Caterpillarforest productstree harvester
Caterpillar HA770
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar HA770 is the '770 Wheel Feller Buncher' in Cat's Forest Products line: a wheeled, articulated-frame feller buncher built to fell and bunch trees for skidder pickup, tracing back to the Hydro-Ax 770 that Caterpillar folded into its forestry business. It runs on a hydrostatic propel drive off a piston pump rather than a torque-converter powershift, steers through an articulated frame with an oscillating front axle and a fixed rear axle, and brakes through oil-cooled discs built into the axle planetary final drives. The felling head is direct-mounted on a leveling frame at the boom tip and carries a carbide-tipped saw disc, tilted through a dedicated linkage rather than a boom-mounted knuckle joint. The operator rides in an enclosed ROPS cab behind a liquid-cooled, mechanically governed diesel with a reversible cooling fan. Only one production series is documented for this model, under serial prefix HAB, with tire-and-rim options for different ground conditions; exact engine model, operating weight, dimensions, and production years are not published for this specific unit in accessible records - confirm those from the machine's own engine tag and full PIN.
Caterpillar's wheel feller buncher lineup continued past this generation under other number ranges, including the 533/543/550/554/570/574/580 series and later the C6.6 ACERT-powered 553C/563C/573C generation, though none of these stands as a confirmed direct successor to the HA770. What sets the HA770 apart inside that broader history is how early it sits: a mechanically governed engine with no electronic control module, and an electrical system built around a conventional circuit-breaker panel instead of a diagnostic module group, so there is no scan-tool fault-code list on this machine. That places it in the pre-electronic service era, where gauges and warning lamps are the only diagnostic layer. In the used and parts market the HA770 is a low-volume, lightly documented machine: it does not appear in the major online spec listings, so buyers and parts sourcing both depend on the serial prefix and direct dealer or PIN verification rather than a published spec sheet. That obscurity also means a good used saw-disc head, final drive, or hydrostatic pump/motor set carries real value to an owner keeping an existing unit running, since replacement is not a simple catalog lookup.
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 HA770 specifications
Engine
| Engine model | Not documented for this unit in any published dealer or spec-aggregator source. Confirm the exact engine family and arrangement number from the machine's own engine ID plate or full PIN with your dealer. |
| Gross/net power | Not published for this model. |
| Displacement | Not published for this model. |
| Cylinders | Not published for this model. |
| Emissions tier | Not published for this model. |
Weights
| Operating weight | Not published for this model. No spec-aggregator or dealer source lists a figure for the HA770 specifically. |
| Shipping weight | Not published for this model. |
| Ground pressure | Not applicable / not published — this is a wheeled (tired) machine, not a tracked one. |
Dimensions
| Chassis layout | Articulated wheeled frame with an oscillating front axle and a fixed rear axle, per the machine's own factory parts breakdown. Numeric wheelbase is not published. |
| Transport length / width / height | Not published for this model. |
| Wheelbase / track gauge | Not published numerically. Multiple tire-and-rim option groups exist for this machine, consistent with a choice of tire sizes, but no dimension figures are documented. |
| Ground clearance | Not published for this model. |
Performance
| Propel system | Hydrostatic propel drive (piston-pump driven, with a dedicated propel pump-control valve), not a torque-converter powershift, per the machine's own factory power-train breakdown. |
| Travel speed | Not published for this model. |
| Felling head | Direct-mounted, hydraulically tilted felling head with a carbide-tipped saw disc, actuated through a dedicated felling-head linkage and tilt cylinder. Not a boom-mounted knuckle head. |
| Braking | Oil-cooled disc brakes integrated with the axle planetary final drives, with a charged brake accumulator, per the factory power-train breakdown. |
| Gradeability | Not published for this model. |
Service capacities (summary)
| Fuel tank | Not published for this model. A dedicated fuel tank group exists in the factory parts breakdown, but no capacity figure is documented. |
| Hydraulic system | Not published for this model. A dedicated hydraulic tank group exists, but no capacity figure is documented. |
| Engine oil | Not published for this model. |
| Cooling system | Not published for this model. The machine uses a liquid-cooled engine with a radiator and reversible cooling fan, per the factory breakdown, but no coolant capacity figure is documented. |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
HA770 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | Not published in any accessible OEM literature for this serial range (HAB00001-UP). Confirm with the machine's Operation and Maintenance Manual or a Cat dealer before service. | Cat diesel engine oil (DEO) grade suited to the engine actually fitted to this chassis; viscosity chosen by ambient temperature at start-up. Confirm the exact engine and oil grade with your dealer, since online literature for this machine does not specify it. |
| Cooling system | Not documented for this exact machine in available sources. Verify with the OMM or dealer. | Cat ELC (Extended Life Coolant) or an equivalent heavy-duty ethylene-glycol coolant meeting Cat's coolant specification, mixed to local climate protection needs. |
| Fuel tank | Not documented for this exact machine in available sources. Verify with the OMM or dealer. | Ultra low sulfur No. 2-D diesel for normal service; No. 1-D diesel or a winter blend in cold climates, per Cat's standard fuel guidance. |
| Hydrostatic drive system (charge/case circuit) | Not documented for this exact machine in available sources. Verify with the OMM or dealer. | Cat TDTO (Transmission/Drive Train Oil) or an equivalent drive-train oil suited to a hydrostatic propel system; viscosity grade selected by ambient operating temperature. |
| Front axle/differential | Not documented for this exact machine in available sources. Verify with the OMM or dealer. | Cat TDTO or an axle/gear oil meeting the axle manufacturer's spec; grade by climate. |
| Rear axle/differential | Not documented for this exact machine in available sources. Verify with the OMM or dealer. | Cat TDTO or an axle/gear oil meeting the axle manufacturer's spec; grade by climate. |
| Hydraulic system and tank (including felling-head circuit) | Not documented for this exact machine in available sources. Verify with the OMM or dealer. | Cat HYDO Advanced or an equivalent anti-wear hydraulic oil; viscosity grade selected by ambient temperature, since the felling-head accumulator arms and boom circuit run off this same reservoir. |
| Grease (chassis, felling-head pivots and accumulator arms) | Not applicable (grease points serviced by quantity/interval, not a refill volume). | Cat Multipurpose Grease (or an equivalent NLGI-graded lithium-complex grease) for chassis, boom, and felling-head accumulator-arm pivots. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar HA770 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the HA770 beyond the schedule
Predictive Maintenance & Fluid Analysis
The HA770's exact engine is not confirmed for this serial range, so oil sampling matters more than following a generic change chart. Pull engine oil and coolant samples on a fixed schedule and trend wear metal instead of assuming a factory-listed capacity. Sample hydraulic oil from the shared felling-head and accumulator-arm circuit, since saw-disc shock loads push debris back into the reservoir faster than normal machine duty. Track hydrostatic charge pressure over time; a slow drop signals charge-pump wear well before the drive feels weak in the field.
Corrective & Common Repairs
Cracked saw-disc plates near the tooth pockets, not just chipped carbide, are the most serious felling-head repair on this machine and pull the head from service until replaced. Front oscillating-axle pivot pins and center-pin articulation bushings take heavy side load every time the head swings a loaded tree, and they are the usual source of steering play or knocking on a tired unit. Hydrostatic propel complaints on machines of this type typically trace to a worn charge pump or contaminated hydraulic oil, not the drive motors themselves.
Overhaul & Rebuild Points
Planetary final drives on the HA770 carry both propel reduction and the oil-cooled disc brakes, so a final-drive overhaul means inspecting brake-pack wear alongside the gearing, not the gearing alone. Rebuild the hydrostatic propel pump and drive motors as a matched set rather than swapping one side, since the piston-pump system balances flow across both ends of the drive. Felling-head overhauls should include the leveling-frame wrist bearing and tilt-cylinder seals, both of which take continuous impact loading through every felling and bunching cycle.
Seasonal & Environment Servicing
This is a mechanically governed diesel with no engine control module, so cold-weather starting depends on functioning starting aids rather than software-managed glow or intake-heater cycles; confirm these work before winter service. Dusty, debris-heavy cutting sites push contamination into the hydrostatic charge circuit and the shared felling-head hydraulic reservoir faster than normal, so shorten fluid-sampling intervals in those conditions. Brush and limb debris packs around the radiator core, reversible fan, and wiring near the felling head and rear engine compartment; clear it every shift to prevent overheating and chafed harnesses.
HA770 common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 185-8154 | Filter Element-Cab Air | Air intake service | Check fitment → |
| 6C-9226 | Filter Element-Cab Air | Air intake service | Check fitment → |
| 207-5035 | Filter Element As-Oil | Hydraulic service | Check fitment → |
| 126-1814 | Filter-Oil | Lubrication service | Check fitment → |
| 108-8839 | Support-Filter | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
HA770 attachments & work tools
Felling head (primary work tool)
A wheel feller buncher in this class carries one felling head as its sole work tool, either a shear head or a continuously spinning disc-saw head; bar-saw heads appear on some lighter machines in the class. Cutting capacity across the wheel feller buncher class commonly spans roughly 46-74 cm (18-29 in) stem diameter, with heavier high-flow heads reaching the top of that range. The exact felling head model factory-paired with this machine is not documented in available records - verify head pairing and cutting capacity with your dealer.
Accumulator / grapple arms
Hydraulically actuated accumulator arms close around the stem to gather and hold felled trees before they are laid into a bunch, reducing impact damage compared with dropping each stem. This is a standard feature on shear and disc-saw felling heads used in this machine class.
Head mounting / coupler system
Felling heads on wheel feller bunchers mount to a leveling frame at the boom tip rather than an excavator-style quick coupler. The frame carries a continuously rotating wrist plus self-leveling tilt cylinders that keep the head oriented through the boom's swing and lift arc.
Hydraulic arrangement / kit notes
The felling head draws from a dedicated high-flow circuit that runs the saw motor or shear cylinder, kept separate from the lower-flow circuit serving the accumulator arms and head tilt. Flow needs vary by configuration/series, but class-level heads typically call for roughly 115-190 L/min (30-50 gpm); swapping between a shear head and a disc-saw head can require a matching hydraulic kit change.
Guarding / factory protection options
Guarding over the tilt-arm cylinders and abrasion-resistant covers on exposed hoses and cylinders protect the head linkage from limb strikes during felling. Forestry cab guarding, such as top and front screens over FOPS/OPS-rated glazing, is a common factory or dealer-installed option for this machine type.
Undercarriage & traction options
Heavy-lug forestry-tread tires or tire chains are the typical traction options for soft or uneven ground in this class, and articulated-frame steering allows tight-radius repositioning of the felling head between rows. Degree of articulation and tire sizing varies by series/configuration.
All HA770 assemblies by section
Every catalogued assembly group for the Caterpillar HA770. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
248-3150 Air Cleaner Gp
| 06***70 | Cap | 1 |
| 13***28 | Cover As | 1 |
| 13***29 | Valve-Dust; (Air Cleaner) | 1 |
240-7901 Air Cleaner Gp
| 10***81 | Hose | 1 |
| 11***60 | Strap | 1 |
| 11***02 | Block | 1 |
8n-2694 Indicator Gp-Air Filter Change
| 8N***94 | Indicator-Air Filter Change; (Air Cleaner) | 1 |
240-7904 Muffler Gp
| 21***25 | Muffler | 1 |
| 21***28 | Coupling-Exhaust | 1 |
| 24***04 | Muffler Group | 1 |
Basic Engine
240-7907 Drive Gp-Fan
| 19***32 | Guard As-Fan | 2 |
| 24***07 | Drive Group-Fan | 1 |
| 24***96 | Belt-Serpentine | 1 |
241-2870 Drive Gp-Fan
| 24***21 | Hub | 1 |
| 24***22 | Spacer | 1 |
| 24***45 | Bracket As | 1 |
240-7940 Flywheel Gp
| 16***85 | Gear-Flywheel; (138-Teeth) | 1 |
| 24***40 | Flywheel Group | 1 |
| 24***41 | Flywheel As | 1 |
240-7900 Mounting Gp-Engine & Xmsn
| 24***00 | Mounting Group-Engine & Xmsn | 1 |
| 24***25 | Support As | 1 |
| 24***30 | Support As | 1 |
Cooling System
241-2910 Fan Ar-Reversible
| 10***04 | Kit-Receptacle; (4-Pin)(Start Switch) | 1 |
| 14***36 | Adapter; (Straight) (-6 Orb X -6 Orfs) | 3 |
| 14***67 | Elbow Group; (Each Includes) | 3 |
244-1935 Fan Ar-Reversible
| 14***36 | Adapter; (Straight) (-6 Orb X -6 Orfs) | 4 |
| 14***67 | Elbow Group; (Each Includes) | 3 |
| 14***78 | Elbow, 90°,-6 Orb /-6 Orfs; (90°) (-6 Orbx-6orfs) | 2 |
243-6611 Fan Gp-Reversible
| 00***60 | Bolt-12 Point Head; (1/4-20x0.875-In) | 4 |
| 0T***44 | Bolt (1.25" Long) | 1 |
| 1T***65 | Bolt 2.54 cm (1" Long) | 8 |
240-7950 Fan Gp-Suction
| 09***49 | Bolt; (M8x1.25x40-mm) | 4 |
| 19***77 | Spider As-Fan; (6-Blade) | 1 |
| 24***19 | Pulley-Fan | 1 |
240-7886 Radiator & Mounting Gp
| 13***44 | Connector | 1 |
| 14***67 | Clamp; (Hose) | 7 |
| 24***71 | Adapter | 1 |
242-3610 Radiator Gp
| 03***65 | Cap As-Radiator; (Sea Water Heat Exchanger) | 1 |
| 20***32 | Shroud As | 1 |
| 20***18 | Bracket | 1 |
Electrical And Starting System
3e-6328 Alarm Gp -Action
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 2 |
| 3E***65 | Wedge; (Receptacle Lock) (2 Pin) | 1 |
240-7911 Battery Gp
| 03***55 | Locknut; (5/16-18-Thd)(Marked X) | 2 |
| 11***22 | Battery Group; (12-Volt, Maintenance Free, Wet) | 2 |
| 11***91 | Bracket Assem. | 3 |
9w-0742 Block Gp-Junction -Battery
| 6V***22 | Tube-Heat Shrink; (25.4-mm Dia)(10-M) | 0 |
| 7F***60 | Washer | 6 |
| 8C***58 | Block Group-Junction; (Battery) | 1 |
240-7908 Electrical Ar
| 24***08 | Electrical Ar | 1 |
| 24***10 | Wiring Group-Engine | 1 |
| 24***11 | Battery Group | 1 |
240-7913 Electronics Gp-Monitor -Caterpillar Monitoring System
| 24***13 | Electronics Group-Monitor; -Caterpillar Monitoring System | 1 |
| 24***24 | Software Group-Monitor; (Caterpillar Monitoring System) | 1 |
| 24***25 | Service Group-Monitor; (Caterpillar Monitoring System) | 1 |
162-7755 Lamp Gp-Dome
| 15***26 | Switch; (Dome Light) | 1 |
| 15***27 | Lamp; (24-Volt)(Dome Light) | 2 |
| 15***28 | Lens; (Dome Light) | 1 |
234-4325 Lamp Gp-Flood
| 16***56 | Bracket; (Lamp Retaining) | 1 |
| 20***14 | Lens As; (Floodlight) | 1 |
| 23***25 | Lamp Group-Flood; -Suspended Mount | 1 |
194-2732 Lighting Gp-Flood -Cab
| 10***23 | Switch As-Rocker; (Boom Lamp) | 1 |
| 11***18 | Clip | 2 |
| 12***48 | Actuator-Rocker | 1 |
194-2715 Panel & Mtg Gp-Circuit Breaker
| 11***91 | Bracket Assem. | 1 |
| 19***15 | Panel & Mtg Group-Circuit Breaker | 1 |
| 20***02 | Panel Group-Circuit Breaker | 1 |
202-2702 Panel Gp-Circuit Breaker
| 09***66 | Washer; (Hard) (4.5x9x1mm Thk) | 4 |
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 10***05 | Kit-Receptacle; (6-Pin)(Display Monitor Harness) | 1 |
198-0917 Receptacle Gp-Auxiliary Start
| 19***17 | Receptacle Group-Auxiliary Start | 1 |
| 1S***51 | Terminal-Cable; (00-Ga, 1/2-In Screw) | 2 |
| 20***34 | Plate As | 1 |
221-3406 Sensor Gp-Pressure
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 15***76 | Wedge-Plug Lock; (3-Pin) | 1 |
| 18***40 | Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga) | 3 |
4p-5820 Sensor Gp-Speed
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 2 |
| 17***49 | Strap; (Marker) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 2 |
130-9811 Sensor Gp-Temperature
| 13***11 | Sensor Group-Temperature; (Transmission Lubrication Oil) | 1 |
| 13***45 | Pad; (Connector) | 1 |
7n-0718 Switch Gp-Disconnect -Battery
| 2H***22 | Lockwasher | 2 |
| 6F***45 | Nut-Full; (3/8-24-Thd) | 2 |
| 7N***18 | Switch As-Disconnect; -Battery-Ground Level | 1 |
172-8660 Switch Gp-Liquid Level -Hydraulic Tank
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 17***60 | Switch Group-Liquid Level; -Rear Engine Oil-Ster, Hydraulic Fan Oil-Engine On-Steering Oil, Engine Off-Auxiliary Coolant-Front Engine Oil-Brake Oil, Hoist-Engine Coolant-Tc Oil-Low, Cold | 1 |
| 9X***01 | Pin-Connector; (16-Ga To 18-Ga)(Throttle Position Sensor) | 2 |
254-3783 Switch Gp-Magnetic -Main Relay
| 15***70 | Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***36 | Socket-Connector; (16-Ga To 18-Ga) | 2 |
| 25***83 | Switch Group-Magnetic; -Main Relay-Main Power Relay | 1 |
167-0138 Switch Gp-Magnetic -Main Relay
| 15***70 | Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 16***38 | Switch Group-Magnetic; -Main Relay-Main Power Relay | 1 |
| 18***36 | Socket-Connector; (16-Ga To 18-Ga) | 2 |
241-8368 Switch Gp-Magnetic -Main Relay
| 15***70 | Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***36 | Socket-Connector; (16-Ga To 18-Ga) | 2 |
| 24***68 | Switch Group-Magnetic; -Main Power Relay-Main Relay | 1 |
165-5970 Switch Gp-Toggle -Reversible Fan
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 16***70 | Switch Group-Toggle; -Engine Shutoff-Starting Aid-Diagnostic Mode Select | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
194-2708 Wiring Gp-Cab
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 4 |
| 10***06 | Receptacle Kit; (Includes Wedge And Receptacle Assem.) | 2 |
| 13***68 | Plug | 4 |
194-2712 Wiring Gp-Console
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 2 |
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 10***04 | Kit-Receptacle; (4-Pin)(Start Switch) | 1 |
240-7910 Wiring Gp-Engine
| 01***80 | Lockwasher | 2 |
| 03***08 | Terminal-Ring | 1 |
| 03***09 | Terminal-Ring; (For 1/4-In Bolt) | 1 |
Engine Arrangement
240-7898 Installation Ar-Engine
| 24***98 | Installation Ar-Engine | 1 |
| 24***99 | Valve Group-Fluid Sampling; -Coolant | 1 |
| 24***00 | Mounting Group-Engine & Xmsn | 1 |
Frame And Body
224-2333 Door Gp-Access -Cab Roof
| 13***02 | Washer-Nylon; (0.53x1.53x0.125-In Thk) | 2 |
| 16***49 | Bolt; (M12x1.75x60-mm) | 4 |
| 21***29 | Block | 2 |
241-2900 Frame & Tank Gp-Rear -Fuel, Hydraulic
| 09***45 | Gauge Group-Sight; -Hydraulic Oil Level | 1 |
| 09***47 | Bolt; (M10x1.5x36-mm) | 2 |
| 09***14 | Seal-O-Ring (Id=9.80mm) | 4 |
242-9992 Frame & Tank Gp-Rear -Fuel, Hydraulic
| 19***60 | Tank Group-Hydraulic | 1 |
| 19***61 | Tank Group-Fuel | 1 |
| 19***67 | Plate As | 1 |
194-2693 Frame As-Front
| 11***58 | Plate | 1 |
| 11***73 | Stud-Weld; (M12x1.75x21.1-mm) | 8 |
| 19***93 | Frame As-Front | 1 |
194-2696 Guard Gp-Bottom -Rear Frame
| 11***54 | Seal; (160-cm) | 0 |
| 19***96 | Guard Group-Bottom; -Rear Frame | 1 |
| 20***74 | Guard As; (Lh) | 1 |
194-2697 Guard Gp-Front -Front Frame
| 10***53 | Bumper-Conical | 1 |
| 19***97 | Guard Group-Front; -Front Frame | 1 |
| 19***93 | Plate | 2 |
148-8959 Hitch Gp-Articulating
| 09***07 | Nut; (M12x1.75-Thd) | 1 |
| 11***72 | Cap | 1 |
| 11***73 | Cap | 1 |
241-2882 Hood & Guard Gp
| 09***91 | Pin - Spring | 2 |
| 11***47 | Spring | 2 |
| 11***04 | Stud | 2 |
194-2698 Link Gp-Steering Frame Lock
| 16***20 | Pin | 1 |
| 19***98 | Link Group-Steering Frame Lock | 1 |
| 19***24 | Pin As | 1 |
214-0782 Stop Gp-Steering
| 21***82 | Stop Group-Steering | 1 |
| 21***93 | Block | 2 |
| 21***94 | Block | 2 |
Fuel System
240-7909 Control Gp-Governor
| 12***78 | Locknut; (M6x1-Thd) | 1 |
| 24***09 | Control Group-Governor | 1 |
| 24***38 | Cable As | 1 |
240-7883 Lines Gp-Fuel
| 14***19 | Connector As | 2 |
| 14***53 | Elbow, 45,-6 Orb To-6 Orfs-Drum Clutch Port | 1 |
| 14***78 | Elbow, 90°,-6 Orb /-6 Orfs; (90°) (-6 Orbx-6orfs) | 1 |
196-3861 Tank Gp-Fuel
| 09***30 | Seal-O-Ring (Id=179.30mm) | 1 |
| 15***39 | Plate | 1 |
| 19***61 | Tank Group-Fuel | 1 |
Hydraulic System
179-9387 Accumulator Gp-Pilot Oil -Uncharged
| 17***87 | Accumulator Group-Pilot Oil; -Uncharged-Dead Engine Lower, Arch, Boom | 1 |
| 20***58 | Film-Warning; (Accumulator)(High Pressure Cylinder) | 2 |
170-8531 Accumulator Gp-Pilot Oil -Charged-Dead Engine, Lift Arm Lower
| 17***31 | Accumulator Group-Pilot Oil; -Charged-Dead Engine Lower, Arch, Boom | 1 |
| 20***58 | Film-Warning; (Accumulator)(High Pressure Cylinder) | 2 |
149-7393 Cylinder & Mtg Gp-Steering
| 00***12 | Washer; (0.13-In Thk) | 2 |
| 14***93 | Cylinder & Mtg Group-Steering | 1 |
| 15***03 | Cylinder & Seal Group-Steering | 2 |
152-3503 Cylinder & Seal Gp-Steering
| 13***12 | Cylinder Group-Steering | 1 |
| 15***03 | Cylinder & Seal Group-Steering | 1 |
| 7K***03 | Seal-Lip Facing Away From Bearing | 4 |
215-6715 Cylinder Gp-Lift
| 15***11 | Lockwasher | 12 |
| 16***01 | Seal As-Buffer | 1 |
| 16***12 | Seal-U-Cup | 1 |
314-9340 Cylinder Gp-Steering
| 13***13 | Cylinder Assem. | 1 |
| 13***14 | Rod Assem. | 1 |
| 17***79 | Bolt-Hex Head; (M24x3.0x80mm) | 1 |
139-3312 Cylinder Gp-Steering
| 13***12 | Cylinder Group-Steering | 1 |
| 13***13 | Cylinder Assem. | 1 |
| 13***14 | Rod Assem. | 1 |
224-9878 Cylinder Gp-Tilt
| 16***01 | Seal As-Buffer | 1 |
| 16***12 | Seal-U-Cup | 1 |
| 19***62 | Seal | 1 |
194-2687 Filler Gp-Hydraulic Oil
| 10***90 | Adapter As | 1 |
| 15***36 | Reducer As | 1 |
| 15***59 | Tee Group | 1 |
194-2681 Filter & Mtg Gp-Oil -Hydraulic
| 15***28 | Elbow As | 2 |
| 19***81 | Filter & Mtg Group-Oil; -Hydraulic | 1 |
| 19***79 | Filter Group-Oil; -Power Train Charge Pump | 1 |
214-6594 Filter Gp-Oil -Case Drain
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 2 |
| 21***94 | Filter Group-Oil; -Hydraulic, Power Train Case Drain | 1 |
196-3079 Filter Gp-Oil -Power Train Charge Pump
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 10***36 | Seal-O-Ring; (49.28mm Id) | 1 |
| 12***14 | Filter-Oil; (Ultra High Efficiency) | 1 |
196-4558 Filter Gp-Oil -Main Hydraulic
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 2 |
| 19***58 | Filter Group-Oil; -Main Hydraulic | 1 |
240-7895 Hydraulic Ar
| 14***93 | Cylinder & Mtg Group-Steering | 1 |
| 19***73 | Pump & Mtg Group-Hydraulic | 1 |
| 19***74 | Lines Group-Tilt Cylinder | 1 |
167-7080 Lever Gp-Control -Hydraulic Lockout
| 09***62 | Washer; (Hard) (3.4x7x0.8mm Thk) | 2 |
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 12***27 | Screw-Pan Head; (M3x0.5x16-mm) | 2 |
197-9885 Lever Gp-Control -Hydraulic Lockout
| 16***80 | Lever Group-Control; -Hydraulic Lockout | 1 |
| 17***08 | Cover | 1 |
| 19***85 | Lever Group-Control; -Hydraulic Lockout | 1 |
194-2677 Lines Gp-Front
| 14***27 | Connector Group | 4 |
| 14***27 | Tee As; (Orfs) | 1 |
| 15***45 | Union As | 4 |
242-0668 Lines Gp-Grease
| 11***91 | Bracket Assem. | 2 |
| 14***20 | Connector As | 14 |
| 14***51 | Elbow Group | 1 |
241-8463 Lines Gp-Hydraulic
| 14***67 | Clamp; (Hose) | 4 |
| 14***35 | Connect Group; (Each Includes) | 1 |
| 14***36 | Adapter; (Straight) (-6 Orb X -6 Orfs) | 1 |
194-2675 Lines Gp-Lift Cylinder
| 14***17 | Adapter, -12 Orb / -16 Orfs | 2 |
| 14***59 | Elbow Group | 4 |
| 14***50 | Tee As | 2 |
194-2676 Lines Gp-Pilot
| 06***51 | Clamp | 4 |
| 13***33 | Grommet | 1 |
| 14***36 | Adapter; (Straight) (-6 Orb X -6 Orfs) | 2 |
241-8465 Lines Gp-Return
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 10***65 | Tee As-Swivel | 1 |
| 10***33 | Clip; (Slot) | 2 |
242-1509 Lines Gp-Steering
| 13***11 | Elbow; (Lh) | 1 |
| 13***53 | Elbow; (Rh) | 1 |
| 14***47 | Elbow; (-12 Orb/Orfs) | 2 |
194-2674 Lines Gp-Tilt Cylinder
| 12***67 | Clamp-Hose | 2 |
| 14***17 | Adapter, -12 Orb / -16 Orfs | 2 |
| 14***59 | Elbow Group | 4 |
194-2673 Pump & Mtg Gp-Hydraulic
| 14***16 | Connector Group | 2 |
| 14***17 | Adapter, -12 Orb / -16 Orfs | 2 |
| 14***26 | Adapter; (Straight) (-4 Orb X -4 Orfs) | 1 |
262-4420 Pump Gp-Piston -Saw
| 09***70 | Bolt-Socket Hd; (M12 X 1.75 X 45) | 4 |
| 11***49 | Fitting As; (Quick Disconnect) | 1 |
| 22***87 | Swashplate As | 1 |
262-4419 Pump Gp-Piston -Implement, Pilot, Steering
| 09***70 | Bolt-Socket Hd; (M12 X 1.75 X 45) | 4 |
| 11***49 | Fitting As; (Quick Disconnect) | 2 |
| 22***88 | Swashplate As | 1 |
261-4670 Screen Gp-Hydraulic -Implement Pump Inlet
| 09***24 | Seal-O-Ring | 1 |
| 15***24 | Hex Head Plug; (-4sae) (D6r Iii) | 1 |
| 25***72 | Strainer; (Hydraulic Oil) | 1 |
266-7156 Screen Gp-Hydraulic
| 15***24 | Hex Head Plug; (-4sae) (D6r Iii) | 2 |
| 25***72 | Strainer; (Hydraulic Oil) | 1 |
| 26***70 | Screen Group-Hydraulic; -Implement Pump Inlet | 1 |
196-3860 Tank Gp-Hydraulic
| 09***30 | Seal-O-Ring (Id=179.30mm) | 2 |
| 15***39 | Plate | 2 |
| 19***60 | Tank Group-Hydraulic | 1 |
194-2734 Valve & Lines Ar -Shear
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 11***60 | Valve-Check; (Transmission Oil) | 2 |
| 14***17 | Adapter, -12 Orb / -16 Orfs | 2 |
194-2686 Valve & Mtg Gp-Combination -Pilot, Brake, Steering
| 14***15 | Connector As | 2 |
| 14***27 | Connector Group | 1 |
| 14***36 | Adapter; (Straight) (-6 Orb X -6 Orfs) | 10 |
194-2672 Valve & Mtg Gp-Main Control
| 14***36 | Adapter; (Straight) (-6 Orb X -6 Orfs) | 2 |
| 16***58 | Reducer As | 1 |
| 19***72 | Valve & Mtg Group-Main Control | 1 |
196-6864 Valve Gp-Bank 4
| 17***83 | Kit-Bracket; (Main Control Valve) | 1 |
| 17***85 | Kit-Seal; (Main Control Valve) | 1 |
| 19***64 | Valve Group-Bank 4; -Main Hydraulic | 1 |
200-0870 Valve Gp-Bank 5
| 17***83 | Kit-Bracket; (Main Control Valve) | 1 |
| 17***85 | Kit-Seal; (Main Control Valve) | 1 |
| 20***70 | Valve Group-Bank 5 | 1 |
197-7156 Valve Gp-Combination -Pilot, Brake, Steering
| 12***33 | Coil As; (24-Volt) | 1 |
| 12***35 | Kit-Seal | 1 |
| 12***72 | Cartridge As | 1 |
218-9834 Valve Gp-Control -Inlet
| 17***04 | Adapter As-Valve | 1 |
| 21***34 | Valve Group-Control; -Inlet | 1 |
| 22***11 | Kit-Seal | 1 |
224-9839 Valve Gp-Control -Grapple Arm
| 09***45 | Bolt-Socket Head; (M6x1.00x55mm) | 2 |
| 16***40 | Valve Group-Relief; (Line) | 2 |
| 17***85 | Kit-Seal; (Main Control Valve) | 1 |
219-6133 Valve Gp-Control -End Cover
| 21***33 | Valve Group-Control; -End Cover | 1 |
| 3D***24 | O-Ring - For Oil Drain & Level Plug (Items 3 & 7) | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
218-9841 Valve Gp-Control -Shear
| 09***45 | Bolt-Socket Head; (M6x1.00x55mm) | 2 |
| 17***85 | Kit-Seal; (Main Control Valve) | 1 |
| 17***47 | Kit-Spring; (Control Valve) | 1 |
218-9840 Valve Gp-Control -Tilt
| 09***45 | Bolt-Socket Head; (M6x1.00x55mm) | 2 |
| 16***40 | Valve Group-Relief; (Line) | 2 |
| 17***85 | Kit-Seal; (Main Control Valve) | 1 |
218-9842 Valve Gp-Control -End Cover
| 17***85 | Kit-Seal; (Main Control Valve) | 1 |
| 18***69 | Plug | 1 |
| 21***42 | Valve Group-Control; -End Cover | 1 |
224-9840 Valve Gp-Control -Accumulator Arm
| 09***41 | Bolt-Socket Head; (M4x0.7x10-mm) | 2 |
| 09***45 | Bolt-Socket Head; (M6x1.00x55mm) | 2 |
| 12***45 | Seal-O-Ring; (25.3mm Id) | 1 |
218-9836 Valve Gp-Control -Grapple Arm
| 09***45 | Bolt-Socket Head; (M6x1.00x55mm) | 2 |
| 16***40 | Valve Group-Relief; (Line) | 2 |
| 17***85 | Kit-Seal; (Main Control Valve) | 1 |
218-9839 Valve Gp-Control -Lift
| 09***45 | Bolt-Socket Head; (M6x1.00x55mm) | 2 |
| 16***40 | Valve Group-Relief; (Line) | 2 |
| 17***85 | Kit-Seal; (Main Control Valve) | 1 |
218-9838 Valve Gp-Control -Accumulator Arm
| 09***41 | Bolt-Socket Head; (M4x0.7x10-mm) | 2 |
| 09***45 | Bolt-Socket Head; (M6x1.00x55mm) | 2 |
| 12***45 | Seal-O-Ring; (25.3mm Id) | 1 |
219-6467 Valve Gp-Control -Steering
| 13***13 | Bolt-Socket Head; (M6x1x30-mm) | 6 |
| 15***82 | Bolt-Socket Head; (M6x1x40-mm) | 1 |
| 17***70 | Orifice; (0.6mm Id) | 2 |
196-6110 Valve Gp-Pilot -Rh Joystick
| 13***66 | Nut; (M14x2-Thd) | 1 |
| 19***10 | Valve Group-Pilot; -Rh Joystick | 1 |
| 22***74 | Control Group-Handle | 1 |
196-6109 Valve Gp-Pilot -Lh Joystick
| 13***66 | Nut; (M14x2-Thd) | 1 |
| 19***09 | Valve Group-Pilot; -Lh Joystick | 1 |
| 22***73 | Control Group-Handle | 1 |
152-8346 Valve Gp-Solenoid
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 10***36 | Kit-Seal; (Solenoid Valve) | 1 |
| 11***43 | Locknut; (5/16-18-Thd) | 2 |
171-3685 Valve Gp-Solenoid
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 2 |
| 11***43 | Locknut; (5/16-18-Thd) | 2 |
| 16***71 | Kit-Seal; (Solenoid Valve) | 1 |
198-4390 Valve Gp-Solenoid & Manifold
| 17***85 | Valve Group-Solenoid | 1 |
| 19***90 | Valve Group-Solenoid & Manifold | 1 |
| 22***64 | Cartridge As-Valve | 2 |
Implements
201-9712 Link Gp-Tilt
| 20***12 | Link Group-Tilt | 1 |
| 20***22 | Link & Bearing As; (Tilt) | 2 |
| 3K***75 | Bearing-Sleeve | 2 |
201-9711 Link Gp-Tilt
| 20***11 | Link Group-Tilt | 1 |
| 20***21 | Link & Bearing As | 1 |
| 20***21 | Link As | 1 |
194-2695 Linkage Gp-Felling Head
| 13***65 | Washer; (13.8x45x3-mm Thk) | 14 |
| 19***95 | Linkage Group-Felling Head | 1 |
| 20***13 | Lever As-Tilt | 1 |
Lubrication System
240-7899 Valve Gp-Fluid Sampling -Coolant
| 15***23 | Valve-Sampling; (Engine Coolant) | 1 |
| 15***70 | Cap-Dust; (Engine Coolant) | 1 |
| 24***99 | Valve Group-Fluid Sampling; -Coolant | 1 |
Machine Arrangement
240-7882 Chassis Ar
| 09***45 | Cable; (Lanyard) | 1 |
| 14***59 | Hitch Group-Articulating | 1 |
| 18***48 | Key | 1 |
240-7881 Common Ar
| 19***04 | Operator Ar-Enclosed Rops | 1 |
| 24***81 | Common Ar | 1 |
| 24***82 | Chassis Ar | 1 |
Operator Station
178-5524 Adjustment Gp-Console
| 09***36 | Screw; (Machine) (M5x0.8x10mm) | 1 |
| 09***15 | Ring-Retaining | 1 |
| 11***26 | Screw; (Pan Head) (10-16x0.63 In) | 1 |
197-4107 Air Conditioner & Mounting Gp
| 18***54 | Filter Element-Cab Air | 1 |
| 19***07 | Air Conditioner & Mounting Group | 1 |
| 19***60 | Air Conditioner Group | 1 |
240-7888 Air Conditioner Ar
| 24***88 | Air Conditioner Ar | 1 |
| 24***89 | Lines Group-Air Conditioner | 1 |
199-3160 Air Conditioner Gp
| 17***62 | Duct | 1 |
| 17***63 | Duct As | 1 |
| 18***09 | Duct | 1 |
194-2707 Cab Gp-Enclosed Rops
| 19***07 | Cab Group-Enclosed Rops | 1 |
| 19***08 | Wiring Group-Cab | 1 |
| 19***09 | Panel Group-Instrument | 1 |
199-3159 Case Gp-Air Conditioner
| 18***19 | Screw-Hex Flange; (M5x2.24x14-mm) | 6 |
| 18***56 | Switch As-Pressure; (Air Conditioner, Low Side) | 1 |
| 18***57 | Switch As-Pressure; (High Discharge Cut Off) | 1 |
177-6729 Case Gp-Heater & Evaporator
| 03***38 | Clamp | 1 |
| 13***14 | Grommet | 1 |
| 17***87 | Coil As-Heater | 1 |
199-3157 Case Gp-Heater & Evaporator
| 03***38 | Clamp | 1 |
| 13***14 | Grommet | 1 |
| 17***87 | Coil As-Heater | 1 |
240-7905 Compressor Gp-Refrigerant
| 17***57 | Rod | 1 |
| 24***05 | Compressor Group-Refrigerant | 1 |
| 24***90 | Plate As | 1 |
3e-1906 Compressor Gp-Refrigerant
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***39 | Pin-Connector; (14-Ga To 18-Ga)(For 14 Gauge Wire) | 2 |
| 31***18 | Valve As-Pressure Relief; (Refrigerant Compressor) | 1 |
204-6974 Console Gp-Operator -Rh
| 11***26 | Screw; (Pan Head) (10-16x0.63 In) | 5 |
| 12***35 | Screw; (Truss Head) (M6x1x13mm) | 6 |
| 15***99 | Nut | 10 |
200-8042 Console Gp-Operator
| 16***59 | Console Group-Operator; -Lh | 1 |
| 17***13 | Guard | 2 |
| 17***14 | Support | 2 |
161-3759 Console Gp-Operator -Lh
| 11***26 | Screw; (Pan Head) (10-16x0.63 In) | 8 |
| 12***35 | Screw; (Truss Head) (M6x1x13mm) | 5 |
| 15***99 | Nut | 8 |
196-4116 Control Gp-Hydraulic Pedal -Brake
| 11***26 | Kit-Seal | 1 |
| 19***16 | Control Group-Hydraulic Pedal; -Brake | 1 |
| 21***34 | Valve As | 1 |
194-2714 Control Gp-Pilot Operated Hyd
| 14***77 | Elbow As. | 10 |
| 15***44 | Connector Group | 5 |
| 16***69 | Adapter; (Str Thd (-6) Orfs/0) | 5 |
254-9336 Door Gp-Cab
| 09***55 | Clip | 2 |
| 10***61 | Guard | 1 |
| 10***44 | Latch As-Rotary | 1 |
197-4720 Door Gp-Cab
| 03***72 | Pin-Clevis | 2 |
| 09***55 | Clip | 2 |
| 09***87 | Channel-Trim | 0 |
199-5134 Duct Gp-Air
| 10***67 | Washer-Hard; (7.2x25x2-mm Thk) | 3 |
| 11***27 | Screw-Machine; (M6x1x30-mm) | 3 |
| 19***21 | Duct | 1 |
197-2913 Duct Gp-Cab Air
| 10***91 | Screw; (Flat Head) (No.6-20x0.5in) | 4 |
| 11***17 | Louver As | 1 |
| 11***94 | Hose; (66-cm) | 0 |
213-0235 Handle Gp-Door -Cab
| 09***66 | Washer; (Hard) (4.5x9x1mm Thk) | 2 |
| 21***35 | Handle Group-Door; -Cab | 1 |
| 6V***92 | Screw-Machine; (M4x0.7x25-mm) | 1 |
202-9627 Housing Gp-Air Conditioner -Outlet Air
| 17***12 | Cover | 1 |
| 17***13 | Housing | 1 |
| 17***27 | Actuator | 1 |
199-3156 Housing Gp-Air Conditioner -Inlet Air
| 17***90 | Plate | 1 |
| 17***99 | Gasket | 1 |
| 17***05 | Case; (Bottom) | 1 |
220-8420 Installation Gp-Radio
| 10***55 | Cover-Speaker | 2 |
| 11***19 | Bolt-Socket Head; (M4x0.7x25-mm) | 8 |
| 11***54 | Cover | 1 |
240-7889 Lines Gp-Air Conditioner
| 06***51 | Clamp | 2 |
| 12***59 | Clamp | 2 |
| 17***02 | Receiver Dryer As; (Refrigerant) | 1 |
240-7887 Lines Gp-Cab Heater
| 16***73 | Valve Group-Shutoff | 1 |
| 24***87 | Lines Group-Cab Heater | 1 |
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 1 |
200-6424 Module Gp-Quad Gauge
| 10***05 | Kit-Receptacle; (6-Pin)(Display Monitor Harness) | 1 |
| 20***24 | Module Group-Quad Gauge | 1 |
| 3E***83 | Wedge-Receptacle Lock; (6-Pin) | 1 |
194-2706 Mounting Gp-Cab
| 19***06 | Mounting Group-Cab | 1 |
| 21***53 | Sleeve | 4 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 4 |
194-2704 Operator Ar-Enclosed Rops
| 16***57 | Support Group-Seat; Support Gp - Seat | 1 |
| 19***04 | Operator Ar-Enclosed Rops | 1 |
| 19***05 | Platform Group-Operator | 1 |
194-2709 Panel Gp-Instrument
| 10***66 | Bezel | 2 |
| 11***27 | Screw-Machine; (M6x1x30-mm) | 5 |
| 11***11 | Socket-Auxiliary Power; (12-Volt)(Power Port) | 1 |
194-2705 Platform Gp-Operator
| 19***05 | Platform Group-Operator | 1 |
| 19***53 | Tread | 1 |
| 19***96 | Plate As | 1 |
204-0363 Radio Gp -Am/Fm/Wb Cd Player
| 13***90 | Bushing; (Radio Mount) | 1 |
| 14***81 | Knob-Select; (Radio) | 1 |
| 16***26 | Radio Group; (Am/Fm Cd Player) | 1 |
284-8953 Radio Gp -Am/Fm/Wb/Cd Player
| 14***81 | Knob-Select; (Radio) | 1 |
| 19***54 | Sleeve | 1 |
| 28***53 | Radio Group; -Am/Fm/Wb/Cd Player | 1 |
201-6973 Seat Gp
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 2 |
| 20***85 | Suspension Group-Seat; -Air | 1 |
194-2684 Seat Gp-Suspension
| 19***84 | Seat Group-Suspension | 1 |
| 1A***50 | Bolt (7/16-20x1.75in); (7/16-20x1.75-In) | 2 |
| 20***73 | Seat Group | 1 |
210-7727 Seat Gp-Suspension
| 1A***50 | Bolt (7/16-20x1.75in); (7/16-20x1.75-In) | 2 |
| 21***27 | Seat Group-Suspension | 1 |
| 21***28 | Seat Group-Suspension | 1 |
210-7728 Seat Gp-Suspension
| 21***52 | Seat Group | 1 |
| 21***28 | Seat Group-Suspension | 1 |
| 21***02 | Suspension Group-Seat | 1 |
161-3757 Support Gp-Seat
| 16***57 | Support Group-Seat; Support Gp - Seat | 1 |
| 16***43 | Support As; (Seat) | 1 |
| 7X***29 | Washer; (11x25x3-mm Thk) | 4 |
210-8502 Suspension Gp-Seat
| 17***55 | Kit-Seat Adjuster; (Upper) | 1 |
| 17***57 | Kit-Cable Adjuster; (Lower) | 1 |
| 17***58 | Kit-Handle | 2 |
201-5685 Suspension Gp-Seat -Air
| 17***55 | Kit-Seat Adjuster; (Upper) | 1 |
| 17***57 | Kit-Cable Adjuster; (Lower) | 1 |
| 17***58 | Kit-Handle | 2 |
198-3890 Trim Gp-Cab
| 09***35 | Screw; (Machine) (M5x0.8x8mm) | 2 |
| 10***39 | Support-Filter | 1 |
| 12***08 | Bracket As | 1 |
196-2392 Window Gp-Cab -Lh
| 13***30 | Hinge-Lh | 2 |
| 15***15 | Gasket | 1 |
| 19***87 | Frame As-Lower | 1 |
212-3310 Window Gp-Cab
| 13***30 | Hinge-Lh | 2 |
| 15***15 | Gasket | 1 |
| 21***25 | Glass; (Fixed, Lower) | 1 |
194-2711 Window Gp-Cab
| 19***11 | Window Group-Cab | 1 |
| 19***92 | Window Group-Cab; -Lh | 1 |
| 19***21 | Window-Rh | 1 |
Power Train
213-8773 Accumulator Gp-Brake -Charged
| 1J***71 | Seal (10.52 Degrees I.D.); Seal-O-Ring -- To Adapter | 1 |
| 21***73 | Accumulator Group-Brake; -Charged | 1 |
| 22***32 | Cap; (Gas Valve) | 1 |
214-0625 Axle Ar
| 19***32 | Axle Ar-Oscillating; -Front | 1 |
| 20***25 | Axle Ar-Fixed; -Rear | 1 |
| 20***49 | Mounting Group-Rim | 1 |
213-4602 Axle Ar
| 13***15 | Axle Ar-Fixed; -Rear | 1 |
| 14***69 | Stud | 80 |
| 20***93 | Axle Ar-Oscillating; -Front | 1 |
139-4115 Axle Ar-Fixed -Rear
| 13***15 | Axle Ar-Fixed; -Rear | 1 |
| 13***21 | Housing Group-Fixed Axle | 1 |
| 13***26 | Brake & Planetary Group | 2 |
204-5725 Axle Ar-Fixed -Rear
| 13***19 | Brake & Planetary Group | 2 |
| 13***83 | Gear Group-Bevel & Pinion | 1 |
| 18***87 | Differential Group; -Locking | 1 |
194-1532 Axle Ar-Oscillating -Front
| 13***83 | Gear Group-Bevel & Pinion | 1 |
| 18***87 | Differential Group; -Locking | 1 |
| 19***32 | Axle Ar-Oscillating; -Front | 1 |
209-9293 Axle Ar-Oscillating -Front
| 13***83 | Gear Group-Bevel & Pinion | 1 |
| 18***87 | Differential Group; -Locking | 1 |
| 20***93 | Axle Ar-Oscillating; -Front | 1 |
139-4119 Brake & Planetary Gp
| 13***52 | Dowel | 4 |
| 13***45 | Pin-Spring | 3 |
| 13***19 | Brake & Planetary Group | 1 |
139-4126 Brake & Planetary Gp
| 13***52 | Dowel | 4 |
| 13***45 | Pin-Spring | 3 |
| 13***26 | Brake & Planetary Group | 1 |
194-2683 Control Gp-Parking Brake
| 06***51 | Clamp | 1 |
| 14***61 | Elbow Group | 1 |
| 19***83 | Control Group-Parking Brake | 1 |
194-2682 Control Gp-Service Brake
| 09***63 | Grommet | 1 |
| 14***36 | Adapter; (Straight) (-6 Orb X -6 Orfs) | 2 |
| 14***67 | Elbow Group; (Each Includes) | 1 |
225-6855 Conversion Gp-Brake Lines
| 14***67 | Elbow Group; (Each Includes) | 2 |
| 14***58 | Union, 90 Deg -6 | 2 |
| 15***27 | Tee Group; (Each Includes) | 2 |
184-3587 Differential Gp -Locking
| 12***60 | Screw-Flat Head; (M6x1x16-mm) | 8 |
| 12***42 | Washer-Thrust | 1 |
| 13***28 | Gear-Bevel; (Differential Lock, 16-Teeth) | 1 |
110-0924 Drive Gp-Flexible Coupling
| 11***24 | Drive Group-Flexible Coupling | 1 |
| 11***71 | Driver | 1 |
| 4B***44 | Rivet | 5 |
199-5713 Drive Gp-Pump
| 15***65 | Elbow; (Spl) | 1 |
| 15***46 | Adapter Group | 1 |
| 16***62 | Connector Assembly | 1 |
196-7442 Drive Gp-Pump
| 16***77 | Plug As | 1 |
| 18***25 | Ring | 1 |
| 19***42 | Drive Group-Pump | 1 |
139-4183 Gear Gp-Bevel & Pinion
| 03***60 | Cup-Roller Bearing | 1 |
| 03***61 | Cone-Roller Bearing | 1 |
| 11***84 | Sleeve As | 1 |
139-4121 Housing Gp-Fixed Axle
| 09***04 | Bolt-Socket Head; (M12x1.75x110-mm) | 4 |
| 12***03 | Seal-Lip Type; (7602mm Id) | 1 |
| 13***21 | Housing Group-Fixed Axle | 1 |
204-5726 Housing Gp-Fixed Axle
| 12***03 | Seal-Lip Type; (7602mm Id) | 1 |
| 13***08 | Shaft-Axle | 2 |
| 14***29 | Retainer-Seal | 1 |
209-9294 Housing Gp-Oscillating Axle
| 09***04 | Bolt-Socket Head; (M12x1.75x110-mm) | 4 |
| 10***31 | Plate | 1 |
| 12***03 | Seal-Lip Type; (7602mm Id) | 1 |
194-1533 Housing Gp-Oscillating Axle
| 09***04 | Bolt-Socket Head; (M12x1.75x110-mm) | 4 |
| 10***31 | Plate | 1 |
| 12***03 | Seal-Lip Type; (7602mm Id) | 1 |
194-2724 Lines Gp-Charge Pressure
| 14***05 | Adapter Group | 1 |
| 14***27 | Connector Group | 1 |
| 14***65 | Elbow | 1 |
194-2685 Lines Gp-Differential Lock
| 14***36 | Adapter; (Straight) (-6 Orb X -6 Orfs) | 1 |
| 14***53 | Elbow, 45,-6 Orb To-6 Orfs-Drum Clutch Port | 1 |
| 14***77 | Elbow As. | 1 |
241-6972 Lines Gp-Hydrostatic
| 12***88 | Flange-Split | 4 |
| 18***47 | Coupler As-Quick Disconnect | 4 |
| 18***08 | Cap-Dust | 4 |
241-9746 Lines Gp-Speed Control -Power Train
| 06***51 | Clamp | 5 |
| 14***36 | Adapter; (Straight) (-6 Orb X -6 Orfs) | 4 |
| 14***67 | Elbow Group; (Each Includes) | 3 |
194-2723 Motor & Mtg Gp-Propel
| 19***23 | Motor & Mtg Group-Propel | 1 |
| 19***08 | Motor Group-Piston; -Propel | 1 |
| 7X***66 | Capscrew; (Hex Hd) (3/4-10x2 Gd 8 Z) (Current Adapters) | 4 |
196-6808 Motor Gp-Piston -Propel
| 10***85 | Bolt-Socket Head; (M12x1.75x60-mm) | 2 |
| 10***87 | Bolt; (Hex Socket) (M6x1.0x20.0mm) | 4 |
| 10***81 | Bolt; (Socket Head) (M12x1.75x35mm) | 2 |
194-9447 Mounting Gp-Axle
| 19***47 | Mounting Group-Axle | 1 |
| 7X***67 | Bolt-Plt; (M24 X 3.0 X 160) | 8 |
| 7X***79 | Bolt; (M24x3x240-mm) | 8 |
204-9249 Mounting Gp-Rim
| 14***69 | Stud | 64 |
| 20***49 | Mounting Group-Rim | 1 |
| 2J***05 | Nut Rim To Adapter And Adapter To Wheel | 64 |
209-9298 Planetary Gp-Final Drive
| 13***52 | Dowel | 4 |
| 13***45 | Pin-Spring | 3 |
| 13***30 | Gear-Sun; (15-Teeth) | 1 |
195-5930 Planetary Gp-Final Drive
| 13***52 | Dowel | 4 |
| 13***45 | Pin-Spring | 3 |
| 13***29 | Carrier-Planetary | 1 |
240-7914 Power Train Ar
| 11***24 | Drive Group-Flexible Coupling | 1 |
| 19***21 | Transmission & Mounting Group | 1 |
| 19***22 | Pump & Mtg Group-Propel | 1 |
194-2722 Pump & Mtg Gp-Propel
| 14***92 | Elbow; (-12 Orfs/-12 Orfs Swivel) | 1 |
| 15***33 | Tee As | 1 |
| 19***22 | Pump & Mtg Group-Propel | 1 |
243-4904 Pump Gp-Piston -Propel
| 03***05 | Seal-O-Ring | 2 |
| 09***40 | Ring; (Retaining) | 1 |
| 10***79 | Seal-O-Ring | 2 |
206-2575 Shaft Gp-Drive
| 02***08 | Screw; (3/8-24) | 1 |
| 19***66 | Setscrew | 1 |
| 20***75 | Shaft Group-Drive | 1 |
194-2727 Shaft Gp-Drive
| 19***27 | Shaft Group-Drive | 1 |
| 20***75 | Shaft Group-Drive | 1 |
| 21***46 | Spider & Bearing As | 2 |
229-1639 Tire & Rim Ar
| 22***38 | Tire & Rim Group | 4 |
| 22***39 | Tire & Rim Ar | 1 |
137-9837 Tire & Rim Ar
| 13***16 | Tire & Rim Group | 4 |
| 13***37 | Tire & Rim Ar | 1 |
194-2733 Tire & Rim Ar
| 13***15 | Tire & Rim Ar | 1 |
| 19***33 | Tire & Rim Ar | 1 |
| 21***93 | Block | 2 |
132-0115 Tire & Rim Ar
| 13***15 | Tire & Rim Ar | 1 |
| 13***17 | Tire & Rim Group | 4 |
205-7342 Tire & Rim Ar
| 20***41 | Tire & Rim Group | 4 |
| 20***42 | Tire & Rim Ar | 1 |
214-0740 Tire & Rim Ar
| 20***08 | Tire & Rim Group | 2 |
| 20***41 | Tire & Rim Group | 2 |
| 21***40 | Tire & Rim Ar | 1 |
131-9189 Tire & Rim Ar
| 13***82 | Tire & Rim Group | 4 |
| 13***89 | Tire & Rim Ar | 1 |
131-9182 Tire & Rim Gp
| 13***60 | Tire & Tube Group; (28-26) | 1 |
| 13***82 | Tire & Rim Group | 1 |
| 15***49 | Rim As | 1 |
205-7341 Tire & Rim Gp
| 13***80 | Tire & Tube Group; (30.5-32) | 1 |
| 20***06 | Rim As; (27x32) | 1 |
| 20***41 | Tire & Rim Group | 1 |
229-1638 Tire & Rim Gp
| 13***60 | Tire & Tube Group; (28-26) | 1 |
| 22***37 | Rim As | 1 |
| 22***38 | Tire & Rim Group | 1 |
204-5308 Tire & Rim Gp
| 14***62 | Tire; (35.5-32) | 1 |
| 20***08 | Tire & Rim Group | 1 |
| 23***39 | Rim As; (27x32) | 1 |
137-9816 Tire & Rim Gp
| 13***33 | Tire & Tube Group; (28l-26) | 1 |
| 13***16 | Tire & Rim Group | 1 |
| 15***49 | Rim As | 1 |
132-0117 Tire & Rim Gp
| 13***75 | Rim As | 1 |
| 13***80 | Tire & Tube Group; (30.5-32) | 1 |
| 13***17 | Tire & Rim Group | 1 |
194-2721 Transmission & Mounting Gp
| 12***91 | Elbow | 1 |
| 14***17 | Adapter, -12 Orb / -16 Orfs | 1 |
| 14***95 | Plug As | 1 |
194-4241 Transmission Gp -Gearbox
| 11***19 | Plug-Magnetic; (Engine Oil Pan Drain) | 1 |
| 19***41 | Transmission Group; -Gearbox | 1 |
| 1D***58 | Pin | 2 |
243-4906 Valve Gp-Pump Control -Propel
| 09***01 | Bolt-Socket Head; (M8x1.25x40-mm) | 2 |
| 11***66 | Seal-O-Ring | 1 |
| 17***39 | Bolt-Socket Head; (M8x1.25x30-mm) | 4 |
Service Equipment And Supplies
240-7896 Film Gp
| 24***92 | Film-Stripe; (Rh) | 1 |
| 24***96 | Film Group | 1 |
| 24***42 | Film | 2 |
242-1771 Lines Gp-Pressurized Water
| 00***53 | Elbow-Pipe; (1/2-14 Nptf Thd) | 1 |
| 14***28 | Connector Assem. | 1 |
| 14***70 | Elbow, 90°,-8 Orb Swiv. /-8 Orfs | 1 |
240-7893 Plate & Film Gp
| 10***30 | Film; (Warning) (Accumulator Pressure) (On Bracket Covering Brake Accumulator) | 1 |
| 11***93 | Plate; (Instruction) (On Right Side Behind Cab Door) | 1 |
| 11***42 | Film-Warning; (Battery/Jump Start) | 2 |
Work Tools
222-5029 Head Ar-Felling
| 20***12 | Link Group-Tilt | 1 |
| 22***29 | Head Ar-Felling | 1 |
| 22***30 | Head Ar-Felling | 1 |
199-3716 Tooth Gp-Saw -18-Teeth, Beaver
| 19***16 | Tooth Group-Saw; -18-Teeth, Beaver | 1 |
203-3242 Tooth Gp-Saw -18-Teeth, Super Carbide
| 20***42 | Tooth Group-Saw; -18-Teeth, Super Carbide | 1 |
HA770 serial number reference
The PIN plate is a metal tag riveted to the machine frame, usually on the main frame rail near the cab entry or operator's station on wheel feller bunchers. Read the Product Identification Number left to right: the first three characters are the serial prefix (model/series identifier), followed by the machine sequence number. The prefix alone determines which parts and service manual set applies, not the model name stamped elsewhere on the machine.
| Prefix | Identifies | Notes |
|---|---|---|
| HAB | Wheel Feller Buncher (HA770) - only documented production series | Serial range HAB00001-UP. Only documented production series for this wheel feller buncher. No separate prefix ties to a distinct engine or undercarriage configuration. Engine fitment not confirmed for this range - verify build year and engine with a dealer using the full PIN. |
Frequently asked questions
What engine does the Caterpillar HA770 use?
No published source confirms a specific engine model for the HA770. It runs a liquid-cooled, mechanically governed diesel with a reversible cooling fan, per the machine's own factory documentation, but the exact engine family and arrangement number are not documented for this serial range (HAB00001-UP). Confirm the engine fitted to your specific machine from its engine tag or full PIN with a Caterpillar dealer before ordering engine parts.
What is the operating weight of the HA770?
Operating weight is not published for the HA770 in any accessible dealer or spec listing. This is a wheeled, articulated-frame feller buncher, so there is no ground-pressure figure either. If you need a weight for transport or site planning, get it from the machine's own data plate or your dealer rather than a listing for a similarly named sibling model.
What replaced the Caterpillar HA770?
No direct successor is documented by name for the HA770 itself. Caterpillar's wheel feller buncher line continued under other number ranges - the 533/543/550/554/570/574/580 series, and later the C6.6 ACERT-powered 553C/563C/573C generation - but none of these is confirmed as a one-for-one replacement rather than a broader lineup continuation.
What HA770 owners discuss
What do mechanics say about the HA770's hydrostatic propel behavior?
Little dedicated discussion of the HA770 by name exists, so treat this as general guidance for hydrostatic-drive wheel feller-bunchers of the same era rather than confirmed HA770 reports. On machines of this type, weak or spongy propel response usually traces to a worn charge pump, low case pressure, or contaminated hydraulic oil rather than the drive motors themselves. Cold-oil sluggishness on startup is normal and clears once the system warms; a persistent creep or one-side pull after warm-up points to a leaking motor or valve and should be checked before it worsens.
How does the articulated frame and oscillating front axle hold up over time?
No HA770-specific reports turned up, so this reflects general wear behavior for wheeled feller-bunchers with an oscillating front axle and center-pin articulation. Center-pin bushings and axle pivot pins take heavy side loading every time the head swings a tree, and they are usually the first things to develop play on a tired machine. Loose articulation, a wandering steer, or knocking over rough ground on a used unit usually means those pins and bushings are worn and need measuring, not just greasing.
Are the saw-disc felling heads on machines like this known for cracking?
This is a known wear pattern across carbide saw-disc felling heads in general, not something confirmed as an HA770-specific complaint. Discs on this style of head can develop fatigue cracks near the tooth pockets from repeated impact, especially cutting frozen wood or hitting rock and debris near the ground. Chipped or missing carbide teeth are a routine wear item; a cracked disc plate is not, and should be pulled from service. Have your dealer or a qualified saw-disc shop verify a cracked disc before running the head again.
What engine quirks come up for this generation of Cat forest-products machine?
No source could confirm which engine family the HA770 actually carries, and no HA770-specific engine complaints were found, so nothing model-specific can be reported here. As general guidance for mechanically-governed diesels of this vintage in forestry service, fuel filtration and water separation matter more than usual given dusty, debris-heavy sites, and cold-weather starting aids are worth confirming are present and functional on a used machine.
What electrical or sensor problems show up on machines like this?
Nothing HA770-specific turned up, so this is general guidance for vintage forestry machines of this type. Wiring routed near the felling head and rear engine compartment is exposed to limbs, brush, and debris intrusion, and chafed insulation or corroded connectors are a common source of intermittent gauge readings, warning lights, or dead circuits on older units. Tracing an intermittent electrical fault on a machine like this usually starts with harness routing near the head and boom, not the gauges themselves.
What should a buyer check on a used HA770 before purchase?
The exact engine family is not confirmed by any source, so get the engine tag and serial verified against the machine's own paperwork before assuming parts or fuel-system compatibility. Beyond that, inspect the saw-disc plate for cracking rather than just tooth wear, check the front axle and center-pin articulation for play, look at the planetary final drives for leaks or metal in the drain oil, and check hydrostatic charge pressure and drive response under load. Confirm the serial prefix matches HAB-series records rather than a similar-looking sibling model. Have your dealer verify final drive and disc-brake condition on a service test before purchase.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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