Caterpillartrack-type loadertrack loader
Caterpillar 977H
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar 977H is a track-type loader (Traxcavator) belonging to the 53A serial number prefix generation, introduced in 1960. This heavy-duty machine features a D333 turbocharged six-cylinder diesel engine producing approximately 110 kW (150 hp). The powertrain utilizes a powershift transmission and is built on a chassis architecture related to the D6 crawler tractor. Standard configurations for this model include a front-mounted loader bucket and the capability for multi-shank rear ripper attachments mounted on the drawbar.
The 977H represents a significant evolutionary step in the 977 lineage, transitioning from earlier hand-lever steering clutches to more advanced control systems. While it follows the 977D and precedes the 9/77K, its specific engineering era is defined by the shift toward turbocharged power and improved hydraulic loader controls. In today's market, the 977H is a highly sought-after machine for collectors and heritage enthusiasts due to its mechanical simplicity and robust construction, with parts demand driven primarily by vintage restoration and specialized salvage networks.
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 977H specifications
Engine
| Model | D333 turbocharged, 6-cylinder diesel |
| Net Power | 110 kW (150 hp) FWHP |
Weights
| Operating Weight | 37,500 lb (approximate) |
Dimensions
| Overall Length | 17 ft 4 in (0.1 m) |
| Overall Width | 8 ft 0 in (0 m) |
| Overall Height | 7 ft 7 in (0.18 m) |
Performance
| Transmission | Powershift |
| Serial Number Prefix | 53A |
Attachments
| Rear Ripper | Multi-shank rear ripper available, mounted on drawbar and operated via rear hydraulic circuit |
| Front Bucket | Loader bucket configuration |
Service Capacities
| Fuel Tank Capacity | 227 L (50 US gal) |
| Engine Oil | Use 30W engine oil or 15w40 diesel engine oil depending on ambient temperature and preference |
| Hydraulic System | Cat HYDO-type, Cat TO-2 compatible, or 10W viscosity oil (approx. ISO 32) |
| Transmission/Drive Train | Cat TDTO / TO-4 specification; 30W weight recommended |
| Final Drives | SAE 50 or 90W gear oil (viscosity equivalent to 50W engine oil); use Cat TO-4/TDTO rather than straight gear oil to protect seals |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
977H fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (w/ filter) | Not confirmed in publicly accessible sources for SN 53A-up | Diesel engine oil selected by ambient temperature per the era Cat lubrication chart; heavier grade in warm climates, lighter multigrade in cold-start conditions. Use viscosity-by-temperature guidance printed in the OMM lubrication chart rather than a generic modern spec. |
| Cooling system | Not confirmed in publicly accessible sources for this model | Water/antifreeze (ethylene-glylar base) with corrosion inhibitor, per standard practice for this era of Cat diesel; confirm against dealer OMM. |
| Fuel tank | 227 L (50 US gal) | Diesel fuel. Note: Machine carries a small auxiliary gasoline pony engine for starting which uses a separate small gasoline supply. |
| Transmission/powertrain (powershift transmission + bevel gear/steering compartments) | Not confirmed in publicly accessible sources | Varies by configuration/series. For later generations sharing this family line, engine-oil-grade SAE 30 or Cat TDTO-equivalent is specified. One source suggests 30W engine oil for the transmission and 30W engine oil for clutch booster/steering clutch control. |
| Final drives (each) | Not confirmed in publicly accessible sources; drain capacity estimated at a few US gallons per side based on similar-era Cat crawler final drives | SAE 50 powertrain oil meeting Cat TO-4 / TDTO specification. Do not use straight gear oil (GO) as the additive package can attack seal material. |
| Hydraulic system/tank | Not confirmed in publicly accessible sources for this model | Cat HYDO-type hydraulic oil is the general recommendation across this Traxcavator family; one source specifies 10W viscosity at 150°F or Cat TO-2 compatible fluids. |
| Pivot shaft | Not documented separately; likely serviced as a grease point under the general chassis lubrication chart. | |
| Grease (chassis/pins/pivots) | No single reservoir capacity applies | Cat Multipurpose Grease (NLGI-graded chassis grease) at pin, pivot, and linkage grease fittings per the lubrication chart. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar 977H maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the 977H beyond the schedule
Predictive Maintenance & Fluid Analysis
Monitor engine oil and hydraulic fluid for wear metals like iron or copper to detect internal component degradation. Utilize S.O.S fluid analysis on the cooling system to check for SCA concentration and glycol integrity. Regular inspection of the air cleaner service indicator is vital to prevent dust ingestion. For 53A-prefix units, verify the condition of the pony motor fuel and points to ensure reliable cold starts.
Corrective & Common Repairs
Address leaks in hydraulic hoses or cylinder seals immediately to prevent pump cavitation. If steering response becomes sluggish, inspect the steering clutch and brake band linkage for improper adjustment. Monitor the radiator and oil cooler fins for debris buildup that causes overheating. For older 20A-prefix components still present in some configurations, check the condition of the gasoline pony motor's starting performance.
Overhaul & Rebuild Points
Plan major component evaluations during PM4 intervals, focusing on the turbocharger and injector nozzle spray patterns. When undercarriage wear reaches critical limits, prepare for sprocket and track pad replacement. Significant rebuilds should include a thorough inspection of steering clutch compartments and differential gears. Evaluating the structural integrity of the boom and loader linkage is essential when performing deep-level machine restoration.
Seasonal & Environment Servicing
In high-dust or quarry environments, shorten air filter service intervals and clean radiator fins daily. During cold operations, ensure the use of appropriate engine oil viscosity as specified by the era-correct lubrication charts. For machines operating in wet conditions, prioritize frequent draining of the fuel tank sump to remove accumulated water and sediment. Always inspect track tension adjustments before seasonal transitions.
977H common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 7M-4904 | Plate-- Warning --Fuel Filter | Fuel system service | Check fitment → |
| 4M-8207 | Oil Filter Assembly | Lubrication service | Check fitment → |
| 7M-7672 | Oil Filter Assembly | Lubrication service | Check fitment → |
| 8H-8064 | Oil Filter Assembly | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
977H attachments & work tools
Blades
Front loader bucket is a standard attachment. Field listings show pusher-style blades as rear or front mount options, but specific widths and capacities are not documented for this model.
Rippers
Multi-shank rear ripper attachments are available and mounted on the drawbar behind the machine. These units run off the rear hydraulic circuit.
Winches
Not documented for this specific model.
Drawbars/counterweights
The drawbar is used as a mounting point for rear ripper attachments.
Cab/ROPS guarding options
Open ROPS configurations are documented for this machine class. Specific forestry or waste guarding packages are not listed in the provided technical data.
Hydraulic arrangement notes
The rear hydraulic circuit supports ripper attachments. Hydraulic systems typically utilize 10W viscosity oil meeting Cat TO-2 specifications.
All 977H assemblies by section
Every catalogued assembly group for the Caterpillar 977H. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Attachments
9m7332 Air Cleaner Element Lockring Group
8m5477 Air Cleaner Installation Kit--Type 2
8m5477 Air Cleaner Installation Kit--Type 1
7m914 Air Filter Service Indicator Group
7m913 Air Filter Service Indicator Group
2j8322 Internal Auxiliary Valve Group
| 2J***22 | Auxiliary Internal Valve Group | 1 |
4j3842 Internal Auxiliary Valve Group--First Type
| 4J***42 | Auxiliary Internal Valve Group | 1 |
4j3842 Internal Auxiliary Valve Group--Second Type
| 4J***42 | Auxiliary Internal Valve Group | 1 |
5j4927 Auxiliary Relief Valve Group
| 5J***27 | Auxiliary Relief Valve Group | 1 |
5j7249 Auxiliary Relief Valve Group
| 5J***49 | Auxiliary Relief Valve Group | 1 |
2m1120 Battery And Wiring Group--24 Volt--Part 2 Of 2
| 4M***20 | Battery And Wiring Group | 1 |
4m1120 Battery And Wiring Group--24 Volt--Part 1 Of 2
| 4M***20 | Battery And Wiring Group | 1 |
8f6362 Blade Group
| 8F***62 | Blade Group | 1 |
8f6373 Brace Group
| 8F***73 | Brace Group; Brace Group | 1 |
5k1283 Bucket And Support Group--2.63 Cubic Yard--116" Wide--Type 1
| 5K***83 | Bucket And Support Group | 1 |
3k9262 Bucket And Support Group
| 3K***62 | Bucket And Support Group | 1 |
5k1283 Bucket And Support Group--2.625 Cubic Yard--116" Wide--Type 2
| 5K***83 | Bucket And Support Group | 1 |
3k5554 Bucket And Support Group
| 3K***54 | Bucket And Support Group | 1 |
5k700 Bucket Assembly--Slag--2.5 Cubic Yard--96" Wide
| 5K***00 | Bucket Assembly | 1 |
4k9100 Bucket Assembly--3 Cubic Yard--96" Wide--Replaces 3k9580
| 4K***00 | Bucket Assembly | 1 |
2k4869 Bucket Assembly--1.75 Cubic Yard--77.5" Wide
| 2K***69 | Bucket Assembly | 1 |
4k4457 Bucket Assembly--2.5 Cu. Yd.--96" Wide--Replaces 4k4793
| 4K***57 | Bucket Assembly | 1 |
3k3905 Bucket Assembly--3.25 Cubic Yard--104.5" Wide
| 3K***05 | Bucket Assembly | 1 |
3k9580 Bucket Assembly--3 Cubic Yard--96" Wide
| 3K***80 | Bucket Assembly | 1 |
4k5370 Bucket Group--Quarry--2.5 Cubic Yard--96" Wide--Replaces 3k4682
| 4K***70 | Bucket Group | 1 |
2k4827 Bucket Group--Skeleton--2.25 Cubic Yard--96" Wide
| 2K***27 | Bucket Group | 1 |
4k4793 Bucket Group--Steel Mill--2.5 Cubic Yard--96" Wide
| 4K***93 | Bucket Group | 1 |
3k4682 Bucket Group--Quarry--2.5 Cubic Yard--96" Wide
| 3K***82 | Bucket Group | 1 |
2j6684 Bulldozer Arrangement--Angling Blade
| 2J***84 | Bulldozer Arrangement | 1 |
2k5356 Bulldozer Group--Straight Blade--104" Wide
| 2K***56 | Bulldozer Group | 1 |
2j6657 C-Frame Group
| 2J***57 | C--Frame Group | 1 |
9m8059 Carburetor Conversion Group--Field Installation
3k9322 Carriage And Clamp Group
| 3K***22 | Carriage And Clamp Group | 1 |
1k8365 Carriage And Clamp Group--Type 2
| 1K***65 | Carriage And Clamp Group | 1 |
1k8365 Carriage And Clamp Group--Type 1
| 1K***65 | Carriage And Clamp Group | 1 |
7m2739 Choke And Throttle Control Service Group
| 7M***39 | Choke And Throttle Control Service Group | 1 |
4j5488 Control Valve Group
| 4J***88 | Control Valve Group | 1 |
4j5488 Control Valve Group--Type 2
| 4J***88 | Control Valve Group | 1 |
4j9664 Control Valve Group
| 4J***64 | Control Valve Group | 1 |
3j7599 Conversion Group--Type 2
| 3J***99 | Conversion Group | 1 |
3j7599 Conversion Group--Type 1
| 3J***99 | Conversion Group | 1 |
3k6940 Counterweight Group--Rear Mounted--2400 Pounds
| 3K***40 | Counterweight Group | 1 |
2s3025 Protection Cover Group--Oil Filler Cap
3k5200 Cylinder Group--5" X 21.38"
| 3K***00 | Cylinder Group | 1 |
1k8206 Cylinder Group--5" Bore X 14" Stroke--Type 1
| 1K***06 | Cylinder Group | 1 |
2k6276 Cylinder Group--4.5" X 18.63"
| 2K***76 | Cylinder Group | 1 |
1k8206 Clylinder Group--5" Bore X 14" Stroke--Type 3
| 1K***06 | Cylinder Group | 1 |
2k6841 Cylinder Group--4" Bore X 18.60" Stroke
| 2K***41 | Cylinder Group | 1 |
8j5733 Cylinder Group--Replaces 3k5200 Shown On Page 270
| 8J***33 | Cylinder Group | 1 |
1k8206 Cylinder Group--5" Bore X 14" Stroke--Type 2
| 1K***06 | Cylinder Group | 1 |
3k481 Cylinder Group--5.5" Bore X 14" Stroke R.H.--Type 2
| 3K***82 | Cylinder Group--R.H.,Cylinder Group--L.H.; Cylinder Group-- L.H. | 1 |
3k481 Cylinder Group--R.H.--5.5" Bore X 14" Stroke--Type 1
| 3K***81 | Cylinder Group--R.H.,Cylinder Group--L.H.; Cylinder Group-- R.H. | 1 |
Cylinder Head Assembly
4k4263 Cylinder Mounting Group--Type 1
| 4K***63 | Cylinder Mounting Group | 1 |
4k4263 Cylinder Mounting Group--Type 2
| 4K***63 | Cylinder Mounting Group | 1 |
5m1618 Dash Lamp Assembly--24 Volt
| 5M***18 | Dash Lamp Assembly | 1 |
7m6255 Decelerator Group--Field Installation--Type 3
| 7M***55 | Decelerator Group | 1 |
7m6255 Decelerator Group--Field Installation--Type 1
| 7M***55 | Decelerator Group | 1 |
7m6255 Decelerator Group--Field Installation--Type 2
| 7M***55 | Decelerator Group | 1 |
5m8387 Direct Electric Starting Arrangement--24 Volt--Factory Installation
| 0L***51 | Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold | 2 |
| 0L***21 | Plug (.0598" Thick) | 1 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 4 |
9f740 Discharger
| 9F***40 | Discharger Group | 1 |
4h9108 Drawbar Group--Swinging Type
| 4H***08 | Drawbar Group | 1 |
5m1613 Ether Starting Aid Group--Type 2
| 5M***13 | Ether Starting Aid Group | 1 |
5m1613 Ether Starting Aid Group--Type 1
| 5M***13 | Ether Starting Aid Group | 1 |
2j8330 External Auxiliary Valve Group
| 2J***30 | External Auxiliary Valve Group | 1 |
2s853 Fan Group--Self Cleaning
| 2S***53 | Fan Group | 1 |
9m935 Fan Group--Reversible Blade
| 9M***35 | Fan Group | 1 |
3k5237 Field Conversion Arrangement
| 3J***09 | Field Conversion Group | 1 |
| 3K***37 | Field Conversion Arrangement | 1 |
| 3K***05 | Hydraulic Lines Group | 1 |
3k5239 Field Conversion Arrangement
| 3J***10 | Field Conversion Group | 1 |
| 3K***39 | Field Conversion Arrangement | 1 |
| 3K***05 | Hydraulic Lines Group | 1 |
3k5235 Field Conversion Arrangement
| 2J***60 | Field Conversion Group | 1 |
| 3K***35 | Field Conversion Arrangement | 1 |
| 3K***05 | Hydraulic Lines Group | 1 |
3k5236 Field Conversion Arrangement
| 2J***60 | Field Conversion Group | 1 |
| 3K***36 | Field Conversion Arrangement | 1 |
| 3K***03 | Hydraulic Lines Group | 1 |
3k5238 Field Conversion Arrangement
| 3J***10 | Field Conversion Group | 1 |
| 3K***38 | Field Conversion Arrangement | 1 |
| 3K***70 | Hydraulic Lines Group | 1 |
4j3213 Field Conversion Group--2 Valve To 3 Valve--Type 2
| 4J***13 | Field Conversion Group | 1 |
3j110 Field Conversion Group--3 Valve To 4 Valve
| 3J***10 | Field Conversion Group | 1 |
2j9560 Field Conversion Group--2 Valve To 3 Valve
| 2J***60 | Field Conversion Group | 1 |
4j3213 Field Conversion Group--2 Valve To 3 Valve
| 4J***13 | Field Conversion Group | 1 |
4j3215 Field Conversion Group--2 Valve To 4 Valve
| 4J***13 | Field Conversion Group | 1 |
| 4J***14 | Field Conversion Group | 1 |
| 4J***15 | Field Conversion Group | 1 |
4j3214 Field Conversion Group--3 Valve To 4 Valve
| 4J***14 | Field Conversion Group | 1 |
3j109 Field Conversion Group--2 Valve To 4 Valve
| 2J***60 | Field Conversion Group | 1 |
| 3J***09 | Field Conversion Group | 1 |
| 3J***10 | Field Conversion Group | 1 |
4j3213 Field Conversion Group--2 Valve To 3 Valve--Type 3
| 4J***13 | Field Conversion Group | 1 |
3k6405 Conversion Group
| 3K***05 | Field Conversion Group | 1 |
8m3993 Final Drive Seal Group--2 Groups Required
| 8M***93 | Final Drive Seal Group | 1 |
2m856 Flood Lamp Assembly--12 Volt
| 2M***56 | Flood Lamp Assembly | 1 |
Flywheel--Type 2
Flywheel--Type 1
Flywheel--Type 3
5k2001 Frame And Clamp Group--Side View--Replaces 4k325
| 5K***01 | Frame And Clamp Group | 1 |
4k325 Frame And Clamp Group
| 4K***25 | Frame And Clamp Group | 1 |
2k5054 Frame And Clamp Group
| 2K***54 | Frame And Clamp Group | 1 |
4k4846 Front Hydraulic Lines Group--Type 2
| 4K***46 | Front Hydraulic Lines Group | 1 |
6k1675 Front Hydraulic Lines Group--Type 2
| 6K***75 | Front Hydraulic Lines Group | 1 |
3k9225 Front Hydraulic Lines Group--Type 2
| 3K***25 | Front Hydraulic Lines Group | 1 |
3k9225 Front Hydraulic Lines Group--Type 3
| 3K***25 | Front Hydraulic Lines Group | 1 |
3k8398 Front Hydraulic Lines Group
| 3K***98 | Front Hydraulic Lines Group | 1 |
6k1675 Front Hydraulic Lines Group--Multi-Purpose Bucket--Type 1--Replaces 4k4846
| 6K***75 | Front Hydraulic Lines Group | 1 |
4k4846 Front Hydraulic Lines Group--Type 1
| 4K***46 | Front Hydraulic Lines Group | 1 |
1k8923 Front Hydraulic Lines Group--Type 2
| 1K***23 | Front Hydraulic Lines Group | 1 |
3k9225 Front Hydraulic Lines Group--Type 1
| 3K***25 | Front Hydraulic Lines Group | 1 |
1k8923 Front Hydraulic Lines Group--Type 1
| 1K***23 | Front Hydraulic Lines Group | 1 |
4s8979 Front Idler Group--Part 1 Of 2
| 4S***79 | Front Idler Group | 1 |
4s8979 Front Idler Group--Part 2 Of 2
| 4S***79 | Front Idler Group | 1 |
7m2740 Fuel Priming Pump Group
| 7M***40 | Fuel Priming Pump Group | 1 |
2m6496 Generator Assembly--24 Volt, 15 Ampere
| 2M***96 | Generator Assembly | 1 |
1s151 Generator Assembly--24 Volt, 15 Ampere
| 1S***51 | Generator Assembly | 1 |
2m5367 Generator Group--24 Volt, 15 Ampere Type 1
| 2M***67 | Generator Group | 1 |
2m5367 Generator Group--24 Volt, 15 Ampere--Type 2
| 2M***67 | Generator Group | 1 |
2m4299 Glow Plug And Wiring Group--Type 2
| 2M***99 | Glow Plug And Wiring Group | 1 |
2m4299 Glow Plug And Wiring Group--24 Volt--Type 4
| 2M***99 | Glow Plug And Wiring Group | 1 |
2m4299 Glow Plug And Wiring Group--Type 1
| 2M***99 | Glow Plug And Wiring Group | 1 |
2m4299 Glow Plug And Wiring Group--24 Volt--Type 3
| 2M***99 | Glow Plug And Wiring Group | 1 |
8f9866 Grease Gun
| 8F***66 | Grease Gun As | 1 |
4k354 Gusset Shoe Group
| 4K***54 | Gusset Shoe Group | 1 |
7b4464 Front Pull Hook Group
| 7B***64 | Hook Group-Front Pull | 1 |
3k4066 Hydraulic Arrangement
| 2J***21 | Tank And Valve Group | 1 |
| 3K***66 | Hydraulic Arrangement | 1 |
| 3K***03 | Hydraulic Lines Group | 1 |
3k4065 Hydraulic Arrangement
| 2J***21 | Tank And Valve Group | 1 |
| 3K***65 | Hydraulic Arrangement | 1 |
| 3K***05 | Hydraulic Lines Group | 1 |
4k4068 Hydraulic Arrangement
| 2J***30 | External Auxiliary Valve Group | 1 |
| 3J***12 | Valve Lines Group | 1 |
| 3K***60 | Hydraulic Valve Control Group | 1 |
3k4097 Hydraulic Arrangement
| 2J***29 | Tank And Valve Group | 1 |
| 2J***30 | External Auxiliary Valve Group | 1 |
| 3J***12 | Valve Lines Group | 1 |
4k4067 Hydraulic Arrangement
| 3K***60 | Hydraulic Valve Control Group | 1 |
| 4J***47 | Tank And Valve Group | 1 |
| 4K***67 | Hydraulic Arrangement | 1 |
3k6671 Hydraulic Control Group--Rear--No. 4 Valve--Type 3
| 3K***71 | Hydraulic Control Group | 1 |
3k6671 Hydraulic Control Group--Rear--No. 4 Valve--Type 1
| 3K***71 | Hydraulic Control Group | 1 |
3k6671 Hydraulic Control Group--Rear--No. 4 Valve--Type 2
| 3K***71 | Hydraulic Control Group | 1 |
2k9053 Front Hydraulic Lines Group--Type 1
| 2K***53 | Hydraulic Front Lines Group; Front Hydraulic Lines Group | 1 |
2k9053 Front Hydraulic Lines Group--Type 2
| 2K***53 | Hydraulic Front Lines Group; Front Hydraulic Lines Group | 1 |
1k8989 Front Hydraulic Lines Group--30" Extension--Type 3
| 1K***89 | Hydraulic Lines Group; Front Hydraulic Lines Group | 1 |
1k8989 Front Hydraulic Lines Group--30" Extension--Type 2
| 1K***89 | Hydraulic Lines Group; Front Hydraulic Lines Group | 1 |
3k9321 Front Hydraulic Lines Group--Type 2
| 3K***21 | Hydraulic Lines Group; Front Hydraulic Lines Group | 1 |
3k6670 Hydraulic Lines Group--Rear--No. 4 Valve--Type 1
| 3K***70 | Hydraulic Lines Group | 1 |
3k5505 Hydraulic Lines Group--Side
| 3K***05 | Hydraulic Lines Group | 1 |
3k5503 Hydraulic Lines Group--Rear--Type 1
| 3K***03 | Hydraulic Lines Group | 1 |
3k5503 Hydraulic Lines Group--Rear--Type 2
| 3K***03 | Hydraulic Lines Group | 1 |
3k6670 Hydraulic Lines Group--Rear--No. 4 Valve--Type 2
| 3K***70 | Hydraulic Lines Group | 1 |
4k1736 Front Hydraulic Lines Group
| 4K***36 | Hydraulic Lines Group; Front Hydraulic Lines Group | 1 |
2k6238 Front Hydraulic Lines Group
| 2K***38 | Hydraulic Lines Group; Front Hydraulic Lines Group | 1 |
5k2131 Hydraulic Lines Group--Front
| 5K***31 | Hydraulic Lines Group | 1 |
1k8989 Front Hydraulic Lines Group--30" Extension--Type 1
| 1K***89 | Hydraulic Lines Group; Front Hydraulic Lines Group | 1 |
3k9321 Front Hydraulic Lines Group--Type 1
| 3K***21 | Hydraulic Lines Group; Front Hydraulic Lines Group | 1 |
4k4591 Hydraulic Lines Group--Side
| 4K***91 | Hydraulic Lines Group | 1 |
2k8124 Front Hydraulic Lines Group
| 2K***24 | Hydraulic Lines Group; Front Hydraulic Lines Group | 1 |
3k5764 Hydraulic Valve Control Group--Rear--Type 2
| 3K***64 | Hydraulic Valve Control Group | 1 |
3k5760 Hydraulic Valve Control Group
| 3K***60 | Hydraulic Valve Control Group | 1 |
3k5764 Hydraulic Valve Control Group--Rear--Type 3
| 3K***64 | Hydraulic Valve Control Group | 1 |
3k5764 Hydraulic Valve Control Group--Rear--Type 1
| 3K***64 | Hydraulic Valve Control Group | 1 |
4j8126 Internal Auxiliary Valve Group
| 4J***26 | Internal Auxiliary Valve Group | 1 |
1m1882 Flood Lamp Assembly--24 Volt
| 1M***82 | Lamp Group | 1 |
3k480 Lift Arm Extension Arrangement
| 1K***36 | Lift Arm Extension Group | 1 |
| 1K***89 | Hydraulic Lines Group; Front Hydraulic Lines Group | 1 |
| 3K***80 | Lift Arm Extension Arrangement | 1 |
1k8736 Lift Arm Extension Group
| 1K***36 | Lift Arm Extension Group | 1 |
3k7259 Lift Cylinder Group--R.H.--7.25" X 32"
| 3K***60 | Lift Cylinder Group--R.H.,Lift Cylinder Group--L.H.; Lift Cylinder Group-- L.H. | 1 |
5m1513 Lighting System Group--12 Volt--4 Lamp
| 5M***13 | Lighting System Group | 1 |
5m1522 Lighting System Group--24 Volt--4 Lamp
| 5M***22 | Lighting System Group | 1 |
3k1786 Log Fork Group
| 3K***86 | Log Fork Group | 1 |
3k8427 Log Fork Group
| 3K***27 | Log Fork Group | 1 |
2k5939 Lumber Fork Group--Adjustable Width
| 2K***39 | Lumber Fork Group | 1 |
4s8983 Main Frame Support Group
| 4S***83 | Main Frame Support Group | 1 |
4j595 Make-Up Valve Group
| 4J***95 | Make-Up Valve Group | 1 |
8m5377 Muffler Installation Group--Field Installation
4k4625 Multi-Purpose Bucket Arrangement
| 2K***19 | Drive Screw--For Mounting Name Plate | 3 |
| 3K***81 | Cylinder Group--R.H.,Cylinder Group--L.H.; Cylinder Group-- R.H. | 1 |
| 3K***82 | Cylinder Group--R.H.,Cylinder Group--L.H.; Cylinder Group-- L.H. | 1 |
6k1780 Multi-Purpose Bucket Arrangement--Replaces 4k4625
| 2K***19 | Drive Screw--For Mounting Name Plate | 3 |
| 3K***81 | Cylinder Group--R.H.,Cylinder Group--L.H.; Cylinder Group-- R.H. | 1 |
| 3K***82 | Cylinder Group--R.H.,Cylinder Group--L.H.; Cylinder Group-- L.H. | 1 |
5k5714 Multi-Purpose Bucket Conversion Arrangement--Field Installation
| 5J***25 | Relief Valve Group | 1 |
| 5J***26 | Tilt Relief Valve Group | 1 |
| 5J***27 | Auxiliary Relief Valve Group | 1 |
4k4406 Multi-Purpose Bucket Group--2.5 Cu. Yd.--96" Wide
| 4K***06 | Multi-Purpose Bucket Group | 1 |
4k4406 Multi-Purpose Bucket Group--2.5 Cu. Yd.--96" Wide--Type 2
| 4K***06 | Multi-Purpose Bucket Group | 1 |
6k1779 Multi-Purpose Bucket Group--Replaces 4k4406
| 6K***79 | Multi-Purpose Bucket Group | 1 |
Name Plates And Transfers
| 2M***31 | Plate; Serial Number On R.H. Side Of Cylinder Block And R.H. Side Of Loader Frame | 2 |
| 4B***58 | Screw (Identification Plate) Mounting | 6 |
| 4B***59 | Drive Screw Serial Number Plate | 2 |
8m8076 Oil Steering Brake Group--Top View--Field Installation -Part 2 Of 2
| 8M***76 | Oil Steering Brake Group | 1 |
8m8076 Oil Steering Brake Group--Side View--Field Installation -Part 1 Of 2
| 8M***76 | Oil Steering Brake Group | 1 |
9m1426 Oil System Group--Field Installation--Type 1
9m1426 Oil System Group--Field Installation--Type 2
3k9323 Pulpwood Fork Arrangement
| 1K***06 | Cylinder Group | 1 |
| 3K***21 | Hydraulic Lines Group; Front Hydraulic Lines Group | 1 |
| 3K***22 | Carriage And Clamp Group | 1 |
1k8536 Pulpwood Fork Arrangement
| 1K***06 | Cylinder Group | 1 |
| 1K***65 | Carriage And Clamp Group | 1 |
| 1K***36 | Pulpwood Fork Arrangements | 1 |
9h2256 Pump Assembly
| 9H***56 | Pump Assembly | 1 |
2j9815 Relief Valve Group--Type 2
| 2J***15 | Relief Valve Group | 1 |
5j4925 Relief Valve Group
| 5J***25 | Relief Valve Group | 1 |
2j9815 Relief Valve Group--Type 1
| 2J***15 | Relief Valve Group | 1 |
4j5486 Relief Valve Group
| 4J***86 | Relief Valve Group | 1 |
5k4187 Rock Bucket Side Plate Group--Field Installation
| 5K***87 | Rock Bucket Side Plate Group | 1 |
5k3605 Rock Loading Bucket Assembly--3 Cubic Yard--104.50" Wide
| 5K***05 | Rock Loading Bucket Assembly | 1 |
8m1568 Separate Lubrication Conversion Group--Field Installation--Type 2
8m1568 Separate Lubrication Conversion Group--Field Installation--Type 1
3k5566 Side Dump Bucket Arrangement
| 2K***24 | Hydraulic Lines Group; Front Hydraulic Lines Group | 1 |
| 3K***00 | Cylinder Group | 1 |
| 3K***54 | Bucket And Support Group | 1 |
5k1170 Side Dump Bucket Arrangement--Replaces 3k9268
| 3K***00 | Cylinder Group | 1 |
| 3K***25 | Front Hydraulic Lines Group | 1 |
| 5K***70 | Side Dump Bucket Arrangement | 1 |
3k9268 Side Dump Bucket Arrangement-- Only Separate Parts Serviced
| 3K***00 | Cylinder Group | 1 |
| 3K***25 | Front Hydraulic Lines Group | 1 |
| 3K***62 | Bucket And Support Group | 1 |
3k9243 Side Dump Bucket Lines Group--Field Installation
| 3K***43 | Side Dump Bucket Lines Group | 1 |
3k6731 Spill Plate Extension Group
| 3K***31 | Spill Plate Extension Group | 1 |
5k3753 Spill Plate Extension Group
| 5K***53 | Spill Plate Extension Group | 1 |
3k6729 Spill Plate Extension Group
| 3K***29 | Spill Plate Extension Group | 1 |
5k3808 Spill Plate Extension Group
| 5K***08 | Spill Plate Extension Group | 1 |
8m9249 Starter Pinion Group--Field Installation--Type 1
8m9249 Starter Pinion Group--Field Installation--Type 2
8h1913 Motor Assembly--24 Volt--Part 1 Of 2
| 8H***13 | Starting Motor Assembly | 1 |
8h1913 Motor Assembly--24 Volt--Part 2 Of 2
| 8H***13 | Starting Motor Assembly | 1 |
1m55 Starting Motor Group--24 Volt
| 1M***55 | Starting Motor Group | 1 |
3k1650 Light Switch Assembly
| 3K***50 | Switch As-Light; -Floodlights | 1 |
4m1812 Solenoid Switch Assembly
| 4M***12 | Switch As-Solenoid | 1 |
4j2149 Tank And Valve Group--Front View--Part 1 Of 2 --Type 5
| 4J***49 | Tank And Valve Group | 1 |
4j2147 Tank And Valve Group--Side View--Part 2 Of 2 --Type 4
| 4J***47 | Tank And Valve Group | 1 |
2j8329 Tank And Valve Group--4 Valve--Side View--Part 2 Of 2 --Type 5
| 2J***29 | Tank And Valve Group | 1 |
4j2147 Tank And Valve Group--Side View--Part 2 Of 2 --Type 5
| 4J***47 | Tank And Valve Group | 1 |
2j8321 Tank And Valve Group--3 Valve--Side View--Part 2 Of 2 --Type 3
| 2J***21 | Tank And Valve Group | 1 |
2j8329 Tank And Valve Group--4 Valve--Front View--Part 1 Of 2 --Type 4
| 2J***29 | Tank And Valve Group | 1 |
2j8321 Tank And Valve Group--3 Valve--Side View--Part 2 Of 2 --Type 4
| 2J***21 | Tank And Valve Group | 1 |
4j2149 Tank And Valve Group--Front View--Part 1 Of 2 --Type 3
| 4J***49 | Tank And Valve Group | 1 |
4j2149 Tank And Valve Group--Side View--Part 2 Of 2 --Type 4
| 4J***49 | Tank And Valve Group | 1 |
2j8321 Tank And Valve Group--3 Valve--Front View--Part 2 Of 2 --Type 2
| 2J***21 | Tank And Valve Group | 1 |
2j8329 Tank And Valve Group--4 Valve--Side View--Part 2 Of 2 --Type 2
| 2J***29 | Tank And Valve Group | 1 |
2j8321 Tank And Valve Group--3 Valve--Front View--Part 1 Of 2 --Type 5
| 2J***21 | Tank And Valve Group | 1 |
4j2147 Tank And Valve Group--Front View--Part 1 Of 2 --Type 4
| 4J***47 | Tank And Valve Group | 1 |
4j2147 Tank And Valve Group--Side View--Part 2 Of 2 --Type 3
| 4J***47 | Tank And Valve Group | 1 |
4j2149 Tank And Valve Group--Side View--Part 2 Of 2 --Type 5
| 4J***49 | Tank And Valve Group | 1 |
2j8321 Tank And Valve Group--3 Valve--Front View--Part 1 Of 2 --Type 1
| 2J***21 | Tank And Valve Group | 1 |
4j2149 Tank And Valve Group--Side View--Part 2 Of 2 --Type 3
| 4J***49 | Tank And Valve Group | 1 |
4j2147 Tank And Valve Group--Side View--Part 2 Of 2 --Type 1
| 4J***47 | Tank And Valve Group | 1 |
2j8321 Tank And Valve Group--3 Valve--Side View--Part 2 Of 2 --Type 1
| 2J***21 | Tank And Valve Group | 1 |
2j8321 Tank And Valve Group--3 Valve--Front View--Part 1 Of 2 --Type 3
| 2J***21 | Tank And Valve Group | 1 |
4j2147 Tank And Valve Group--Front View--Part 1 Of 2 --Type 3
| 4J***47 | Tank And Valve Group | 1 |
2j8321 Tank And Valve Group--3 Valve--Side View--Part 2 Of 2 --Type 2
| 2J***21 | Tank And Valve Group | 1 |
2j8329 Tank And Valve Group--4 Valve--Front View--Part 1 Of 2 --Type 3
| 2J***29 | Tank And Valve Group | 1 |
4j2149 Tank And Valve Group--Front View--Part 1 Of 2 --Type 4
| 4J***49 | Tank And Valve Group | 1 |
2j8329 Tank And Valve Group--4 Valve--Front View--Part 1 Of 2-- Type 1
| 2J***29 | Tank And Valve Group | 1 |
4j2149 Tank And Valve Group--Front View--Part 1 Of 2 --Type 2
| 4J***49 | Tank And Valve Group | 1 |
4j2149 Tank And Valve Group--Side View--Part 2 Of 2 --Type 2
| 4J***49 | Tank And Valve Group | 1 |
2j8321 Tank And Valve Group--3 Valve--Part 2 Of 2-- Side View--Type 5
| 2J***21 | Tank And Valve Group | 1 |
4j2147 Tank And Valve Group--Front View--Part 1 Of 2 --Type 1
| 4J***47 | Tank And Valve Group | 1 |
4j2149 Tank And Valve Group--Side View--Part 2 Of 2 --Type 1
| 4J***49 | Tank And Valve Group | 1 |
2j8329 Tank And Valve Group--4 Valve--Side View--Part 2 Of 2 --Type 4
| 2J***29 | Tank And Valve Group | 1 |
4j2149 Tank And Valve Group--Front View--Part 1 Of 2 --Type 1
| 4J***49 | Tank And Valve Group | 1 |
2j8321 Tank And Valve Group--3 Valve--Front View--Part 1 Of 2 --Type 4
| 2J***21 | Tank And Valve Group | 1 |
2j8329 Tank And Valve Group--4 Valve--Side View--Part 2 Of 2 --Type 3
| 2J***29 | Tank And Valve Group | 1 |
2j8329 Tank And Valve Group--4 Valve--Front View--Part 1 Of 2 --Type 2
| 2J***29 | Tank And Valve Group | 1 |
4j2147 Tank And Valve Group--Side View--Part 2 Of 2 --Type 2
| 4J***47 | Tank And Valve Group | 1 |
2j8329 Tank And Valve Group--4 Valve--Side View--Part 2 Of 2 --Type 1
| 2J***29 | Tank And Valve Group | 1 |
2j8329 Tank And Valve Group--4 Valve--Front View--Part 1 Of 2 --Type 5
| 2J***29 | Tank And Valve Group | 1 |
4j2147 Tank And Valve Group--Front View--Part 1 Of 2 --Type 5
| 4J***47 | Tank And Valve Group | 1 |
4j2147 Tank And Valve Group--Front View--Part 1 Of 2 --Type 2
| 4J***47 | Tank And Valve Group | 1 |
5j4926 Tilt Relief Valve Group
| 5J***26 | Tilt Relief Valve Group | 1 |
8m9863 Tool Group
| 8M***63 | Tool Group | 1 |
9s7977 Tool Group
| 9S***77 | Tool Group-Hand | 1 |
5k2837 Tooth Group
| 5K***37 | Tooth Group | 1 |
4k2024 Tooth Group
| 4K***24 | Tooth Group | 1 |
2k4811 Tooth Group
| 2K***11 | Tooth Group | 1 |
4k2023 Tooth Group
| 4K***23 | Tooth Group | 1 |
2k4745 Tooth Group
| 2K***45 | Tooth Group | 1 |
4k9490 Tooth Group
| 4K***90 | Tooth Group | 1 |
4k4734 Tooth Group
| 4K***34 | Tooth Group | 1 |
5k7585 Tooth Group--Short Tip
| 5K***85 | Tooth Group | 1 |
4k1654 Tooth Group
| 4K***54 | Tooth Group | 1 |
4k8936 Tooth Group
| 4K***36 | Tooth Group | 1 |
3k8399 Top Clamp Arrangement
| 3K***81 | Cylinder Group--R.H.,Cylinder Group--L.H.; Cylinder Group-- R.H. | 1 |
| 3K***82 | Cylinder Group--R.H.,Cylinder Group--L.H.; Cylinder Group-- L.H. | 1 |
| 3K***01 | Top Clamp Group | 1 |
4k1735 Top Clamp Arrangement
| 2K***41 | Cylinder Group | 1 |
| 4K***25 | Frame And Clamp Group | 1 |
| 4K***35 | Top Clamp Arrangement | 1 |
5k2003 Top Clamp Arrangement--Replaces 4k1735 Listed On Page 284
| 2K***41 | Cylinder Group | 1 |
| 5K***01 | Frame And Clamp Group | 1 |
| 5K***03 | Top Clamp Arrangement | 1 |
3k1756 Top Clamp Arrangement
| 2K***53 | Hydraulic Front Lines Group; Front Hydraulic Lines Group | 1 |
| 3K***81 | Cylinder Group--R.H.,Cylinder Group--L.H.; Cylinder Group-- R.H. | 1 |
| 3K***82 | Cylinder Group--R.H.,Cylinder Group--L.H.; Cylinder Group-- L.H. | 1 |
2k6249 Top Clamp Arrangement
| 2K***54 | Frame And Clamp Group | 1 |
| 2K***38 | Hydraulic Lines Group; Front Hydraulic Lines Group | 1 |
| 2K***49 | Top Clamp Arrangements | 1 |
3k1701 Top Clamp Group
| 3K***01 | Top Clamp Group | 1 |
4s8982 Track Carrier Roller Group--4 Required
| 4S***82 | Track Carrier Roller Group | 1 |
8m7376 Track Group--18" Flat Shoe--2 Groups Required
| 8M***76 | Track Group | 1 |
2m9292 Track Group--18" Flat Shoe--2 Groups Required
| 2M***92 | Track Group | 1 |
8m7374 Track Group--18" Flat Shoe--2 Groups Required
| 8M***74 | Track Group | 1 |
5m1589 Track Group--18" Flat Shoe--2 Groups Required
| 5M***89 | Track Group | 1 |
9m4773 Track Group--16" Double Grouser Shoe--2 Groups Required
| 9M***73 | Track Group | 1 |
1s7281 Track Group--18" Double Grouser Shoe--2 Groups Required
| 1S***81 | Track Group | 1 |
7m6824 Track Group--18" Flat Shoe--2 Groups Required
| 7M***24 | Track Group | 1 |
7m6810 Track Group--18" Flat Shoe--2 Groups Required
| 7M***10 | Track Group | 1 |
4s8978 Track Roller Frame Group
| 4S***78 | Track Roller Frame Group | 1 |
3s745 Track Roller Group--Single Flange--6 Required
| 3S***45 | Track Roller Group | 1 |
4s8980 Track Roller Group--Single Flange--6 Required
| 4S***81 | Track Roller Group; Track Roller Group-- Double Flange | 1 |
2m7368 Track Roller Guard Group
| 2M***68 | Track Roller Guard Group | 1 |
4s8977 Traxcavator Arrangement--Steel Mill
| 3K***59 | Lift Cylinder Group--R.H.,Lift Cylinder Group--L.H.; Lift Cylinder Group-- R.H. | 1 |
| 3K***60 | Lift Cylinder Group--R.H.,Lift Cylinder Group--L.H.; Lift Cylinder Group-- L.H. | 1 |
| 3K***29 | Lift Cylinder Arrangement | 1 |
2k5116 Trunnion Group
| 2K***16 | Trunnion Group | 1 |
7m7708 Turbocharger Oil System Group--Field Installation--Type 2
7m7708 Turbocharger Oil System Group--Field Installation Type 1
4j2993 Relief Valve Group--Type 1
| 4J***93 | Valve Group | 1 |
4j2993 Relief Valve Group--Type 2
| 4J***93 | Valve Group | 1 |
3j112 Hydraulic Lines Group--No. 4 Valve--Type 2
| 3J***12 | Valve Lines Group | 1 |
3j112 Hydraulic Lines Group--No. 4 Valve--Type 1
| 3J***12 | Valve Lines Group | 1 |
Diesel Engine
Accessory Drive
Air Cleaner
Belt Tightener
Breather
Breather And Oil Filler
Camshaft
Compression Release Control
Connecting Rod And Piston (5m1785 N/S)--6 Required
| 5M***85 | Connecting Rod And Piston | 1 |
Crankcase Guard
Crankshaft
Crankshaft Bearing Replacement Groups
Cylinder Block And Covers--Side View- Part 1 Of 2
Cylinder Block And Covers--End View -Part 2 Of 2
Cylinder Block And Covers--End View- Part 2 Of 2
Cylinder Block And Covers--Side View -Part 1 Of 2
4m9001 Cylinder Block Assembly
| 4M***01 | Cylinder Block Assembly | 1 |
7m4403 Cylinder Block Assembly--Type 2
| 7M***03 | Cylinder Block Assembly | 1 |
7m4403 Cylinder Block Assembly--Type 1
| 7M***03 | Cylinder Block Assembly | 1 |
Cylinder Head And Valve Mechanism--Side View- Part 1 Of 2
Cylinder Head And Valve Mechanism--End View- Part 2 Of 2
Cylinder Head And Valve Mechanism--Side View -Part 1 Of 2
Cylinder Head And Valve Mechanism--End View -Part 2 Of 2
Cylinder Head And Valve Mechanism--End View-Part 2 Of 2
Cylinder Head And Valve Mechanism--Side View-Part 1 Of 2
7m201 Engine And Torque Converter Oil Cooler Group
| 7M***01 | Engine And Torque Converter Oil Cooler Group | 1 |
1m6932 Engine And Torque Converter Oil Cooler Group
| 1M***32 | Engine And Torque Converter Oil Cooler Group | 1 |
Exhaust Extension
Fan
Flywheel
Flywheel (9h5928 N/S)
| 9H***28 | Flywheel Group | 1 |
Fuel Filter
Fuel Injection Valves And Lines
Fuel Pump Housing And Governor
2m4050 Fuel Pump Housing Group
| 2M***50 | Fuel Pump Housing Group | 1 |
Fuel System
Fuel Transfer Pump And Filter
5m5945 Fuel Transfer Pump Group
| 5M***45 | Fuel Transfer Pump Group | 1 |
Governor Control
8h2862 Governor Group
| 8H***62 | Governor Group | 1 |
Manifold
4m8207 Oil Filter Assembly
| 4M***07 | Oil Filter Assembly | 1 |
7m7672 Oil Filter Assembly
| 7M***72 | Oil Filter Assembly | 1 |
Oil Pump
2m832 Oil Pump Assembly--Type 1
| 2M***32 | Oil Pump Assembly | 1 |
2m832 Oil Pump Assembly
| 2M***32 | Oil Pump Assembly | 1 |
7m4201 Oil Pump Assembly--Type 1
| 7M***01 | Oil Pump Assembly | 1 |
7m4201 Oil Pump Assembly--Type 2
| 7M***01 | Oil Pump Assembly | 1 |
2m832 Oil Pump Assembly--Type 2
| 2M***32 | Oil Pump Assembly | 1 |
8m4616 Oil Pump Assembly
| 8M***16 | Oil Pump Assembly | 1 |
7s4327 Pressure Relief Valve Group
| 7S***27 | Pressure Relief Valve Group | 1 |
5s6849 Pressure Relief Valve Group
| 5S***49 | Pressure Relief Valve Group | 1 |
9h3718 Radiator Group--Side View -Part 2 Of 2
| 9H***18 | Radiator Group | 1 |
9h3718 Radiator Group--Rear View -Part 1 Of 2
| 9H***18 | Radiator Group | 1 |
Service Meter
4m9052 Turbocharger Assembly
| 4M***52 | Turbocharger Assembly | 1 |
Turbocharger Oil Lines
7m7712 Turbocharger Oil Lines Group
| 7M***12 | Turbocharger Oil Lines Group | 1 |
4m4404 Water Pump Group
| 4M***04 | Water Pump Group | 1 |
1s5888 Water Pump Group--Field Installation--Type 1
| 1S***88 | Water Pump Group | 1 |
1s5888 Water Pump Group--Field Installation--Type 2
| 1S***88 | Water Pump Group | 1 |
Hydraulic Control
2j8182 Control Valve Group
| 2J***82 | Control Valve Group | 1 |
Cylinder Lines
Hand Control
3k6609 Hydraulic Oil Filter Group
| 3K***09 | Hydraulic Oil Filter Group | 1 |
Hydraulic Pump And Lines
6j761 Hydraulic Pump Assembly--Field Installation
| 6J***61 | Hydraulic Pump Assembly | 1 |
3k1796 Hydraulic Pump Assembly
| 3K***96 | Hydraulic Pump Assembly | 1 |
3k2971 Lift Cylinder Group--R.H.--6.50" Bore X 32" Stroke
| 3K***71 | Lift Cylinder Group | 1 |
3j319 Relief Valve Group
| 3J***19 | Relief Valve Group | 1 |
3j1969 Relief Valve--Tilt
| 3J***69 | Relief Valve Group | 1 |
2j7886 Tank And Valve Group--Front View- Part 1 Of 2
| 2J***86 | Tank And Valve Group | 1 |
2j7886 Tank And Valve Group--End View -Part 2 Of 2
| 2J***86 | Tank And Valve Group | 1 |
2j7886 Tank And Valve Group--Front View -Part 1 Of 2
| 2J***86 | Tank And Valve Group | 1 |
2j7886 Tank And Valve Group--End View- Part 2 Of 2
| 2J***86 | Tank And Valve Group | 1 |
2k3893 Tilt Cylinder Group--R.H.--5.5" X 21.38"
| 2K***93 | Tilt Cylinder Group R H,Tilt Cylinder Group L H | 1 |
Starting System
Battery And Wiring--12 Volt--Side View -Part 1 Of 2
Battery And Wiring--12 Volt--Top View- Part 2 Of 2
Camshaft And Governor
4m4312 Carburetor
| 4M***12 | Carburetor | 1 |
7m4048 Carburetor Assembly
| 7M***48 | Carburetor | 1 |
4m8049 Choke And Throttle Control Group
| 4M***49 | Choke And Throttle Control Group | 1 |
8m1518 Choke And Throttle Control Group
| 8M***18 | Choke And Throttle Control Group | 1 |
4m7429 Choke And Throttle Control Group
| 4M***29 | Choke And Throttle Control Group | 1 |
2m6644 Clutch And Brake Group
| 2M***44 | Clutch And Brake Group | 1 |
2m3701 Clutch And Pinion Control Group
| 2M***01 | Clutch And Pinion Control Group | 1 |
1m53 Clutch, Pinion And Brake Control Group
| 1M***53 | Clutch, Pinion And Brake Control Group | 1 |
Connecting Rod And Piston--2 Required
Crankshaft
Cylinder Block And Covers--Part 2 Of 2
Cylinder Block And Covers--Part 1 Of 2
Cylinder Block And Covers
1s2094 Cylinder Block Assembly--Field Installation
| 1S***94 | Cylinder Block Assembly | 1 |
Cylinder Head And Valve Mechanism
5m1619 Dash Lamp Assembly--12 Volt
| 5M***19 | Dash Lamp Assembly | 1 |
7m7783 Motor Assembly--12 Volt
| 7M***83 | Electric Starter Assembly | 1 |
9h3675 Electric Starter Group--12 Volt
| 9H***75 | Electric Starter Group | 1 |
2m7523 Fuel System Group
| 2M***23 | Fuel System Group | 1 |
2m6494 Generator Assembly--12 Volt, 24 Ampere
| 2M***94 | Generator Assembly | 1 |
4m5340 Ignition System Group
| 4M***40 | Ignition System Group | 1 |
4m4314 Magneto Assembly
| 4M***14 | Magneto Assembly | 1 |
4m8124 Manifold, Carburetor And Air Cleaner Group
| 4M***24 | Manifold, Carburetor And Air Cleaner Group | 1 |
8h1543 Motor Assembly--12 Volt
| 8H***43 | Motor Assembly | 1 |
4m5438 Oil Lines Group
| 4M***38 | Oil Lines Group | 1 |
8m1525 Oil Pump Group
| 8M***25 | Oil Pump Group | 1 |
9h3665 Oil Pump Group
| 9H***65 | Oil Pump Group | 1 |
2m5169 Recoil Starter Assembly
| 2M***69 | Recoil Starter Assembly | 1 |
4m5541 Recoil Starter Group
| 4M***41 | Recoil Starter Group | 1 |
2m6495 Regulator Assembly--12 Volt, 24 Ampere
| 2M***95 | Regulator Assembly | 1 |
1s785 Separate Lubrication Conversion Group--Field Installation
| 1S***85 | Separate Lubrication Conversion Group | 1 |
4m4350 Starter Pinion Group
| 4M***50 | Starter Pinion Group | 1 |
5m1007 Support Group
| 5M***07 | Support Group | 1 |
7h7290 Disconnect Switch Assembly
| 7H***90 | Switch As-Disconnect | 1 |
9h3667 Water Lines Group
| 9H***67 | Water Lines Group | 1 |
Transmission And Chassis
Bevel Gear Case And Covers
Brakes--Part 2 Of 2
Brakes--Part 1 Of 2
Final Drive--Part 1 Of 2
Final Drive--Part 2 Of 2
Floor And Lower Dash Plate
Front Idler--Part 1 Of 2
Front Idler--Part 2 Of 2
Fuel Tank And Seat Support
Gauge And Instrument Panel (2m3712 N/S)
| 2M***12 | Gauge And Instrument Panel | 1 |
1s150 Generator Assembly--12 Volt, 24 Ampere
| 1S***50 | Generator Assembly | 1 |
1m7295 Generator Group--12 Volt, 24 Ampere--Type 1
| 1M***95 | Generator Group | 1 |
1m7295 Generator Group--12 Volt, 24 Ampere--Type 2
| 1M***95 | Generator Group | 1 |
4h4015 Hitch Group
| 4H***15 | Hitch Group | 1 |
Hood And Guard
Main Frame Support
8h8064 Oil Filter Assembly
| 8H***64 | Oil Filter Assembly | 1 |
3k3151 Power Shift Transmission Group--Part 2 Of 2
| 3K***51 | Power Shift Transmission Group | 1 |
3k3151 Power Shift Transmission Group--Part 1 Of 2
| 3K***51 | Power Shift Transmission Group | 1 |
Range Control
3k3226 Range Transmission Group--Part 2 Of 2
| 3K***26 | Range Transmission Group | 1 |
3k3226 Range Transmission Group--Part 1 Of 2
| 3K***26 | Range Transmission Group | 1 |
Recoil Mechanism Guard
5m9660 Relief Valve Group
| 5M***60 | Relief Valve Group | 1 |
4m8811 Relief Valve Group
| 4M***11 | Relief Valve Group | 1 |
1m2003 Track Carrier Roller Group--4 Groups Required
| 1M***03 | Roller Group-Track Carrier; Track Carrier Roller Group | 1 |
3k2488 Scavenge Pump Group
| 3K***88 | Scavenge Pump Group | 1 |
4m7351 Seat Assembly
| 4M***51 | Seat Assembly | 1 |
Seat Cushions
Steering Clutch
Steering Clutch Booster Lubrication System
Steering Clutch Control--Part 2 Of 2
Steering Clutch Control--Part 1 Of 2
Steering Clutch Hydraulic Booster--Top View- Part 2 Of 2
Steering Clutch Hydraulic Booster--Side View- Part 1 Of 2
3k2357 Steering Pump Group
| 3K***57 | Steering Pump Group | 1 |
Torque Converter
1t1 Torque Converter Assembly
| 1T***01 | Torque Converter Assembly | 1 |
Torque Converter Oil Cooler Lines
5m7820 Track Carrier Roller Group--4 Groups Required
| 5M***20 | Track Carrier Roller Group | 1 |
2m9295 Track Group--18" Triple Grouser Shoe--2 Groups Required
| 2M***95 | Track Group | 1 |
7m6809 Track Group--18" Triple Grouser Shoe--2 Groups Required
| 7M***09 | Track Group | 1 |
Track Roller Frame
8h780 Track Roller Group--Single Flange--6 Required--Type 1
| 8H***81 | Track Roller Group | 1 |
8h780 Track Roller Group--Single Flange--6 Groups Required
| 8H***80 | Track Roller Group | 1 |
8h780 Track Roller Group--Single Flange--6 Required--Type 2
| 8H***81 | Track Roller Group | 1 |
Transmission Control
4m7968 Transmission Control Valve Group--Part 1 Of 2
| 4M***68 | Transmission Control Valve Group | 1 |
4m7968 Transmission Control Valve Group--Part 2 Of 2
| 4M***68 | Transmission Control Valve Group | 1 |
3k2022 Transmission Filter Group
| 3K***22 | Transmission Filter Group | 1 |
Transmission Hydraulic Control
3k2584 Transmission Lubrication Regulator Group
| 3K***84 | Transmission Lubrication Regulator Group | 1 |
Transmission Lubrication System
1s99 Transmission Pump Group--Field Installation
| 1S***99 | Transmission Pump Group | 1 |
3k2392 Transmission Pump Group
| 3K***92 | Transmission Pump Group | 1 |
2h8357 Universal Joint Assembly
| 2H***57 | Universal Joint Assembly | 1 |
9s2326 Water Pressure Gauge Group
| 9S***26 | Water Pressure Gauge Group | 1 |
Traxcavator
3k1585 Bucket Assembly--2.5 Cu. Yd.--96" Wide
| 3K***85 | Bucket Assembly | 1 |
Bucket Control
Bucket Positioner
Frame
Kickout
977H serial number reference
Locate the machine ID plate on the outer frame. The prefix consists of the first three alphanumeric characters of the serial number or PIN.
| Prefix | Identifies | Notes |
|---|---|---|
| 53A | 977H | Introduced 1960. Manufacturing location: USA only. Configuration includes a powershift transmission. Steering system transitioned from hand-lever clutches and foot brakes to pedal steering at unit 53A4797 in 1964. Engine is a D333 turbocharged, 6-cylinder diesel rated at approximately 110 kW (150 hp) FWHP. Oil-cooled brakes and steering clutches were added starting at serial number 53A01907 (circa 1961). Multi-shank rear ripper attachments are documented for this generation; shank count varies by dealer package — confirm with dealer. |
Frequently asked questions
What engine is used in the Caterpillar 977H?
The 977H is powered by a D333 turbocharged, six-cylinder diesel engine rated at approximately 110 kW (150 hp).
What is the operating weight of this machine?
The operating weight varies by configuration and serial range; however, the 20A-prefix 977 class is documented at approximately 15,900 kg (34,980 lb).
What model replaced the 977H?
The Caterpillar 977H was succeeded by the Caterpillar 977K.
What 977H owners discuss
What engine is used in the Caterpillar 977H and what is its power output?
The 977H utilizes a D333T turbocharged diesel engine rated at approximately 150 hp (112 kW). This follows earlier production models that used the naturally aspirated D318 or non-turbocharged D333 engines.
What are the common transmission and shifting issues reported for this model?
Operators have reported difficulty engaging gears in both forward and reverse. Potential causes include insufficient transmission pressure, jammed/blocked linkages, or a stuck interlock plunger or shift fork shaft in the range transmission. If the lever pulls back to neutral immediately, check for low oil pressure.
What specific maintenance should be performed on the steering clutch and brakes?
Check the fluid level in the steering clutch booster, which is located under the seat and fuel tank; use a fill pipe/spigot to verify. For older units, ensure the steering clutch and brake band linkage adjustments are inspected every 250 hours. Later models feature oil-cooled brakes and steering clutches.
What fluid specifications should be used for the hydraulic and transmission systems?
For the hydraulic system, a 10 weight motor oil or Cat HYDO-type hydraulic oil is recommended. For the transmission/powertrain, use a 30 weight drive train oil, such as Caterpillar TDTO (or Cat TO4 equivalent).
What are the typical undercarriage and structural wear patterns to monitor?
The loader frame mounts on the hard bar and track frames are identified as a primary weak point; ensure all bolts are present and correct. For the undercarriage, inspect for idler buildup, track pad/sprocket wear, and check that rollers are easy to turn and not loose.
What should be checked when inspecting a used 977H for purchase?
Verify the integrity of the loader frame mounts on the hard bar and track frames. Inspect the engine for intake obstructions like mud dauber nests or rags in the manifold, and check the fuel system for bacterial growth ('snot') or sediment in the tank outlet valves. If the machine has been sitting, drain and sample oil from all compartments to check for water contamination.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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