Caterpillarwheel-type skidderwheel skidder
Caterpillar 518
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar 518 is a mid-size wheel-type skidder built for forestry and logging work, powered through its production run by the Cat 3304 turbocharged four-cylinder diesel (early production carried the D330 engine designation before Cat standardized on 3304 naming). It runs mechanical unit injection with a mechanical governor and carries no ECM or digital fault codes. Operating weight varies by configuration: the base skidder runs about 9,698 kg (21,380 lb), the Cable Skidder about 10,249 kg (22,597 lb), and the heavier Grapple Skidder about 12,025 kg (26,511 lb). Caterpillar built the 518 from the early 1970s (USA production from 1971, Canadian production from 1973) through the mid-1980s, offering it as a base skidder, a Cable Skidder with a Gearmatic PTO-driven winch on a single or dual arch, and a Grapple Skidder with power-shift controls and a swing-boom grapple on a dual arch. Its place in Caterpillar's period skidder lineup sits between lighter and heavier wheel skidders in the range; a clear, documented direct predecessor or successor model has not been established and should not be assumed.
Across its production run the 518 picked up incremental updates rather than a clean generational break. Base and early Cable/Grapple units carried the roughly 120 to 130 flywheel hp rating, while a later Series II update (reflected in the 95U serial prefix range) offered a dual 130/145 hp rating and added front wheel caliper disc brakes on grapple-configured machines. Serial prefixes split by plant and configuration: 50S and 94U for cable-configured machines built in the USA and Canada, 55U and 95U for power-shift grapple machines, with 95U carrying the documented Series II sub-range. In today's used and parts market the 518 remains relevant because its mechanical fuel system, powershift transmission and simple wheel-type undercarriage are straightforward to keep running and rebuild without factory diagnostic tools, and a working population of these machines is still logging in small to mid-size operations. Wear items concentrate at the articulation trunnion and king-pin bushings and at the planetary final drives rather than at track components, which shapes what the parts and rebuild market demands for this model.
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 518 specifications
Engine
| Engine model | Cat 3304, turbocharged 4-cylinder diesel (early production used the D330 engine designation before the 3304 model naming) |
| Gross power | Grapple and Cable configurations rated at 130 hp (97 kW); early standard 518 units rated around 120 flywheel hp (89.5 kW). Later Series II 3304 offered a dual 130/145 hp rating. Power varies by series and configuration |
| Displacement | Approx. 7.0 L (425-427 cu in) |
| Cylinders | 4, in-line, turbocharged |
| Emissions tier | Pre-emissions design (machine predates Tier/Stage regulation); not documented — verify with your dealer |
Weights
| Operating weight — base 518 skidder | Approx. 9,698 kg (21,380 lb); some sources round to 22,000 lb (9,979 kg). Varies by source/configuration |
| Operating weight — 518 Grapple Skidder | Approx. 12,025 kg (26,511 lb) |
| Operating weight — 518 Cable Skidder | Approx. 10,249 kg (22,597 lb) |
| Shipping weight | Not documented for this exact configuration — verify with your dealer |
| Ground pressure | Not documented in verifiable factory literature for this model |
Dimensions
| Overall length — base 518 skidder | Approx. 5.23 m (17 ft 2 in); some listings cite lengths up to 6.63 m (21 ft 9 in) depending on winch/arch configuration. Varies by configuration |
| Overall length — 518 Cable Skidder | Approx. 5.72 m (18 ft 9 in) |
| Overall width | Approx. 2.51-2.64 m (8 ft 3 in - 8 ft 8 in), varies by tire size and configuration |
| Height to top of cab | Approx. 2.79-2.91 m (9 ft 2 in - 9 ft 7 in), varies by source |
| Wheelbase — base 518 skidder | Approx. 2.90 m (9 ft 6 in) |
| Wheelbase — Grapple/Cable Skidder | Approx. 3.25 m (10 ft 8 in) |
| Ground clearance | Approx. 0.47-0.51 m (1 ft 7 in - 1 ft 8 in), varies by configuration |
| Tire size | 18.4-34 up to 28.1-16 on base skidder; 23.1-26 on Grapple and Cable configurations |
Performance
| Travel speed, forward | Approx. 24-27 km/h (15-16.5 mph), 3 forward gears, varies by configuration |
| Travel speed, reverse | Approx. 29-32 km/h (17.9-19.8 mph), 3 reverse gears, varies by configuration |
| Winch/cable max line pull (bare drum) | Approx. 11,960 kg (26,363 lb) on Grapple and Cable configurations |
| Winch max line speed | Approx. 92 m/min (302 ft/min) |
| Axle oscillation | 14 degrees (Grapple/Cable configurations) |
| Grapple capacity (tongs tip to tip) | Approx. 0.7 sq m (7.5 sq ft) on Grapple Skidder |
| Gradeability / drawbar pull | Not published in available factory or dealer literature — verify with your dealer |
Service capacities (summary)
| Fuel tank — base 518 skidder | Approx. 151 L (40 gal) |
| Fuel tank — Grapple/Cable configurations | Approx. 193 L (51 gal) |
| Hydraulic system | Approx. 28-29 L (7.5-7.7 gal); hydraulic pump is a piston-type unit, relief valve set around 20,700 kPa (3,000 psi) |
| Engine oil capacity | Not documented for this exact configuration — verify with your dealer or the 3304 engine service manual |
| Cooling system capacity | Not documented for this exact configuration — verify with your dealer or the 3304 engine service manual |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
518 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) - Cat 3304 diesel (naturally aspirated, approx. 7.0 L displacement) | Not documented for this exact serial range in available literature - verify with your dealer or the machine's OMM lubricant chart before servicing. | Cat DEO (Diesel Engine Oil), API CD-equivalent duty oil. Cold climates: SAE 10W-30. Warm climates: SAE 15W-40 (SAE 30 also period-correct for this engine generation). |
| Cooling system | Not documented for this exact serial range in available literature - verify with your dealer or the machine's OMM. | Cat DEAC (Diesel Engine Antifreeze/Coolant) premixed 50/50 with water, or full-life Cat ELC as a modern equivalent. Never run water alone. |
| Fuel tank | 151-193 L (40-51 US gal) - varies by configuration/series (cable vs grapple carriage changes fuel tank size on this model). | Distillate diesel fuel meeting Cat specification for distillate diesel fuel; low-sulfur diesel accepted, no ULSD requirement for this pre-emissions-era engine. |
| Transmission/power train (powershift transmission and torque converter, 3F/3R) | Approx. 32 L (8.5 US gal) - figure from a single trade source, not cross-verified against a second independent source; confirm before filling. | Cat TDTO (Transmission and Drive Train Oil), SAE 30, meeting Cat TO-4 specification. Any commercial SAE 30 oil meeting TO-4 is an acceptable equivalent. |
| Final drives (each, front and rear) | Not documented for this exact serial range in available literature - verify with your dealer or the machine's OMM. | Cat TDTO, SAE 30, meeting Cat TO-4 specification (same family as power train oil on machines of this era). |
| Hydraulic system and tank | 28-29 L (7.5-7.7 US gal) - varies slightly by configuration/series. | Cat hydraulic oil of the HYDO/TDTO family used on machines of this era, viscosity selected by climate; not confirmed which specific product name the original OMM specifies for this exact serial range - verify with your dealer. |
| Axles/differentials | Not separately documented for this configuration - on this wheel skidder's driveline the front and rear axle/differential lubrication may share the power train oil circuit; verify with your dealer or the machine's OMM. | Cat TDTO, SAE 30, meeting Cat TO-4 specification, consistent with the rest of the power train. |
| Grease (spec only) | Not applicable (grease points serviced individually, no reservoir capacity). | Cat Multipurpose Grease, NLGI Grade 2, for all pin and linkage grease fittings; cold-climate NLGI 1 or 0 grades if operating below freezing for extended periods. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar 518 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the 518 beyond the schedule
Predictive Maintenance & Fluid Analysis
With no ECM or fault codes on the 3304's mechanical injection system, oil sampling is the main early-warning tool on a 518. Pull engine oil and powershift transmission (TO-4/TDTO) samples at 250-hour intervals and watch wear-metal trends from the planetary final drives and king-pin/trunnion bushings, the two areas where this wheel-type frame concentrates wear. Track turbocharger boost and exhaust smoke by eye, since drift in the mechanical governor and injector linkage will not throw a warning light.
Corrective & Common Repairs
Recurring issues on the 518 center on articulation trunnion and steering cylinder pin wear, injector pump and governor linkage adjustment, and caliper brake wear on 55U/95U grapple units. Cable-configured machines see Gearmatic winch clutch and cable wear; Grapple-configured machines see swing-boom bushing and hydraulic cylinder seal wear from cyclic loading. Powershift clutch pack slippage and torque converter stall issues are common corrective jobs as hours accumulate.
Overhaul & Rebuild Points
High-hour 518s typically need an inframe overhaul of the 3304 (liners, pistons, bearings) before a full engine replacement is justified. Powershift clutch packs and the torque converter are the next major rebuild item, followed by king-pin and trunnion bushing replacement as a set once play exceeds factory tolerance. Planetary final drives and differential carrier bearings are rebuilt together, and turbocharger cartridges are typically replaced rather than repaired in the field.
Seasonal & Environment Servicing
Cold-start reliability on the 518 depends on correct engine oil viscosity and a properly functioning ether or glow-plug aid for the mechanical injection 3304, plus checked coolant glycol concentration. In wet or muddy logging ground, purge and re-grease the articulation trunnion and king-pin bushings more often than the standard interval to flush out contaminated grease. Clean radiator cores and screens frequently in bush environments where chips, needles and dust load the cooling system faster than in open-field use.
518 common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 1P-2299 | Filter As-Fuel | Fuel system service | Check fitment → |
| 2P-7714 | Fuel Filter | Fuel system service | Check fitment → |
| 5S-9665 | Fuel Filter | Fuel system service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
518 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| TRANSMISSION OIL TEMPERATURE gauge - high (red zone) | Power-train (torque converter/transmission) oil temperature gauge reads above normal operating range. | Sustained high-load pulling beyond duty-cycle limits, restricted cooler airflow, low oil level, or water-contaminated oil causing clutch-pack slippage in low range. | Reduce load and let the machine idle to cool, check oil level and look for milky discoloration indicating water intrusion, inspect the oil cooler core. |
| POWER TRAIN OIL FILTER BYPASS lamp | Lamp lights when the transmission oil filter differential pressure is high enough that oil is bypassing the element unfiltered. | Plugged filter element, cold thickened oil at startup, or a worn charging pump dropping supply pressure below spec. | Check transmission oil pressure at the filter test port against the factory range, replace the filter, allow the machine to warm before applying load. |
| GEAR SELECTOR indicator drops to NEUTRAL unexpectedly | Transmission control indicator shows neutral on its own during operation without the operator shifting. | Electrical fault in the gear-selector switch or its wiring harness rather than an internal transmission failure. | Trace and test the selector switch and harness continuity before tearing into the transmission. |
| ALTERNATOR / CHARGING lamp - not charging | Lamp lights when charging-system output drops below regulated voltage. | Worn alternator brushes or regulator, loose or glazed belt, or a fault in the dash panel wiring/connectors. | Check belt tension, load-test the alternator output, inspect dash panel wiring and connectors for corrosion or breaks. |
| ENGINE OIL PRESSURE lamp - low | Lamp lights when engine oil pressure on the 3304 diesel falls below the safe minimum. | Low oil level, worn oil pump, plugged oil filter, or a failed pressure sending unit. | Shut the engine down immediately, check oil level and filter condition, verify sender before restart. |
| COOLANT TEMPERATURE gauge - high | Engine coolant temperature gauge reads above the normal operating band. | Extended high-load operation beyond the machine's cooling duty-cycle limits, low coolant, a plugged radiator core, or a slipping fan belt. | Reduce load and observe the recommended work/rest cooling interval, check coolant level and clean debris from the radiator core. |
| HYDRAULIC OIL TEMPERATURE gauge - high | Implement (winch/blade/arch) hydraulic system oil temperature gauge reads in the high range. | A sticking relief valve, low hydraulic fluid level, a plugged cooler, or sustained high-pressure stall against a relief setting. | Check fluid level, inspect the cooler and relief valve, let the system cool before resuming work. |
| TORQUE CONVERTER OIL PRESSURE - low or erratic | Torque converter charging pressure reads below spec at the test port. | Low transmission oil level, a worn charging pump, or internal converter seal leakage. | Check oil level first, then test converter inlet/outlet pressure against the factory spec and inspect the charging pump. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
518 attachments & work tools
Grapple / swing-boom attachment
Single-function swing-boom timber grapple mounted on the arch, standard on the grapple-skidder configuration of this model. Tong opening at the tips runs around 2.1 m (6.8 ft); jaw/grapple capacity is reported in a 0.7-0.95 sq m (7.5-10 sq ft) range depending on source. Boom reach at ground level is about 2.6 m (8.6 ft).
Cable / winch package
Rear-mounted power-take-off driven cable winch used for conventional skidding on the cable-skidder configuration. Bare-drum line pull is documented at roughly 11,900 kg (26,000 lb) class in the more consistent references, though some listings show conflicting figures - treat as class-typical and verify against the machine's winch data plate. Drum spools on the order of 75 m (250 ft) of wire rope.
Arch configuration
Offered in both single-arch and dual-arch layouts. Dual-arch frames are the common base under the swing-boom grapple package; single-arch frames are typical on winch-only cable units, though both layouts show up on grapple-equipped machines in the field.
Push/dozer blade
Front-mounted straight blade for trail clearing, deck cleanup, and light dozing. Maximum blade lift height is about 1.25 m (49 in), consistent across independent spec listings. Seen mainly on cable/winch-equipped units; less common as a factory fit on dedicated grapple machines.
Mounting and hydraulic hookup
Work tools pin-mount directly to the arch/boom structure - there is no excavator-style quick-coupler on this class of skidder. Grapple rotation, boom swing, and blade lift all run off the machine's own piston-pump circuit, rated around 172 L/min (45.5 gpm) with a relief setting near 20,700 kPa (3,000 psi), so any add-on tool needs to be plumbed into that existing circuit rather than carrying its own pump.
Third-party grapple heads
Swing grapples fitted to this model in the field are commonly third-party units - Esco-pattern grapple heads turn up repeatedly on period machines - rather than a house-brand grapple head built specifically for this skidder. Confirm mounting geometry and hydraulic flow needs with the grapple supplier before ordering a replacement or upgrade.
Operator guarding and cab
Standard protection is an open ROPS canopy with screening. Forestry-duty machines commonly add extra grille and screen guarding around the canopy and rear end for grapple and limbing work. A factory enclosed-cab option is not well documented for this model - verify with a dealer if that configuration is needed.
Tire and flotation options
Cable/winch units are shown across a size range from 18.4-34 up to 28.1-16, while grapple-configured units commonly run 23.1-26. Tire selection follows ground flotation and terrain needs rather than a single fixed factory spec.
All 518 assemblies by section
Every catalogued assembly group for the Caterpillar 518. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Central Structure
5s6425 Balancer Group
| 5S***25 | Balancer Group; Balancer Group | 1 |
2p6201 Camshaft Group
| 2P***01 | Camshaft Group-Single; Single Camshaft Group | 1 |
2p6495 Cylinder Block Cover Group
| 2P***95 | Cover Group; Cylinder Block Cover Group | 1 |
4n7692 Crankshaft Assembly--Field Installation
| 4N***92 | Crankshaft As | 1 |
2p1686 Crankshaft Assembly--Field Installation
| 2P***86 | Crankshaft Assembly | 1 |
Crankshaft Bearing And Thrust Plate Replacement
2p6218 Crankshaft Group
| 2P***18 | Crankshaft Group; Crankshaft Group | 1 |
Crankshaft (2p6218 N/S)
| 2P***18 | Crankshaft Group; Crankshaft Group | 1 |
2p6216 Crankshaft Group
| 2P***16 | Crankshaft Group | 1 |
2p6216 Crankshaft Group--Type 2
| 2P***16 | Crankshaft Group | 1 |
2p6216 Crankshaft Group--Type 1
| 2P***16 | Crankshaft Group | 1 |
2p8774 Cylinder Block Assembly
| 2P***74 | Cylinder Block As | 1 |
2p6254 Cylinder Block Cover Group
| 2P***54 | Cylinder Block Cover Group | 1 |
2p6540 Cylinder Block Group
| 2P***40 | Cylinder Block Group; Cylinder Block Group | 1 |
9s8912 Connecting Rod And Piston Group--4 Required
| 9S***12 | Piston & Rod Group; Connecting Rod And Piston Group | 1 |
4n4028 Connecting Rod And Piston Group--4 Required
| 4N***28 | Piston & Rod Group; Connecting Rod And Piston Group | 1 |
2p6225 Crankshaft Seal Group
| 2P***25 | Seal Group-Crankshaft; Crankshaft Seal Group | 1 |
2p6223 Crankshaft Seal Group
| 2P***23 | Seal Group-Crankshaft; Crankshaft Seal Group | 1 |
2p6483 Crankshaft Seal Group
| 2P***83 | Seal Group-Crankshaft | 1 |
2p6224 Crankshaft Seal Group
| 2P***24 | Seal Group-Crankshaft; Crankshaft Seal Group | 1 |
Cooling System
Engine Oil Cooler (2p6215 N/S)
| 2P***15 | Cooler Group-Engine Oil; Oil Cooler Group Engine | 1 |
2p6508 Transmission Oil Cooler Group
| 2P***08 | Cooler Group-Transmission Oil; Transmission Oil Cooler Group | 1 |
Fumes Disposal (2p7446 N/S)
| 2P***46 | Fumes Disposal | 1 |
Fumes Disposal (2p7447 N/S)
| 2P***47 | Fumes Disposal Group | 1 |
6n1665 Fumes Disposal Group
| 6N***65 | Fumes Disposal Group | 1 |
Housing And Regulator (2p8163 N/S)
| 2P***63 | Housing & Regulator Group; Housing And Regulator Group | 1 |
3n3271 Housing And Regulator Group
| 3N***71 | Housing & Regulator Group; Housing And Regulator Group | 1 |
2p8169 Housing And Regulator Group
| 2P***69 | Housing & Regulator Group; Housing And Regulator Group | 1 |
2p8165 Housing And Regulator Group
| 2P***65 | Housing & Regulator Group; Housing And Regulator Group | 1 |
2p8168 Housing And Regulator Group
| 2P***68 | Housing & Regulator Group | 1 |
2p8167 Housing And Regulator Group
| 2P***67 | Housing & Regulator Group; Regulator And Housing Group | 1 |
2p8164 Housing And Regulator Group
| 2P***64 | Housing & Regulator Group; Regulator And Housing Group | 1 |
2p8166 Housing And Regulator Group
| 2P***66 | Housing And Regulator Group | 1 |
Water Lines (2p7741 N/S)--Pipe
| 2P***41 | Lines Group-Water; Water Lines Group-- Pipe | 1 |
2p7740 Water Lines Group--Elbow
| 2P***40 | Lines Group-Water; Water Lines Group--Elbow | 1 |
2p6188 Water Lines Group
| 2P***88 | Lines Group-Water; Water Lines Group | 1 |
2p661 Water Pump Group
| 2P***61 | Pump Group-Water; Water Pump Group | 1 |
2p662 Water Pump Group
| 2P***62 | Pump Group-Water; Water Pump Group | 1 |
Electrical System
2p1204 Alternator Group
| 2P***04 | Alternator Group | 1 |
5s9088 Alternator Assembly--24 Volt, 50 Ampere--Part 1 Of 2--Type 1
| 5S***88 | Alternator Group-Charging | 1 |
2p7836 Alternator Group--24 Volt, 19 Ampere
| 2P***36 | Alternator Group-Charging; Charging Alternator Group | 1 |
5s9088 Alternator Assembly--24 Volt, 50 Ampere--Part 1 Of 2--Type 2
| 5S***88 | Alternator Group-Charging | 1 |
5s9088 Alternator Assembly--24 Volt, 50 Ampere--Part 2 Of 2--Type 1
| 5S***88 | Alternator Group-Charging | 1 |
2p7836 Alternator Group--24 Volt, 50 Ampere
| 2P***36 | Alternator Group-Charging; Charging Alternator Group | 1 |
5s9088 Alternator Assembly--24 Volt, 50 Ampere--Part 2 Of 2--Type 2
| 5S***88 | Alternator Group-Charging | 1 |
4n7902 Motor Group--Delco-Remy--Part 1 Of 2
| 4N***02 | Electric Starting Motor Group | 1 |
4n7901 Starting Motor Group--Prestolite--Part 1 Of 2
| 4N***01 | Electric Starting Motor Group | 1 |
4n7901 Starting Motor Group--Prestolite--Part 2 Of 2
| 4N***01 | Electric Starting Motor Group | 1 |
4n7902 Motor Group--Delco-Remy--Part 2 Of 2
| 4N***02 | Electric Starting Motor Group | 1 |
Electric Starting Motor (4n7765 N/S)
| 4N***65 | Electric Starting Motor Group | 1 |
Gasket Kits
Glow Plug (5s8500 N/S)--24 Volt
| 5S***00 | Glow Plug Group; Glow Plug Group | 1 |
9s7976 Solenoid Switch Assembly
| 9S***76 | Solenoid As | 1 |
3p6 Starting Motor Group--Prestolite--Part 1 Of 2
| 3P***06 | Starting Motor Group-Electric; Electric Starting Motor Group-Prestolite | 1 |
2p2502 Motor Group--Delco-Remy--Part 1 Of 2
| 2P***02 | Starting Motor Group-Electric | 1 |
2p2502 Motor Group--Delco-Remy--Part 2 Of 2
| 2P***02 | Starting Motor Group-Electric | 1 |
3p6 Starting Motor Group--Prestolite--Part 2 Of 2
| 3P***06 | Starting Motor Group-Electric; Electric Starting Motor Group-Prestolite | 1 |
Electric Starting Motor (7s4090 N/S)--24 Volt
| 7S***90 | Starting Motor Group-Electric | 1 |
6n5123 Solenoid Switch Assembly--24 Volt
| 6N***23 | Switch As-Solenoid | 1 |
Front Structure
4n6508 Front Housing Cover Group
| 4N***08 | Cover Group-Front Housing; Front Housing Cover Group | 1 |
2p6528 Front Housing Cover Group
| 2P***28 | Cover Group-Front Housing; Front Housing Cover Group | 1 |
2p6529 Front Housing Cover Group
| 2P***29 | Cover Group-Front Housing; Front Housing Cover Group | 1 |
2p7831 Fan Drive Group
| 2P***31 | Drive Group-Fan; Fan Drive Group | 1 |
Support (3p62 N/S)
| 3P***62 | Engine Support Group | 1 |
2p7756 Support Group
| 2P***56 | Engine Support Group | 1 |
2p6498 Front Housing Fastener Group
| 2P***98 | Fastener Group-Front Housing; Front Housing Fastener Group | 1 |
2p7782 Front Gear Group--Timing
| 2P***82 | Front Gear Group | 1 |
2p6211 Front Gear Group--Timing
| 2P***11 | Front Gear Group; Front Gear Group-Timing | 1 |
2p6153 Front Housing Group
| 2P***53 | Front Housing; Front Housing Group | 1 |
2p9642 Front Gear Group--Timing
| 2P***42 | Gear Group-Front Timing | 1 |
2p9641 Front Housing Group
| 2P***41 | Housing Group-Front; Front Housing Group | 1 |
Crankshaft Hub (3p103 N/S)
| 3P***03 | Hub Group-Crankshaft | 1 |
Crankshaft Hub (2p8598 N/S)
| 2P***98 | Hub Group-Crankshaft; Crankshaft Hub Group | 1 |
Pulley (2p8607 N/S)
| 2P***07 | Pulley | 1 |
Pulley (2p8603 N/S)
| 2P***03 | Pulley Group | 1 |
Pulley (2p8605 N/S)
| 2P***05 | Pulley Group; Pulley Group | 1 |
Pulley (2p8606 N/S)
| 2P***06 | Pulley Group | 1 |
Pulley (2p8610 N/S)
| 2P***10 | Pulley Group | 1 |
Pulley Group (2p8604 N/S)
| 2P***04 | Pulley Group | 1 |
2p8604 Pulley Group
| 2P***04 | Pulley Group | 1 |
Pulley (2p8608 N/S)
| 2P***08 | Pulley Group | 1 |
Pulley (2p8609 N/S)
| 2P***09 | Pulley Group | 1 |
Support (2p7757 N/S)
| 2P***57 | Support Group | 1 |
2p7754 Support Group
| 2P***54 | Support Group | 1 |
Support (3p128 N/S)
| 3P***28 | Support Group | 1 |
2p7755 Support Group
| 2P***55 | Support Group-Engine | 1 |
2p7753 Support Group
| 2P***53 | Support Group-Engine; Front Engine Support Group | 1 |
Support (2p7751 N/S)
| 2P***51 | Support Group-Engine; Engine Support Group | 1 |
2p6246 Trunnion Group
| 2P***46 | Trunnion Group-Engine | 1 |
Fuel System And Governor
Accessory Drive (2p7705 N/S)
| 2P***05 | Accessory Drive | 1 |
Accessory Drive (2p7712 N/S)
| 2P***12 | Accessory Drive | 1 |
8n9527 Fuel Heater Changeover Group--Field Installation
| 8N***27 | Changeover Group | 1 |
9n867 Fuel Ratio Control Group
| 9N***67 | Control Group-Fuel Ratio | 1 |
6n2505 Torque Control Group
| 6N***05 | Control Group-Torque | 1 |
4n4510 Governor Cover Group
| 4N***10 | Cover Group-Governor; Governor Cover Group | 1 |
8n6389 Governor Cover Group
| 8N***89 | Cover Group-Governor | 1 |
1p2299 Fuel Filter Assembly
| 1P***99 | Filter As-Fuel; (Advanced Efficiency)(Secondary) | 1 |
4n3303 Fuel Filter Group
| 4N***03 | Filter Group-Fuel; Fuel Filter Group | 1 |
1p6835 Primary Fuel Filter Group
| 1P***35 | Filter Group-Primary Fuel; Primary Fuel Filter Group | 1 |
Fuel Filter (2p7714 N/S)
| 2P***14 | Fuel Filter | 1 |
5s9665 Fuel Filter Group
| 5S***65 | Fuel Filter | 1 |
Fuel Filter (5s9666 N/S)
| 5S***66 | Fuel Filter Group | 1 |
Fuel Injection Lines (2p7461 N/S)
| 2P***61 | Fuel Injection Lines; Fuel Injection Lines Group | 1 |
Fuel Injection Lines (2p7460 N/S)
| 2P***60 | Fuel Injection Lines | 1 |
6n1607 Fuel Injection Lines Group
| 6N***07 | Fuel Injection Lines Group | 1 |
4n3980 Fuel Injection Lines Group
| 4N***80 | Fuel Injection Lines Group | 1 |
Fuel Injection Lines (4n3374 N/S)
| 4N***74 | Fuel Injection Lines Group | 1 |
Fuel Injection Lines (6n728 N/S)
| 6N***28 | Fuel Injection Lines Group | 1 |
Fuel Injection Lines (6n727 N/S)
| 6N***27 | Fuel Injection Lines Group | 1 |
Fuel Injection Lines (6n1607 N/S)
| 6N***07 | Fuel Injection Lines Group | 1 |
3n3387 Fuel Injection Pump Group
| 3N***87 | Fuel Injection Pump Group | 1 |
Fuel Injection Lines (6n717 N/S)
| 6N***17 | Fuel Injection Valves And Lines Group | 1 |
6n717 Fuel Injection Lines Group
| 6N***17 | Fuel Injection Valves And Lines Group | 1 |
Fuel Priming Pump (5s2100 N/S)
| 5S***00 | Fuel Priming Pump | 1 |
Fuel Priming Pump (4n7878 N/S)--Type 1
| 4N***78 | Fuel Priming Pump | 1 |
Fuel Priming Pump (4n7878 N/S)--Type 2
| 4N***78 | Fuel Priming Pump | 1 |
Fuel Priming Pump (7s1251 N/S)--Type 2
| 7S***51 | Fuel Priming Pump Group | 1 |
2p7716 Fuel Priming Pump Group
| 2P***16 | Fuel Priming Pump Group | 1 |
Fuel Priming Pump (7s1251 N/S)--Type 1
| 7S***51 | Fuel Priming Pump Group | 1 |
7s5859 Governor And Fuel Injection Pump Group
| 7S***59 | Fuel Pump Housing And Governor | 1 |
7s5859 Governor And Fuel Injection Pump Group--Type 1
| 7S***59 | Fuel Pump Housing And Governor | 1 |
8s727 Governor And Fuel Injection Pump Group--Type 2
| 8S***27 | Fuel Pump Housing And Governor | 1 |
8s727 Governor And Fuel Injection Pump Group--Type 1
| 8S***27 | Fuel Pump Housing And Governor | 1 |
7s9334 Governor And Fuel Injection Pump Group
| 7S***34 | Fuel Pump Housing And Governor | 1 |
8s727 Governor And Fuel Injection Pump Group--Type 3
| 8S***27 | Fuel Pump Housing And Governor | 1 |
Governor And Fuel Injection Pump (8s720 N/S)
| 8S***20 | Fuel Pump Housing And Governor; Governor And Fuel Injection Pump | 1 |
7s5859 Governor And Fuel Injection Pump Group--Type 2
| 7S***59 | Fuel Pump Housing And Governor | 1 |
Governor And Fuel Injection Pump (1p8486 N/S)
| 1P***86 | Fuel Pump Housing And Governor | 1 |
7s8831 Fuel Pump Housing Group
| 7S***31 | Fuel Pump Housing Group | 1 |
4n4900 Fuel Ratio Control Group
| 4N***00 | Fuel Ratio Control Group | 1 |
2p6859 Fuel Transfer Pump Group
| 2P***59 | Fuel Transfer Pump | 1 |
7s5445 Fuel Transfer Pump Group (7s5108 N/S)
| 7S***45 | Fuel Transfer Pump Group | 1 |
4n4873 Fuel Transfer Pump Group (7s5108 N/S)
| 4N***73 | Fuel Transfer Pump Group | 1 |
7s4430 Fuel Transfer Pump Group
| 7S***30 | Fuel Transfer Pump Group | 1 |
4n6115 Governor And Fuel Injection Pump Group--Type 2
| 4N***15 | Gov & Fuel Inj Pump Group; Governor And Fuel Injection Pump Group | 1 |
4n6115 Governor And Fuel Injection Pump Group--Type 1
| 4N***15 | Gov & Fuel Inj Pump Group; Governor And Fuel Injection Pump Group | 1 |
6n5356 Governor And Fuel Injection Pump Group--Part 3 Of 4
| 6N***56 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 4 Of 4--Type 3
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
6n247 Governor And Fuel Injection Pump Group--Type 1
| 6N***47 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 1 Of 4--Type 1
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 1 Of 4--Type 3
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 3 Of 4--Type 3
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 1 Of 4--Type 2
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 4 Of 4--Type 2
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 2 Of 4--Type 3
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 2 Of 4--Type 4
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
6n1505 Governor And Fuel Injection Pump Group--Type 1
| 6N***05 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 3 Of 4--Type 1
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 3 Of 4--Type 4
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
Governor And Fuel Injection Pump (6n1505 N/S)--Type 2
| 6N***05 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 2 Of 4--Type 1
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 4 Of 4--Type 1
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
6n243 Governor And Fuel Injection Pump Group
| 6N***43 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 3 Of 4--Type 2
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
6n5356 Governor And Fuel Injection Pump Group--Part 4 Of 4
| 6N***56 | Gov & Fuel Inj Pump Group | 1 |
6n284 Governor And Fuel Injection Pump Group
| 6N***84 | Gov & Fuel Inj Pump Group | 1 |
6n5356 Governor And Fuel Injection Pump Group--Part 2 Of 4
| 6N***56 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 4 Of 4--Type 4
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
4n6116 Governor And Fuel Injection Pump Group--Field Installation
| 4N***15 | Gov & Fuel Inj Pump Group; Governor And Fuel Injection Pump Group | 1 |
| 4N***16 | Gov & Fuel Inj Pump Group | 1 |
6n281 Governor And Fuel Injection Pump Group
| 6N***81 | Gov & Fuel Inj Pump Group; Governor And Fuel Injection Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 2 Of 4--Type 2
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 1 Of 4--Type 4
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
6n277 Governor And Fuel Injection Pump Group
| 6N***77 | Gov & Fuel Inj Pump Group; Governor And Fuel Injection Pump Group | 1 |
6n247 Governor And Fuel Injection Pump Group--Type 2
| 6N***47 | Gov & Fuel Inj Pump Group | 1 |
6n5356 Governor And Fuel Injection Pump Group--Part 1 Of 4
| 6N***56 | Gov & Fuel Inj Pump Group | 1 |
6n279 Governor And Fuel Injection Pump Group
| 6N***79 | Gov & Fuel Inj Pump Group | 1 |
Governor And Fuel Injection Pump (6n2370 N/S)--Type 1
| 6N***70 | Governor & Pump Group | 1 |
Governor And Fuel Injection Pump (6n2370 N/S)--Type 2
| 6N***70 | Governor & Pump Group | 1 |
6n5525 Governor And Fuel Injection Pump Group--Part 4 Of 4--Type 3
| 6N***25 | Governor And Fuel Injection Pump Group | 1 |
6n5525 Governor And Fuel Injection Pump Group--Part 4 Of 4--Type 2
| 6N***25 | Governor And Fuel Injection Pump Group | 1 |
6n1504 Governor And Fuel Injection Pump Group--Type 2
| 6N***04 | Governor And Fuel Injection Pump Group | 1 |
6n1504 Governor And Fuel Injection Pump Group--Type 1
| 6N***04 | Governor And Fuel Injection Pump Group | 1 |
4n4200 Governor And Fuel Injection Pump Group
| 4N***00 | Governor And Fuel Injection Pump Group | 1 |
6n283 Governor And Fuel Injection Pump Group
| 6N***83 | Governor And Fuel Injection Pump Group | 1 |
4n4201 Governor And Fuel Injection Pump Group
| 4N***01 | Governor And Fuel Injection Pump Group | 1 |
Governor And Fuel Injection Pump (6n2477 N/S)--Type 1
| 6N***77 | Governor And Fuel Injection Pump Group | 1 |
6n5525 Governor And Fuel Injection Pump Group--Part 3 Of 4--Type 2
| 6N***25 | Governor And Fuel Injection Pump Group | 1 |
6n244 Governor And Fuel Injection Pump Group--Type 2
| 6N***44 | Governor And Fuel Injection Pump Group | 1 |
6n5525 Governor And Fuel Injection Pump Group--Part 1 Of 4--Type 1
| 6N***25 | Governor And Fuel Injection Pump Group | 1 |
6n5525 Governor And Fuel Injection Pump Group--Part 3 Of 4--Type 1
| 6N***25 | Governor And Fuel Injection Pump Group | 1 |
6n282 Governor And Fuel Injection Pump Group
| 6N***82 | Governor And Fuel Injection Pump Group | 1 |
6n5525 Governor And Fuel Injection Pump Group--Part 2 Of 4--Type 1
| 6N***25 | Governor And Fuel Injection Pump Group | 1 |
6n275 Governor And Fuel Injection Pump Group--Replaced By 6n2476
| 6N***75 | Governor And Fuel Injection Pump Group | 1 |
6n5525 Governor And Fuel Injection Pump Group--Part 2 Of 4--Type 2
| 6N***25 | Governor And Fuel Injection Pump Group | 1 |
6n5525 Governor And Fuel Injection Pump Group--Part 3 Of 4--Type 3
| 6N***25 | Governor And Fuel Injection Pump Group | 1 |
6n285 Governor And Fuel Injection Pump Group
| 6N***85 | Governor And Fuel Injection Pump Group | 1 |
6n5525 Governor And Fuel Injection Pump Group--Part 1 Of 4--Type 2
| 6N***25 | Governor And Fuel Injection Pump Group | 1 |
4n2914 Governor And Fuel Injection Pump Group--Type 1
| 4N***14 | Governor And Fuel Injection Pump Group | 1 |
4n4212 Governor And Fuel Injection Pump Group
| 4N***12 | Governor And Fuel Injection Pump Group | 1 |
6n5525 Governor And Fuel Injection Pump Group--Part 4 Of 4--Type 1
| 6N***25 | Governor And Fuel Injection Pump Group | 1 |
6n244 Governor And Fuel Injection Pump Group--Type 1
| 6N***44 | Governor And Fuel Injection Pump Group | 1 |
6n287 Governor And Fuel Injection Pump Group
| 6N***87 | Governor And Fuel Injection Pump Group | 1 |
6n274 Governor And Fuel Injection Pump Group
| 6N***74 | Governor And Fuel Injection Pump Group | 1 |
6n5525 Governor And Fuel Injection Pump Group--Part 1 Of 4--Type 3
| 6N***25 | Governor And Fuel Injection Pump Group | 1 |
4n2914 Governor And Fuel Injection Pump Group--Type 2
| 4N***14 | Governor And Fuel Injection Pump Group | 1 |
6n5525 Governor And Fuel Injection Pump Group--Part 2 Of 4--Type 3
| 6N***25 | Governor And Fuel Injection Pump Group | 1 |
6n2476 Governor And Fuel Injection Pump Group--Field Installation
| 1P***36 | Gasket; (Fuel Priming Pump)(Fuel Priming Pump) | 1 |
| 1P***53 | Stop Bar .250" (6.35 mm) Thick | 1 |
| 2H***34 | Seal Transfer Pump To Plate | 1 |
Governor And Fuel Injection Pump (6n2477 N/S)--Type 2
| 6N***77 | Governor And Fuel Injection Pump Group | 1 |
4n2914 Governor And Fuel Injection Pump Group
| 4N***14 | Governor And Fuel Injection Pump Group | 1 |
6n288 Governor And Fuel Injection Pump Group
| 6N***88 | Governor And Fuel Injection Pump Group | 1 |
7s9332 Governor Group--Part 2 Of 2--Type 5
| 7S***32 | Governor Group | 1 |
7s9332 Governor Group--Part 1 Of 2--Type 3
| 7S***32 | Governor Group | 1 |
7s9332 Governor Group--Part 1 Of 2--Type 2
| 7S***32 | Governor Group | 1 |
7s9333 Governor Group--Part 2 Of 2--Type 1
| 7S***33 | Governor Group | 1 |
7s9332 Governor Group--Part 2 Of 2--Type 2
| 7S***32 | Governor Group | 1 |
7s9332 Governor Group--Part 1 Of 2--Type 1
| 7S***32 | Governor Group | 1 |
7s9332 Governor Group--Part 2 Of 2--Type 1
| 7S***32 | Governor Group | 1 |
7s9332 Governor Group--Part 1 Of 2--Type 4
| 7S***32 | Governor Group | 1 |
7s9333 Governor Group--Part 2 Of 2--Type 4
| 7S***33 | Governor Group | 1 |
7s9332 Governor Group--Part 2 Of 2--Type 3
| 7S***32 | Governor Group | 1 |
7s9333 Governor Group--Part 1 Of 2--Type 5
| 7S***33 | Governor Group | 1 |
7s9333 Governor Group--Part 1 Of 2--Type 1
| 7S***33 | Governor Group | 1 |
7s9333 Governor Group--Part 2 Of 2--Type 2
| 7S***33 | Governor Group | 1 |
7s9333 Governor Group--Part 1 Of 2--Type 3
| 7S***33 | Governor Group | 1 |
7s9333 Governor Group--Part 1 Of 2--Type 4
| 7S***33 | Governor Group | 1 |
7s9333 Governor Group--Part 2 Of 2--Type 5
| 7S***33 | Governor Group | 1 |
7s9332 Governor Group--Part 1 Of 2--Type 5
| 7S***32 | Governor Group | 1 |
7s9333 Governor Group--Part 1 Of 2--Type 2
| 7S***33 | Governor Group | 1 |
7s9333 Governor Group--Part 2 Of 2--Type 3
| 7S***33 | Governor Group | 1 |
7s9332 Governor Group--Part 2 Of 2--Type 4
| 7S***32 | Governor Group | 1 |
8s5549 Torque Control Group--Type 1
| 8S***49 | Governor Torque Spring | 1 |
8s5549 Torque Control Group--Type 2
| 8S***49 | Governor Torque Spring | 1 |
8s6099 Torque Control Group--Type 2
| 8S***99 | Governor Torque Spring | 1 |
8s6099 Torque Control Group--Type 1
| 8S***99 | Governor Torque Spring | 1 |
Governor And Fuel Injection Pump (7s5858 N/S)
| 7S***58 | Injection Pump & Gov Group; Governor And Fuel Injection Pump Group | 1 |
9h2256 Fuel Priming Pump Group
| 9H***56 | Pump Assembly | 1 |
1n4854 Fuel Injection Pump Group
| 1N***54 | Pump Group-Fuel Injection | 1 |
4n3287 Fuel Priming Pump Group
| 4N***87 | Pump Group-Fuel Priming; Pump Group-Fuel Priming | 1 |
4n4314 Fuel Priming Pump Group
| 4N***14 | Pump Group-Fuel Priming; Fuel Priming Pump Group | 1 |
7s4429 Fuel Transfer Pump Group
| 7S***29 | Pump Group-Fuel Transfer; Fuel Transfer Pump Group | 1 |
4n4864 Fuel Transfer Pump Group--Type 1
| 4N***64 | Pump Group-Fuel Transfer | 1 |
4n4864 Fuel Transfer Pump Group--Type 2
| 4N***64 | Pump Group-Fuel Transfer | 1 |
7s7813 Torque Control Group
| 7S***13 | Rack Stop | 1 |
9s3312 Torque Control Group
| 9S***12 | Rack Stop Group | 1 |
Service Meter (9s8923 N/S)
| 9S***23 | Service Meter | 1 |
Service Meter (9s7993 N/S)
| 9S***93 | Service Meter | 1 |
Service Meter (9s5141 N/S)
| 9S***41 | Service Meter | 1 |
Service Meter Drive (2p6158 N/S)
| 2P***58 | Service Meter Drive | 1 |
Service Meter (2p6478 N/S)
| 2P***78 | Service Meter Group | 1 |
Torque Control (4n283 N/S)--Type 1
| 4N***83 | Torque Control | 1 |
Torque Control (4n283 N/S)--Type 2
| 4N***83 | Torque Control | 1 |
4n9242 Torque Control Group
| 4N***42 | Torque Control Group | 1 |
6n453 Torque Control Group
| 6N***53 | Torque Control Group | 1 |
4n3880 Torque Control Group
| 4N***80 | Torque Control Group | 1 |
6n509 Torque Control Group
| 6N***09 | Torque Control Group | 1 |
6n581 Torque Control Group
| 6N***81 | Torque Control Group | 1 |
9s3423 Torque Control Group
| 9S***23 | Torque Spring Group | 1 |
6n7621 Water Separator Group--Field Installation
| 6N***21 | Water Separator Group | 1 |
Intake And Exhaust System
2p8712 Air Compressor Group
| 2P***12 | Air Compressor Group; Air Compressor Group | 1 |
2p9613 Air Compressor Group
| 2P***13 | Air Compressor Group; Air Compressor Group | 1 |
2p8709 Air Compressor Group
| 2P***09 | Air Compressor Group | 1 |
2p8711 Air Compressor Group
| 2P***11 | Air Compressor Group | 1 |
2p7794 Air Compressor Group
| 2P***94 | Air Compressor Group | 1 |
2p9614 Air Compressor Group
| 2P***14 | Air Compressor Group | 1 |
2p8710 Air Compressor Group
| 2P***10 | Air Compressor Group; Air Compressor Group | 1 |
2p7795 Air Compressor Group
| 2P***95 | Air Compressor Group; Air Compressor Group | 1 |
2p6844 Air Lines Group
| 2P***44 | Air Lines Group | 1 |
Air Lines (2p6837 N/S)
| 2P***37 | Air Lines Group | 1 |
Air Lines (3p88 N/S)
| 3P***88 | Air Lines Group | 1 |
2p6832 Air Lines Group
| 2P***32 | Air Lines Group | 1 |
4n9585 Exhaust Manifold Fastener Group
| 4N***85 | Fastener Group-Exhaust Manifold; Exhaust Manifold Fastener Group | 1 |
2p6533 Exhaust Manifold Fastener Group
| 2P***33 | Fastener Group-Exhaust Manifold; Exhaust Manifold Fastener Group | 1 |
4n9584 Exhaust Manifold Fastener Group
| 4N***84 | Fastener Group-Exhaust Manifold; Exhaust Manifold Fastener Group | 1 |
Air Lines (2p7337 N/S)
| 2P***37 | Lines Group-Air; Air Lines Group | 1 |
2p7337 Air Lines Group
| 2P***37 | Lines Group-Air; Air Lines Group | 1 |
2p6843 Air Lines Group
| 2P***43 | Lines Group-Air; Air Lines Group | 1 |
Air Lines (2p6843 N/S)
| 2P***43 | Lines Group-Air; Air Lines Group | 1 |
Air Lines (2p6839 N/S)
| 2P***39 | Lines Group-Air; Air Lines Group | 1 |
Air Lines (2p6840 N/S)
| 2P***40 | Lines Group-Air; Air Lines Group | 1 |
4n8056 Air Compressor Lines Group
| 4N***56 | Lines Group-Air Compressor; Air Compressor Lines Group | 1 |
Air Compressor Lines (2p7796 N/S)
| 2P***96 | Lines Group-Air Compressor; Air Compressor Lines Group | 1 |
4n3924 Turbocharger Oil Lines Group
| 4N***24 | Lines Group-Turbocharger Oil; Turbocharger Oil Lines Group | 1 |
4n3923 Turbocharger Oil Lines Group
| 4N***23 | Lines Group-Turbocharger Oil; Turbocharger Oil Lines Group | 1 |
Exhaust Manifold (2p6571 N/S)
| 2P***71 | Manifold Group-Exhaust; Exhaust Manifold Group | 1 |
Exhaust Manifold (2p6570 N/S)
| 2P***70 | Manifold Group-Exhaust; Exhaust Manifold Group | 1 |
Exhaust Pipe (2p7350 N/S)
| 2P***50 | Pipe Group-Exhaust; Exhaust Pipe Group | 1 |
2p7349 Exhaust Pipe Group
| 2P***49 | Pipe Group-Exhaust; Exhaust Pipe Group | 1 |
3p138 Exhaust Pipe Group
| 3P***38 | Pipe Group-Exhaust; Exhaust Pipe Group | 1 |
2p7351 Exhaust Pipe Group
| 2P***51 | Pipe Group-Exhaust; Exhaust Pipe Group | 1 |
4n6859 Turbocharger Group
| 4N***59 | Turbocharger Group | 1 |
1p9136 Turbocharger Group (1p9137 N/S)
| 1P***36 | Turbocharger Group | 1 |
Turbocharger (4n6857 N/S)
| 4N***57 | Turbocharger Group; Turbocharger Group | 1 |
Turbocharger (4n6856 N/S)
| 4N***56 | Turbocharger Group; Turbocharger Group | 1 |
2p8840 Turbocharger Group (1p8533 N/S)
| 2P***40 | Turbocharger Group | 1 |
4n6858 Turbocharger Group
| 4N***58 | Turbocharger Group | 1 |
1p35 Turbocharger Group (1p3844 N/S)
| 1P***35 | Turbocharger Group | 1 |
2p7430 Turbocharger Oil Lines Group
| 2P***30 | Turbocharger Oil Lines Group | 1 |
2p7353 Turbocharger Oil Lines Group
| 2P***53 | Turbocharger Oil Lines Group | 1 |
Lower Structure
2p6186 Oil Pan Fastener Group
| 2P***86 | Fastener Group-Oil Pan; Oil Pan Fastener Group | 1 |
Oil Pan Fastener (2p6189 N/S)
| 2P***89 | Fastener Group-Oil Pan; Oil Pan Fastener Group | 1 |
2p6491 Oil Level Gauge Group
| 2P***91 | Gauge Group-Oil Level (Dipstick) | 1 |
2p6155 Oil Pan Group
| 2P***55 | Pan Group-Oil; Oil Pan Group | 1 |
Oil Pan (2p6175 N/S)
| 2P***75 | Pan Group-Oil; Pan Gp-Engine Oil | 1 |
Lubrication System
1p4244 Breather Group
| 1P***44 | Breather Group | 1 |
4n9821 Oil Filler Group
| 4N***21 | Filler Group-Oil; Oil Filler Group | 1 |
4n4817 Oil Filler Group
| 4N***17 | Filler Group-Oil; Oil Filler Group | 1 |
2p6855 Oil Filler Group
| 2P***55 | Filler Group-Oil | 1 |
2p6475 Oil Filter Group
| 2P***75 | Filter Group-Engine Oil; Oil Filter Group (10z1 ~ 10z7023) | 1 |
2p6525 Oil Filter Group
| 2P***25 | Filter Group-Oil | 1 |
4n3325 Fumes Disposal Group
| 4N***25 | Fumes Disposal Group; Fumes Disposal Group | 1 |
2p6494 Oil Level Gauge Group
| 2P***94 | Gauge Group-Oil Level (Dipstick); Oil Lever Gauge Group | 1 |
2p6512 Oil Lines Group
| 2P***12 | Lines Group-Engine Oil; Engine Oil Lines Group | 1 |
Oil Lines (2p6513 N/S)
| 2P***13 | Lines Group-Engine Oil; Engine Oil Lines Group | 1 |
Oil Lines (2p6862 N/S)
| 2P***62 | Oil Lines | 1 |
2p1785 Gear Pump Group--Type 1
| 2P***85 | Pump Group-Engine Oil | 1 |
2p1784 Oil Pump Group
| 2P***84 | Pump Group-Engine Oil; Engine Oil Pump Group | 1 |
2p1785 Gear Pump Group--Type 2
| 2P***85 | Pump Group-Engine Oil | 1 |
2p7830 Gear Pump Group
| 2P***30 | Pump Group-Gear | 1 |
Oil Pump (2p6537 N/S)
| 2P***37 | Pump Group-Oil; Engine Oil Pump Group | 1 |
Rear Structure
7s7878 Flywheel Group
| 7S***78 | Flywheel Group; Flywheel Group | 1 |
1p9581 Flywheel Group
| 1P***81 | Flywheel Group; Flywheel Group | 1 |
7s7877 Flywheel Group
| 7S***77 | Flywheel Group; Flywheel Group | 1 |
7s7753 Flywheel Group
| 7S***53 | Flywheel Group; Flywheel Group | 1 |
5s3451 Flywheel Group
| 5S***51 | Flywheel Group; Flywheel Group | 1 |
Flywheel Housing Cover (2p6130 N/S)
| 2P***30 | Flywheel Housing Cover | 1 |
2p6121 Flywheel Housing Cover Group
| 2P***21 | Flywheel Housing Cover Group | 1 |
Flywheel Housing Cover (2p6121 N/S)
| 2P***21 | Flywheel Housing Cover Group | 1 |
Flywheel Housing (2p9644 N/S)
| 2P***44 | Flywheel Housing Group | 1 |
6n4595 Flywheel Housing Group
| 6N***95 | Flywheel Housing Group | 1 |
2p6813 Flywheel Housing Group
| 2P***13 | Flywheel Housing Group | 1 |
2p6166 Flywheel Housing Group
| 2P***66 | Housing Group-Flywheel; Flywheel Housing Group | 1 |
2p6119 Flywheel Housing Group
| 2P***19 | Housing Group-Flywheel; Flywheel Housing Group | 1 |
Flywheel Housing (2p6129 N/S)
| 2P***29 | Housing Group-Flywheel; Flywheel Housing Group | 1 |
Upper Structure
2p6514 Valve Mechanism Cover Group
| 2P***14 | Cover Group-Valve Mechanism; Valve Mechansim Cover Group | 1 |
4n7444 Cylinder Head Assembly
| 4N***44 | Cylinder Head Assembly | 1 |
2p6484 Cylinder Head Group
| 2P***84 | Cylinder Head Group; Cylinder Head Group | 1 |
2p6274 Cylinder Head Assembly
| 2P***74 | Cylinder Head Group; Cylinder Head Group | 1 |
2p6544 Cylinder Head Fastener Group
| 2P***44 | Fastener Group-Cylinder Head; Cylinder Head Fastener Group | 1 |
1p3840 Lifting Eye Group
| 1P***40 | Lifting Group; Lifting Eye Group | 1 |
2p6524 Valve Mechanism Group
| 2P***24 | Valve-Mechanism Group; Valve Mechanism Group | 1 |
518 serial number reference
On these 1970s-80s 518 skidders the PIN/serial plate is a riveted metal tag on the main frame, generally near the operator's station or engine compartment. Check there first and clean off rust or dirt if numbers are faded, then confirm exact position against the operator's manual for your serial range. The plate reads as a 3-character prefix (letters/numbers identifying model and assembly plant) followed by a 5-digit sequence number that tracks build order within that prefix block.
| Prefix | Identifies | Notes |
|---|---|---|
| 50S | USA-built 518 wheel skidder, cable configuration, powered by 3304 turbocharged 4-cylinder engine | Early USA production run. Parts catalog lists this block at roughly 50S01289-03229. Introduced early 1970s. |
| 55U | USA-built 518 grapple skidder, power-shift, powered by 3304 turbocharged 4-cylinder engine | USA grapple-equipped variant, later production than 50S. Catalog ranges vary by source: seen from roughly 55U00272-up through 55U00669-up depending on catalog edition. |
| 94U | Canada-built 518 wheel skidder, cable configuration, powered by 3304 turbocharged 4-cylinder engine | Canadian plant production started 1973. Catalog cites 94U00287-00690 as one production block, with further blocks extending to roughly 94U02500 and up. |
| 95U | Canada-built 518 grapple skidder, power-shift, powered by 3304 turbocharged 4-cylinder engine | Two documented sub-ranges: 95U00154-03199 and 95U03200-and-up (a later production revision). Range boundaries confirmed directly against catalog titles. |
Frequently asked questions
What engine powers the Caterpillar 518 skidder?
The Cat 3304 turbocharged four-cylinder diesel (about 7.0 L / 425-427 cu in), with mechanical unit injection and a mechanical governor; there is no ECM or digital fault code system. Early production used the D330 engine designation before Cat's 3304 naming took over. The base skidder is rated about 120 flywheel hp (89.5 kW); Cable and Grapple configurations are rated about 130 hp (97 kW); later Series II grapple units offered a dual 130/145 hp rating.
What is the operating weight of the Caterpillar 518?
It varies by configuration. The base skidder runs about 9,698 kg (21,380 lb), the Cable Skidder about 10,249 kg (22,597 lb), and the Grapple Skidder, the heaviest of the three, about 12,025 kg (26,511 lb).
What replaced the Caterpillar 518?
There is no clearly documented direct factory successor. The 518C carries the model name forward but is a separate, later design with its own specifications and parts catalogs, not confirmed as a direct engineering replacement for this machine. Within Caterpillar's period skidder range, the 525 sits above the 518 in size and power and is commonly the step-up machine buyers move to in the used market.
What 518 owners discuss
What engine does the Cat 518 skidder run, and what quirks show up as it ages?
The 518 uses the Caterpillar 3304 diesel, turbocharged four-cylinder, generally rated in the 120-130 flywheel hp (89-97 kW) range depending on serial prefix and rating (Cat literature for this engine family also carries a D330/D333 designation, so treat exact horsepower as varying by configuration and verify against the serial plate). A recurring complaint is vibration and noise that develops while oil pressure, coolant temperature, and exhaust color all stay normal. The usual cause is the vibration damper going bad, or the balance shafts low in the block falling out of time with each other; only one shaft needs to slip for the vibration to appear. Check damper condition and balance-shaft timing before suspecting main or rod bearings.
Why does the transmission slip or overheat, and what should the fluid and pressures look like?
Powershift clutch packs on the 518 are sensitive to water-cut oil. Milky or foamy transmission fluid means water intrusion, and the first symptom is usually clutch slip in first gear under load before it spreads to other ranges. Run TO-4 rated oil (Cat's TDTO meets this spec) and change the transmission filter on the same interval, since the pressure-side filter O-rings harden and crack with age and can leak or shed debris into the circuit. Normal transmission pressure at the filter runs around 400 psi (2760 kPa) hot; a low reading with a slip complaint points to the modulator valve or a worn charging pump before you open up the clutches. Warm engine oil pressure on the 3304 should read no higher than about 90 psi (620 kPa), commonly closer to 50 psi (345 kPa) — pressure well above that after an overhaul usually means the oil pump relief valve is stuck.
What goes wrong with the cable winch on the 518, and how do owners keep it healthy?
Cable-arch 518s carry a Gearmatic winch on the rear. The clutch is hydraulically applied through a line running to the end plate, and drum stop is a mechanical external brake band actuated by a slave cylinder off a large adjustment nut at the base of the winch. Left idle, rust and corrosion in the clutch/brake area keep the drum from releasing fully, so it won't free-spool. A shop doing brake work can reline the band and clutch with woven lining, and the slave and control cylinders rebuild the same way as automotive brake cylinders, using silicone brake fluid since it does not draw moisture. Winches that sit unused for long stretches are the ones that seize up; keep it covered and cycle it periodically during storage.
The gauges go dead or the machine won't start — where does that trace back to on a 518?
On these machines, gauge and no-start complaints trace back to wiring more often than to the senders themselves. A known weak point is the wire off the fuse just above the starter switch on the dash panel; when that connection works loose, the whole panel loses power. If the gauges kick on with the start-up cycle then drop back to zero, suspect the wiring run between the sending units and the gauges, or the power feed into the instrument panel, before condemning the gauges or senders themselves.
Why won't the engine shut off when the key is turned, and is that dangerous?
On the 518, the throttle pedal doubles as the shutdown control for the 3304 injection pump: pulling the pedal up and back toward the operator trips the shutdown lever and cuts fuel at the pump, rather than relying on a separate electric kill switch. Owners chasing a machine that will not shut off usually find the linkage between pedal and pump binding, stretched, or disconnected, not an electrical fault. If the linkage checks out and the engine still will not die on pedal pull, treat it as a runaway risk — unmetered oil or fuel reaching the intake — and have your dealer verify the shutdown linkage and turbocharger seals before running the machine again.
As a wheel-type skidder, where does the 518 show its wear, if not on tracks?
Wear on a wheel machine like the 518 concentrates in the articulation joint, axles, and tires rather than track components. The center trunnion (oscillation bearing) and king-pin bushings at the articulation joint carry the twisting load on every turn; looseness there shows up as wheel shimmy or a wandering feel and is one of the first things checked on a used machine. Planetary final drives at each wheel hub are the other common wear point — listen for gear noise and check hub oil for metal at service intervals. Tire wear runs heavy given skidding loads, and used-market listings routinely price 518s by remaining tread percentage on this model's common tire sizes, since a full set of tires is a major cost relative to the machine's value.
What should a buyer walk through before purchasing a used Cat 518?
Confirm the center articulation section is tight with no play when the machine is rocked side to side. Check tire tread percentage and chain condition if chains are included. Cycle the winch (cable models) or grapple and arch (grapple models) through a full range and watch for slow or uneven response. Check for leaks at the final drives, transmission case, and hydraulic lines. Verify the park and service brakes hold and that the air system builds and holds pressure without a slow bleed-down. Cross-check the hour meter against wear on the pedals, seat, and general condition, since meters on machines this age are frequently disconnected or reset and should not be trusted alone. A compression or leak-down check on the 3304 plus a transmission pressure test is worth the cost before committing to a purchase. If brakes or steering show any softness on the test drive, have your dealer verify before putting the machine to work.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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