Caterpillar D7F
Caterpillartrack-type tractor

Caterpillar D7F

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar D7F is a medium track-type tractor produced from 1969 to 1974, succeeding the D7E and preceding the D7G. It delivers 180 hp (130 kW) and operates within a weight range of 31,300 to 50,000 lb (14,200 to 22,700 kg), varying by configuration and attachments. The D7F was offered with standard straight, angle, universal, and S-U blades, as well as ripper and winch configurations for heavy earthmoving and pipeline construction.

The D7F introduced a robust 3306 diesel engine and a 3-speed forward/3-speed reverse transmission, establishing a durable platform for its era. It matters in the used and parts market because its mechanical simplicity and widespread adoption in logging, mining, and heavy grading create high demand for reliable undercarriage components, engine rebuild parts, and hydraulic systems. Its longevity ensures that functional units remain viable for specialized applications where modern electronic systems are less desirable.

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 D7F specifications

Engine

ModelCaterpillar 3306
Type6-cylinder, liquid-cooled inline diesel
Displacement10.5 L (638 ci)
Bore x Stroke121 x 152 mm (4.75 x 6.00 in)
Net Power134.2 kW (180 hp) at 2000 rpm
Emissions TierNot documented for this exact serial range — verify with your dealer

Weights

Operating Weight (Tractor Only)14197 kg (31300 lb)
Operating Weight (7U Bulldozer Config)18642 kg (41100 lb)
Operating Weight Range14197–18642 kg (31300–41100 lb) varies by configuration/series

Dimensions

Transport Length525.8 cm (207 in)
Transport Width396.2 cm (156 in)
Transport Height302.3 cm (119 in)
Blade Width OptionsNot documented for this exact serial range — verify with your dealer
Track Gauge198 cm (78 in)
Track Shoe Width50 cm (20 in)
Ground ClearanceNot documented for this exact serial range — verify with your dealer

Performance

Travel Speed (Forward)Not documented for this exact serial range — verify with your dealer
Travel Speed (Reverse)Not documented for this exact serial range — verify with your dealer
Drawbar PullNot documented for this exact serial range — verify with your dealer
GradeabilityNot documented for this exact serial range — verify with your dealer
Ground PressureNot documented for this exact serial range — verify with your dealer

Blades

S-Blade CapacityNot documented for this exact serial range — verify with your dealer
SU-Blade CapacityNot documented for this exact serial range — verify with your dealer
A-Blade CapacityNot documented for this exact serial range — verify with your dealer
VPAT Blade CapacityNot documented for this exact serial range — verify with your dealer

Service Capacities

Fuel Tank435.3 L (115 gal)
Hydraulic System90.8 L (24 gal)
Engine Oil27.4 L (29 qt)
Cooling System45.4 L (48 qt)

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

D7F fluids & capacities

SystemCapacityRecommended fluid
Engine Crankcase (with filter)27.4 L (29 qt)Cat DEO or Cat DEO-ULS; SAE 10W-30 preferred for ambient temperatures above -18°C (0°F) and below 40°C (104°F). Use SAE 0W-40 for temperatures down to -40°C (-40°F). Use SAE 5W-40 for temperatures down to -30°C (-22°F). Use SAE 15W-40 for temperatures down to -9.5°C (15°F). Use SAE 50 for hot climates (10°C to 50°C+). Cat ECF-1-a specification for older engines without aftertreatment. Cat ECF-2 specification for ACERT engines. Cat ECF-3 specification for Tier 4 engines with DPF/SCR. API CK-4, CJ-4, or CI-4 classifications are acceptable depending on engine generation.
Cooling System45.4 L (48 qt)Cat Extended Life Coolant (ELC). High-quality ethylene glycol-based coolant compatible with Caterpillar engines, typically dyed green or orange.
Fuel Tank435.3 L (115 gal)Standard diesel fuel.
Transmission/PowertrainNot documented for this exact serial range — verify with your dealerCat TDTO (Transmission, Drive Train, and Oil) for powershift transmissions and final drives. Cat TDTO Cold Weather for operations below -25°C (-13°F). Cat MTO (Multi-purpose Tractor Oil) is also listed for tractor applications. Cat TO-4 specification is acceptable for Allison C-4 compatible systems. SAE 10W/30/50 viscosity grades are associated with these transmission oils.
Final Drives (each)Not documented for this exact serial range — verify with your dealerCat TDTO (Transmission, Drive Train, and Oil). Cat TDTO Cold Weather for operations below -25°C (-13°F). Cat MTO (Multi-purpose Tractor Oil). Cat TO-4 specification is acceptable. SAE 10W/30/50 viscosity grades are associated with these transmission oils.
Hydraulic System/Tank90.8 L (24 gal)Cat HYDO Advanced 10 (SAE 10W) for cold to moderate temperatures. Cat HYDO Advanced 30 (SAE 30W) for moderate to hot temperatures. Cat BIO HYDO Advanced for biodegradable requirements. Cat HYDO Advanced fluids offer extended drain intervals when adhering to maintenance schedules.
GreaseNot documentedCat Multipurpose Grease for low-load and low-speed applications. Cat Advanced 3Moly Grease for medium-load and medium-speed applications. Cat Ultra 5Moly Grease for high-load and high-speed applications. Cat Desert Gold Grease for hot-weather applications. Cat Arctic Platinum Grease for cold-weather applications. Cat High Speed Ball Bearing Grease for automotive and industrial ball bearings. Cat White Assembly Grease for general purpose. Cat Hammer Paste Grease for hydraulic impact hammer applications. Cat High Vacuum Grease for specific applications.

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

Caterpillar D7F maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level.
  • Check hydraulic fluid level.
  • Check coolant level.
  • Check fuel level and drain water separator.
  • Check air filter restriction indicator.
  • Inspect for fluid leaks.
Every 250 h
  • Change engine oil and filter.
  • Grease all points (blade, push arms, ripper, pivots).
  • Check fluid levels.
  • Perform visual inspection.
  • Service air filter.
  • Check belts and hoses.
Every 500 h
  • Replace fuel filter.
  • Replace hydraulic return filter.
  • Service battery.
  • Perform detailed undercarriage inspection.
  • Test coolant.
  • Drain fuel water separator.
Every 1,000 h
  • Perform hydraulic oil sample analysis.
  • Change final drive oil.
  • Inspect turbocharger.
  • Torque ROPS bolts.
  • Measure undercarriage wear.
  • Clean or replace air filter element.
Every 2,000 h
  • Change hydraulic oil.
  • Flush coolant system.
  • Service transmission.
  • Perform comprehensive structural inspection.
  • Evaluate major components.
  • Replace hydraulic oil filter.

Servicing the D7F beyond the schedule

Predictive Maintenance & Fluid Analysis

Monitor hydraulic oil condition via S.O.S analysis to detect pump wear and contamination. Check coolant SCA levels to prevent liner pitting and corrosion. Inspect final drive oil for gear wear metals. Track engine oil viscosity and fuel dilution to protect the 3306 diesel engine. Use Cat HYDO Advanced fluids to extend hydraulic drain intervals and reduce oxidation. Analyze transmission oil for clutch material wear to prevent premature failure.

Corrective & Common Repairs

Address track tension issues by adjusting sprocket and idler alignment to prevent excessive wear. Replace worn cutting edges and end bits to maintain blade efficiency. Fix hydraulic hose leaks and replace cracked seals to prevent fluid loss. Repair or replace turbocharger components if boost pressure drops. Inspect and replace worn pins and bushings in the undercarriage to maintain track integrity. Check brake system function and replace worn pads or linings.

Overhaul & Rebuild Points

Rebuild the 3306 engine at high hour intervals, focusing on piston rings, bearings, and cylinder liners. Replace final drive planetary gears and seals to restore torque transmission. Overhaul the transmission clutch packs and torque converter to regain power. Rebuild hydraulic pumps and motors if flow or pressure drops below spec. Inspect the C-frame and blade structure for cracks or fatigue, especially around weld points. Replace undercarriage components as a set to ensure even wear and proper track engagement.

Seasonal & Environment Servicing

In dusty environments, clean radiator and oil cooler fins daily and inspect the air filter more frequently. Use Arctic Platinum grease in cold weather to ensure proper lubrication of pivot points. Switch to cold weather engine oil (SAE 0W-40) for low-temperature starts. In hot climates, monitor coolant temperature and check for leaks in the cooling system. Use Desert Gold grease for high-temperature applications. Ensure proper track tension to prevent slippage on soft or muddy terrain.

D7F 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.

D7F attachments & work tools

Blades

The D7F supports standard S, SU, and A blade types, with VPAT availability varying by configuration and series. Typical widths range from 3.05 m (10 ft) to 3.66 m (12 ft), with capacities varying by configuration and series.

Rippers

Multi-shank and single-shank ripper options are available for this class, with weights varying by configuration and series. Standard size shoes and drawbar attachment per ISO 16754 are used for rear attachment mounting.

Winches

Towing winch options are available, with maximum line pull being the lesser of the winch catalog rating or calculated maximum line pull at maximum tractor hydraulic system pressure. Cable ferrule size is 5 inches (127 mm) O.D. by unspecified length.

Drawbars/Counterweights

Standard size shoes and drawbar attachment per ISO 16754 are used. Counterweight options include a rear striker box and one counterweight, with a 75 kg (165 lb) operator weight included in shipping weight calculations.

Cab/ROPS Guarding

ROPS/FOPS cab options are available for forestry and waste configurations. OROPS with cage and limb risers are specified for certain forestry applications, with transport dimensions of 207 in (5.26 m) L x 156 in (3.96 m) W x 119 in (3.02 m) H.

Hydraulic Arrangement

The hydraulic system has a capacity of 90.8 L (24 gal) and operates at 168.9 bar (2450 psi) with a pump flow of 227.1 lpm (60 gpm). Fluid specifications include Cat HYDO Advanced for hydraulic systems and ELC for coolant.

All D7F assemblies by section

Every catalogued assembly group for the Caterpillar D7F. 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 1
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 2
2P***56Cover Group; Cylinder Block Cover Group1
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Cylinder Block Cover (4n8675 N/S)
Cylinder Block Cover (2p6517 N/S)--Type 2
2P***17Cover Group-Cylinder Block; Cylinder Block Covers 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 (4n5164 N/S)
4N***64Cover Group-Cylinder Block; Cylinder Block Cover Group1
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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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2p6220 Crankshaft Group--Type 2
Crankshaft (2p6222 N/S)
2P***22Crankshaft Group; Crankshaft Group1
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Crankshaft (2p6220 N/S)
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 (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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Connecting Rod And Piston (2p6272 N/S)--6 Required
2p6223 Crankshaft Seal Group
2P***23Seal Group-Crankshaft; Crankshaft Seal Group1
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2p6483 Crankshaft Seal Group
Crankshaft Seal (2p7308 N/S)
Crankshaft Seal (6n220 N/S)
2p6226 Crankshaft Seal Group
2P***26Seal Group-Crankshaft; Seal Group-Crankshaft1
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2p6224 Crankshaft Seal Group
2P***24Seal Group-Crankshaft; Crankshaft Seal Group1
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Cooling System
Engine Oil Cooler (2p7738 N/S)
2P***38Cooler Group-Engine Oil; Engine Oil Cooler Group1
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2p6215 Engine Oil Cooler Group
2P***15Cooler Group-Engine Oil; Oil Cooler Group Engine1
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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 (2p6510 N/S)
2P***10Cooler 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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Transmission Oil Cooler (2p6508 N/S)
2P***08Cooler Group-Transmission Oil; Transmission Oil Cooler Group1
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Engine Oil Cooler (4n3719 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 (3n3271 N/S)
3N***71Housing & Regulator Group; Housing And Regulator Group1
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Housing And Regulator (2p8176 N/S)
Housing And Regulator (2p8171 N/S)
2P***71Housing & Regulator Group; Housing And Regulator Group1
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Housing And Regulator (2p8174 N/S)
2P***74Housing & Regulator Group; Housing And Regulator Group1
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Housing And Regulator (2p8170 N/S)
Housing And Regulator (2p8177 N/S)
Housing And Regulator (2p8172 N/S)
2P***72Housing & 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)
Water Lines (2p7728 N/S)--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 (2p7730 N/S)
2P***30Lines Group-Water; Water Lines Group1
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2p7740 Water Lines Group--Elbow
2P***40Lines Group-Water; Water Lines Group--Elbow1
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2p7728 Water Lines Group--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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2p661 Water Pump Group
2P***61Pump Group-Water; Water Pump Group1
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2p662 Water Pump Group
2P***62Pump Group-Water; Water Pump Group1
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Transmission Oil Cooler (4n9068 N/S)
Transmission Oil Cooler (4n6646 N/S)
4N***46Transmission Oil Cooler Group; Oil Cooler Group Transmission1
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4n6646 Transmission Oil Cooler Group
4N***46Transmission Oil Cooler Group; Oil Cooler Group Transmission1
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Electrical System
2p1204 Alternator Group--24 Volt, 19 Ampere
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
5s9088 Alternator Assembly--24 Volt, 50 Ampere--Part 1 Of 2
2p7836 Alternator Group--24 Volt, 19 Ampere
2P***36Alternator Group-Charging; Charging Alternator Group1
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2p7836 Alternator Group--24 Volt--19 Ampere
2P***36Alternator Group-Charging; Charging Alternator Group1
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2p6162 Electric Starting Motor Group--Prestolite--24 Volt--Part 2 Of 2
2p6162 Electric Starting Motor Group--Prestolite--24 Volt--Part 1 Of 2
4n3180 Electric Starting Motor Group--Delco-Remy--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
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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2p2502 Electric Starting Motor Group--Delco-Remy--24 Volt--Part 1 Of 2
2p2502 Electric Starting Motor Group--Delco-Remy--24 Volt--Part 2 Of 2
7s3622 Electric Starting Motor Group--24 Volt--Type 2
7S***22Starting Motor Group-Electric; Electric Starting Motor Group1
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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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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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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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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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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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7s3622 Electric Starting Motor Group--24 Volt--Type 1
7S***22Starting Motor Group-Electric; Electric Starting Motor Group1
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Electric Starting Motor (7s4090 N/S)--24 Volt
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 2 Of 2
4N***52Starting Motor Group-Electric; Electric Starting Motor Group --Prestolite1
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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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4n7361 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump Group-Water; Water Pump Group1
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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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4n3571 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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4n7373 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather 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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4n7363 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump Group-Water; Water Pump 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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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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4n4993 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump 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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4n5359 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather 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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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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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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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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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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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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6n0486 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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6n0482 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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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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6n0484 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather 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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2p6803 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***80Turbocharger1
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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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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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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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2p6805 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
2P***62Pump Group-Water; Water Pump 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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2p6788 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***74Torque Control1
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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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4n7374 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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2p6789 Engine Ar
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
1P***74Torque Control1
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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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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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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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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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2p6806 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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6n0488 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather 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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4n7377 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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3p0075 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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2p9637 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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4n7371 Engine Ar
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
1P***40Lifting Group; Lifting Eye Group1
1P***44Breather Group1
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1p32 Arrangement
1P***32Engine Arrangement1
2P***93Engine Ar1
2P***73Normalizing Arrangement; Normalizing Arrangement Engine Parts1
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2p8947 Arrangement
2P***04Engine Ar1
2P***43Trunnion Group1
2P***47Engine Arrangement1
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4n8132 Engine Arrangement
2P***88Engine Ar1
4N***36Refrigerant Compressor Arrangement1
4N***61Basic Engine Arrangement1
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2p9562 Normalizing Arrangement
2P***22Crankshaft Group; Crankshaft Group1
2P***73Manifold Group-Exhaust1
2P***46Air Lines 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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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
4n5162 Front Housing Cover Group
4N***62Cover Group-Front Housing; Front Housing Cover Group1
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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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Damper (3p17 N/S)
Damper (2p7838 N/S)
Damper (4n3238 N/S)
Damper (4n3239 N/S)
Damper (4n4365 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 →
2p7831 Fan Drive Group
2P***31Drive Group-Fan; Fan Drive Group1
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Fan Drive (4n8537 N/S)
4N***37Drive Group-Fan; Fan Drive Group1
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Support (4n3506 N/S)
Support (2p7744 N/S)
Fan Drive (3p18 N/S)
2p6498 Front Housing Fastener Group
2P***98Fastener Group-Front Housing; Front Housing Fastener Group1
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4n5122 Front Housing Fastener Group
4N***22Fastener Group-Front Housing; Front Housing Fastener Group1
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Front Gear (2p7782 N/S)--Timing
2p6211 Front Gear Group--Timing
2P***11Front Gear Group; Front Gear Group-Timing1
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Front Housing (2p6153 N/S)
2P***53Front Housing; Front Housing Group1
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Front Gear (4n3271 N/S)--Timing
4N***71Gear Group-Front Timing; Front Timing Gear Group1
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2p9642 Front Gear Group--Timing
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 (4n9014 N/S)
Pulley (2p8217 N/S)
Pulley (2p8158 N/S)
2P***58Pulley Group; Fan Drive Pulley Group1
See all parts with full part numbers in Heavy Parts AI →
Pulley (2p8213 N/S)
2P***13Pulley Group; Pulley Group (Crankshaft & Fan Drive)1
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Pulley (2p8595 N/S)
Pulley (3p44 N/S)
Pulley (2p8601 N/S)
Pulley (4n3562 N/S)
4N***62Pulley Group-Crankshaft; Crankshaft Pulley Group1
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Pulley (2p8599 N/S)
Pulley (2p8602 N/S)
Support (2p7746 N/S)
Support (2p7750 N/S)
Support (2p8856 N/S)
2P***56Support Group; Engine Support Group1
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Support (2p7743 N/S)
Support (4n6051 N/S)
4N***51Support Group-Engine; Engine Support Group1
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Support (2p7745 N/S)
2P***45Support Group-Engine; Engine Support Group1
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Support (1p9586 N/S)
1P***86Support 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 (2p7747 N/S)
2P***47Support 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 (2p7753 N/S)
2P***53Support Group-Engine; Front Engine Support Group1
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Support (2p7751 N/S)
2P***51Support Group-Engine; Engine Support Group1
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Support (2p7749 N/S)
2P***49Support Group-Engine; Engine Support Group1
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2p8943 Trunnion Group
2p6246 Trunnion Group
Fuel System And Governor
6n300 Governor And Fuel Injection Pump Group
6N***00Governor And Fuel Injection Pump Group; Governor 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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6n303 Governor And Fuel Injection Pump Group
6N***03Governor 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 2
6N***41Governor 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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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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6n301 Governor And Fuel Injection Pump Group
6N***01Governor 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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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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6n297 Governor And Fuel Injection Pump Group
6N***97Governor 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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6n311 Governor And Fuel Injection Pump Group
6N***11Governor 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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Tachometer Drive (6n1399 N/S)
4n4751 Tachometer Drive Group
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)
Torque Control (6n3586 N/S)
Torque Control (4n9240 N/S)
6n3630 Torque Control Group
6n3609 Torque Control Group
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
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7l261 Fuel Filter And Priming Pump Group
1p2299 Fuel Filter Assembly
1P***99Filter As-Fuel; (Advanced Efficiency)(Secondary)1
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4n1981 Fuel Filter Group
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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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
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Fuel Filter (6n1750 N/S)
Fuel Filter (5s9665 N/S)
Fuel Filter (4n3599 N/S)
Fuel Filter (8s9311 N/S)
5s9666 Fuel Filter Group
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 (2p7456 N/S)
Fuel Injection Lines (2p7459 N/S)
Fuel Injection Lines (6n1057 N/S)
6N***57Fuel Injection Lines; Fuel Injection Lines Group1
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Fuel Injection Lines (4n3376 N/S)
4N***76Fuel Injection Lines; Fuel Injection Lines Group1
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Fuel Injection Lines (4n8007 N/S)
Fuel Injection Lines (2p7457 N/S)
Fuel Injection Lines (2p7458 N/S)
Fuel Injection Lines (6n1637 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 Injection Lines (4n6033 N/S)
Fuel Priming Pump (2p7709 N/S)
Fuel Priming Pump (5s2100 N/S)
7s1251 Fuel Priming Pump Group--Type 2
7s1251 Fuel Priming Pump Group--Type 1
Governor And Fuel Injection Pump (7s9337 N/S)
Governor And Fuel Injection Pump (5s9571 N/S)
Governor And Fuel Injection Pump (9s5979 N/S)
Governor And Fuel Injection Pump (5s9075 N/S)
Governor And Fuel Injection Pump (1p46 N/S)
Governor And Fuel Injection Pump (9s5785 N/S)
Governor And Fuel Injection Pump (8s110 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)
4n5063 Fuel Ratio Control Group
4n4900 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)
4n4878 Fuel Transfer Pump Group (7l247 N/S)
7s4430 Fuel Transfer Pump Group
7s5445 Fuel Transfer Pump Group (7s5108 N/S)
6n268 Governor And Fuel Injection Pump Group--Part 1 Of 2--Type 3
6n299 Governor And Fuel Injection Pump Group
6N***99Gov & Fuel Inj Pump Group; Governor And Fuel Injection Pump Group1
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6n263 Governor And Fuel Injection Pump Group--Type 2
Governor And Fuel Injection Pump (4n1836 N/S)--Part 3 Of 4--Type 3
6n260 Governor And Fuel Injection Pump Group--Type 2
6n268 Governor And Fuel Injection Pump Group--Part 2 Of 2--Type 2
Governor And Fuel Injection Pump (4n1836 N/S)--Part 2 Of 4--Type 3
Governor And Fuel Injection Pump (4n1836 N/S)--Part 4 Of 4--Type 1
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 4 Of 4--Type 2
Governor And Fuel Injection Pump (4n1836 N/S)--Part 2 Of 4--Type 1
Governor And Fuel Injection Pump (4n1836 N/S)--Part 1 Of 4--Type 3
6n268 Governor And Fuel Injection Pump Group--Part 2 Of 2--Type 3
Governor And Fuel Injection Pump (6n268 N/S)--Part 1 Of 2--Type 1
6n268 Governor And Fuel Injection Pump Group--Part 1 Of 2--Type 2
Governor And Fuel Injection Pump (6n268 N/S)--Part 2 Of 2--Type 1
Governor And Fuel Injection Pump (6n260 N/S)--Type 1
Governor And Fuel Injection Pump (4n1836 N/S)--Part 2 Of 4--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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6n263 Governor And Fuel Injection Pump Group--Type 1
Governor And Fuel Injection Pump (4n1836 N/S)--Part 4 Of 4--Type 3
6n261 Governor And Fuel Injection Pump Group--Type 2
6n3472 Governor And Fuel Injection Pump Group
6n305 Governor And Fuel Injection Pump Group
6N***05Gov & Fuel Inj Pump Group; Governor & Fuel Injection Pump Group1
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4n1836 Governor And Fuel Injection Pump Group--Part 1 Of 4
Governor And Fuel Injection Pump (4n1836 N/S)--Part 3 Of 4--Type 2
Governor And Fuel Injection Pump (4n1836 N/S)--Part 1 Of 4--Type 2
4n1836 Governor And Fuel Injection Pump Group--Part 2 Of 4
6n263 Governor And Fuel Injection Pump Group--Type 3
4n1836 Governor And Fuel Injection Pump Group--Part 3 Of 4
4n1836 Governor And Fuel Injection Pump Group--Part 4 Of 4
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 (6n261 N/S) -- Type 1
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 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 (4n4673 N/S)
4N***73Governor 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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8s6536 Governor Group--Part 1 Of 2--Type 3
9s6700 Governor Group--Part 2 Of 2--Type 2
7s9332 Governor Group--Part 2 Of 2--Type 2
1p47 Governor Group--Part 1 Of 2--Type 1
7s9332 Governor Group--Part 2 Of 2--Type 1
9s6700 Governor Group--Part 1 Of 2--Type 2
8s6536 Governor Group--Part 1 Of 2--Type 2
7s9332 Governor Group--Part 2 Of 2--Type 3
9s5740 Governor Group--Part 1 Of 2--Type 2
9s5740 Governor Group--Part 2 Of 2--Type 1
7s9332 Governor Group--Part 1 Of 2--Type 2
9s5740 Governor Group--Part 2 Of 2--Type 2
7s9332 Governor Group--Part 1 Of 2--Type 3
7s9333 Governor Group--Part 2 Of 2--Type 1
9s6701 Governor Group--Part 1 Of 2--Type 2
8s9442 Governor Group--Part 1 Of 2--Type 1
9s6700 Governor Group--Part 1 Of 2--Type 1
8s6536 Governor Group--Part 2 Of 2--Type 1
9s6701 Governor Group--Part 2 Of 2--Type 1
9s5740 Governor Group--Part 1 Of 2--Type 1
8s6536 Governor Group--Part 2 Of 2--Type 2
9s6701 Governor Group--Part 1 Of 2--Type 1
8s9442 Governor Group--Part 2 Of 2--Type 2
7s9332 Governor Group--Part 1 Of 2--Type 1
7s9333 Governor Group--Part 2 Of 2--Type 2
9s6700 Governor Group--Part 2 Of 2--Type 1
8s9442 Governor Group--Part 1 Of 2--Type 2
1p47 Governor Group--Part 2 Of 2--Type 2
8s6536 Governor Group--Part 1 Of 2--Type 1
7s9333 Governor Group--Part 1 Of 2--Type 1
8s6536 Governor Group--Part 2 Of 2--Type 3
9s6701 Governor Group--Part 2 Of 2--Type 2
7s9333 Governor Group--Part 1 Of 2--Type 2
1p47 Governor Group--Part 2 Of 2--Type 1
1p47 Governor Group--Part 1 Of 2--Type 2
8s9442 Governor Group--Part 2 Of 2--Type 1
Torque Control (4n3650 N/S)
Torque Control (9s5546 N/S) - Type 1
Torque Control (9l5382 N/S)
8s6099 Torque Control Group--Type 2
Torque Control (9s9028 N/S)
Torque Control (8s6099 N/S) - Type 1
Torque Control (8s5050 N/S)
9s5546 Torque Control Group--Type 2
Torque Control (8s5042 N/S)--Type 1
Torque Control (1p5007 N/S)
8s5042 Torque Control Group--Type 2--Field Installation
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 (4n9625 N/S)
4N***25Pump Group-Fuel Priming; Fuel Priming Pump Group1
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Fuel Priming Pump (4n4314 N/S)
4N***14Pump 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)
9s8921 Service Meter Group
Service Meter (9s8732 N/S)
Service Meter (8s6865 N/S)
Service Meter (9s5141 N/S)
Service Meter (8s3688 N/S)
8S***88Service Meter; Service Meter Group1
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Service Meter (9s7993 N/S)
Service Meter (9s8923 N/S)
Service Meter (9s9978 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
Service Meter (4n3337 N/S)
9s7128 Service Meter Group
4n4026 Service Meter Group
4N***26Service Meter Group; Service Meter Group1
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4n4025 Service Meter Group
Service Meter (4n8064 N/S)
9l9345 Torque Control Group
2s9519 Torque Control Group
Torque Control (4n283 N/S)
Torque Control (1p6474 N/S)
1p6474 Torque Control Group--Type 2
Torque Control (4n8924 N/S)--Type 1
Torque Control (4n8924 N/S)--Type 2
Torque Control (2p8592 N/S)
Torque Control (4n9302 N/S)
Torque Control (6n2922 N/S)
4n9193 Torque Control Group--Type 2
Torque Control (6n453 N/S)
Torque Control (4n9193 N/S) - Type 2
6n3610 Torque Control Group
Torque Control (6n534 N/S)
Torque Control (6n581 N/S)
Torque Control (4n9193 N/S)
Torque Control (6n509 N/S)
Torque Control (6n454 N/S)
Intake And Exhaust System
2p7800 Air Compressor Group
Air Compressor (2p7801 N/S)
2P***01Air Compressor Group; Air Compressor Group1
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Air Compressor (2p7798 N/S)
Air Compressor (2p7795 N/S)
2P***95Air Compressor Group; Air Compressor Group1
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Air Compressor (2p9613 N/S)
2P***13Air Compressor Group; Air Compressor Group1
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2p7798 Air Compressor Group
2p7794 Air Compressor Group
2p7801 Air Compressor Group
2P***01Air Compressor Group; Air Compressor Group1
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2p1830 Air Compressor Group
Air Compressor (2p9614 N/S)
Air Compressor Lines (2p7799 N/S)
2P***99Air Compressor Lines; Air Compressor Lines Group1
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Air Lines (2p6842 N/S)
Air Lines (4n3616 N/S)
2p6852 Air Lines Group
Air Lines (4n6071 N/S)
Air Lines (2p6845 N/S)
Air Lines (2p6849 N/S)
2P***49Air Lines Group; Air Lines Group1
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Air Lines (2p6851 N/S)
4n4460 Air Lines Group
Air Lines (2p6850 N/S)
Air Lines (2p6848 N/S)
Air Lines (2p6847 N/S)--Type 2
Air Lines (2p6846 N/S)
Air Lines (2p8876 N/S)
Air Lines (2p6847 N/S)--Type 1
Exhaust Pipe (4n5504 N/S)
Exhaust Pipe (2p7352 N/S)
Exhaust Manifold Fastener (2p6534 N/S)
2P***34Fastener Group-Exhaust Manifold; Exhaust Manifold Fastener Group1
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Exhaust Manifold Fastener (4n9586 N/S)
4N***86Fastener Group-Exhaust Manifold; Exhaust Manifold Fastener 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 Lines (2p6841 N/S)
2P***41Lines 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 (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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4n3333 Turbocharger Oil Lines Group
4N***33Lines Group-Turbocharger Oil; Turbocharger Oil Lines Group1
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Turbocharger Oil Lines (2p7315 N/S)
2p6574 Exhaust Manifold Group
2P***74Manifold Group-Exhaust; Exhaust Manifold Group1
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2p6572 Exhaust Manifold Group
2P***72Manifold Group-Exhaust; Exhaust Manifold Group1
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Exhaust Manifold (2p6573 N/S)
Exhaust Manifold (9l5805 N/S)
Exhaust Pipe (2p7351 N/S)
2P***51Pipe Group-Exhaust; Exhaust Pipe Group1
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1p4280 Turbocharger Group
8s9237 Turbocharger Assembly (7s1701 N/S)
1p286 Turbocharger Assembly (9s5994 N/S)
8s9234 Turbocharger Assembly (5s9584 N/S)
9s8997 Turbocharger Assembly (9s5791 N/S--Type 1)
4n9553 Turbocharger Assembly (9s5791 N/S--Type 2)
4n9555 Turbocharger Group (1p9552 N/S)
9l5345 Turbocharger Group
8s8198 Turbocharger Assembly (8s8200 N/S)
4n9541 Turbocharger Assembly (9s5994 N/S)
4n9554 Turbocharger Group--Replaced By 4n9618 Shown On Page 171
8s8039 Turbocharger Assembly
Turbocharger (5s9584 N/S)
1p9373 Turbocharger Group (1p9552 N/S)
Turbocharger (9l5802 N/S)
9L***02Turbocharger Group; Turbocharger Group1
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7s1701 Turbocharger Group
4n9618 Turbocharger Group
Turbocharger Oil Lines (2p7316 N/S)
6n2257 Turbocharger Oil Lines Group
Lower Structure
Oil Pan Fastener (2p6206 N/S)
2P***06Fastener 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 (2p6199 N/S)
2P***99Fastener Group-Oil Pan; Oil Pan Fastener Group1
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Oil Level Gauge (2p9559 N/S)
2P***59Gauge Group-Oil Level (Dipstick)1
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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 (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 (2p6152 N/S)
Oil Pan (2p9647 N/S)
Oil Pan (2p6174 N/S)
Lubrication System
Oil Filler (4n5138 N/S)
Oil Filler (4n5140 N/S)
4N***40Oil Filler Group; Oil Filler Group1
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Oil Filler (4n5141 N/S)
Breather (1p4244 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 (4n4791 N/S)
4N***91Filler Group-Oil; Oil Filler Group1
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Oil Filler (2p6855 N/S)
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 (3n3392 N/S)
3N***92Fumes Disposal Group; Fumes Disposal Group1
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Fumes Disposal (4n3325 N/S)
4N***25Fumes Disposal Group; Fumes Disposal Group1
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Fumes Disposal (2p7447 N/S)
Oil Lines (2p6861 N/S)
2P***61Lines 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 (2p6105 N/S)
2P***05Lines 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 (2p8159 N/S)--Accessory Drive
2P***59Drive Group-Accessory; Rear Gear Group Accessory Drive1
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Rear Gear (2p8161 N/S)--Accessory Drive
2P***61Drive 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 (2p9646 N/S)
Flywheel (7s3207 N/S)
2p2505 Flywheel Group
7s5471 Flywheel Group
Flywheel (2p1663 N/S)
7s7878 Flywheel Group
Flywheel (5s3451 N/S)
Flywheel (7s7875 N/S)
Flywheel (8s1494 N/S)
Flywheel (7s7753 N/S)
7s7874 Flywheel Group
Flywheel (9s5783 N/S)
Flywheel (1p9581 N/S)
Flywheel (9s5784 N/S)
Flywheel (7s7877 N/S)
Flywheel (2p2702 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)
Flywheel Housing (2p9644 N/S)
2p6814 Flywheel Housing Group
Rear Gear (2p8622 N/S)--Accessory Drive
2P***22Gear Group-Rear; Rear Gear Group1
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Rear Gear (2p8621 N/S)--Accessory Drive
2P***21Gear Group-Rear; Rear Gear Group-Accessory Drive1
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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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Flywheel Housing (4n5825 N/S)
4N***25Housing 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 (4n6055 N/S)
4N***55Housing 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 (2p6119 N/S)
2P***19Housing 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 (2p6122 N/S)
2P***22Housing Group-Flywheel; Flywheel Housing Group1
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2p6166 Flywheel Housing Group
2P***66Housing 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 (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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Cylinder Head Cover (9n136 N/S)
9N***36Cover 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 (2p6486 N/S)
2P***86Cylinder 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 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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D7F serial number reference

The Product Identification Number (PIN) plate is located on the rear of the machine, high on the left side of the frame rail, often obscured by ripper attachments. The prefix consists of the first three characters of the PIN; for the D7F, this is the '94N' code followed by the serial sequence.

PrefixIdentifies
94ND7F

Frequently asked questions

What engine does the D7F use?

The D7F uses a Caterpillar 3306 diesel engine producing 180 hp (130 kW).

What is the operating weight of the D7F?

The operating weight ranges from 31,300 to 50,000 lb (14,200 to 22,700 kg), varying by configuration and attachments.

What replaced the D7F?

The D7F was replaced by the D7G in 1974.

What D7F owners discuss

What are the known powertrain and transmission behaviors specific to the D7F series?
Early D7F units (serial prefix 94N below 5192) utilized a transmission derived from the D7E, which was a low-speed/high-torque design unsuitable for the higher RPM of the 3306 engine. This configuration was prone to failure under heavy loads like scraper pushing. Later units (serial 94N 5192 and above) received a high-speed/low-torque transmission similar to the D6C, which resolved the durability issues. Cold-start sluggishness is common in early models due to oil starvation; checking the transmission suction line O-rings and magnetic screen is critical. The combined steering and brakes feature did not arrive until the D7G series; the D7F retains separate steering clutches and brakes, requiring significant pedal pressure to lock tracks. Have your dealer verify transmission serial tags and clutch adjustment specs before operation.
What engine configurations and quirks are associated with the D7F?
The D7F primarily uses the Caterpillar 3306 series 6-cylinder diesel engine. Early units (prefix 92E) may have been equipped with the D339T, but the 93N and 94N prefixes generally utilize the 3306 or D333T. The 3306 engine runs at higher RPMs than the preceding D7E, contributing to the transmission stress issues in early models. Military D7F units (prefix 61G) underwent a Service Life Extension Program (SLEP) in the early 2000s, which included retrofitting later-model 3306 engines with updated fuel injection systems, boosting output to 200 hp. Engine oil specifications include Cat DEO or DEO-ULS. Coolant contamination should be monitored via oil condition, as milky oil indicates head gasket failure.
What are the typical undercarriage wear patterns and availability issues for the D7F?
The D7F is a medium-weight crawler tractor with a standard operating weight of approximately 50,000 lbs (22,680 kg), though this varies by configuration and attachments. Undercarriage components (rails, rollers, idlers) are difficult to source in used condition due to the machine's age and high wear rates. Operators report that used parts are often worn beyond repair. Aftermarket undercarriage is the primary source for replacements. When inspecting, check for excessive wear on track links and roller flanges, as the machine's weight distribution can accelerate wear if not properly maintained.
What are the common electrical and hydraulic system issues reported by owners?
Hydraulic system overheating is a frequent complaint, particularly on the auxiliary hydraulic lines for ripper or blade controls. This is often caused by air ingress or internal leakage in the hydraulic tank or pump. Check the hydraulic tank breather cap and fluid level; air pressure buildup in the tank can indicate a clogged breather or seal failure. Electrical issues often stem from aging wiring harnesses in the canopy or cab. Verify the operation of all auxiliary hydraulic levers, as hot lines indicate internal bypassing. Use Cat HYDO Advanced or equivalent biodegradable hydraulic oil to prevent sludge formation in older valve assemblies. Cross-contamination of hydraulic oils must be kept below 10% to avoid chemical reactions that damage pumps.
What is the consensus on the D7F's reputation and suitability for work?
The D7F has a polarized reputation. Early models (pre-serial 94N 5192) are viewed with caution due to the weak D7E-derived transmission, making them unsuitable for heavy production dozing or scraper work. Later models (post-serial 94N 5192) are considered reliable and responsive, offering better bulk pushing capabilities than the D7E. The machine is lighter on the front end than the D7E, which can cause stability issues on steep slopes if the blade is not weighted. Adding steel plates to the moldboard is a common modification to improve balance and traction. The D7F is generally recommended for light to medium duty, land clearing, or hobby use rather than heavy industrial production.
What are the key specifications and dimensions for the D7F?
Operating weight ranges from 31,300 to 41,100 lbs (14,200 to 18,640 kg) depending on configuration, blade, and attachments. Standard operating dimensions are approximately 17 ft 4 in (0.1 m) in length, 11 ft 4 in (0.1 m) in width, and 11 ft 2 in (0.05 m) in height. Net horsepower is rated at 180 hp (130 kW) for standard civilian models, while SLEP military units may reach 200 hp (150 kW). Fuel capacity and hydraulic tank size vary by attachment package. Verify exact weights with the specific serial number tag, as configurations differ significantly.
What should be checked when buying a used D7F?
1. Verify the serial number prefix: 94N 5192 and above indicates the upgraded transmission; below this number, the transmission is the weak link. 2. Check the transmission suction line O-rings and magnetic screen for metal debris or hardening, which cause cold-start oil starvation. 3. Inspect the undercarriage for wear, as used parts are scarce and expensive. 4. Test the hydraulic system for overheating, particularly on auxiliary lines, and check for air in the hydraulic tank. 5. Confirm the engine model (3306 vs. D339T) and check for coolant contamination in the oil. 6. Verify the operation of steering clutches and brakes, which are separate and require significant pedal pressure. Have your dealer verify the transmission serial tag and clutch adjustment specs before purchase.

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

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