Caterpillarwheel tractor-scraperwheel tractor
Caterpillar 657E
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar 657E is a heavy-duty wheel tractor-scraper designed for high-capacity earthmoving and coal handling. This machine utilizes a twin-engine configuration, featuring a Cat 3412E engine in the tractor providing up to 605 hp (451 kW) and a Cat 3408E engine in the scraper providing up to 440 hp (328 kW). It is engineered for high travel speeds and efficient cycle times, offering a heaped capacity of 73 yd³ (55 m³) and an approximate loaded operating weight of 159,226 lb (72,224 kg). The series includes specialized coal bowl configurations and supports push-pull arrangements to increase production.
The 657E introduced significant advancements over the 657B predecessor, specifically through electronic controls like EPTC II for transmission management and an electronically controlled cushion hitch to dampen road shocks. These technological shifts improved operator comfort and drivetrain longevity. In today's used market, the 657E remains a critical asset due to its high-production capability in mining and large-scale grading. Its parts value is sustained by component commonality with other Caterpillar machines and the durability of its heavy castings and robust engine platforms.
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 657E specifications
Engine
| Tractor Engine Model | Cat 3412E |
| Scraper Engine Model | 3408E |
| Tractor Gross Power | 577 hp (430.3 kW) |
| Tractor Net Power (Gears 1-2) | 550 hp (410.2 kW) |
| Tractor Net Power (Gears 3-8) | 605 hp (451.2 kW) |
| Tractor Flywheel Power | 605 hp (451 kW) |
| Scraper Gross Power | 418 hp (311.8 kW) |
| Scraper Flywheel Power | 440 hp (328 kW) |
| Tractor Engine Displacement | 27 L (1647.7 cu in) |
| Scraper Engine Displacement | 18 L (1098.5 cu in) |
Weights
| Operating Weight - Loaded (Approximate) | 159,226 lb (72,223.8 kg) |
| Total Operating Weight - Empty | 151,810.4 lb (68,860 kg) |
| Total Operating Weight - Loaded | 255,868.6 lb (116,060 kg) |
| Rated Load | 108,669 lb (49,291.5 kg) |
| Front Axle Weight - Loaded | 130,493.9 lb (59,191 kg) |
Dimensions
| Overall Length | 53.15 ft (16,200 mm) |
| Overall Width | 14.28 ft (4,350 mm) |
| Overall Height | 15.46 ft (4,710 mm) |
| Wheelbase | 32.55 ft (9,920 mm) |
| Width of Cut | 12.7 ft (3,850 mm) |
| Max Depth of Cut | 17.4 in (440 mm) |
Performance
| Top Speed - Loaded | 31.1 mph (50 km/h) |
| Scraper Capacity - Heaped | 73 yd³ (55.9 m³) |
| Scraper Capacity - Struck | 58.7 yd³ (44.9 m³) |
| Scraper Capacity - Heaped (Alternative) | 44 yd³ (33.6 m³) |
| Tire Size | 37.5R39 Radial (E-3) |
Service capacities (summary)
| Scraper Fuel Tank Capacity | 415 gal (1,571 L/1,597 L) |
| Total Fuel Capacity | 435.9 gal (1,650 L) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
657E fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine Crankcase | Not specified | Cat DEO (for engines without aftertreatment) or Cat DEO-ULS (for Tier 4 engines with aftertreatment); SAE 10W-30 preferred for ambient temperatures between -18°C (0°F) and 40°C (104°F). Use higher viscosity if cold start requirements dictate. |
| Fuel Tank | 1597 L (415 US gal) for scraper; 1650 L (435.9 US gal) total operational capacity varies by configuration/series. | Not specified |
| Transmission/Powertrain | Not specified | Cat TDTO; use Cat TDTO Cold Weather for operations below -25°C (-13°F). |
| Final Drives | Not specified | Cat TDTO |
| Hydraulic System and Tank | Not specified | Cat HYDO Advanced 10 (SAE 10W) for cold to moderate temperatures; Cat HYDO Advanced 30 (SAE 30W) for moderate to hot temperatures. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar 657E maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the 657E beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize Cat S.O.S Services to monitor wear metals like iron, copper, and lead in engine oil. Analyze hydraulic fluid for particle count (ISO cleanliness) and water content to prevent pump cavitation. Regularly check coolant for pH levels and SCA concentration to avoid liner pitting. Monitoring silicon levels can also alert operators to early dust ingestion before catastrophic engine damage occurs.
Corrective & Common Repairs
Address hydraulic hose abrasions or leaks immediately to prevent system contamination. Monitor the electronic ground-level shutoff and transmission sensors for fault codes via EPTC II diagnostics. If the cushion hitch experiences excessive vibration, inspect nitrogen-over-oil accumulators. Ensure all O-ring face seals are intact to maintain a dry system and prevent external fluid loss during high-pressure operations.
Overhaul & Rebuild Points
Plan for major component evaluation during 2,000-hour intervals. Focus on inspecting the turbocharger, engine oil coolers, and aftercooler for thermal stress. Evaluate the condition of the eight-speed power shift transmission and final drives. When rebuilding, verify the integrity of steel spacer plates between the block and head to prevent cracking, and inspect all heavy castings in the frame and hitch for fatigue.
Seasonal & Environment Servicing
In high-dust or quarry environments, check air filters daily and clean radiator/oil cooler fins frequently. For cold weather operations, utilize the automatic ether starting aid and ensure fuel quality is maintained to prevent waxing. In hot climates, monitor hydraulic oil temperatures and consider shortened intervals for engine oil to mitigate the effects of extreme thermal loading on pistons and liners.
657E common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 129-0372 | Filter As-Water Sep & Fuel | Fuel system service | Check fitment → |
| 129-0375 | Bowl As-Water Collection | Fuel system service | Check fitment → |
| 1R-1808 | Filter As-Engine Oil | Lubrication service | Check fitment → |
| 8T-6765 | Plug-Pipe | Scheduled service item | Check fitment → |
| 9S-8752 | Nut-Full | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
657E fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E360 | Engine Coolant Temperature — High | Low coolant level, failed thermostat, or water pump issue | Diagnose cooling system; do not operate until resolved |
| E361 | Engine Coolant Temperature — Very High (Shutdown) | Severe cooling system failure | Engine shutdown required; perform full cooling system diagnosis |
| 110-0 | Engine Coolant Temp — Above Normal | Low coolant level or thermostat failure | Inspect cooling system, refill coolant, and test thermostat |
| 110-3 | Engine Coolant Temp Sensor — Voltage High | Open circuit or sensor failure | Check wiring and replace sensor if confirmed faulty |
| 174-3 | Engine Fuel Temperature — Voltage Above Normal | Open circuit in sensor wiring | Inspect harness and replace sensor if necessary |
| 190-8 | Engine Speed — Abnormal Frequency | Speed sensor air gap, sensor failure, or tone ring damage | Check sensor gap and test speed sensor and tone ring |
| 2458-2 | DPF #1 Differential Pressure — Erratic | Plugged pressure ports or failing sensor | Clean pressure ports and test sensor; verify DPF soot load |
| 41-3 | 8-Volt DC Supply — Voltage Above Normal | Short to power on 8V reference circuit | Inspect sensors sharing the 8V supply and isolate fault |
| 41-4 | 8-Volt DC Supply — Voltage Below Normal | Short to ground on 8V reference circuit | Disconnect sensors one at a/time to locate short |
| 2348-9 | SAE J1939 Data Link #2 — Abnormal Update Rate | CAN bus wiring damage or termination fault | Check CAN wiring and measure termination resistance |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
657E attachments & work tools
Scraper Bowl Configurations
Coal bowl configurations are factory-built specifically for coal handling. These bowls feature an integrated auger mechanism to lift material from the cutting edge to the top of the load.
Hitch and Mounting Systems
The machine utilizes an electronically controlled cushion hitch design. This system uses nitrogen-over-oil accumulators to dampen road shocks and includes a lock function for positive control during loading and dumping.
Hydraulic and Technology Attachments
Optional Cat Grade technology can be integrated to manage cutting and filling precision. The machine also supports optional Product Link™ for remote data collection and monitoring.
Protective and Guarding Options
A scraper driveline guard is available to protect the output case, differential, and ejector cylinder. Laminated Thermo-Shield is used to reduce engine compartment temperatures and protect exposed surfaces.
Standard Machine Configurations
The 657E can be configured in a push/pull arrangement for high-production earthmoving. Standard factory features include full scraper fenders, an overflow guard, and a functional apron and ejector.
All 657E assemblies by section
Every catalogued assembly group for the Caterpillar 657E. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
131-3272 Aftercooler Gp-Water
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 16 |
| 0S***90 | Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As) | 4 |
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 1 |
322-7932 Conversion Gp-Air Inlet & Exh
| 13***33 | Muffler Group | 1 |
| 32***32 | Conversion Group-Air Inlet & Exh | 1 |
131-3269 Lines Gp-Air
| 06***46 | Spacer; (.546x.840x1.72 In Thk) | 3 |
| 0L***65 | Stud; (3/8-16x1.75-In) | 1 |
| 0L***52 | Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex) | 3 |
179-7024 Manifold Gp-Exhaust
| 10***01 | Seal As-Exhaust | 8 |
| 10***12 | Spacer; (11.13x19.05x53-mm Thk) | 24 |
| 11***50 | Manifold-Exhaust; (Rear, Lh) | 1 |
130-5633 Muffler Gp
| 13***33 | Muffler Group | 1 |
| 16***06 | Spacer; (12.52x17.14x17.5-mm Thk) | 2 |
| 16***28 | Bracket As | 2 |
130-9199 Shield Gp-Manifold
| 10***34 | Grommet | 1 |
| 11***40 | Plate | 2 |
| 11***17 | Shield As | 2 |
164-4610 Turbocharger Gp
| 0S***14 | Bolt (.25" Diameter-.50" Long) | 4 |
| 12***65 | Housing; (Turbine) | 1 |
| 12***67 | Cover-Compressor | 1 |
127-9813 Turbocharger Gp
| 12***13 | Turbocharger Group | 1 |
| 16***10 | Turbocharger Group | 1 |
| 1S***95 | Gasket-Turbocharger To Manifold; Gasket Turbocharger To Manifold | 1 |
Basic Engine
8n-0955 Air Compressor Gp
| 0L***51 | Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold | 5 |
| 0S***85 | Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine | 3 |
| 2S***23 | Cover As; (Governor) | 1 |
4n-7378 Air Compressor Gp
| 0S***19 | Bolt,Machine Gear Retaining Part Of Kit P/N 1w***46 | 6 |
| 11***37 | Kit-Piston Ring; (Compressor 5 Ring) | 1 |
| 1W***03 | Plug | 2 |
185-7909 Camshaft Gp
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 2 |
| 10***74 | Gear-Camshaft Drive; (86-Teeth) | 1 |
| 18***09 | Camshaft Group | 1 |
129-5229 Cover Gp-Cylinder Block
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 11 |
| 12***29 | Cover Group-Cylinder Block | 1 |
| 1A***29 | Bolt (1-1/8") Tube Assembly To Transfer Drive Case | 2 |
8n-2034 Cover Gp-Flywheel Housing
| 0S***66 | Bolt-Pulley To Crankshaft Adapter | 3 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 2 |
| 0S***19 | Bolt,Machine Gear Retaining Part Of Kit P/N 1w***46 | 2 |
126-0768 Cover Gp-Front Housing
| 0L***52 | Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex) | 6 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 3 |
| 11***21 | Support-Housing; (Rh) | 1 |
131-3263 Cover Gp-Oil Pan -Engine
| 0S***87 | Bolt-Bracket Assembly To Timing Gear | 2 |
| 0S***88 | Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter | 6 |
| 10***72 | Seal-O-Ring; (40.64-mm Id) | 2 |
131-3260 Cover Gp-Valve Mechanism
| 10***88 | Base-Valve Mechanism Cover | 6 |
| 11***84 | Cover-Valve Mechanism | 2 |
| 11***15 | Cover As-Valve | 4 |
213-3202 Crankshaft As
| 15***40 | Gear-Crankshaft; (99-Teeth) | 1 |
| 21***02 | Crankshaft As | 1 |
| 4N***84 | Dowel; (.75 Long) | 1 |
4n-0922 Crankshaft Gp
| 14***67 | Seal Group-Crankshaft; (Front) | 1 |
| 14***68 | Seal-Crankshaft; (Rear)(Flywheel Housing) | 1 |
| 15***40 | Gear-Crankshaft; (99-Teeth) | 1 |
117-9512 Cylinder Block As
| 11***20 | Seal-O-Ring; (Mid-Liner) | 12 |
| 11***12 | Cylinder Block As | 1 |
| 14***17 | Seal-O-Ring; (140.20mm Id) | 12 |
126-1372 Cylinder Block As
| 12***72 | Cylinder Block As | 1 |
| 2W***15 | Insert-Liner Seat; (1.605-mm Thk)(1.59mm Thk) | 0 |
| 3P***23 | Bolt-Bearing Cap; (7/8-14x7.75-In) | 14 |
126-1373 Cylinder Block Gp
| 11***27 | Seal-O-Ring; (19.18mm Id) | 8 |
| 12***72 | Cylinder Block As | 1 |
| 12***73 | Cylinder Block Group | 1 |
109-9010 Cylinder Block Gp
| 10***23 | Insert-Liner Seat; (5.21-mm Thk)(5.21mm Thk) | 0 |
| 10***24 | . Cover, Insert-Liner Seat; (5.16-mm Thk)(0.5-mm Us) | 0 |
| 10***25 | Insert-Liner Seat; (5.26-mm Thk)(0.5-mm Os), . Cover | 0 |
192-1322 Cylinder Head As
| 10***94 | Dowel | 2 |
| 14***46 | Cylinder Head As | 1 |
| 17***88 | Guide-Valve; (Standard) | 24 |
143-0047 Cylinder Head As
| 14***46 | Cylinder Head As | 1 |
| 14***47 | Cylinder Head As | 1 |
| 17***88 | Guide-Valve; (Standard) | 24 |
143-0046 Cylinder Head As
| 14***46 | Cylinder Head As | 1 |
| 1W***83 | Insert-Valve Seat; (Exhaust)(Standard) | 12 |
| 3B***23 | Core Plug--Flywheel Housing Pinion Shaft Hole | 12 |
108-1887 Cylinder Head Gp
| 10***87 | Cylinder Head Group | 1 |
| 12***21 | Valve-Exhaust | 12 |
| 12***22 | Valve-Inlet | 12 |
108-1552 Cylinder Head Gp
| 03***27 | Seal-O-Ring; (19.18mm Id) | 2 |
| 06***61 | Seal-O-Ring (Id=40.87mm) | 12 |
| 10***92 | Stud-Taperlock; (3/8-16x3.93in) | 24 |
6n-2229 Damper Gp
| 0S***85 | Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine | 12 |
| 16***30 | Damper As | 1 |
| 2D***74 | Bolt; (5/8-18x6.75-In) | 8 |
8n-0954 Drive Gp-Accessory
| 0S***99 | Stud (1.4325" Long) | 1 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 3 |
| 1D***17 | Nut-Plate And Angle Assembly To Hydraulic And Fuel Tanks; Nut Plate And Angle Assembly To Hydraulic And Fuel Tanks | 2 |
8n-0953 Flywheel Gp
| 0S***01 | Bolt 2.75 In. (69.85 mm) Long | 12 |
| 4D***04 | Washer,Flat Cover Mtg,Accessory Drive | 12 |
| 7W***97 | Flywheel As | 1 |
126-7282 Gear Gp-Front -Timing
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 1 |
| 10***13 | Plate-Retaining | 1 |
| 10***16 | Gear; (85-Teeth)(Oil Pump) | 1 |
4n-3825 Gear Gp-Rear
| 1B***75 | Bolt (" " " ); Bolt ( " " " ) | 4 |
| 4N***25 | Gear Group-Rear; Rear Timing Gear Group | 1 |
| 4W***85 | Gear-Camshaft; (86-Teeth) | 1 |
4n-9680 Governor Gp-Air Compressor
| 2K***98 | Seal-O-Ring | 1 |
| 2S***23 | Cover As; (Governor) | 1 |
| 4N***80 | Governor Group-Air Compressor | 1 |
7w-4380 Housing Gp-Flywheel
| 0L***51 | Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold | 4 |
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 4 |
| 0T***73 | Bolt (3/8) (63.5mm Long) (On Cab Of Cover Assem.) | 5 |
126-7280 Housing Gp-Front
| 0L***52 | Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex) | 2 |
| 0T***73 | Bolt (3/8) (63.5mm Long) (On Cab Of Cover Assem.) | 3 |
| 12***80 | Housing Group-Front | 1 |
126-2267 Lifting Gp-Engine
| 0S***87 | Bolt-Bracket Assembly To Timing Gear | 4 |
| 11***75 | Bracket-Lifting; (Right) | 1 |
| 11***15 | Bracket-Lifting; (Left) | 1 |
131-3274 Lines Gp-Air Compressor
| 03***49 | Elbow; (90 Degree, 37 Degree Flared) | 1 |
| 03***95 | Connector-Flared | 1 |
| 03***69 | Elbow-Flared; (1/2-14 Nptf) | 1 |
4n-2647 Pan Gp-Oil -Engine
| 2P***03 | Bolt-Washer Head; (3/8-16x1.25-In) | 40 |
| 4N***47 | Pan Group-Oil; -Engine | 1 |
| 6N***96 | Gasket-Oil Pan | 1 |
192-8808 Piston & Rod Gp
| 13***61 | Ring-Piston; (Top)(Top) | 1 |
| 15***56 | Bolt-Special; (Oil Jet) | 1 |
| 16***78 | Rod As-Connecting | 1 |
131-3259 Plug Gp-Cylinder Block
| 13***59 | Plug Group-Cylinder Block | 1 |
| 6V***89 | Seal-O-Ring (Id=19.18mm) | 6 |
| 7W***34 | Plug-Pipe (3/8-18 Nptf Thd) | 4 |
124-4456 Plug Gp-Cylinder Head
| 12***56 | Plug Group-Cylinder Head | 1 |
| 4N***32 | Plug-Cup | 2 |
| 5P***63 | Plug-Cup | 3 |
107-1954 Rocker Arm Gp
| 10***54 | Rocker Arm Group | 1 |
| 10***03 | Screw; (3/8-24x1.67-In)(Intake) | 2 |
| 12***63 | Bracket-Shaft | 1 |
319-0785 Seal Gp-Crankshaft -Rear
| 14***68 | Seal-Crankshaft; (Rear)(Flywheel Housing) | 1 |
| 31***85 | Seal Group-Crankshaft; -Rear | 1 |
319-7401 Seal Gp-Crankshaft -Front
| 14***67 | Seal Group-Crankshaft; (Front) | 1 |
| 31***01 | Seal Group-Crankshaft; -Front | 1 |
7e-6385 Support Gp-Engine
| 0S***66 | Bolt-Pulley To Crankshaft Adapter | 4 |
| 4D***04 | Washer,Flat Cover Mtg,Accessory Drive | 4 |
| 4N***84 | Support-Front Engine | 1 |
1w-6934 Trunnion Gp-Engine
| 0S***73 | Bolt (102mm Long); (1/2-13x4-In) | 6 |
| 1W***14 | Adapter As | 1 |
| 1W***34 | Trunnion Group-Engine | 1 |
108-1874 Valve Mechanism Gp
| 0L***43 | Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender | 12 |
| 10***89 | Bridge-Valve | 24 |
| 10***88 | Valve Lifter Assem | 24 |
Cooling System
131-3267 Lines Gp-Aftercooler Water
| 0L***52 | Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex) | 1 |
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 4 |
| 0S***88 | Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter | 1 |
131-3268 Lines Gp-Turbocharger Water
| 06***13 | Connector-Flared | 1 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 9 |
| 0S***21 | Bolt --Brace To Starting Engine Mounting Pad; Bolt-- Brace To Starting Engine Mounting Pad | 1 |
133-9190 Lines Gp-Water
| 0L***43 | Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender | 1 |
| 0S***87 | Bolt-Bracket Assembly To Timing Gear | 5 |
| 0S***88 | Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter | 6 |
Electrical And Starting System
109-0400 Control & Mtg Gp-Engine Elek
| 10***00 | Control & Mtg Group-Engine Elek | 1 |
| 11***69 | Spacer-Special; (8.2x25x89.7-mm Thk) | 4 |
| 15***72 | Control Group-Engine Electronic | 1 |
156-7172 Control Gp-Engine Electronic
| 12***74 | Screw-Pan Head; (8-32x9.52-mm) | 1 |
| 13***26 | Washer; (4.52x8.28x0.76-mm Thk) | 1 |
| 15***72 | Control Group-Engine Electronic | 1 |
322-7931 Conversion Gp-Alternator & Dec
| 12***44 | Control Group-Governor | 1 |
| 32***31 | Conversion Group-Alternator & Dec | 1 |
| 8C***54 | Cap-Receptacle | 1 |
204-7949 Sensor Gp-Position
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
| 20***49 | Sensor Group-Position; -Throttle | 1 |
194-6725 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***25 | Sensor Group-Pressure; -Engine Oil | 1 |
167-1709 Sensor Gp-Pressure
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 16***09 | Sensor Group-Pressure; -Injection Actuation Oil | 1 |
| 9X***13 | Sleeve (Order By cm)(Use As Required) | 0 |
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 |
194-6724 Sensor Gp-Pressure
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 19***26 | Harness As-Sensor; (16-18 Ga Wire)(Engine Oil Temperature) | 3 |
| 19***24 | Sensor Group-Pressure; -Air Inlet Manifold | 1 |
161-9931 Sensor Gp-Pressure
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 16***31 | Sensor Group-Pressure; -Atmospheric | 1 |
| 18***36 | Socket-Connector; (16-Ga To 18-Ga) | 3 |
129-6628 Sensor Gp-Speed
| 10***13 | Seal; (3 Pin Plug) | 1 |
| 12***28 | Sensor Group-Speed; -Engine Speed/Timing | 1 |
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
265-9033 Sensor Gp-Speed
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 2 |
| 19***26 | Harness As-Sensor; (16-18 Ga Wire)(Engine Oil Temperature) | 3 |
| 19***27 | Harness As-Sensor; (14-Ga Wire)(Engine Oil Temperature) | 3 |
273-5041 Sensor Gp-Speed
| 11***66 | Seal-O-Ring | 1 |
| 13***07 | Washer; (21.1x28.1x0.9-mm Thk) | 1 |
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
106-0735 Sensor Gp-Temperature
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 10***35 | Sensor Group-Temperature; -Engine Oil | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
102-2240 Sensor Gp-Temperature
| 10***40 | Sensor Group-Temperature; -Output Transfer Gear Oil | 1 |
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
100-4417 Switch Gp-Flow
| 10***17 | Switch Group-Flow; -Engine Coolant | 1 |
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 0 |
| 17***08 | Switch Group-Flow; -Engine Coolant | 1 |
131-3275 Wiring Gp-Engine
| 0S***88 | Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter | 1 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 1 |
| 0S***20 | Bolt--Customer Grounding Bolt | 1 |
109-0401 Wiring Gp-Unit Injector
| 03***34 | Seal-O-Ring | 1 |
| 10***61 | Clip | 1 |
| 10***01 | Wiring Group-Unit Injector | 1 |
Engine Arrangement
213-4483 Conversion Ar-Engine
| 21***91 | Engine Ar | 1 |
| 21***83 | Conversion Ar-Engine | 1 |
| 32***31 | Conversion Group-Alternator & Dec | 1 |
212-6991 Engine Ar
| 10***17 | Switch Group-Flow; -Engine Coolant | 1 |
| 10***52 | Cylinder Head Group | 1 |
| 10***74 | Valve Mechanism Group | 1 |
322-7933 Installation Gp-Engine
| 13***60 | Filter Group-Fuel | 1 |
| 13***99 | Shield Group-Manifold | 1 |
| 14***21 | Fumes Disposal Group | 1 |
Fuel System
126-9544 Control Gp-Governor
| 12***33 | Pedal | 2 |
| 12***34 | Plate As | 2 |
| 12***14 | Pin | 2 |
180-6644 Drive Gp-Unit Inj Hyd Pump
| 03***01 | Bolt; --To Reverse Shaft Bearing Retainer | 2 |
| 0S***18 | Bolt; (5/16-18x1-In)(Hydraulic Pump) | 2 |
| 12***40 | Plate | 1 |
125-3431 Drive Gp-Unit Inj Hyd Pump
| 11***35 | Pin | 1 |
| 12***31 | Drive Group-Unit Inj Hydraulic Pump | 1 |
| 18***44 | Drive Group-Unit Inj Hydraulic Pump | 1 |
130-2960 Filter Gp-Fuel
| 12***91 | Base As | 1 |
| 12***72 | Filter As-Water Sep & Fuel | 1 |
| 12***75 | Bowl As-Water Collection; (Water Separator, Fuel Filter) | 1 |
232-1183 Injector Gp-Fuel
| 11***98 | Adapter-Injection | 1 |
| 11***22 | Seal-Rectangular | 1 |
| 13***69 | Bolt-Socket Head | 2 |
232-1168 Injector Gp-Fuel
| 11***98 | Adapter-Injection | 1 |
| 11***22 | Seal-Rectangular | 1 |
| 13***69 | Bolt-Socket Head | 2 |
198-7912 Injector Gp-Fuel
| 11***98 | Adapter-Injection | 1 |
| 11***22 | Seal-Rectangular | 1 |
| 13***69 | Bolt-Socket Head | 2 |
166-5985 Kit-Compensator
| 16***85 | Kit-Compensator | 1 |
138-6256 Kit-Seal -Unit Injector Hydraulic Pump
| 03***53 | Seal-O-Ring; (08.92mm Id) | 3 |
| 03***27 | Seal-O-Ring; (19.18mm Id) | 2 |
| 03***39 | Seal-O-Ring (Id=9.25mm) | 1 |
131-3273 Lines Gp-Fuel Filter
| 03***33 | Seal-O-Ring; (12.42mm Id) | 4 |
| 0L***70 | Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case | 1 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 4 |
121-4034 Lines Gp-Injector Hyd Pump
| 0L***43 | Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender | 2 |
| 0S***88 | Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter | 1 |
| 10***02 | Tube As | 1 |
126-7292 Pump & Mtg Gp-Unit Inj Hyd
| 03***33 | Seal-O-Ring; (12.42mm Id) | 1 |
| 0L***70 | Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case | 1 |
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 4 |
206-2630 Pump Gp-Fuel Injection
| 10***26 | Clamp-Injector | 1 |
| 11***21 | Seal-Rectangular | 2 |
| 11***08 | Elbow-Injector | 1 |
235-2024 Pump Gp-Unit Injector Hyd
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 4 |
| 11***20 | Coupling | 1 |
| 14***50 | Pump Group-Fuel Transfer | 1 |
235-2026 Pump Gp-Unit Injector Hyd
| 03***39 | Seal-O-Ring (Id=9.25mm) | 2 |
| 03***42 | Seal-O-Ring; (11.89mm Id) | 3 |
| 13***05 | Gasket-Housing | 1 |
225-0567 Pump Gp-Unit Injector Hyd
| 10***77 | Valve Group-Solenoid; -Pressure Control | 1 |
| 13***52 | Seal-O-Ring | 1 |
| 13***09 | Fitting | 2 |
225-0568 Pump Gp-Unit Injector Hyd
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 4 |
| 11***20 | Coupling | 1 |
| 14***50 | Pump Group-Fuel Transfer | 1 |
282-1915 Valve Gp-Check
| 03***33 | Seal-O-Ring; (12.42mm Id) | 1 |
| 28***15 | Valve Group-Check; -Fuel | 1 |
| 6V***89 | Seal-O-Ring (Id=19.18mm) | 1 |
102-7535 Valve Gp-Check
| 03***33 | Seal-O-Ring; (12.42mm Id) | 1 |
| 10***35 | Valve Group-Check; -Fuel Return Port | 1 |
| 6V***89 | Seal-O-Ring (Id=19.18mm) | 1 |
161-2309 Valve Gp-Fuel
| 03***43 | Seal-O-Ring | 1 |
| 10***06 | Seal-O-Ring (10.52mm Id) | 1 |
| 10***85 | Seal-O-Ring (6.07mm Id) | 2 |
190-0016 Valve Gp-Fuel
| 03***53 | Seal-O-Ring; (08.92mm Id) | 3 |
| 10***77 | Valve Group-Solenoid; -Pressure Control | 1 |
| 19***16 | Valve Group-Fuel | 1 |
165-1536 Valve Gp-Pressure Control
| 03***27 | Seal-O-Ring; (19.18mm Id) | 2 |
| 03***28 | Seal-O-Ring | 1 |
| 10***03 | Seal-O-Ring; (7.65mm Id) | 1 |
107-0677 Valve Gp-Solenoid
| 03***28 | Seal-O-Ring | 1 |
| 03***39 | Seal-O-Ring (Id=9.25mm) | 1 |
| 10***77 | Valve Group-Solenoid; -Pressure Control | 1 |
Lubrication System
119-8583 Fastener Gp-Oil Pump Mounting -Engine
| 0L***43 | Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender | 1 |
| 0S***19 | Bolt,Machine Gear Retaining Part Of Kit P/N 1w***46 | 2 |
| 11***83 | Fastener Group-Oil Pump Mounting; -Engine | 1 |
125-8280 Filler Gp-Engine Oil
| 0S***88 | Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter | 1 |
| 12***81 | Tube As | 1 |
| 12***80 | Filler Group-Engine Oil | 1 |
4n-2357 Filter Gp-Engine Oil
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 4 |
| 1R***08 | Filter As-Engine Oil; (Advanced Efficiency)(High Efficiency) | 2 |
| 2P***03 | Base As-Oil Filter; (Engine) | 2 |
140-7821 Fumes Disposal Gp
| 11***48 | Bracket | 1 |
| 13***57 | Tube | 1 |
| 13***13 | Tube-Disposal | 1 |
131-3264 Gauge Gp-Oil Level (Dipstick) -Engine
| 06***39 | Seal-O-Ring | 1 |
| 0L***51 | Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold | 1 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 1 |
122-1790 Lines Gp-Engine Oil
| 0L***51 | Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold | 1 |
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 2 |
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 2 |
131-3265 Lines Gp-Filter
| 06***40 | Seal-O-Ring (Id=37.69mm) | 4 |
| 0L***70 | Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case | 1 |
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 4 |
131-3271 Lines Gp-Turbocharger Oil
| 0L***70 | Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case | 1 |
| 0S***08 | Bolt-Support To Starting Engine Timing Gear Housing | 2 |
| 10***34 | Grommet | 1 |
116-1980 Pump Gp-Engine Oil
| 10***82 | Shaft As-Pump Drive | 1 |
| 10***73 | Shaft As-Idler | 1 |
| 11***79 | Body As-Oil Pump | 1 |
Power Train
141-4109 Core Gp-Oil Cooler
| 14***09 | Core Group-Oil Cooler; -Brake, Frame Mount-Transmission, Engine Mount-Tc, Bk, Hoist, Engine Mount | 1 |
| 8T***64 | Plug-Pipe; (1/8-27-Thd)(Cylinder Head) | 2 |
Service Equipment And Supplies
122-9798 Plate & Film Gp
| 12***98 | Plate & Film Group | 1 |
| 3N***90 | Plate Serial Number; On R.H. Rear Bank Of Cylinder Block As Viewed From Rear Of Engine | 1 |
Water System
137-1339 Pump Gp-Water
| 0S***91 | Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***82 | 1 |
| 10***30 | Bearing As-Roller | 1 |
| 11***21 | Plug-Felt; (Water Pump Housing) | 1 |
4n-5837 Pump Gp-Water
| 10***49 | Adapter-Inlet | 1 |
| 11***79 | Seal-O-Ring | 1 |
| 11***80 | Seal-O-Ring | 1 |
Frequently asked questions
What engines power the Caterpillar 657E?
The tractor is powered by a Cat 3412E engine, while the scraper unit utilizes a Cat 3408E engine.
What is the approximate operating weight of the loaded machine?
The approximate operating weight when loaded is 159,226 lb (72,224 kg).
Which model replaced the 657E in the scraper lineup?
The 657G is a subsequent model in the series.
What 657E owners discuss
What are the primary engine configurations and power outputs for the 657E tractor and scraper?
The 657E tractor utilizes a Cat 3412E engine, while the scraper is equipped with a 3408E engine. Tractor gross power is rated at 577 hp (430 kW) for gears 1-2 and 632 hp (472 kW) for gears 3-8. The scraper engine provides 418 hp (312 kW) gross power. Flywheel power for the tractor/scraper combination is 451 kW (605 hp) / 328 kW (440 hp).
What transmission features are standard on the 657E powertrain?
The machine uses an eight-speed power shift transmission with automatic, on-the-go shifting. Key controls include Top Gear Control to regulate haul road speeds and Neutral Coast Inhibitor Control to prevent shifting into neutral at speeds exceeding 8.1 km/h (5 mph). The system also features Electronic Programmable Transmission Control (EPTC II) for recording current and intermittent faults.
What hydraulic or braking components are available to manage heavy loads and descent?
An optional hydraulic retarder is available to extend brake life during severe downhill slope operations. The steering system uses a hydraulic servo-steering design for low-effort maneuverability. Additionally, the machine features an electronically controlled cushion hitch with nitrogen-over-oil accumulators to dampen road shocks.
What maintenance or protection features are integrated into the 657E engine and chassis?
Laminated Thermo-Shield is used to reduce exposed engine surface temperatures, cooling the compartment and extending hose and wiring life. The scraper driveline guard protects the output case, differential, and ejector cylinder. For serviceability, engine service points are grouped on the right side, and a radiator with a folded core allows individual modules to be replaced.
What electrical or sensor-related issues should be monitored in Caterpillar heavy machinery?
Electrical instability is a common issue, often caused by moisture intrusion in connectors, loose/corroded grounds, or battery deterioration. In modern systems, voltage loss under load can cause the ECM to behave erratically. The 657E features an Electronic Monitoring System that provides three-level warnings for machine system checks.
What should be checked when inspecting a used 657E for purchase?
Verify the exact serial-prefix specification sheet and installed attachment package. Inspect the condition of the wiring harness and hose assemblies, specifically looking for 'jump-over' lines on draft arms that can reduce hydraulic efficiency. Check for any signs of oil contamination; milky oil indicates coolant leaks through a head gasket. Have your dealer verify the machine build date via the official SIS database.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Serial-range & configuration variants
This page covers the Caterpillar 657E. Related factory variants of the same model family:
657E
Need a specific 657E part?
Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.