Caterpillar 561C
Caterpillarpipelayer(no series)

Caterpillar 561C

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar 561C is a specialized heavy-duty pipelayer designed for sideboom operations in pipeline construction. This machine class features an elevated sprocket design to provide stability during heavy lifts, typically supporting a lifting capacity of approximately 18,145 kg (40,000 lb). Depending on the specific configuration and engine series, the 561C may utilize a Caterpillar 3126B or D333 engine. The machine's operating weight varies by configuration but is documented around 16,851 kg (37,150 lb), with dimensions such as length and width often centered near 12 ft 6 in (0.15 m) and 10 ft 6 in (0.15 m) respectively.

Across its production generations, the 561C evolved from purely mechanical controls toward more advanced hydraulic configurations, including specialized kits for full hydraulic control conversion. This evolution makes the 561C a significant fixture in the used equipment market, as many units are sought after for their robust chassis and ability to be retrofitted with modern hydraulic systems. Its durability and the availability of remanufactured components ensure it remains a viable choice for heavy-duty pipeline work where high lifting capacity and structural integrity are required.

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 561C specifications

Engine

ModelCaterpillar D333
Net Power93 HP
Displacement8.6 L
Cylinders6
Fuel TypeDiesel

Weights

Operating Weight14,742 kg (32,500 lb)
Shipping Weight15,921 kg (35,100 lb)

Dimensions

Transport Length3.2 m (10' 6")
Transport Width3.2 m (10' 6")
Transport Height3.05 m (10')
Track Gauge1.88 m (74")

Performance

Lifting Capacity18,145 kg (40,000 lb)
Transmission Speeds5 Forward – 4 Reverse

Service capacities (summary)

Hydraulic Fluid TypeCat HYDO Advanced
Engine Oil TypesCat DEO, Cat DEO-ULS

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

561C fluids & capacities

SystemCapacityRecommended fluid
engine crankcase (with filter)not specifiedCat DEO or Cat DEO-ULS (if Tier 4/aftertreatment present); SAE 10W-30 preferred for ambient temperatures between -18°C (0°F) and 40°C (104°F). Use highest viscosity meeting cold start requirements; use SAE 50 for hot climates only.
transmission/powertrain compartmentsnot specifiedCat TDTO (Transmission/Drive Train Oil); use Cat TDTO Cold Weather for operations below -25°C.
final drives (each)not specifiedCat TDTO
hydraulic system and tanknot specifiedCat HYDO Advanced; use Cat HYDO Advanced 10 for SAE 10W (cold to moderate) or Cat HYDO Advanced 30 for SAE 30W (moderate to hot).
greasenot specifiedCat Multipurpose Grease (low-load/low-speed); Cat Advanced 3Moly Grease (medium-load/medium-speed); Cat Ultra 5Moly Grease (high-load/high-speed); Cat Arctic Platinum Grease (cold-weather).

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

Caterpillar 561C maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level and condition
  • Inspect hydraulic fluid level via sight glass
  • Verify coolant level and cap integrity
  • Drain water from fuel/water separator
  • Check air filter restriction indicator
  • Inspect track tension and shoe condition
Every 250 h
  • Change engine oil and filter
  • Grease all boom, stick, bucket, and swing points
  • Drain fuel filter/water separator
  • Perform visual inspection of belts and hoses
  • Check air filter primary element
Every 500 h
  • Replace fuel filter
  • Replace hydraulic return filter
  • Perform battery service and terminal check
  • Conduct detailed undercarriage inspection
  • Test coolant SCA levels
Every 1,000 h
  • Perform hydraulic oil sample analysis (S.O.S)
  • Service final drive oil
  • Inspect turbocharger for leaks or play
  • Check ROPS bolt torque
  • Measure undercarriage wear
Every 2,000 h
  • Change hydraulic system oil
  • Perform coolant flush and replace
  • Service transmission system
  • Conduct comprehensive structural inspection
  • Evaluate major components

Servicing the 561C beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize Caterpillar S.O.S Services to monitor engine oil, hydraulic fluid, and coolant. Analyze engine oil for wear metals like iron or copper and contaminants such as silicon from dirt ingestion. For hydraulic systems, track particle counts and viscosity changes to prevent pump failure. Regular coolant analysis is critical to detect pH shifts or SCA depletion before internal corrosion or liner pitting occurs.

Corrective & Common Repairs

Address frequent hydraulic failures by replacing return filters every 500 hours to prevent contamination-driven damage to valves and cylinders. Monitor the engine for fuel dilution or soot loading, which can necessitate oil changes. If electrical instability occurs, inspect the wiring harness and ground connections. Ensure all pins and bushings are inspected regularly to prevent excessive play in the boom and attachment points.

Overhaul & Rebuild Points

Plan for major component evaluations during 2,000-hour intervals. Key rebuild focus areas include the transmission service, hydraulic oil replacement, and a comprehensive structural inspection of boom welds. When performing engine overhauls, evaluate the turbocharger and fuel injectors for performance degradation. For the undercarriage, use precise measurements to determine if sprockets or track shoes require replacement versus simple adjustment.

Seasonal & Environment Servicing

In high-dust or quarry environments, check air filters daily and clean radiator fins frequently to prevent overheating. For machines operating in cold climates, utilize Caterpillar Arctic Platinum Grease and appropriate cold-weather engine oils. In saltwater or high-moisture areas, prioritize battery terminal inspections and check for any signs of corrosion on the chassis or electrical connections to maintain operational safety.

561C common service parts

Part numberPart
1P-2299Filter As-FuelCheck fitment →
4N-5121Primary Fuel FilterCheck fitment →
5S-9665Fuel FilterCheck fitment →

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

561C fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
110-0Engine Coolant Temperature — Above NormalLow coolant level or thermostat failureInspect cooling system and refill coolant
110-3Engine Coolant Temp Sensor — Voltage HighOpen circuit or sensor failureCheck wiring and replace sensor if faulty
174-3Engine Fuel Temperature — Voltage Above NormalOpen circuit in sensor wiringInspect harness and replace sensor if necessary
190-8Engine Speed — Abnormal FrequencySpeed sensor air gap, sensor failure, or tone ring damageCheck sensor gap and test speed sensor/tone ring
41-38-Volt DC Supply — Voltage Above NormalShort to power on 8V reference circuitInspect sensors sharing the 8V supply and isolate fault
41-48-Volt DC Supply — Voltage Below NormalShort to ground on 8V reference circuitDisconnect sensors one at a time to locate short
E360Engine Coolant Temperature — HighLow coolant, failed thermostat, or water pump issueDiagnose cooling system; do not operate until resolved
E361Engine Coolant Temperature — Very High (Shutdown)Severe cooling system failurePerform full cooling system diagnosis; engine shutdown required

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

561C attachments & work tools

Boom and Lifting Attachments

Standard boom configuration features a 15 ft (4.57 m) length. Lift capacity for this class is rated at 40,000 lb (18,145 kg). Available configurations include Midwestern M561 sideboom attachments.

Winches and Controls

Equipped with dual winches or single speed boom winches depending on configuration. Control options range from manual lever systems to hydraulic conversions for precise positioning of the load line.

Mounting and Conversion Systems

Mechanical 561 models can utilize CPX or CPC-561 Hydraulic Kits for rapid conversion to fully hydraulic-controlled sideboom operation. These kits allow for simultaneous, low-effort control of attachments.

Undercarriage and Ground Engagement

Standard track width is 20 in (508 mm). Grouser pad options include single grouser pads or double bar pads depending on the specific build or conversion.

Factory Options and Guarding

Notable factory or aftermarket configurations include OROPS (Operator Refurbished Open Roll-Over Protective Structure) and noise-proof engine enclosures. Rear drawbar options are available for operational versatility.

All 561C assemblies by section

Every catalogued assembly group for the Caterpillar 561C. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Central Structure
Camshaft (2p6202 N/S)
2P***02Camshaft Group-Single; Single Camshaft Group1
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Cylinder Block Cover (2p6256 N/S)--Type 2
2P***56Cover Group; Cylinder Block Cover Group1
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4n5163 Cylinder Block Cover Group
4N***63Cover Group; Cylinder Block Cover Group1
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Cylinder Block Cover (2p6256 N/S)--Type 1
2P***56Cover Group; Cylinder Block Cover Group1
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Cylinder Block Cover (4n5164 N/S)
4N***64Cover Group-Cylinder Block; Cylinder Block Cover Group1
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Cylinder Block And Cover (2p6517 N/S)--Type 1
2P***17Cover Group-Cylinder Block; Cylinder Block Covers Group1
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Cylinder Block Cover (2p6517 N/S)--Type 2
2P***17Cover Group-Cylinder Block; Cylinder Block Covers Group1
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Cylinder Block Cover (4n8675 N/S)
4n7693 Crankshaft Assembly--Field Replacement
9s3057 Crankshaft Assembly--Field Replacement
Crankshaft Bearings And Thrust Plate Group
4S***81Bearing (.010 In. Undersize); Bearing (0.25 mm Undersize)7
4S***83Bearing (.020 Undersize); Bearing (.020 Undersize)7
4S***85Bearing (.030 In. Undersize); Bearing (0.76 mm Undersize)7
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Crankshaft (2p6222 N/S)
2P***22Crankshaft Group; Crankshaft Group1
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Crankshaft (2p6220 N/S)
2p6220 Crankshaft Group--Type 2
Crankshaft Seal (2p7309 N/S)
6n221 Crankshaft Seal Group
Crankshaft Seal (4n5028 N/S)
2p8776 Cylinder Block Assembly
Cylinder Block Cover (2p6558 N/S)
Cylinder Block (2p6558 N/S)
2p6560 Cylinder Block Group
2P***60Cylinder Block Group; Cylinder Block Group1
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Connecting Rod And Piston (2p6272 N/S)--6 Required
Connecting Rod And Piston (4n4028 N/S)--6 Required
4N***28Piston & Rod Group; Connecting Rod And Piston Group1
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Connecting Rod And Piston (9s8912 N/S)--6 Required
9S***12Piston & Rod Group; Connecting Rod And Piston Group1
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2p6224 Crankshaft Seal Group
2P***24Seal Group-Crankshaft; Crankshaft Seal Group1
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Crankshaft Seal (2p7308 N/S)
2p6223 Crankshaft Seal Group
2P***23Seal Group-Crankshaft; Crankshaft Seal Group1
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2p6483 Crankshaft Seal Group
2p6226 Crankshaft Seal Group
2P***26Seal Group-Crankshaft; Seal Group-Crankshaft1
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Crankshaft Seal (6n220 N/S)
Cooling System
2p6215 Engine Oil Cooler Group
2P***15Cooler Group-Engine Oil; Oil Cooler Group Engine1
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Engine Oil Cooler (2p7738 N/S)
2P***38Cooler Group-Engine Oil; Engine Oil Cooler Group1
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Transmission Oil Cooler (2p6510 N/S)
2P***10Cooler Group-Transmission Oil; Transmission Oil Cooler Group1
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Transmission Oil Cooler (2p6515 N/S)
2P***15Cooler Group-Transmission Oil; Transmission Oil Cooler Group1
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Transmission Oil Cooler (2p6508 N/S)
2P***08Cooler Group-Transmission Oil; Transmission Oil Cooler Group1
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Transmission Oil Cooler (2p7736 N/S)
2P***36Cooler Group-Transmission Oil; Transmission Oil Cooler Group1
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Engine Oil Cooler (4n3719 N/S)
Housing And Regulator (2p8174 N/S)
2P***74Housing & Regulator Group; Housing And Regulator Group1
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Housing And Regulator (3n3271 N/S)
3N***71Housing & Regulator Group; Housing And Regulator Group1
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Housing And Regulator (2p8176 N/S)
Housing And Regulator (2p8170 N/S)
Housing And Regulator (2p8172 N/S)
2P***72Housing & Regulator Group; Regulator And Housing Group1
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Housing And Regulator (2p8171 N/S)
2P***71Housing & Regulator Group; Housing And Regulator Group1
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Housing And Regulator (2p8177 N/S)
Housing And Regulator Gp(2p8175 N/S)
2P***75Housing & Regulator Group; Regulator And Housing Group1
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Housing And Regulator (2p8173 N/S)
2P***73Housing & Regulator Group; Regulator And Housing Group1
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Housing And Regulator (2p8178 N/S)
2P***78Housing And Regulator; Housing And Regulator Group1
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Housing And Regulator (4n3712 N/S)
2p7740 Water Lines Group--Elbow
2P***40Lines Group-Water; Water Lines Group--Elbow1
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Water Lines (2p7730 N/S)
2P***30Lines Group-Water; Water Lines Group1
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2p7728 Water Lines Group--Elbow
2P***28Lines Group-Water; Water Lines Group (Elbow)1
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2p6188 Water Lines Group
2P***88Lines Group-Water; Water Lines Group1
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Water Lines (2p7728 N/S)--Elbow
2P***28Lines Group-Water; Water Lines Group (Elbow)1
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2p7741 Water Lines Group--Pipe
2P***41Lines Group-Water; Water Lines Group-- Pipe1
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2p662 Water Pump Group
2P***62Pump Group-Water; Water Pump Group1
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2p661 Water Pump Group
2P***61Pump Group-Water; Water Pump Group1
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Transmission Oil Cooler (4n9068 N/S)
4n6646 Transmission Oil Cooler Group
4N***46Transmission Oil Cooler Group; Oil Cooler Group Transmission1
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Transmission Oil Cooler (4n6646 N/S)
4N***46Transmission Oil Cooler Group; Oil Cooler Group Transmission1
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Electrical System
2p1204 Alternator Group--24 Volt, 19 Ampere
2p7836 Alternator Group--24 Volt--19 Ampere
2P***36Alternator Group-Charging; Charging Alternator Group1
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5s9088 Alternator Assembly--24 Volt, 50 Ampere--Part 1 Of 2
Alternator (2p7835 N/S)--24 Volt--50 Ampere
Alternator (4n5090 N/S)--24 Volt, 19 Ampere
5s9088 Alternator Assembly--24 Volt, 50 Ampere--Part 2 Of 2
2p7836 Alternator Group--24 Volt, 19 Ampere
2P***36Alternator Group-Charging; Charging Alternator Group1
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4n3180 Electric Starting Motor Group--Delco-Remy--24 Volt--Part 2 Of 2
2p6162 Electric Starting Motor Group--Prestolite--24 Volt--Part 1 Of 2
2p6162 Electric Starting Motor Group--Prestolite--24 Volt--Part 2 Of 2
4n3180 Electric Starting Motor Group--Delco-Remy--24 Volt--Part 1 Of 2
5s8501 Glow Plug Group
5S***01Glow Plug Group; Glow Plug And Wiring Group1
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Solenoid Shut-Off (7s9480 N/S)--24 Volt
7S***80Shut-Off Group; Solenoid Shut-Off Group1
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9s7976 Solenoid Switch Assembly
7s3622 Electric Starting Motor Group--24 Volt--Type 2
7S***22Starting Motor Group-Electric; Electric Starting Motor Group1
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2p2502 Electric Starting Motor Group--Delco-Remy--24 Volt--Part 1 Of 2
4n7752 Electric Starting Motor Group--Prestolite--24 Volt--Part 2 Of 2
4N***52Starting Motor Group-Electric; Electric Starting Motor Group --Prestolite1
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Electric Starting Motor (7s5410 N/S)--24 Volt
7S***10Starting Motor Group-Electric; Electric Starting Motor Group1
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2p2502 Electric Starting Motor Group--Delco-Remy--24 Volt--Part 2 Of 2
7s3622 Electric Starting Motor Group--24 Volt--Type 1
7S***22Starting Motor Group-Electric; Electric Starting Motor Group1
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3p6 Electric Starting Motor Group--Prestolite--24 Volt--Part 2 Of 2
3P***06Starting Motor Group-Electric; Electric Starting Motor Group-Prestolite1
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3p6 Electric Starting Motor Group--Prestolite--24 Volt--Part 1 Of 2
3P***06Starting Motor Group-Electric; Electric Starting Motor Group-Prestolite1
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4n7752 Electric Starting Motor Group--Prestolite--24 Volt--Part 1 Of 2
4N***52Starting Motor Group-Electric; Electric Starting Motor Group --Prestolite1
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4n3182 Electric Starting Motor Group--Delco-Remy--24 Volt--Part 2 Of 3
4N***82Starting Motor Group-Electric; Electric Starting Motor Group-- Delco-Remy1
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Electric Starting Motor (7s4090 N/S)--24 Volt
4n3182 Electric Starting Motor Group--Delco-Remy--24 Volt--Part 3 Of 3
4N***82Starting Motor Group-Electric; Electric Starting Motor Group-- Delco-Remy1
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4n3182 Electric Starting Motor Group--Delco-Remy--24 Volt--Part 1 Of 3
4N***82Starting Motor Group-Electric; Electric Starting Motor Group-- Delco-Remy1
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1p9181 Solenoid Switch Assembly
6n5123 Solenoid Switch Assembly--24 Volt
4n8985 Coolant Flow Switch Group
Engine Arrangement
8s3875 Arrangement
2P***91Engine Ar1
2P***62Normalizing Arrangement; (See 3306 Engine 3n1 To 3n24132 Inclusive)1
8S***75Arrangement1
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8s3874 Arrangement
2P***90Engine Ar1
2P***62Normalizing Arrangement; (See 3306 Engine 3n1 To 3n24132 Inclusive)1
8S***74Arrangement1
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4n7364 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump Group-Water; Water Pump Group1
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4n7372 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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4n7361 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump Group-Water; Water Pump Group1
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4n7373 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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4n7363 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump Group-Water; Water Pump Group1
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4n3571 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump Group-Water; Water Pump Group1
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4n7365 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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4n7366 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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2p6808 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump Group-Water; Water Pump Group1
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4n4993 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump Group-Water; Water Pump Group1
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2p6788 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***74Torque Control1
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2p6793 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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2p6798 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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2p6794 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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2p6804 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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2p6810 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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4n4994 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump Group-Water; Water Pump Group1
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4n7367 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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2p6796 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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2p6811 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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6n0488 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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2p6801 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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2p6790 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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6n0484 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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2p6800 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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4n5359 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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4n6521 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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2p6806 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump Group-Water; Water Pump Group1
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2p6797 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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2p6802 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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4n4439 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***61Pump Group-Water; Water Pump Group1
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2p6791 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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2p6792 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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2p6807 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump Group-Water; Water Pump Group1
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4n7374 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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4n4463 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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2p6789 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***74Torque Control1
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2p6805 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump Group-Water; Water Pump Group1
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2p6799 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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6n0482 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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2p6803 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***80Turbocharger1
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6n0486 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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2p6795 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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2p6809 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
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2p6812 Engine Ar
1P***45Engine Decelerator Control1
1P***46Fuel Pump Housing And Governor1
1P***40Lifting Group; Lifting Eye Group1
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1p32 Arrangement
1P***32Engine Arrangement1
2P***93Engine Ar1
2P***73Normalizing Arrangement; Normalizing Arrangement Engine Parts1
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4n7371 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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4n7377 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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4n8132 Engine Arrangement
2P***88Engine Ar1
4N***36Refrigerant Compressor Arrangement1
4N***61Basic Engine Arrangement1
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2p8947 Arrangement
2P***04Engine Ar1
2P***43Trunnion Group1
2P***47Engine Arrangement1
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2p9637 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***52Turbocharger Group1
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4n7376 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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3p0075 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***52Turbocharger Group1
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1p9587 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***81Flywheel Group; Flywheel Group1
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4n7368 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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4n7370 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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2p9573 Normalizing Arrangement
2P***22Crankshaft Group; Crankshaft Group1
2P***24Seal Group-Crankshaft; Crankshaft Seal Group1
2P***73Manifold Group-Exhaust1
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2p9562 Normalizing Arrangement
2P***22Crankshaft Group; Crankshaft Group1
2P***73Manifold Group-Exhaust1
2P***46Air Lines Group1
See all parts with full part numbers in Heavy Parts AI →
This Chart Shows Various Vehicles Using 3306 Vehicular Engine Serial No. 3n1 To 3n24132 Followed By
Front Structure
Belt Tightener (2p9558 N/S)
4n6050 Front Housing Cover Group
Front Housing Cover (2p6528 N/S)
2P***28Cover Group-Front Housing; Front Housing Cover Group1
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Front Housing Cover (2p6529 N/S)
2P***29Cover Group-Front Housing; Front Housing Cover Group1
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4n5162 Front Housing Cover Group
4N***62Cover Group-Front Housing; Front Housing Cover Group1
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Damper (3p17 N/S)
Damper (4n4365 N/S)
Damper (4n3239 N/S)
Damper (4n3238 N/S)
Damper (2p7838 N/S)
Damper (2p2503 N/S)
2P***03Damper Group-Pulley & Cshft; Crankshaft And Pulley Damper Group1
See all parts with full part numbers in Heavy Parts AI →
Fan Drive (4n8537 N/S)
4N***37Drive Group-Fan; Fan Drive Group1
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2p7831 Fan Drive Group
2P***31Drive Group-Fan; Fan Drive Group1
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Support (2p7744 N/S)
Support (4n3506 N/S)
Fan Drive (3p18 N/S)
2p6498 Front Housing Fastener Group
2P***98Fastener Group-Front Housing; Front Housing Fastener Group1
See all parts with full part numbers in Heavy Parts AI →
4n5122 Front Housing Fastener Group
4N***22Fastener Group-Front Housing; Front Housing Fastener Group1
See all parts with full part numbers in Heavy Parts AI →
2p6211 Front Gear Group--Timing
2P***11Front Gear Group; Front Gear Group-Timing1
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Front Gear (2p7782 N/S)--Timing
Front Housing (2p6153 N/S)
2P***53Front Housing; Front Housing Group1
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2p9642 Front Gear Group--Timing
Front Gear (4n3271 N/S)--Timing
4N***71Gear Group-Front Timing; Front Timing Gear Group1
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Front Housing (2p9641 N/S)
2P***41Housing Group-Front; Front Housing Group1
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Pulley (2p8600 N/S)
Pulley (4n6048 N/S)
Pulley (2p8217 N/S)
Pulley (2p8213 N/S)
2P***13Pulley Group; Pulley Group (Crankshaft & Fan Drive)1
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Pulley (2p8158 N/S)
2P***58Pulley Group; Fan Drive Pulley Group1
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Pulley (4n9014 N/S)
Pulley (3p44 N/S)
Pulley (2p8595 N/S)
Pulley (2p8601 N/S)
Pulley (2p8599 N/S)
Pulley (4n3562 N/S)
4N***62Pulley Group-Crankshaft; Crankshaft Pulley Group1
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Pulley (2p8602 N/S)
Support (2p7750 N/S)
Support (2p7746 N/S)
Support (2p8856 N/S)
2P***56Support Group; Engine Support Group1
See all parts with full part numbers in Heavy Parts AI →
Support (2p7743 N/S)
Support (1p9586 N/S)
1P***86Support Group-Engine; Engine Support Group1
See all parts with full part numbers in Heavy Parts AI →
Support (2p7747 N/S)
2P***47Support Group-Engine; Engine Support Group1
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Support (2p7749 N/S)
2P***49Support Group-Engine; Engine Support Group1
See all parts with full part numbers in Heavy Parts AI →
Support (2p7745 N/S)
2P***45Support Group-Engine; Engine Support Group1
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Support (2p7751 N/S)
2P***51Support Group-Engine; Engine Support Group1
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Support (2p7748 N/S)
2P***48Support Group-Engine; Engine Support Group1
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Support (2p7752 N/S)
2P***52Support Group-Engine; Engine Support Group1
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Support (4n6051 N/S)
4N***51Support Group-Engine; Engine Support Group1
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Support (2p7753 N/S)
2P***53Support Group-Engine; Front Engine Support Group1
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2p8943 Trunnion Group
2p6246 Trunnion Group
Fuel System And Governor
6n301 Governor And Fuel Injection Pump Group
6N***01Governor And Fuel Injection Pump Group1
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6n297 Governor And Fuel Injection Pump Group
6N***97Governor And Fuel Injection Pump Group1
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6n300 Governor And Fuel Injection Pump Group
6N***00Governor And Fuel Injection Pump Group; Governor And Fuel Injection Pump Group1
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6n312 Governor And Fuel Injection Pump Group
6N***12Governor And Fuel Injection Pump Group1
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6n308 Governor And Fuel Injection Pump Group
6N***08Governor And Fuel Injection Pump Group1
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6n293 Governor And Fuel Injection Pump Group
6N***93Governor And Fuel Injection Pump Group1
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6n298 Governor And Fuel Injection Pump Group
6N***98Governor And Fuel Injection Pump Group1
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Governor And Fuel Injection Pump (6n1241 N/S)--Type 1
6N***41Governor And Fuel Injection Pump Group1
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6n296 Governor And Fuel Injection Pump Group
6N***96Governor And Fuel Injection Pump Group1
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6n303 Governor And Fuel Injection Pump Group
6N***03Governor And Fuel Injection Pump Group1
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Governor And Fuel Injection Pump (7s6740 N/S)
7S***40Governor And Fuel Injection Pump Group1
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6n306 Governor And Fuel Injection Pump Group
6N***06Governor And Fuel Injection Pump Group1
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6n311 Governor And Fuel Injection Pump Group
6N***11Governor And Fuel Injection Pump Group1
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6n304 Governor And Fuel Injection Pump Group
6N***04Governor And Fuel Injection Pump Group1
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Governor And Fuel Injection Pump (6n1241 N/S)--Type 2
6N***41Governor And Fuel Injection Pump Group1
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6n295 Governor And Fuel Injection Pump Group
6N***95Governor And Fuel Injection Pump Group; Governor And Fuel Injection Pump Group1
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4n4751 Tachometer Drive Group
Tachometer Drive (6n1399 N/S)
Accessory Drive (2p7712 N/S)
Accessory Drive (3n3287 N/S)
9n867 Fuel Ratio Control Group
6n4654 Fuel Ratio Control Group
Fuel Ratio Control (6n3047 N/S)
6n3630 Torque Control Group
Torque Control (6n3586 N/S)
6n3609 Torque Control Group
Torque Control (4n9240 N/S)
Governor Cover (4n4510 N/S)
4N***10Cover Group-Governor; Governor Cover Group1
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9s4488 Tachometer Drive Group
Tachometer Drive (4n7249 N/S)
Engine Decelerator Control (1p45 N/S)
Engine Decelerator Control (6n1239 N/S)
6N***39Engine Decelerator Control Group1
See all parts with full part numbers in Heavy Parts AI →
7l261 Fuel Filter And Priming Pump Group
1p2299 Fuel Filter Assembly
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
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4n3303 Fuel Filter Group
4N***03Filter Group-Fuel; Fuel Filter Group1
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Fuel Filter (4n9882 N/S)
4N***82Filter Group-Fuel; Fuel Filter Group1
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4n1981 Fuel Filter Group
8h4681 Primary Fuel Filter Group
8H***81Filter Group-Primary Fuel; Primary Fuel Filter Group1
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Primary Fuel Filter (1p6835 N/S)
1P***35Filter Group-Primary Fuel; Primary Fuel Filter Group1
See all parts with full part numbers in Heavy Parts AI →
Fuel Filter (5s9665 N/S)
Fuel Filter (6n1750 N/S)
Fuel Filter (8s9311 N/S)
5s9666 Fuel Filter Group
Fuel Filter (4n3599 N/S)
Fuel Filter Lines (6n1210 N/S)
6N***10Fuel Filter Lines; Fuel Filter Lines Group1
See all parts with full part numbers in Heavy Parts AI →
Fuel Injection Lines (6n1057 N/S)
6N***57Fuel Injection Lines; Fuel Injection Lines Group1
See all parts with full part numbers in Heavy Parts AI →
Fuel Injection Lines (2p7458 N/S)
Fuel Injection Lines (2p7456 N/S)
Fuel Injection Lines (4n8007 N/S)
Fuel Injection Lines (2p7457 N/S)
Fuel Injection Lines (4n3376 N/S)
4N***76Fuel Injection Lines; Fuel Injection Lines Group1
See all parts with full part numbers in Heavy Parts AI →
Fuel Injection Lines (2p7459 N/S)
Fuel Injection Lines (6n1637 N/S)
Fuel Injection Lines (4n6033 N/S)
Fuel Injection Lines (4n9947 N/S)
Fuel Injection Lines (4n3649 N/S)
Fuel Injection Lines (6n572 N/S)
6N***72Fuel Injection Lines Group; Fuel Injection Lines Group1
See all parts with full part numbers in Heavy Parts AI →
Fuel Priming Pump (5s2100 N/S)
Fuel Priming Pump (2p7709 N/S)
7s1251 Fuel Priming Pump Group--Type 1
7s1251 Fuel Priming Pump Group--Type 2
Governor And Fuel Injection Pump (5s9075 N/S)
Governor And Fuel Injection Pump (7s9337 N/S)
Governor And Fuel Injection Pump (8s110 N/S)
Governor And Fuel Injection Pump (9s5785 N/S)
Governor And Fuel Injection Pump (5s9571 N/S)
Governor And Fuel Injection Pump (9s5979 N/S)
Governor And Fuel Injection Pump (1p46 N/S)
9s2296 Governor And Fuel Injection Pump Group
9S***96Fuel Pump Housing And Governor Group1
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5s9076 Fuel Pump Housing Group
Fuel Ratio Control (8s8951 N/S)
8S***51Fuel Ratio Control; Air Fuel Ratio Control Group1
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Fuel Ratio Control (4n5223 N/S)
4n4900 Fuel Ratio Control Group
4n5063 Fuel Ratio Control Group
Fuel Transfer Pump (2p6859 N/S)
7l543 Fuel Transfer Pump Group (7l247 N/S)
4n4873 Fuel Transfer Pump Group (7s5108 N/S)
7s4430 Fuel Transfer Pump Group
4n4878 Fuel Transfer Pump Group (7l247 N/S)
7s5445 Fuel Transfer Pump Group (7s5108 N/S)
Governor And Fuel Injection Pump (6n261 N/S) -- Type 1
6n268 Governor And Fuel Injection Pump Group--Part 1 Of 2--Type 3
6n305 Governor And Fuel Injection Pump Group
6N***05Gov & Fuel Inj Pump Group; Governor & Fuel Injection Pump Group1
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Governor And Fuel Injection Pump (4n1836 N/S)--Part 2 Of 4--Type 2
6n299 Governor And Fuel Injection Pump Group
6N***99Gov & Fuel Inj Pump Group; Governor And Fuel Injection Pump Group1
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6n3472 Governor And Fuel Injection Pump Group
6n268 Governor And Fuel Injection Pump Group--Part 2 Of 2--Type 2
6n2840 Governor And Fuel Injection Pump Group--Type 2
6N***40Gov & Fuel Inj Pump Group; Governor & Fuel Injection Pump Group1
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Governor And Fuel Injection Pump (4n1836 N/S)--Part 3 Of 4--Type 1
Governor And Fuel Injection Pump (4n1836 N/S)--Part 4 Of 4--Type 2
Governor And Fuel Injection Pump (4n1836 N/S)--Part 1 Of 4--Type 3
Governor And Fuel Injection Pump (4n1836 N/S)--Part 1 Of 4--Type 1
Governor And Fuel Injection Pump (4n1836 N/S)--Part 3 Of 4--Type 3
4n1836 Governor And Fuel Injection Pump Group--Part 2 Of 4
Governor And Fuel Injection Pump (4n1836 N/S)--Part 2 Of 4--Type 3
Governor And Fuel Injection Pump (6n260 N/S)--Type 1
Governor And Fuel Injection Pump (4n1836 N/S)--Part 4 Of 4--Type 1
6n263 Governor And Fuel Injection Pump Group--Type 2
Governor And Fuel Injection Pump (6n2840 N/S) -- Type 1
6N***40Gov & Fuel Inj Pump Group; Governor & Fuel Injection Pump Group1
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Governor And Fuel Injection Pump (6n268 N/S)--Part 1 Of 2--Type 1
6n263 Governor And Fuel Injection Pump Group--Type 1
Governor And Fuel Injection Pump (4n1836 N/S)--Part 4 Of 4--Type 3
Governor And Fuel Injection Pump (4n1836 N/S)--Part 1 Of 4--Type 2
6n261 Governor And Fuel Injection Pump Group--Type 2
6n260 Governor And Fuel Injection Pump Group--Type 2
6n263 Governor And Fuel Injection Pump Group--Type 3
4n1836 Governor And Fuel Injection Pump Group--Part 1 Of 4
6n294 Governor And Fuel Injection Pump Group
6N***94Gov & Fuel Inj Pump Group; Governor And Fuel Injection Pump Group1
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Governor And Fuel Injection Pump (4n1836 N/S)--Part 3 Of 4--Type 2
4n1836 Governor And Fuel Injection Pump Group--Part 3 Of 4
4n1836 Governor And Fuel Injection Pump Group--Part 4 Of 4
6n268 Governor And Fuel Injection Pump Group--Part 1 Of 2--Type 2
6n268 Governor And Fuel Injection Pump Group--Part 2 Of 2--Type 3
Governor And Fuel Injection Pump (6n268 N/S)--Part 2 Of 2--Type 1
Governor And Fuel Injection Pump (4n1836 N/S)--Part 2 Of 4--Type 1
4n2844 Governor And Fuel Injection Pump Group
Governor And Decelerator Control (9s7053 N/S)
9S***53Governor And Decelerator Control1
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Governor And Fuel Injection Pump (6n256 N/S)
6N***56Governor And Fuel Injection Pump1
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Governor And Fuel Injection Pump (6n1261 N/S)
6N***61Governor And Fuel Injection Pump1
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Governor And Fuel Injection Pump (4n4673 N/S)
4N***73Governor And Fuel Injection Pump1
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9s6700 Governor Group--Part 2 Of 2--Type 2
7s9333 Governor Group--Part 1 Of 2--Type 1
9s6701 Governor Group--Part 1 Of 2--Type 2
8s9442 Governor Group--Part 1 Of 2--Type 1
8s6536 Governor Group--Part 2 Of 2--Type 1
1p47 Governor Group--Part 1 Of 2--Type 2
9s5740 Governor Group--Part 1 Of 2--Type 1
7s9333 Governor Group--Part 1 Of 2--Type 2
8s6536 Governor Group--Part 2 Of 2--Type 2
8s9442 Governor Group--Part 2 Of 2--Type 1
9s5740 Governor Group--Part 2 Of 2--Type 1
1p47 Governor Group--Part 2 Of 2--Type 2
9s6700 Governor Group--Part 1 Of 2--Type 2
8s6536 Governor Group--Part 1 Of 2--Type 3
1p47 Governor Group--Part 2 Of 2--Type 1
8s9442 Governor Group--Part 2 Of 2--Type 2
9s5740 Governor Group--Part 2 Of 2--Type 2
7s9332 Governor Group--Part 1 Of 2--Type 3
9s5740 Governor Group--Part 1 Of 2--Type 2
1p47 Governor Group--Part 1 Of 2--Type 1
9s6700 Governor Group--Part 2 Of 2--Type 1
7s9332 Governor Group--Part 2 Of 2--Type 2
7s9332 Governor Group--Part 1 Of 2--Type 2
7s9333 Governor Group--Part 2 Of 2--Type 2
7s9332 Governor Group--Part 2 Of 2--Type 1
9s6700 Governor Group--Part 1 Of 2--Type 1
9s6701 Governor Group--Part 2 Of 2--Type 2
9s6701 Governor Group--Part 1 Of 2--Type 1
8s6536 Governor Group--Part 1 Of 2--Type 2
8s6536 Governor Group--Part 1 Of 2--Type 1
7s9332 Governor Group--Part 2 Of 2--Type 3
9s6701 Governor Group--Part 2 Of 2--Type 1
8s9442 Governor Group--Part 1 Of 2--Type 2
7s9333 Governor Group--Part 2 Of 2--Type 1
8s6536 Governor Group--Part 2 Of 2--Type 3
7s9332 Governor Group--Part 1 Of 2--Type 1
8s6099 Torque Control Group--Type 2
Torque Control (8s6099 N/S) - Type 1
Torque Control (4n3650 N/S)
Torque Control (9l5382 N/S)
Torque Control (8s5042 N/S)--Type 1
8s5042 Torque Control Group--Type 2--Field Installation
Torque Control (9s9028 N/S)
Torque Control (9s5546 N/S) - Type 1
9s5546 Torque Control Group--Type 2
Torque Control (1p5007 N/S)
Torque Control (8s5050 N/S)
8l8682 Torque Control Group
Fuel Injection Lines (2p8916 N/S)
2P***16Lines Group-Fuel Injection; Fuel Injection Lines Group1
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4n8054 Fuel Injection Lines Group
4N***54Lines Group-Fuel Injection; Fuel Injection Lines Group1
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4n3336 Service Meter Group
4N***36Meter Group-Service; Service Meter Group1
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Service Meter (6n490 N/S)
6N***90Meter Group-Service; Service Meter Group1
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4n6656 Service Meter Group
4N***56Meter Group-Service; Service Meter Group1
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Primary Fuel Filter (4n5121 N/S)
9h2256 Pump Assembly
Fuel Priming Pump (4n3287 N/S)
4N***87Pump Group-Fuel Priming; Pump Group-Fuel Priming1
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Fuel Priming Pump (4n4314 N/S)
4N***14Pump Group-Fuel Priming; Fuel Priming Pump Group1
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Fuel Priming Pump (4n9625 N/S)
4N***25Pump Group-Fuel Priming; Fuel Priming Pump Group1
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7s4429 Fuel Transfer Pump Group
7S***29Pump Group-Fuel Transfer; Fuel Transfer Pump Group1
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4n4864 Fuel Transfer Pump Group
Governor And Fuel Injection Pump (4n4016 N/S)
Torque Control (9s3312 N/S)
Service Meter (8s6865 N/S)
9s8921 Service Meter Group
Service Meter (9s5141 N/S)
Service Meter (9s8923 N/S)
Service Meter (8s3688 N/S)
8S***88Service Meter; Service Meter Group1
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Service Meter (9s8732 N/S)
Service Meter (9s9978 N/S)
Service Meter (9s7993 N/S)
9s5730 Service Meter And Tachometer Drive Group
9S***30Service Meter And Tachometer Drive Group1
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Service Meter Drive (9s7127 N/S)
4n3554 Service Meter Drive Group
4n4025 Service Meter Group
4n4026 Service Meter Group
4N***26Service Meter Group; Service Meter Group1
See all parts with full part numbers in Heavy Parts AI →
Service Meter (4n3337 N/S)
9s7128 Service Meter Group
Service Meter (4n8064 N/S)
9l9345 Torque Control Group
2s9519 Torque Control Group
Torque Control (6n2922 N/S)
Torque Control (4n8924 N/S)--Type 1
Torque Control (4n8924 N/S)--Type 2
Torque Control (2p8592 N/S)
Torque Control (4n9302 N/S)
1p6474 Torque Control Group--Type 2
Torque Control (1p6474 N/S)
Torque Control (4n283 N/S)
Torque Control (6n453 N/S)
4n9193 Torque Control Group--Type 2
Torque Control (6n581 N/S)
Torque Control (6n534 N/S)
6n3610 Torque Control Group
Torque Control (4n9193 N/S) - Type 2
Torque Control (6n454 N/S)
Torque Control (4n9193 N/S)
Torque Control (6n509 N/S)
Intake And Exhaust System
2p1830 Air Compressor Group
Air Compressor (2p7798 N/S)
Air Compressor (2p9613 N/S)
2P***13Air Compressor Group; Air Compressor Group1
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2p7800 Air Compressor Group
Air Compressor (2p7795 N/S)
2P***95Air Compressor Group; Air Compressor Group1
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2p7794 Air Compressor Group
Air Compressor (2p7801 N/S)
2P***01Air Compressor Group; Air Compressor Group1
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2p7801 Air Compressor Group
2P***01Air Compressor Group; Air Compressor Group1
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Air Compressor (2p9614 N/S)
2p7798 Air Compressor Group
Air Compressor Lines (2p7799 N/S)
2P***99Air Compressor Lines; Air Compressor Lines Group1
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Air Lines (2p6845 N/S)
Air Lines (4n3616 N/S)
2p6852 Air Lines Group
Air Lines (2p6842 N/S)
Air Lines (4n6071 N/S)
Air Lines (2p6851 N/S)
Air Lines (2p8876 N/S)
Air Lines (2p6848 N/S)
Air Lines (2p6849 N/S)
2P***49Air Lines Group; Air Lines Group1
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4n4460 Air Lines Group
Air Lines (2p6847 N/S)--Type 1
Air Lines (2p6846 N/S)
Air Lines (2p6847 N/S)--Type 2
Air Lines (2p6850 N/S)
Exhaust Pipe (4n5504 N/S)
Exhaust Pipe (2p7352 N/S)
Exhaust Manifold Fastener (4n9586 N/S)
4N***86Fastener Group-Exhaust Manifold; Exhaust Manifold Fastener Group1
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Exhaust Manifold Fastener (2p6534 N/S)
2P***34Fastener Group-Exhaust Manifold; Exhaust Manifold Fastener Group1
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Air Lines (2p6841 N/S)
2P***41Lines Group-Air; Air Lines Group1
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Air Lines (1p9585 N/S)
Air Lines (2p6838 N/S)
2P***38Lines Group-Air; Air Lines Group1
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Air Compressor Lines (2p7797 N/S)
2P***97Lines Group-Air Compressor; Air Compressor Lines Group1
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2p7802 Air Compressor Lines Group
2P***02Lines Group-Air Compressor; Air Compressor Lines Group1
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Turbocharger Oil Lines (2p7315 N/S)
4n3333 Turbocharger Oil Lines Group
4N***33Lines Group-Turbocharger Oil; Turbocharger Oil Lines Group1
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Turbocharger Oil Lines (9l5801 N/S)
9L***01Lines Group-Turbocharger Oil; Turbocharger Oil Lines Group1
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Turbocharger Oil Lines (4n4625 N/S)
4N***25Lines Group-Turbocharger Oil; Turbocharger Oil Lines Group1
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2p6572 Exhaust Manifold Group
2P***72Manifold Group-Exhaust; Exhaust Manifold Group1
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2p6574 Exhaust Manifold Group
2P***74Manifold Group-Exhaust; Exhaust Manifold Group1
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Exhaust Manifold (9l5805 N/S)
Exhaust Manifold (2p6573 N/S)
Exhaust Pipe (2p7351 N/S)
2P***51Pipe Group-Exhaust; Exhaust Pipe Group1
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1p4280 Turbocharger Group
8s9234 Turbocharger Assembly (5s9584 N/S)
1p286 Turbocharger Assembly (9s5994 N/S)
9s8997 Turbocharger Assembly (9s5791 N/S--Type 1)
8s9237 Turbocharger Assembly (7s1701 N/S)
Turbocharger (9l5802 N/S)
9L***02Turbocharger Group; Turbocharger Group1
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4n9555 Turbocharger Group (1p9552 N/S)
4n9554 Turbocharger Group--Replaced By 4n9618 Shown On Page 171
8s8039 Turbocharger Assembly
8s8198 Turbocharger Assembly (8s8200 N/S)
4n9553 Turbocharger Assembly (9s5791 N/S--Type 2)
9l5345 Turbocharger Group
7s1701 Turbocharger Group
1p9373 Turbocharger Group (1p9552 N/S)
4n9618 Turbocharger Group
Turbocharger (5s9584 N/S)
4n9541 Turbocharger Assembly (9s5994 N/S)
Turbocharger Oil Lines (2p7316 N/S)
6n2257 Turbocharger Oil Lines Group
Lower Structure
Oil Pan Fastener (2p6199 N/S)
2P***99Fastener Group-Oil Pan; Oil Pan Fastener Group1
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Oil Pan Fastener (2p6200 N/S)
2P***00Fastener Group-Oil Pan; Fastener Gp-Engine Oil Pan1
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Oil Pan Fastener (2p6206 N/S)
2P***06Fastener Group-Oil Pan; Oil Pan Fastener Group1
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2p6493 Oil Level Gauge Group
2P***93Gauge Group-Oil Level (Dipstick); -Engine1
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Oil Level Gauge (2p9609 N/S)
2P***09Gauge Group-Oil Level (Dipstick)1
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Oil Level Gauge (2p9559 N/S)
2P***59Gauge Group-Oil Level (Dipstick)1
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Oil Level Gauge (4n6059 N/S)
4N***59Gauge Group-Oil Level (Dipstick)1
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Oil Level Gauge (2p6492 N/S)
Oil Pan (4n6057 N/S)
Oil Pan (2p9647 N/S)
Oil Pan (2p6152 N/S)
Oil Pan (2p6174 N/S)
Lubrication System
Oil Filler (4n5141 N/S)
Oil Filler (4n5138 N/S)
Oil Filler (4n5140 N/S)
4N***40Oil Filler Group; Oil Filler Group1
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Breather (1p4244 N/S)
Oil Filler (4n4791 N/S)
4N***91Filler Group-Oil; Oil Filler Group1
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Oil Filler (2p6855 N/S)
Oil Filler (4n5139 N/S)
Oil Filler (4n6066 N/S)
4N***66Filler Group-Oil; Oil Filler Group1
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Oil Filler (4n4817 N/S)
4N***17Filler Group-Oil; Oil Filler Group1
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Oil Filter (2p6475 N/S)
2P***75Filter Group-Engine Oil; Oil Filter Group (10z1 ~ 10z7023)1
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Oil Filter (2p6525 N/S)
Fumes Disposal (2p7446 N/S)
Fumes Disposal (4n3325 N/S)
4N***25Fumes Disposal Group; Fumes Disposal Group1
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Fumes Disposal (2p7447 N/S)
Fumes Disposal (3n3392 N/S)
3N***92Fumes Disposal Group; Fumes Disposal Group1
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Oil Lines (2p6105 N/S)
2P***05Lines Group-Engine Oil; Engine Oil Lines Group1
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Oil Lines (4n9718 N/S)
Oil Lines (2p6109 N/S)
2P***09Lines Group-Engine Oil; Engine Oil Lines Group1
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Oil Lines (2p6861 N/S)
2P***61Lines Group-Engine Oil; Engine Oil Lines Group1
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Oil Filler (2p6856 N/S)
Oil Filter (2p916 N/S)
Oil Lines (4n3694 N/S)
Oil Pump (2p1784 N/S)
2P***84Pump Group-Engine Oil; Engine Oil Pump Group1
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2p1785 Gear Pump Group
2p7830 Gear Pump Group
Oil Pump (2p6537 N/S)
2P***37Pump Group-Oil; Engine Oil Pump Group1
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Rear Structure
Rear Gear (2p8161 N/S)--Accessory Drive
2P***61Drive Group-Accessory; Rear Gear Group-Accessory Drive1
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Rear Gear (2p8159 N/S)--Accessory Drive
2P***59Drive Group-Accessory; Rear Gear Group Accessory Drive1
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Rear Gear (2p8162 N/S)--Accessory Drive
2P***62Drive Group-Accessory; Dowel - Frame To Flywheel Housing1
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Flywheel (7s3207 N/S)
Flywheel (2p9646 N/S)
Flywheel (7s7753 N/S)
Flywheel (2p1663 N/S)
Flywheel (1p9581 N/S)
7s7874 Flywheel Group
Flywheel (7s7877 N/S)
Flywheel (9s5783 N/S)
2p2505 Flywheel Group
7s5471 Flywheel Group
Flywheel (9s5784 N/S)
Flywheel (5s3451 N/S)
Flywheel (8s1494 N/S)
Flywheel (2p2702 N/S)
7s7878 Flywheel Group
Flywheel (7s7875 N/S)
Flywheel Housing (2p6154 N/S)
Flywheel Housing (2p9645 N/S)
Flywheel Housing (2p6208 N/S)
Flywheel Housing Cover (2p6130 N/S)
Flywheel Housing Cover (2p6238 N/S)
2p6814 Flywheel Housing Group
Flywheel Housing (2p9644 N/S)
Rear Gear (2p8621 N/S)--Accessory Drive
2P***21Gear Group-Rear; Rear Gear Group-Accessory Drive1
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Rear Gear (2p8622 N/S)--Accessory Drive
2P***22Gear Group-Rear; Rear Gear Group1
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Rear Gear (2p8160 N/S)--Accessory Drive
2p6129 Flywheel Housing Group
2P***29Housing Group-Flywheel; Flywheel Housing Group1
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2p6119 Flywheel Housing Group
2P***19Housing Group-Flywheel; Flywheel Housing Group1
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Flywheel Housing (4n5825 N/S)
4N***25Housing Group-Flywheel; Flywheel Housing Group1
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Flywheel Housing (2p6156 N/S)
2P***56Housing Group-Flywheel; Flywheel Housing Group1
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Flywheel Housing (2p6119 N/S)
2P***19Housing Group-Flywheel; Flywheel Housing Group1
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Flywheel Housing (2p6131 N/S)
2P***31Housing Group-Flywheel; Flywheel Housing Group1
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Flywheel Housing (4n6055 N/S)
4N***55Housing Group-Flywheel; Flywheel Housing Group1
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2p6166 Flywheel Housing Group
2P***66Housing Group-Flywheel; Flywheel Housing Group1
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Flywheel Housing (2p6122 N/S)
2P***22Housing Group-Flywheel; Flywheel Housing Group1
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Power Take-Off (9s6185 N/S)--Part 1
Power Take-Off (9s6185 N/S)--Part 2
Service Equipment And Supplies
Gasket Kits
Upper Structure
Cylinder Head Cover (9n136 N/S)
9N***36Cover Group-Cylinder Head; Cylinder Head Cover Group1
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Cylinder Head Cover (2p6530 N/S)
2P***30Cover Group-Cylinder Head; Cylinder Head Cover Group1
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2p6531 Cylinder Head Cover Group
2P***31Cover Group-Cylinder Head; Cylinder Head Cover Group1
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Valve Mechanism Cover (2p6516 N/S)
2P***16Cover Group-Valve Mechanism; Valve Mechanism Cover Group1
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4n7446 Cylinder Head Assembly
4N***46Cylinder Head As; Head Assembly-- Parts Service1
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2p6476 Cylinder Head Group
2P***76Cylinder Head Group; Cylinder Head Group1
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Cylinder Head (2p6496 N/S)
2P***96Cylinder Head Group; Cylinder Head Group1
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Cylinder Head (2p6486 N/S)
2P***86Cylinder Head Group; Cylinder Head Group1
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Cylinder Head Fastener (2p6546 N/S)
2P***46Fastener Group-Cylinder Head; Cylinder Head Fastener Group1
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Lifting Eye (1p3840 N/S)
1P***40Lifting Group; Lifting Eye Group1
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2p6526 Valve Mechanism Group
2P***26Valve-Mechanism Group; Valve Mechanism Group1
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561C serial number reference

The PIN plate is a durable metal identification plate, typically riveted to the machine frame. To read it, identify the 3-character alphanumeric prefix which denotes the model and factory, followed by the 5-digit sequence ID. For pre-2002 models, this 8-character code is the full serial number.

PrefixIdentifies
92J561C Pipelayer

Frequently asked questions

What engine is used in the Caterpillar 561C?

The 561C configuration varies; documented engines include the Caterpillar 3126B (providing up to 98 kW/132 hp gross power) and the Caterpillar D333.

What is the operating weight of this machine?

The operating weight varies by configuration, with documented values at approximately 16,851 kg (37,150 lb) and other series recorded near 32,500 lb.

What model replaced the 561C?

The documentation identifies the Caterpillar 561N as a subsequent model in the pipelayer lineage.

What 561C owners discuss

What are the common engine configurations found in the Caterpillar 561C pipelayer?
The 561C utilizes different engines depending on the specific build. Some units are equipped with a Caterpillar D333 engine (8.6L, 6-cylinder) providing approximately 93 hp. Other configurations for this model feature the Cat 3126B diesel engine, which provides a gross power of 98 kW (132 hp) and a rated flywheel power of 92 kW (123 hp). Always verify the engine serial number against the machine plate to confirm exact displacement and emissions tier.
What hydraulic fluid specifications should be used for maintenance?
For hydraulic systems, Caterpillar recommends using Cat HYDO Advanced oils. Using generic hydraulic oil can lead to cross-contamination; maintain contamination levels below 10% when switching fluids. For engine lubrication, use Cat DEO (Diesel Engine Oil) or DEO-ULS where required by emissions standards.
What are the typical symptoms of hydraulic system failure in this machine type?
Common indicators of hydraulic degradation include loss of pressure, overheated oil, and jerky movement. Internal leakage or contamination can cause performance drops long before total system collapse. Low hydraulic oil levels specifically can lead to cavitation, which destroys pumps.
What undercarriage design feature is standard for Caterpillar pipelayers?
Caterpillar pipelayers utilize an elevated sprocket design. This configuration is engineered to provide improved balance and stability during heavy lifting operations.
What electrical issues are frequently reported in Caterpillar heavy equipment?
Electrical instability is a common issue, often caused by moisture intrusion into connectors, stressed wiring harnesses, or failing charging systems. In machines with electronic control modules (ECM), a weak battery or simple grounding problems can cause the system to behave erratically and produce false fault codes.
What should be inspected when purchasing a used Caterpillar 561C?
Check the engine serial number to confirm the exact configuration. Inspect for signs of hydraulic contamination, such as milky oil which indicates coolant leaks. Examine the undercarriage for wear and verify the condition of all electrical connectors for moisture or corrosion.

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

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