filter | 1 |
| 23***96 | Valve Group-Check; -Fuel Filter | 1 |
| 6V***89 | Seal-O-Ring (Id=19.18mm) | 1 |
238-0296 Valve Gp-Check -Fuel
| 03***33 | Seal-O-Ring; (12.42mm Id) | 1 |
| 23***96 | Valve Group-Check; -Fuel Filter | 1 |
| 6V***23 | Ring; (Backup) (13.16mm Id) | 1 |
Lubrication System
166-1329 Base Gp-Oil Filter -Engine
| 11***45 | Valve-Pump Bypass; (Engine Oil Filter) | 1 |
| 16***28 | Base Assem. | 1 |
| 16***29 | Base Group-Oil Filter; -Engine | 1 |
117-2786 Cover Gp-Oil Filter Base -Engine
| 11***86 | Cover Group-Oil Filter Base; -Engine | 1 |
| 5S***34 | Seal-O-Ring; (97.79mm Id) | 1 |
| 7C***42 | Cover; (Filter Base) | 1 |
124-2642 Filler Gp-Engine Oil
| 06***55 | Seal-O-Ring (Id=47.22mm) | 3 |
| 12***42 | Filler Group-Engine Oil | 1 |
| 5L***52 | Cap Assembly, Including:-; (Engine) | 1 |
116-1853 Filter Gp-Engine Oil
| 03***51 | Elbow )-Inlet Port To Valve Group | 4 |
| 10***28 | Cover | 1 |
| 10***29 | Name-Plate (Lubrication), Adapter | 1 |
117-2751 Filter Gp-Engine Oil
| 11***51 | Filter Group-Engine Oil | 1 |
| 13***45 | Bolt-Hex Head; (M10x1.50x30) | 6 |
| 16***29 | Base Group-Oil Filter; -Engine | 1 |
124-2657 Gauge Gp-Oil Level (Dipstick) -Engine
| 12***57 | Gauge Group-Oil Level (Dipstick); -Engine | 1 |
| 13***32 | Tube As | 1 |
| 13***33 | Gauge As-Oil Level (Dipstick); (Engine) | 1 |
115-9377 Lines Gp-Turbocharger Oil
| 03***33 | Seal-O-Ring; (12.42mm Id) | 1 |
| 11***87 | Seal-O-Ring (23.16 mm Id) | 1 |
| 11***77 | Lines Group-Turbocharger Oil | 1 |
117-2746 Pump Gp-Engine Oil
| 06***61 | Seal-O-Ring (Id=40.87mm) | 1 |
| 11***03 | Tube Assem. | 1 |
| 11***46 | Pump Group-Engine Oil | 1 |
233-5220 Pump Gp-Engine Oil
| 23***20 | Pump Group-Engine Oil | 1 |
| 6D***46 | Seal-O-Ring (Id=101.27mm) | 1 |
| 6V***17 | Bolt; (M8x1.25x30-mm)(Location Z) | 4 |
Operator Station
275-2106 Gauge Gp-Gear Oil Pressure -Transmission
| 07***00 | Switch As-Toggle; (Starter Engine Battery Charger) | 1 |
| 11***14 | End-Wire; (18-Ga) | 25 |
| 11***97 | End-Wire; (14-Ga) | 4 |
207-2826 Gauge Gp-Gear Oil Pressure -Transmission
| 03***46 | Elbow, 90 Deg Adj., 1/4in. J.I.C. X 7/16in.-14 Str. Thd. | 1 |
| 03***16 | Elbow; (Pipe) | 1 |
| 10***87 | Voltmeter Group; (12-Volt) | 1 |
198-9667 Mounting Gp-Control
| 19***67 | Mounting Group-Control | 1 |
| 3L***87 | Lockwasher 7.24mm(.285in.)O.D.; (3.7x7.24x.48mm Thk) | 2 |
| 4B***43 | Nut,Plain,Hexagon Plate Mtg | 2 |
245-2159 Mounting Gp-Control
| 24***59 | Mounting Group-Control | 1 |
210-9057 Panel Gp-Control
| 11***52 | Plate & Film Group; -Engine Information | 1 |
| 11***36 | Film-Information; (3176-Ind Maint) | 1 |
| 21***57 | Panel Group-Control | 1 |
161-9110 Panel Gp-Instrument
| 03***55 | Locknut; (5/16-18-Thd)(Marked X) | 4 |
| 15***86 | Insert-Nut | 5 |
| 16***10 | Panel Group-Instrument | 1 |
208-2359 Panel Gp-Instrument
| 13***94 | Radiator Group | 1 |
| 15***41 | Isolator | 4 |
| 15***42 | Washer; (17x71x5-mm Thk) | 4 |
104-5687 Voltmeter Gp
| 10***87 | Voltmeter Group; (12-Volt) | 1 |
Prime Package
201-2055 Mounting Gp-Filter
| 03***46 | Elbow, 90 Deg Adj., 1/4in. J.I.C. X 7/16in.-14 Str. Thd. | 1 |
| 03***16 | Elbow; (Pipe) | 1 |
| 03***55 | Locknut; (5/16-18-Thd)(Marked X) | 2 |
201-2066 Mounting Gp-Hyd Oil Cooler
| 12***53 | Converter Group-Electrical | 1 |
| 13***27 | Sensor Group-Temperature; -Engine Coolant | 1 |
| 13***45 | Module Group-Quad Gauge | 1 |
198-9600 Radiator & Mounting Gp
| 00***47 | Elbow; (Rh Side) | 1 |
| 03***46 | Elbow, 90 Deg Adj., 1/4in. J.I.C. X 7/16in.-14 Str. Thd. | 1 |
| 03***16 | Elbow; (Pipe) | 1 |
Service Equipment And Supplies
6l-4502 Chart-Plate & Film
| 6L***02 | Chart-Plate & Film | 1 |
SUF557 serial number reference
On a skid-mounted pumper package like the SUF557, the PIN/serial plate sits on the skid frame rail or on the engine mounting bracket near the flywheel housing rather than on a cab or hood, since there is no operator station. Read the first three characters as the serial prefix (identifies the specific engine/package build), and the digits that follow as the sequential unit number within that prefix.
| Prefix | Identifies | Notes |
|---|---|---|
| LTF | SUF557 Pumper (Skid Mounted Power Pack), C-12 engine | S/N LTF1-UP (LTF00001-UP) per the radiator and mounting group section of the SUF557 Pumper parts manual. Cross-referenced camshaft and fuel injector listings tie the SUF557 skid-mounted power pack to the C-12 engine, alongside its sibling SBF214 skid-mounted pumper package (CSB prefix, separate range - do not mix). No second or later prefix found after repeated checks. Confirm with your dealer before ordering against a serial outside this range. |
Frequently asked questions
What engine powers the Caterpillar SUF557?
The SUF557 arrangement is built around the Caterpillar C-12 industrial diesel engine, an inline-six, turbocharged-aftercooled unit of roughly 11.9 to 12.0 L (728 in3) displacement with electronic unit injection. It is not a separate mobile-machine engine.
What is the operating weight of the SUF557?
No standardized operating weight is published for the SUF557. It is a skid-mounted Pumper power package, and total weight depends on the skid frame, pump end, and enclosure supplied by the equipment packager - verify with your dealer or the specific unit's build sheet.
What replaced the Caterpillar SUF557?
No documented direct successor exists for this specific arrangement code. The underlying C-12 industrial engine platform was succeeded in later Caterpillar lineups by C13 and C15 industrial/pump engines, though this is not confirmed as a direct SUF557 replacement - confirm with a Cat dealer for your serial range.
What SUF557 owners discuss
What engine actually powers a Cat unit tagged with the SUF557 serial prefix, and does that affect parts shopping?
SUF557 is an engine serial-number prefix, not a distinct engine design. It identifies a C-12 inline-six diesel built into a skid-mounted industrial power package - the type used to drive a pump or other stationary load - rather than a mobile machine. The C-12 family spans truck, marine, and industrial builds under several different serial prefixes, so match the full serial (prefix plus arrangement number) on the rating plate before ordering parts. A component that fits a highway-truck C-12 does not always fit the SUF557 industrial arrangement.
What are the core specs for the engine behind SUF557 - displacement, layout, control system?
The SUF557-tagged package is built around Caterpillar's C-12: an 11.9 L (726 cu in) turbocharged, air-to-air aftercooled inline-six with electronic unit injection under ADEM control. Bore and stroke run around 130 mm x 150 mm (5.1 in x 5.9 in). Power and torque ratings vary a lot by application and duty cycle - highway-truck versions of the C-12 are commonly rated from roughly 240 to 380 kW (320 to 505 hp), while industrial and power-pack ratings for continuous duty typically sit well below the top truck numbers. Read the rating plate on the actual unit rather than assume a truck figure applies.
Owners report power loss and assume the turbo is dying - what do mechanics say to check first?
Community troubleshooting on this engine family agrees that boost and power complaints get blamed on the turbo far more often than the turbo is the actual cause. A leaking charge-air cooler (aftercooler) or a split or loose intake boot bleeds off boost and mimics turbo wear almost exactly. Units with an electronic wastegate solenoid can also show erratic or low boost purely from a sticking or failed solenoid. The recommended first step is a pressure and leak-down test of the whole air-charge path before pulling the turbo.
What's the most talked-about mechanical weak point on this engine family?
The cylinder head is relatively thin and prone to warp under heat cycling, and head gasket failure is one of the most frequently reported issues on the C-10/C-12 family this engine belongs to - it shows up as coolant in the oil, oil in the coolant, or overheating. Coolant can also enter the oil through a bad cylinder liner o-ring rather than the head gasket itself, so a contamination complaint needs both checked. A revised head-bolt torque procedure exists specifically to cut down repeat head-gasket failures on this engine family. Because a leaking head gasket can be mistaken for a simple low-coolant condition, have your dealer verify the source of contamination before running the engine under load again.
What electrical gremlins come up most often around this engine's fuel system?
Injector circuit fault codes (open or short conditions logged against individual cylinders) are a recurring complaint, and the root cause is very often the injector wiring harness chafing against brackets or the vibration damper rather than a bad injector itself. Operators report the harness shorting or breaking again shortly after a repair if routing and clearance weren't corrected at the same time. No-start or intermittent-stall complaints traced through the ECM are frequently caused by corroded connectors or a weak ground rather than the control module itself. Because a chafed injector harness can trigger an unexpected misfire or shutdown, have your dealer verify harness routing and ground integrity before replacing the ECM.
For a skid-mounted power-pack build like this, what wear pattern shows up around the drive coupling?
These packages run a torsional coupling or vibration damper between the engine flywheel and the driven pump or load. Field reports tie premature coupling wear or failure to torsional vibration that isn't fully damped, especially when the duty cycle or load match wasn't set correctly at commissioning. Watch the damper and coupling elements for cracking, oil contamination on rubber elements, or backlash, and check alignment and torsional match to the driven load before assuming a worn coupling is simply a bad part.
What should a buyer check before taking on a used SUF557-tagged power pack?
Pull the full engine serial (prefix plus arrangement number) off the rating plate and match it to the actual application, since the C-12 family covers truck, marine, and industrial builds with different ratings. Ask for oil-analysis history rather than a single sample - a trend of stable wear metals is worth more than one clean report. Run the engine under load and watch for smoke, blow-by, and how well it holds coolant and oil temperature. Inspect the injector harness routing for chafe points and check the output coupling or damper for cracking or play. If the package carries more than one prefix on its tags, confirm whether they describe the same skid or a related but different build. Have your dealer verify the rating-plate data and run a full diagnostic scan before purchase.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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