Caterpillar G3512E
Caterpillarengine - generator setgenerator set

Caterpillar G3512E

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar G3512E is a natural gas generator set built on the 3500 series platform, featuring a V-12, 4-stroke-cycle, spark-ignited engine with a 50.5-liter displacement. Production spanned the early 2000s through the 2010s, succeeding the mechanical G3512 and preceding the electronically upgraded G3512E-1000 variants. The unit delivers 525 kW to 1,250 kW depending on the rating, operating at 1,500 rpm for 50 Hz or 1,800 rpm for 60 Hz applications. Configurations include continuous, prime, and standby power ratings, with options for dry or wet exhaust systems and various emission packages such as TA Luft compliance. The generator set integrates a Caterpillar SR4B generator end and an EMCP 2+ control panel for monitoring and protection.

The G3512E marked a transition from mechanical fuel control to the ADEM4 electronic management system, allowing precise air/fuel ratio control and improved emissions performance. This electronic integration made the engine adaptable to low-Btu landfill gas and biogas applications with hardened components. In the used market, the G3512E remains a high-demand asset due to its robust diesel-block design and widespread deployment in oilfield and remote power generation. Its continued relevance stems from the availability of aftermarket support and the engine's ability to handle dirty gas fuels without significant performance loss, making it a staple for rental fleets and industrial backup power.

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 G3512E specifications

Engine

ModelG3512E (V-12, 4-stroke-cycle spark-ignited natural-gas engine)
Gross/Net Power750 ekW (Gas Standby Rating @ 0.8 pf); 525 kW–1,000 ekW across ratings/variants
Displacement52 L (3,173 in³)
Cylinders12 (V-12)
Bore170 mm (6.7 in)
Stroke190 mm (7.5 in)
Emissions TierU.S. EPA Certified for Non-Emergency Stationary Genset; TA Luft and 1/2 TA Luft Emission Levels
Governor TypeADEM A4
AspirationTA (Turbocharged)
Compression Ratio9.7
RPM1,800 rpm (60 Hz); 1,500 rpm (50 Hz)

Weights

Operating/Shipping Weight12,500 kg (27,500 lb)

Dimensions

Length5,224 mm (205.7 in)
Width2,286 mm (90 in)
Height2,525 mm (99.4 in)

Performance

Load AcceptanceAccepts 100% block load in one step; complies with NFPA 110, Type 10
Transient ResponseMeets Class G2 ISO 8528-5 for a 30% load step
Cooling System CapacityOperates in standard ambient temperatures up to 43°C (110°F); designed for 45°C (113°F) ambient with 0.5 in. water air flow restriction without derate

Service capacities (summary)

Cooling System75.8 gal total (41.5 gal engine block; 34.3 gal radiator)
Engine Oil81 gal (oil sump capacity)
Fuel TypeNatural Gas, Hydrogen Blend (up to 5%); Pipeline Natural Gas: the OEM part reference BTU/scf and 70-100 Methane Number
Lubricant RecommendationCat DEO Diesel Engine Oil (SAE 15W-40, SAE 10W-30); Cat DEO-ULS (ECF-3 / API CJ-4)

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

Caterpillar G3512E maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level.
  • Check coolant level.
  • Check fuel level and drain water separator.
  • Check air filter restriction indicator.
  • Inspect for fluid leaks.
Every 250 h
  • Change engine oil and filter.
  • Check and top up hydraulic fluid.
  • Check battery electrolyte level.
  • Inspect drive belts and hoses.
  • Clean radiator and oil cooler fins.
Every 500 h
  • Replace fuel filter element.
  • Replace air filter primary element.
  • Test coolant for SCA concentration.
  • Check fuel line clamps and connections.
  • Inspect turbocharger for shaft play.
Every 1,000 h
  • Replace hydraulic return filter.
  • Check valve lash and adjust if necessary.
  • Inspect exhaust manifold bellows for cracks.
  • Check injector wiring harness integrity.
  • Test engine shutdown alarms.
Every 2,000 h
  • Replace coolant and flush system.
  • Replace fuel injector O-rings.
  • Inspect cylinder head bolts for torque.
  • Check aftercooler core for blockage.
  • Calibrate electronic governor.
Every 4,000 h
  • Replace spark plugs.
  • Inspect ignition coils for wear.
  • Clean fuel control valve.
  • Check throttle plate actuator operation.
  • Inspect air shutoff valve mechanism.

Servicing the G3512E beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize S·O·S Services to monitor engine oil wear metals and coolant SCA levels every 250 hours. Track coolant pH and glycol concentration to prevent liner cavitation and corrosion. Analyze fuel quality for moisture and particulate content to protect the ADEM4 electronic fuel control valve. Monitor vibration trends on the generator end bearings to detect rotor imbalance early. Use CAT ET software to log fault codes and track engine load profiles for optimal interval adjustment.

Corrective & Common Repairs

Address cracked exhaust manifold bellows and leaking water pump seals common in high-hour units. Replace worn ignition coils and spark plugs to maintain consistent spark energy for low-Btu gas mixtures. Clean or replace the fuel control valve if dirty gas causes sticking or erratic governing. Inspect the throttle plate actuator for binding and replace the actuator gear if backlash exceeds limits. Repair turbocharger compressor fouling caused by oilfield dust or marine salt air exposure.

Overhaul & Rebuild Points

Perform cylinder head overhaul when valve seat recession exceeds limits or combustion chamber deposits impair airflow. Replace piston rings and liners if oil consumption exceeds specifications or compression drops below threshold. Inspect crankshaft main and rod bearings for wear during major service intervals. Rebuild the turbocharger if shaft play or compressor blade damage is detected. Replace all gaskets and seals during cylinder head removal to ensure proper compression and gas sealing.

Seasonal & Environment Servicing

In cold climates, verify jacket water heater operation and coolant glycol ratio for proper cold starts. Install air intake pre-heaters if ambient temperatures drop below operating limits. In dusty environments, shorten air filter replacement intervals and clean radiator fins daily. In marine applications, inspect for saltwater corrosion on exhaust components and cooling system fittings. Use appropriate grease for high-load pivot points and check all electrical connections for moisture ingress.

G3512E common service parts

Part numberPart
1D-4540Bolt,Machine Fuel Filter MountingCheck fitment →
280-4180Filter Element As-AirCheck fitment →
105-9741Element As-PrimaryCheck fitment →
1H-5514Bolt,Machine Engine Oil Filter AssemblyCheck fitment →
275-2604Filter As-Engine OilCheck fitment →

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

G3512E fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
110-0Engine Coolant Temperature — Above NormalLow coolant level, failed thermostat, or blocked radiator core.Check coolant level and inspect for leaks; verify thermostat function.
110-3Engine Coolant Temperature Sensor — Voltage Above NormalOpen circuit in sensor wiring or failed sensor.Inspect sensor wiring harness for damage; replace sensor if confirmed faulty.
174-3Engine Fuel Temperature — Voltage Above NormalOpen circuit in fuel temperature sensor wiring.Inspect harness and replace sensor if necessary.
190-8Engine Speed — Abnormal FrequencySpeed sensor air gap issue, sensor failure, or tone ring damage.Check sensor gap; test speed sensor and tone ring.
41-38-Volt DC Supply — Voltage Above NormalShort to power on 8V reference circuit.Inspect sensors sharing the 8V supply and isolate fault.
41-48-Volt DC Supply — Voltage Below NormalShort to ground on 8V reference circuit.Disconnect sensors one at a time to locate short.
2348-9SAE J1939 Data Link #2 — Abnormal Update RateCAN bus wiring damage or termination fault.Check CAN wiring and measure termination resistance.
E360Engine Coolant Temperature — High (Event Code)Severe cooling system failure or low coolant.Stop operation immediately; diagnose cooling system.
E361Engine Coolant Temperature — Very High (Shutdown)Critical cooling system failure.Engine shutdown required; perform full cooling system diagnosis.
164-3Injector Actuation Pressure — Voltage Above NormalProblem at the actuator pressure sensor or its signal circuit.Look for issues at the actuator pressure sensor or signal circuit.

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

G3512E attachments & work tools

Genset Enclosures

Factory-designed and tested bolt-on system expansion attachments provide flexible packaging options for easy and cost-effective installation. These enclosures are part of the wide range of attachments available to configure the generator set for specific site requirements.

Fuel Systems

The fuel system is sized for dry pipeline natural gas with a heating value of 31.5 to 47.2 MJ/NM3. It requires an engine fuel inlet pressure of 10.2 to 34.5 kPa and includes a gas train compliant with NFPA37 and CSA B149.3 standards.

Control Panels

Standard equipment includes the Cat ECS 100 control panel, which features a user-friendly interface and scalable system design. Optional upgrades include the EMCP 4 control platform, remote annunciators, and local or remote PC monitoring modules.

Circuit Breakers

Optional circuit breakers include 1200A, 1600A, and 2000A 3-pole UL-100% rated P-Frame and R-Frame breakers. Masterpact circuit breakers and 5th digit rating frames are also available as factory-installed options.

Cooling Systems

The cooling system is designed to operate in standard ambient temperatures up to 43°C (110°F). Options include remote radiators for jacket water and separate circuit aftercooler (SCAC) circuits, along with inlet and outlet connections.

Exhaust Systems

Factory options include 305 mm (12 in.) elbows, mufflers, and spark arresting mufflers with 18 or 25 dBA attenuation. Flexible fittings and flanges are available to integrate with site-specific exhaust piping.

Generator Components

The SR5 generator features a Digital Voltage Regulator (CDVR) with reactive droop capability and 3-phase voltage sensing. Optional components include cable access boxes, European bus bars, and bearing temperature detectors.

Starting and Charging

Standard equipment includes 24V DC starting motors and batteries with racks and cables. Optional charging systems include 20A and 45A 24VDC battery chargers and alternators, along with jacket water heaters for cold climates.

All G3512E assemblies by section

Every catalogued assembly group for the Caterpillar G3512E. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
223-1162 Actuator & Mtg Gp-Bypass
22***61Bracket As1
22***62Actuator & Mtg Group-Bypass1
30***95Actuator & Mtg Group-Bypass; -Lh1
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304-9395 Actuator & Mtg Gp-Bypass -Lh
19***78Bolt-Socket Head; (5/16-24x0.75-In)4
22***78Coupling1
27***33Screw-Hex Socket; (M6x1x20-mm)2
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332-3751 Aftercooler Gp-Water -Mounting
15***25Valve-Shutoff; (Coolant)2
16***60Plug2
1A***60Capscrew, Hex Head (1/2 - 13 X 2 G5); (Hex Head) (1/2-13x2 Gd 8 Z)12
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332-3754 Aftercooler Gp-Water
1A***60Capscrew, Hex Head (1/2 - 13 X 2 G5); (Hex Head) (1/2-13x2 Gd 8 Z)12
1F***58Nut-Full; (1/2-13-Thd)(Air Lines)12
24***94Seal-O-Ring1
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254-6990 Aftercooler Gp-Water -Mounting
15***25Valve-Shutoff; (Coolant)2
16***60Plug2
1A***60Capscrew, Hex Head (1/2 - 13 X 2 G5); (Hex Head) (1/2-13x2 Gd 8 Z)12
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252-0506 Aftercooler Gp-Water -Mounting
15***25Valve-Shutoff; (Coolant)2
16***60Plug2
1A***60Capscrew, Hex Head (1/2 - 13 X 2 G5); (Hex Head) (1/2-13x2 Gd 8 Z)12
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241-3300 Aftercooler Gp-Water
1A***60Capscrew, Hex Head (1/2 - 13 X 2 G5); (Hex Head) (1/2-13x2 Gd 8 Z)12
1F***58Nut-Full; (1/2-13-Thd)(Air Lines)12
21***94Core As-Aftercooler2
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332-3752 Aftercooler Gp-Water -Mounting
15***25Valve-Shutoff; (Coolant)2
16***60Plug2
1A***60Capscrew, Hex Head (1/2 - 13 X 2 G5); (Hex Head) (1/2-13x2 Gd 8 Z)12
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332-3753 Aftercooler Gp-Water -Mounting
15***25Valve-Shutoff; (Coolant)2
16***60Plug2
1A***60Capscrew, Hex Head (1/2 - 13 X 2 G5); (Hex Head) (1/2-13x2 Gd 8 Z)12
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132-9325 Air Cleaner Gp
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly42
11***35Clamp8
13***24Precleaner Group3
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276-5929 Air Cleaner Gp
20***64Cover1
27***29Air Cleaner Group1
28***80Filter Element As-Air; (Primary)1
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132-9326 Air Cleaner Gp
10***41Element As-Primary; (Air Cleaner)2
13***26Air Cleaner Group; -Basic1
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292-1239 Elbow Gp-Air Inlet
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting10
15***63Seal-O-Ring1
17***38Plug-Pipe2
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227-9038 Elbow Gp-Air Inlet
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting10
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
16***73Clamp As; (V-Band)1
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345-9534 Fitting Gp-Exhaust
2Y***29Nut-Hard; (M10 X 1.5)12
34***33Adapter1
34***34Fitting Group-Exhaust1
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345-9532 Fitting Gp-Exhaust
16***42Bolt; (M10x1.5x55-mm)12
2Y***29Nut-Hard; (M10 X 1.5)12
34***31Bellows As1
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2w-7871 Flange Gp-Exhaust
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting12
1B***55Nut,Plain,Hexagon Turbocharger Mounting12
1B***57Nut-Full; 19.05mm(.75in)O.D.12
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9y-8220 Indicator Gp-Air Filter Change
3B***52Elbow; --Cross To Hose Assembly To Air Gauge1
5L***33Fitting (To Air Cleaner)1
9Y***20Indicator Group-Air Filter Change1
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340-0760 Indicator Gp-Air Filter Change
14***90Seal-O-Ring1
26***23Connector1
34***60Indicator Group-Air Filter Change1
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292-1238 Lines Gp-Air -Turbocharger
03***85Bolt-12 Point Hd-Engine Flywheel To2
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard2
18***32Bellows As1
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241-3295 Lines Gp-Air -Throttle To Aftercooler
13***96Gasket1
13***97Cover1
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case4
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292-1237 Lines Gp-Air -Compressor Bypass
0S***69Bolt 95.25 mm(3.75 In.) Long4
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
13***18Seal-O-Ring; (Camshaft)1
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241-3296 Lines Gp-Air -Plenum
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold16
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting24
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine2
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292-1240 Manifold Gp-Exhaust
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***8214
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard1
14***56Bolt; (1/2-13x2-In)4
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228-4988 Mounting Gp-Air Cleaner -Vertical Mount
22***88Mounting Group-Air Cleaner; -Vertical Mount1
22***89Support As1
22***90Bracket2
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132-9324 Precleaner Gp
241-3307 Shield Gp-Exhaust
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly12
22***61Support As6
22***43Plate4
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256-4575 Shield Gp-Manifold
25***75Shield Group-Manifold1
26***05Shield As; (Transition Elbow, Upper, Lh)1
26***06Shield As; (Transition Elbow, Lower, Lh)1
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231-2320 Shield Gp-Manifold
23***04Shield As; (Transition Elbow, Rh, Lower)1
23***05Shield As; (Transition Elbow, Rh, Upper)1
23***06Shield As; (Transition Elbow, Lh, Lower)1
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350-3150 Shield Gp-Manifold
30***10Shield As1
30***11Plug-Pipe, Pipe Plug; 1/8 Npt, Pipe Plug; 1/8 Npt., Pipe Plug, Shield As, Plug1
30***12Shield As1
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333-6414 Shield Gp-Manifold
32***11Shield As1
32***12Shield As1
32***13Shield As1
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301-0419 Turbocharger Gp
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case8
1D***24Bolt--19 mm (3/4 Inches) X 229 mm (9 Inches)2
20***55Cover As1
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297-3205 Turbocharger Gp
Basic Engine
257-2143 Barring & Mounting Gp -Rh
25***43Barring & Mounting Group; -Rh1
3R***37Device-Barring1
4B***43Bolt -Cover To Flywheel Housing3
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253-9515 Camshaft Gp
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold4
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case2
25***82Camshaft; (Front Rh)1
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190-3936 Connecting Rod Gp
10***30Bearing-Connecting Rod; (Standard)1
10***31Bearing-Connecting Rod; (0.63-mm Us Id)1
10***32Bearing-Connecting Rod; (1.27-mm Us Id)1
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153-0395 Coupling Gp-Generator
15***95Coupling Group-Generator1
5N***93Plate Group-Generator Coupling1
5N***79Shim .80mm(.031in)Thk3
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3n-8594 Cover Gp-Engine Lifting Eye
3E***65Nut-Hard-Self Lock; (1/4unc)1
3N***93Cover-Eye1
3N***94Cover Group1
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223-4916 Cover Gp-Accessory Drive -Front Structure
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case10
22***16Cover Group-Accessory Drive; -Front Structure1
23***46Seal-O-Ring1
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208-2900 Cover Gp-Accessory Drive -Front Structure
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case10
1B***18Washer; (25/64 X 5/8 X .064in Thk)6
20***00Cover Group-Accessory Drive; -Front Structure1
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226-7638 Cover Gp-Cylinder Block -Central Structure
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
15***06Seal-O-Ring; (11.89mm Id)1
22***38Cover Group-Cylinder Block; -Central Structure1
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241-3304 Cover Gp-Cylinder Block -Central Structure
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly16
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard4
11***49Cover As1
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253-7432 Cover Gp-Cylinder Block -Central Structure
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly16
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard4
11***49Cover As1
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253-7433 Cover Gp-Cylinder Block -Central Structure
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly12
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard4
11***49Cover As1
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252-0044 Cover Gp-Cylinder Block -Central Structure
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly12
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard4
11***49Cover As1
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204-6483 Cover Gp-Engine -Rear Structure
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold4
0L***52Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex)4
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***824
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220-0468 Cover Gp-Engine Lifting Eye
1F***11Bolt 3.50 In. (8.89 cm) Long2
22***66Cover1
22***68Cover Group-Engine Lifting Eye1
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191-8721 Cover Gp-Gear Inspection -Front Structure
19***21Cover Group-Gear Inspection; -Front Structure1
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case10
1C***51Bolt--Installation Of 2v***26 Retainer1
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191-6517 Cover Gp-Rear Housing -Rh
19***17Cover Group-Rear Housing; -Rh1
4B***43Bolt -Cover To Flywheel Housing3
4H***69Gasket Starter Mtg Part Of Kit P/N 5r***251
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222-1956 Cover Gp-Valve Mechanism
09***74Seal-O-Ring (Id=109.40mm)1
1B***90Bolt; (5/16-18x1.375-In)(Rh Front Cover)4
1H***14Bolt,Machine Engine Oil Filter Assembly4
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8n-7103 Crankshaft Gp
12***45Bolt As; (5/8-18x4.25-In)(Counterweight)36
12***86Crankshaft As1
14***31Bearing As-Main; (Standard)7
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350-1392 Cylinder Block As
22***96Cap-Crankshaft Bearing7
35***92Cylinder Block As1
4W***13Plug; (2-1/4-12 Thd)3
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350-1413 Cylinder Block As
21***26Liner-Cylinder Block12
22***96Cap-Crankshaft Bearing7
33***50Seal-Liner12
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100-8026 Cylinder Block As
10***26Cylinder Block As1
21***26Liner-Cylinder Block12
22***96Cap-Crankshaft Bearing7
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353-3970 Cylinder Block Gp
21***68Seal-O-Ring; (11.89-mm Id)6
2W***40Plug-Oil Manifold8
35***92Cylinder Block As1
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241-3298 Cylinder Block Gp
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard2
10***26Cylinder Block As1
11***94Plate-Spacer12
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315-2630 Cylinder Head As
18***94Guide-Valve; (Exhaust)(Standard)2
18***95Guide-Valve; (Intake)(Standard)2
20***27Gasket1
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220-0694 Cylinder Head Gp
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)2
11***91Gasket-Cylinder Head1
13***20Fastener Group-Cylinder Head8
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315-2632 Cylinder Head Gp
19***02Spring-Valve; (Inner)4
20***62Washer; (17.8x45x7.29-mm Thk)4
21***35Rotocoil As4
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8n-7182 Damper Gp
19***88Damper As1
2M***49Washer-Retainer To Fan Bracket Assembly10
5P***50Washer-Front Support Frame Assembly To6
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190-8843 Drain Gp-Engine Oil
19***43Drain Group-Engine Oil1
3B***96Fitting; (Nipple)1
3E***19Valve Group-Manual1
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155-8502 Gear Gp-Front
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)5
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
0T***55Bolt; (3/8-16x4.25-In)(Location S)2
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269-8611 Drive Gp-Accessory
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold4
0S***92Bolt--Cover To Flywheel Housing4
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly6
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199-3429 Drive Gp-Accessory -Lower, Lh
0S***92Bolt--Cover To Flywheel Housing2
0T***55Bolt; (3/8-16x4.25-In)(Location S)2
11***65Bearing1
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190-8839 Fastener Gp-Oil Pan
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case2
19***39Fastener Group-Oil Pan1
5M***94Washer; Bracket To Tee, Bracket To Block, Tube As. To Tee, Tube As. To Oil Cooler2
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2w-8772 Flywheel Gp
23***43Gear-Flywheel; (183-Teeth)1
24***19Flywheel As1
2W***72Flywheel Group1
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112-5674 Gear Gp-Rear -Cam Drive
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold4
10***65Plate-Thrust1
10***68Washer-Thrust; (19.50 X 106 X 1.9mm Thk)2
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8n-9639 Guard Gp-Damper
03***35Bolt-Self Locking; 2.22cm(.875 In.) Lg6
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***824
0S***21Bolt --Brace To Starting Engine Mounting Pad; Bolt-- Brace To Starting Engine Mounting Pad8
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203-9448 Guard Gp-Damper
03***35Bolt-Self Locking; 2.22cm(.875 In.) Lg6
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***824
19***12Guard As1
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213-8468 Housing Gp-Flywheel
1A***69Bolt (R.H. Side Flywheel Housing)2
1D***90Bolt 4.75 In.(120.65 mm) Long16
21***68Housing Group-Flywheel1
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213-8469 Housing Gp-Front
0S***87Bolt-Bracket Assembly To Timing Gear4
10***34Housing-Accessory Drive1
1D***93Bolt 5.5 In. (13.97 cm) Long10
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212-2116 Lifting Gp-Engine
21***14Eye-Lifting1
21***15Bracket-Lifting2
21***16Lifting Group-Engine1
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8n-9570 Mounting Gp-Engine Flexible
5P***97Washer; (17x45x6-mm Thk)8
8N***70Mounting Group-Engine Flexible1
8N***70Mount Assem. (Generator Set)8
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241-3292 Pan Gp-Oil
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case16
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
0T***65Bolt--3/8" X 3 1/2"--Use As Required; Bolt 5t***56 Plate To Cover Gp 4n***7238
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241-3293 Pan Gp-Oil
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold1
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine2
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter8
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350-1436 Piston Gp
0T***02Bolt; (3/8-16x0.625-In)(Shield To Head)1
13***06Pin-Piston1
1B***90Bolt; (5/16-18x1.375-In)(Rh Front Cover)1
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240-7096 Plug Gp-Engine -Front Housing
24***96Plug Group-Engine; -Front Housing1
8T***65Plug-Pipe; (Diesel Particulate Filter)2
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190-8842 Plug Gp-Oil Pan
19***42Plug Group-Oil Pan1
4B***63Plug-Oil Drain; (Engine Oil Pan)1
6F***68Gasket; (Oil Pan)1
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7w-3813 Seal Gp-Crankshaft
11***32Seal Group-Crankshaft; (Cw Rotation)1
11***33Seal Group-Crankshaft; (Ccw Rotation)1
7W***13Seal Group-Crankshaft1
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258-5407 Valve Mechanism Gp
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)4
15***84Pin-Spring1
20***03Screw-Adjusting; (1/2-20-3b Thd X 2.42in)2
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Cooling System
210-8590 Connection Gp-Water -Rh
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter8
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly5
15***57Union As1
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210-6270 Connection Gp-Water -Lh
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter8
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly5
0S***17Bolt --Use Open Hole In Compressor Body1
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190-8490 Cover Gp-Regulator Housing
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly5
14***86Gasket1
19***90Cover Group-Regulator Housing1
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200-6412 Housing & Regulator Gp -Outlet Control
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
11***74Valve As-Vent Line1
13***71Housing As-Regulator1
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257-8391 Housing & Regulator Gp
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case4
21***28Housing1
21***29Adapter1
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227-3805 Housing & Regulator Gp -Aftercooler
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case4
20***08Regulator-Water Temperature; (60-Deg C)2
21***28Housing1
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232-0422 Housing & Regulator Gp -Outlet Control
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
11***74Valve As-Vent Line1
13***71Housing As-Regulator1
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3n-2451 Joint As-Tube
251-8246 Lines Gp-Water -Customer Connection
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine4
20***18Gasket2
20***79Elbow1
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350-3113 Lines Gp-Water -Scac System
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold4
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case2
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting5
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301-0418 Lines Gp-Water -Turbocharger
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting2
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***824
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
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252-0504 Lines Gp-Water -Upper
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting2
0S***87Bolt-Bracket Assembly To Timing Gear8
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter1
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252-0485 Lines Gp-Water -Bypass
0L***52Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex)3
0S***87Bolt-Bracket Assembly To Timing Gear5
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)4
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254-3439 Lines Gp-Water -Lower
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case3
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting4
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter6
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252-0502 Lines Gp-Water -Lower
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
0T***65Bolt--3/8" X 3 1/2"--Use As Required; Bolt 5t***56 Plate To Cover Gp 4n***722
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259-1917 Lines Gp-Water -Bypass
0L***52Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex)3
0S***87Bolt-Bracket Assembly To Timing Gear5
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
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292-1241 Lines Gp-Water -Vent
0S***17Bolt --Use Open Hole In Compressor Body2
12***47Spacer; (10.5x20x12-mm Thk)1
14***29Clip3
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252-0512 Lines Gp-Water -Separate Circuit Aftercooler
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold4
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case2
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting5
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241-3305 Manifold Gp-Water -Upper
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine4
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly28
12***56Gasket2
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291-4311 Pump Gp-Auxiliary Water
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)4
12***00Bearing-Sleeve1
21***79Shaft; (14-Teeth)1
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212-8177 Pump Gp-Water
0S***18Bolt; (5/16-18x1-In)(Hydraulic Pump)2
16***74Ring As1
16***76Seal Group-Water Pump; (Face Type)1
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2w-9729 Pump Gp-Water
14***62Seal-O-Ring1
21***77Pump Group-Water1
2W***29Pump Group-Water; Water Pump Group1
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Electrical And Starting System
333-1184 Alternator Gp-Charging
10***31Fan-Alternator; (11-Blade)1
18***34Nut-Flange; (5/8-18-Thd)1
1H***44Lockwasher (Bracket To Cab)1
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286-0177 Battery Charger
7l-7871 Battery Gp
1M***19Bolt; (5/16-18x1.375-In)(5/16-18x1.375 In)2
1M***20Nut-Battery Terminal (5/16-18 Thd); (5/16-18-Thd)(5/16-18x1.375 In)2
2V***97Cable Assem.1
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7l-7872 Battery Gp
1M***19Bolt; (5/16-18x1.375-In)(5/16-18x1.375 In)2
1M***20Nut-Battery Terminal (5/16-18 Thd); (5/16-18-Thd)(5/16-18x1.375 In)2
2V***97Cable Assem.1
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9x-9730 Battery Gp -Dry
7N***60Vent As; (Battery)6
9X***30Battery Group; (12 Volt)(Dry)(Each Includes)1
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122-1194 Box & Mounting Gp -Cable Access
12***94Box & Mounting Group; -Cable Access1
12***33Frame As-Box1
12***35Cover-Top1
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210-9035 Box As-Control
19***01Box1
20***93Spacer; (4.6x12.7x11-mm Thk)8
20***95Spacer; (10.5x15.9x33-mm Thk)4
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292-5344 Box Gp-Control
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case3
0T***02Bolt; (3/8-16x0.625-In)(Shield To Head)3
10***07Switch-Operator; (Secondary Stop Push Button)1
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166-5168 Box Gp-Extension Terminal -Rh
16***68Box Group-Extension Terminal; -Rh1
16***80Box-Extension1
16***81Panel-Side; (Side)1
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166-5188 Box Gp-Extension Terminal -Lh
16***80Box-Extension1
16***81Panel-Side; (Side)1
16***82Panel-Bottom1
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166-5176 Box Gp-Generator Connection
16***76Box Group-Generator Connection1
16***77Box-Outlet1
16***78Panel-Back1
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141-1808 Box Gp-Generator Connection
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case6
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly18
0S***16Screw,Cap,Hexagon H Receptacle Mtg; Bolt Brackets To Firewall Assembly2
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303-8245 Box Gp-Junction
20***96Circuit Breaker As; (2.5-Ampere)2
20***97Circuit Breaker As; (10-Ampere)1
20***98Circuit Breaker As; (35-Ampere)1
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7w-0825 Cable Gp-Battery
1M***19Bolt; (5/16-18x1.375-In)(5/16-18x1.375 In)2
1M***20Nut-Battery Terminal (5/16-18 Thd); (5/16-18-Thd)(5/16-18x1.375 In)1
1S***51Terminal-Cable; (00-Ga, 1/2-In Screw)2
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121-8855 Connection Gp-Electrical
12***55Connection Group-Electrical1
16***12Wire As-Ground1
17***97Strip Group-Terminal; -Ac1
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212-0221 Connection Gp-Electrical
21***21Connection Group-Electrical1
21***22Strip Group-Terminal1
4F***57Screw,Cap,Hexagon H Shock Mount To Bracket2
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121-9638 Connection Gp-Electrical -Basic
12***38Connection Group-Electrical; -Basic1
17***00Strip Group-Terminal; -Main1
4F***57Screw,Cap,Hexagon H Shock Mount To Bracket2
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121-9640 Connection Gp-Electrical -Rtd
12***38Connection Group-Electrical; -Basic1
12***40Connection Group-Electrical; -Rtd1
17***96Strip Group-Terminal; -Rtd1
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256-7512 Control Gp-Communication -Pl1000e
25***12Control Group-Communication; -Pl1000e1
33***85Film-Warning; (Csa Control Panel Approval)1
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256-7511 Control Gp-Communication -Pl1000t
12***74Screw-Pan Head; (8-32x9.52-mm)1
13***26Washer; (4.52x8.28x0.76-mm Thk)1
25***11Control Group-Communication; -Pl1000t1
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154-6713 Control Gp-Engine Electronic
15***13Control Group-Engine Electronic1
18***72Screw-Pan Head; (No 8-32x9.52-mm)(Wax Coated)1
32***17Control Group-Engine Electronic1
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166-5185 Conversion Gp-Wiring
16***68Box Group-Extension Terminal; -Rh1
16***85Conversion Group-Wiring1
16***86Connection Group-Terminal Strip2
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128-1480 Frame Gp-Generator Connection
12***80Frame Group-Generator Connection1
1D***72Bolt-Carriage; (1/2-13x5.5-In)6
5S***03Nut-Full; (5/16 X 18 Thd)6
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276-0785 Harness As-Control -Pl1000e
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
11***62Tube-Heat Shrink; (10.85-mm Dia)(299-cm)0
12***75Tube-Heat Shrink; (7.44-mm Dia)(560-cm)0
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270-1732 Harness As-Control -Pl1000t
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
11***62Tube-Heat Shrink; (10.85-mm Dia)(299-cm)0
12***74Tube-Heat Shrink; (5.72-mm Dia)(950-cm)0
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242-3100 Harness As-Wiring -Generator Terminal Strip
10***38End-Wire; (16-Ga)24
13***40Resistor As-Connection; (3-Pin)1
15***66Wedge-Plug Lock; (3-Pin)1
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240-6833 Harness As-Wiring -Ignition, Lh
06***88Locknut; (1-11-1/2-Thd)1
10***38End-Wire; (16-Ga)6
12***74Tube-Heat Shrink; (5.72-mm Dia)(950-cm)0
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178-2964 Harness As-Wiring -Alarm
10***38End-Wire; (16-Ga)3
17***64Harness As-Wiring; -Alarm1
5P***75Terminal-Fork; (14-Ga To 16-Ga, No. 8 Screw)(14-16 Gauge, No.10 Screw)3
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291-5106 Heater Gp-Jacket Water
19***79Seal2
19***85Element-Heating; (400-Volt, 9000-Watt)1
19***88Thermostat; (110-Deg F)1
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292-5331 Ignition Gp-Gas Engine
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly1
13***51Seal; (Pressure Relief)12
22***44Tube12
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320-9979 Installation Gp-Communication
22***59Cable As-Communication1
25***12Control Group-Communication; -Pl1000e1
27***85Harness As-Control; -Pl1000e1
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320-9980 Installation Gp-Communication
25***11Control Group-Communication; -Pl1000t1
27***32Harness As-Control; -Pl1000t1
32***80Installation Group-Communication1
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201-1483 Mounting Gp-Control
0S***87Bolt-Bracket Assembly To Timing Gear4
20***83Mounting Group-Control1
20***84Bracket As1
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269-3729 Mounting Gp-Jacket Wtr Heater -Lh
00***43Elbow2
00***07Elbow; (90 Degree)1
05***58"P" Clip1
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141-1810 Mounting Gp-Transformer
14***10Mounting Group-Transformer1
3E***65Nut-Hard-Self Lock; (1/4unc)2
5P***15Washer-Mount 9w***75 Fuel Level Sensor4
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221-0752 Relay Gp -Space Heater
10***38End-Wire; (16-Ga)4
12***99Harness As-Wiring; (Main Terminal Strip)1
12***97Harness As-Wiring; (Dc Terminal Strip)1
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128-3326 Relay Gp -Auxiliary
12***26Relay Group; -Auxiliary1
21***40Spring; (Relay)(Us Sourced)1
22***70Relay; (10-Ampere, 24-Volt)(Us Sourced)1
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158-6181 Relay Gp
15***81Relay Group; -Engine Failure1
21***40Spring; (Relay)(Us Sourced)1
22***70Relay; (10-Ampere, 24-Volt)(Us Sourced)1
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241-3338 Sensor & Mtg Gp-Electric
00***29Tee1
03***46Elbow, 90 Deg Adj., 1/4in. J.I.C. X 7/16in.-14 Str. Thd.2
06***93Bushing-Reducer; (1/2-14 Nptf)1
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9x-5392 Sensor Gp-Speed
17***49Strap; (Marker)1
18***35Pin-Connector; (16-Ga To 18-Ga)2
8T***32Receptacle-Connector; (3-Pin)(Throttle Position Sensor)1
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229-5706 Sensor Gp-Speed -Magnetic, Timing
22***06Sensor Group-Speed; -Magnetic, Timing1
4B***81Washer--Use With Customer'S Ground Bolt1
9X***92Sensor Group-Speed; -Timing1
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265-9034 Sensor Gp-Speed
11***66Seal-O-Ring1
13***07Washer; (21.1x28.1x0.9-mm Thk)1
18***40Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga)3
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141-4160 Sensor Gp-Temperature -Generator Bearing
14***60Sensor Group-Temperature; -Generator Bearing1
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141-4158 Sensor Gp-Temperature -Generator Bearing
14***58Sensor Group-Temperature; -Generator Bearing1
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207-2371 Sensor Gp-Temperature -Thermocouple
12***74Tube-Heat Shrink; (5.72-mm Dia)(950-cm)0
18***35Pin-Connector; (16-Ga To 18-Ga)2
20***71Sensor Group-Temperature; -Thermocouple1
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6v-0927 Starting Motor Gp-Electric
03***21Shim Lever Housing1
03***23Bolt; (1/4-28x1-In)13
04***65Screw 19.05 mm(.750 In.) Long4
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237-1962 Starting Motor Gp-Electric
03***21Shim Lever Housing1
04***65Screw 19.05 mm(.750 In.) Long4
0S***97Capscrew (1/4 - 28 Nf X 1 Gd8, Hex)13
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191-6658 Starting Motor Gp-Electric
19***58Starting Motor Group-Electric1
3L***36Spacer-Bracket To Diesel Water Passage Cover1
3L***04Shield-Terminal4
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259-7018 Strip As-Terminal -Dc
09***21Rail-Mounting; (60-cm)0
16***89Bracket-End2
16***17Cover-Terminal15
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259-7019 Strip As-Terminal -Communication
09***21Rail-Mounting; (60-cm)0
25***19Strip As-Terminal; -Communication1
31***98Block-Terminal; (600-Volt, 25-Ampere)19
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260-4824 Strip As-Terminal -Ac
09***21Rail-Mounting; (60-cm)1
24***18Holder-Fuse1
26***24Strip As-Terminal; -Ac1
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170-5396 Strip Gp-Terminal -Rtd
09***21Rail-Mounting; (60-cm)1
17***96Strip Group-Terminal; -Rtd1
31***98Block-Terminal; (600-Volt, 25-Ampere)34
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212-0222 Strip Gp-Terminal
09***21Rail-Mounting; (60-cm)1
21***22Strip Group-Terminal1
21***23Film-Identification; (Terminal Marker)1
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170-5399 Strip Gp-Terminal -Dc
09***21Rail-Mounting; (60-cm)1
16***06Bar1
17***99Strip Group-Terminal; -Dc1
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170-5397 Strip Gp-Terminal -Ac
09***21Rail-Mounting; (60-cm)1
17***97Strip Group-Terminal; -Ac1
19***80Marker1
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170-5400 Strip Gp-Terminal -Main
09***21Rail-Mounting; (60-cm)1
15***55Fuse; (10-Ampere)2
17***00Strip Group-Terminal; -Main1
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3n-7056 Support Gp-Battery
3N***54Support As-Battery1
3N***55Board1
3N***56Support Group-Battery1
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7n-0718 Switch Gp-Disconnect -Battery
2H***22Lockwasher2
6F***45Nut-Full; (3/8-24-Thd)2
7N***18Switch As-Disconnect; -Battery-Ground Level1
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232-4878 Switch Gp-Disconnect -Battery
03***95Terminal-Ring; (0000-Ga, 3/8-In Screw)1
23***72Bracket1
23***78Switch Group-Disconnect; -Battery1
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260-4828 Terminal & Plate As -Communications
19***37Screw; (8-32x1/2-In)6
1H***93Lockwasher (External Tooth)6
21***64Duct-Wire; (535-mm Each)0
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260-4829 Terminal & Plate As -Ac
19***37Screw; (8-32x1/2-In)7
1H***93Lockwasher (External Tooth)7
21***64Duct-Wire; (535-mm Each)0
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316-4967 Transducer -Watt
324-9125 Transducer -Watt
139-0355 Transformer -Current
139-0354 Transformer -Current
139-0374 Transformer Gp-Current
13***55Transformer; -Current3
13***74Transformer Group-Current1
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144-9059 Transformer Gp-Current
12***89Transformer As-Current1
14***10Mounting Group-Transformer1
14***59Transformer Group-Current1
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139-0383 Transformer Gp-Current
13***54Transformer; -Current1
13***83Transformer Group-Current1
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139-0373 Transformer Gp-Current
13***54Transformer; -Current3
13***73Transformer Group-Current1
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139-0384 Transformer Gp-Current
13***55Transformer; -Current1
13***84Transformer Group-Current1
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154-3454 Transformer Gp-Potential
15***70Shelf; (Transformer)1
15***54Transformer Group-Potential1
15***88Transformer As; (Low Voltage)2
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310-3180 Transformer Gp-Potential
12***72Seal-O-Ring1
21***68Seal-O-Ring; (11.89-mm Id)1
28***70Transformer As1
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9y-6992 Valve Gp-Solenoid
10***92Valve Group-Solenoid; -Gas Shutoff1
4P***77Gasket1
9X***06Receptacle As1
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103-0692 Valve Gp-Solenoid
10***92Valve Group-Solenoid; -Gas Shutoff1
7X***78Coil As1
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207-3814 Wire As -Product Link, Splice
303-8486 Wiring Gp-Box
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)4
12***16Mount-Flexible2
1F***50Nut Rops Support4
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292-5334 Wiring Gp-Engine
29***34Wiring Group-Engine1
29***35Harness As-Engine1
29***36Harness As-Wiring; (Ignition, Rh)1
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350-5383 Wiring Gp-Engine
11***62Tube-Heat Shrink; (10.85-mm Dia)(299-cm)0
2L***50Terminal; (6 Gauge) 6.4mm(.25in)Screw1
2L***58Terminal (To Alternator Positionor A Terminal)1
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292-5333 Wiring Gp-Engine
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
0S***15Bolt 19 mm (.75 In.) Long Return Air Console To Enclosed Rops2
12***16Mount-Flexible2
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241-3378 Wiring Gp-Generator
10***38End-Wire; (16-Ga)3
11***84Switch As-Toggle; (Momentary)(Manual Engine Speed Control)1
12***74Tube-Heat Shrink; (5.72-mm Dia)(950-cm)0
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242-7960 Wiring Gp-Generator
24***00Harness As-Wiring; -Generator Terminal Strip1
24***60Wiring Group-Generator1
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344-9622 Wiring Gp-Generator -Interconnect
31***78Harness As-Panel; -Customer Connection1
34***22Wiring Group-Generator; -Interconnect1
3S***93Strap-Cable-To Tie Harnesses Together5
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292-5329 Wiring Gp-Sensor -Thermocouple
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case1
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard1
0S***20Bolt--Customer Grounding Bolt3
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Enclosures, Guards And Bases
324-4579 Bracket Gp-Support
18***14Bracket-Support2
18***15Plate1
32***79Bracket Group-Support1
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219-4073 Cover Gp-Generator -Coupling
21***72Cover1
21***73Cover Group-Generator; -Coupling1
4B***60Screw-Machine; (1/4-20x2-In)3
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115-2508 Cover Gp-Generator -Top
03***84Plug 12.7 mm(.50 In.) Dia.4
11***08Cover Group-Generator; -Top1
5N***67Seal; 1.52mm(.059in)Thk3
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141-4987 Cover Gp-Generator -Coupling
12***94Cover-Drip1
14***87Cover Group-Generator; -Coupling1
1D***40Bolt,Machine Fuel Filter Mounting6
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219-4065 Cover Gp-Generator -Fan
21***65Cover Group-Generator; -Fan1
21***66Cover1
7X***01Bolt-Plt; (1/4unc X 1 1/4)4
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273-3894 Cover Gp-Generator -Exciter
09***27Lockwasher-Tooth; (0.6mm Thk)3
25***36Cover-Generator; -Exciter1
27***94Cover Group-Generator; -Exciter1
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219-4070 Cover Gp-Generator -Drip
21***68Cover1
21***70Cover Group-Generator; -Drip1
22***86Hook As4
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128-6149 Cover Gp-Generator -Front
12***49Cover Group-Generator; -Front1
4F***11Plug 3.5 cm(1.37 In.) Hole; Plug-- To Support Assembly2
5P***37Washer 5t***54 Plate To 7t***28 Cable As8
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250-1936 Cover-Generator -Exciter
275-8195 Enclosure As
27***95Enclosure As1
27***99Panel As1
28***46Strap2
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347-9502 Rail Gp-Engine Support
18***11Brace-Engine Support1
32***79Bracket Group-Support1
34***02Rail Group-Engine Support1
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Engine Arrangement
348-5498 Engine Ar
24***10Engine Ar-Core1
34***98Engine Ar1
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241-3310 Engine Ar-Core
11***74Gear Group-Rear; -Cam Drive1
19***36Connecting Rod Group12
21***16Lifting Group-Engine2
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348-5497 General Ar
Fuel System
202-4869 Control As-Governor -Load Share
20***69Control As-Governor; -Load Share1
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326-6199 Filter Gp-Fuel
31***80Filter Element Group-Fuel; (Gas)3
32***10Seal-O-Ring1
32***38Seal-O-Ring1
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321-6970 Filter Gp-Fuel
09***13Plug-Pipe1
32***70Filter Group-Fuel1
32***84Filter Element Group-Fuel; (Gas)1
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321-6971 Filter Gp-Fuel
09***13Plug-Pipe1
32***71Filter Group-Fuel1
32***85Filter Element Group-Fuel; (Gas)1
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292-1236 Lines Gp-Fuel
0S***87Bolt-Bracket Assembly To Timing Gear8
18***58Gasket6
19***86Plate3
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210-2007 Regulator Gp-Gas Pressure
294-7273 Throttle Gp
22***12Gasket1
29***72Throttle Group1
29***73Throttle Group1
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294-7272 Throttle Gp
23***32Harness As-Wiring; (Throttle)1
29***72Throttle Group1
31***08Throttle1
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204-3508 Valve Gp-Fuel
20***08Valve Group-Fuel1
20***02Washer-Hard; (4.45x9.52x1-mm Thk)22
24***20Seal1
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Generators
219-4056 Adapter Gp-Generator Coupling
15***83Sleeve-Wear1
15***38Retainer-Bar2
21***01Bracket As1
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218-4898 Bracket Gp-Mounting -Opposite Drive End
12***74Seal1
15***83Sleeve-Wear1
15***38Retainer-Bar2
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216-9721 Bracket Gp-Mounting
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting4
11***77Sleeve-Wear1
11***68Retainer-Bearing2
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166-5183 Connection Gp-Terminal Strip
12***68Insulator As3
13***95Insulator As1
16***83Connection Group-Terminal Strip1
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154-1901 Connection Gp-Terminal Strip
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***826
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
0S***18Bolt; (5/16-18x1-In)(Hydraulic Pump)36
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166-5186 Connection Gp-Terminal Strip
12***68Insulator As3
16***86Connection Group-Terminal Strip1
3B***04Lockwasher--Sheet Assembly To Angle Assembly16
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122-3487 Conversion Gp-Generator
11***12Box Group-Extension Terminal; (Low Voltage)1
12***94Box & Mounting Group; -Cable Access1
12***87Conversion Group-Generator1
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142-4450 Exciter Gp -Permanent Magnet
10***49Rotor As-Magnetic1
12***25Stator As-Magnet1
14***50Exciter Group; -Permanent Magnet1
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274-7448 Exciter Gp -Power
21***04Stator-Exciter1
27***48Exciter Group; -Power1
8H***69Bolt (4 1/4" Long)4
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215-2402 Exciter Gp -Power
20***24Rotor-Exciter1
21***02Exciter Group; -Power1
21***04Stator-Exciter1
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274-7447 Exciter Gp -Permanent Magnet
11***17Ring; (Support)1
12***25Stator As-Magnet1
27***47Exciter Group; -Permanent Magnet1
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252-4210 Generator Ar
25***09Generator Group1
25***10Generator Ar1
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252-4214 Generator Ar
11***08Film-Instruction; (Generator Notice)1
22***84Film-Identification; (Cat)2
22***24Film-Warning; (Automatic Engine Start)2
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348-2182 Generator Ar
17***19Kit-Parts; -Generator1
34***81Generator Group1
34***82Generator Ar1
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348-2181 Generator Gp
14***87Cover Group-Generator; -Coupling1
14***50Exciter Group; -Permanent Magnet1
14***00Screen Group-Air; -Generator1
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252-4213 Generator Gp
21***98Bracket Group-Mounting; -Opposite Drive End1
21***56Adapter Group-Generator Coupling1
21***65Cover Group-Generator; -Fan1
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252-4209 Generator Gp
21***98Bracket Group-Mounting; -Opposite Drive End1
21***56Adapter Group-Generator Coupling1
21***65Cover Group-Generator; -Fan1
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153-0191 Installation Ar-Generator
13***33Shim Pack; (Includes 13-Shims)6
15***91Installation Ar-Generator1
4B***03Setscrew-Square Head; (3/4-10x2-In)4
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242-3487 Mounting Gp-Voltage Regulator
03***75Washer; (0.266x1.25x0.06-In Thk)6
24***87Mounting Group-Voltage Regulator1
24***64Spacer; (8.5x12.7x94.3-mm Thk)3
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200-8965 Mounting Gp-Voltage Regulator
20***65Mounting Group-Voltage Regulator1
4L***25Lockwasher4
4W***72Knob; (Engine Speed Control)1
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200-8969 Mounting Gp-Voltage Regulator
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
11***84Switch As-Toggle; (Momentary)(Manual Engine Speed Control)1
12***51Fuse; (20-Ampere)2
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273-3902 Plate As -Terminal
5n-0593 Plate Gp-Generator Coupling
5N***93Plate Group-Generator Coupling1
5N***78Plate As1
5N***79Shim .80mm(.031in)Thk3
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298-3817 Rectifier Gp-Revolving
11***72Harness As-Wiring; (Rectifier)1
1B***75Bolt (" " " ); Bolt ( " " " )4
29***48Heat Sink As1
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314-7755 Regulator As-Voltage -Digital
24***58Film-Warning; (Shock, Electrocution Hazard)(Shock, Electrocution Hazard)1
31***55Regulator As-Voltage; -Generator1
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121-6202 Regulator Gp-Voltage -Digital
12***02Regulator Group-Voltage; -Digital1
24***87Mounting Group-Voltage Regulator1
31***55Regulator As-Voltage; -Generator1
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345-0169 Regulator Gp-Voltage
24***87Mounting Group-Voltage Regulator1
31***55Regulator As-Voltage; -Generator1
34***69Regulator Group-Voltage1
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348-2183 Rotor As
10***61Ball Bearing1
13***01Kit-Rotor Lead1
34***83Rotor As1
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274-5154 Rotor As
10***49Rotor As-Magnetic1
15***32Ball Bearing2
20***67Sleeve-Shaft1
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254-8720 Rotor Gp-Generator
21***55Fan1
25***20Rotor Group-Generator1
27***54Rotor As1
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145-6000 Screen Gp-Air -Generator
12***45Screen As-Air2
14***00Screen Group-Air; -Generator1
3E***23Bolt-Flange Head; (1/4-20x1-In)4
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254-8725 Stator As-Main
21***52Bracket1
21***53Lead Board1
25***25Stator As-Main1
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254-9187 Stator As-Main
21***52Bracket1
21***53Lead Board1
25***87Stator As-Main1
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348-2184 Stator Gp-Main
00***92Screw-Washer Head; (1/4-20x0.5-In)9
03***43Screw; (1/4-20x0.625-In)17
11***07Cover-Stator1
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139-0362 Thermostat As
12***65Thermostat; (0-Deg F To 100-Deg F)1
13***62Thermostat As1
15***75Thermostat As1
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145-6430 Thermostat As
14***30Thermostat As1
15***75Thermostat As1
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Lubrication System
211-1074 Breather Gp -Oil Fill
03***31Seal-O-Ring4
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter8
14***43Hose-Elbow4
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247-0714 Filter Gp-Engine Oil
06***56Seal-O-Ring4
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender4
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
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191-2304 Filter Gp-Fumes Disposal
19***02Gauge Group-Oil Filter Press Diff1
19***04Filter Group-Fumes Disposal1
19***73Filter Element-Breather; (Crankcase)(Fumes Disposal)1
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200-3057 Fumes Disposal Gp -Crankcase Ventilation
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
19***04Filter Group-Fumes Disposal1
19***11Tube As-Drain1
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261-1031 Gauge Gp-Oil Level (Dipstick)
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
26***31Gauge Group-Oil Level (Dipstick)1
4P***84Gauge As-Oil Level (Dipstick)1
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241-3342 Lines Gp-Engine Oil
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine2
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter8
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***822
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301-0417 Lines Gp-Turbocharger Oil
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard1
0T***73Bolt (3/8) (63.5mm Long) (On Cab Of Cover Assem.)2
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273-1698 Pump Gp-Engine Oil
27***88Pump Group-Engine Oil; -2-Section Gear1
27***98Pump Group-Engine Oil1
29***87Seal-O-Ring1
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273-1588 Pump Gp-Engine Oil -2-Section Gear
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine6
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)9
10***75Spring1
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252-0016 Pump Gp-Prelubrication
00***43Elbow 5wd342 - Up Including 5wd329 - 335, 5wd337 - 3401
00***83Nipple-Pipe; (Hexagon)1
0L***25Washer; (0.78x1.3125x0.125-In Thk)1
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237-2492 Regulator Gp-Oil Level
03***67Connector-Flared -- Adapter To Hose As.1
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender2
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
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Operator Station
130-3333 Module Gp-Alarm
13***26Film-Control Panel; (Custom Alarm Module Idents)1
13***27Film-Control Panel; (Custom Alarm Module)1
13***32Control Group-Alarm Module1
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9w-3577 Control Gp-Alarm Module
13***49Control Group-Alarm Module1
17***90Wire; (18-Ga, White)(42.5-cm Ea)0
2W***80Boot-Switch1
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130-3332 Control Gp-Alarm Module
13***32Control Group-Alarm Module1
3J***54Packing,Preformed Part Of Kit P/N 5r***271
9S***02Plug-O-Ring; (Straight Thread O-Ring)1
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9y-2907 Control Gp-Alarm Module
13***49Control Group-Alarm Module1
9Y***47Film-Identification; (Control Panel)1
9Y***07Control Group-Alarm Module1
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130-3349 Control Gp-Alarm Module
13***49Control Group-Alarm Module1
3J***54Packing,Preformed Part Of Kit P/N 5r***271
9S***02Plug-O-Ring; (Straight Thread O-Ring)1
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9y-2906 Control Gp-Alarm Module
13***49Control Group-Alarm Module1
7C***30Film-Identification1
8C***46Strap-Jumper1
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118-0175 Control Gp-Emcp Electronic
10***27Screw-Pan Head; (10-24x0.25-In)8
11***75Control Group-Emcp Electronic1
15***65Kit-Connecting Plug; (8-Pin)(Electronic Control Channel)1
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236-4559 Control Gp-Emcp Electronic
13***15Film-Control Panel; (Generator Set Control +)(Emcpii+)1
23***58Control Group-Emcp Electronic1
23***59Control Group-Emcp Electronic1
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236-4558 Control Gp-Emcp Electronic
1S***74Seal-O-Ring (164.69mm Id)1
23***58Control Group-Emcp Electronic1
3J***54Packing,Preformed Part Of Kit P/N 5r***271
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141-1956 Control Gp-Engine Monitoring
14***56Control Group-Engine Monitoring1
17***86Control Group-Engine Monitoring1
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187-9371 Module Gp-Alarm
16***08Block-Fuse1
17***64Harness As-Wiring; -Alarm1
17***00Film; (Fuse Identification)1
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187-9370 Module Gp-Alarm
16***08Block-Fuse1
17***64Harness As-Wiring; -Alarm1
17***00Film; (Fuse Identification)1
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187-9372 Module Gp-Alarm
13***33Control Group-Alarm Module; (Custom)1
16***08Block-Fuse1
18***72Module Group-Alarm1
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130-3325 Module Gp-Alarm
13***24Module Group-Alarm1
13***25Module Group-Alarm; (Custom)1
13***26Film-Control Panel; (Custom Alarm Module Idents)1
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130-3324 Control Gp-Alarm Module
13***24Module Group-Alarm1
17***90Wire; (18-Ga, White)(42.5-cm Ea)0
2W***80Boot-Switch2
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104-4704 Mounting Gp-Control Panel -Emcp Ii
10***04Mounting Group-Control Panel; -Emcp Ii1
1B***76Pin,Straight,Headed Governor And Decelerator Control1
3E***65Nut-Hard-Self Lock; (1/4unc)2
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275-8193 Mounting Gp-Instrument
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly10
1B***75Bolt (" " " ); Bolt ( " " " )5
1F***50Nut Rops Support8
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211-9726 Panel Gp-Control -Emcp Ii+
03***49Nut-Self Lock; (No.10.Unc)2
06***88Locknut; (1-11-1/2-Thd)1
10***98Panel As; (Emcpii, Subpan)1
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255-8888 Panel Gp-Electronic
12***49Lockwasher1
13***88Nut-Ring2
18***14Nut; (1-11/16-18-Thd)1
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121-4712 Panel Gp-Electronic
09***21Rail-Mounting; (60-cm)1
12***12Panel Group-Electronic1
12***26Relay Group; -Auxiliary1
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260-4827 Panel Gp-Electronic
19***37Screw; (8-32x1/2-In)16
1H***93Lockwasher (External Tooth)16
21***64Duct-Wire; (535-mm Each)0
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260-4826 Panel Gp-Electronic -Door
10***07Switch-Operator; (Secondary Stop Push Button)1
12***76Cover; (Emergency Stop)1
13***67Block-Contact; (Normally Closed)2
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255-5437 Panel Gp-Electronic -Remote
10***38End-Wire; (16-Ga)68
11***14End-Wire; (18-Ga)21
12***74Tube-Heat Shrink; (5.72-mm Dia)(950-cm)0
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131-1961 Panel Gp-Instrument
13***25Module Group-Alarm; (Custom)1
13***33Control Group-Alarm Module; (Custom)1
13***61Panel Group-Instrument1
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131-1960 Panel Gp-Instrument
13***25Module Group-Alarm; (Custom)1
13***60Panel Group-Instrument1
4P***60Washer; (Retaining Ring)6
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131-1963 Panel Gp-Instrument
13***33Control Group-Alarm Module; (Custom)1
13***63Panel Group-Instrument1
4P***60Washer; (Retaining Ring)6
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7c-5296 Panel Gp-Instrument
21***89Nut; (1/4-20-Thd)4
4P***60Washer; (Retaining Ring)4
4P***61Screw4
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Service Equipment And Supplies
352-9862 Certification Gp-Generator Set
35***62Certification Group-Generator Set1
35***92Tag1
8L***13Strap-Cable(Tie 5.50" Long)2
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6l-4502 Chart-Plate & Film
11***52Plate & Film Group; -Engine Information1
22***30Film-Warning; (Shock Hazard)2
22***26Film-Warning; (Hot Surface)2
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205-7860 Film Gp -Product Identification
20***60Film Group; -Product Identification1
23***86Plate-Identification; (Machine)(17-Pin)1
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171-6719 Kit-Parts -Generator
137-8533 Shim Pack
13***33Shim Pack; (Includes 13-Shims)1
13***34Shim; (0.025-mm Thk)1
13***35Shim; (0.0508-mm Thk)1
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G3512E serial number reference

The Product Identification Number (PIN) plate is typically located on the engine outer frame or generator set enclosure. The serial number prefix consists of the first three alphanumeric characters of the PIN, followed by a five-digit sequence ID.

PrefixIdentifies
SSRG3512E Generator Set

Frequently asked questions

What type of engine powers the G3512E?

The G3512E uses a V-12, 4-stroke-cycle, spark-ignited natural gas engine with a 50.5-liter displacement, part of the Caterpillar 3500 series.

What is the operating weight of the G3512E generator set?

Operating weight varies by configuration and attachment package; specific weights are listed on the machine data plate and in the serial-specific spec sheet.

What model replaced the G3512E?

The G3512E was succeeded by the G3512E-1000 and later models in the G3500 series, which feature updated electronic controls and emission compliance packages.

What G3512E owners discuss

What is the primary fuel type and engine architecture of the G3512E compared to the standard diesel 3512?
The G3512E is a spark-ignited natural gas engine, whereas the standard 3512 is a diesel. Both share a V-12 architecture with a 50.5-liter displacement. The G3512E is designed for continuous power and cogeneration, while the diesel variants are often used for standby or prime power in heavy industrial applications.
What are the common powertrain and combustion issues reported for the 3512 platform (applicable to G3512E maintenance)?
Common issues include excessive exhaust smoke (black, white, or blue) indicating unburnt fuel, coolant leaks, or oil burning. Operators report vibration during operation, often caused by air in the fuel system or faulty injectors. Black smoke under load is frequently linked to injectors dropping fuel rather than atomizing it, which can contaminate the oil sump.
What are the typical wear patterns and maintenance intervals for the cooling and lubrication systems?
The cooling system holds approximately 75.8 gallons (286.8 liters) total, with 41.5 gallons (157.0 liters) in the block and 34.3 gallons (129.8 liters) in the radiator. The oil sump capacity is 81 gallons (306.5 liters). Oil changes are recommended every 1,000 hours. Coolant leaks at the water pump seal and cracked exhaust manifold bellows are common on high-hour units. Air filters require frequent cleaning in dusty environments.
What electrical and sensor quirks are associated with the G3512E generator set?
The G3512E utilizes a Digital Voltage Regulator (CDVR) with reactive droop capability and 3-phase voltage sensing. Electrical instability often stems from moisture intrusion in connectors, stressed wiring harnesses, or weak batteries causing erratic ECM behavior. The engine features an annunciator panel displaying RPM, hours, oil pressure, coolant temperature, and DC voltage, with automatic shutdowns for low oil pressure, low coolant level, or excessive temperature.
What specific configuration differences exist between the G3512E and other 3512 variants?
The G3512E is a natural gas variant rated for 525–1,000 ekW depending on the specific rating and configuration. It is designed to meet TA Luft and 1/2 TA Luft emission levels. The G3512E variant for biogas or landfill gas applications includes hardened components to handle dirty gas. The standard diesel 3512 is rated from 890 kW to 1,750 kW.
What should be checked when buying a used G3512E generator set?
Verify the serial number prefix (G3512E) to confirm the model and generation. Check the condition of the fuel injectors and air intake system, as clogged filters or dirty turbos are common. Inspect the cooling system for leaks, particularly at the water pump seal and exhaust manifold bellows. Test the CDVR and electrical connections for moisture or corrosion. Confirm the engine hours and maintenance history, noting that oil changes should occur every 1,000 hours.
What safety-critical fixes require dealer verification?
Automatic shutdown system functionality must be verified by a dealer to ensure it cuts off the engine for low oil pressure, low oil level, excessive coolant temperature, or overrunning the governor. Any repairs to the governor or electronic control systems should be performed or verified by an authorized dealer to maintain compliance with NFPA 110 Type 10 standards for emergency power.

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

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