Caterpillartrack-type loadertrack loader
Caterpillar 941
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar 941 is a track-type loader (Traxcavator) built from 1968 to 1981, powered by the Cat D330, a 4-cylinder naturally aspirated diesel rated at 52 kW (70 hp) flywheel. Operating weight with the standard general-purpose bucket runs about 8.9-9.1 t (19,700-20,000 lb / roughly 10 tons). It replaced the earlier Cat HT4 Traxcavator and was assembled in the USA, at the Caterpillar Mitsubishi plant in Akashi, Japan, and at Caterpillar's Echirolles plant in France. USA- and France-built units used a 3-speed forward/reverse powershift transmission with lever or optional pedal steering; early Japan-built units instead used a direct-drive transmission before switching to powershift. Steering is by multi-disc clutches with hydraulically boosted contracting-band brakes. Rear-frame options included a drawbar and counterweight, a multi-shank ripper, or a towing/recovery winch, fitted one at a time; a heated enclosed cab was offered as a factory option.
Caterpillar updated the line to the 941B in 1971, moving to the larger Cat 3304 engine (about 80 hp) and a bigger standard bucket, and the changeover reached each assembly plant at different times: Japan-built machines picked up a sleeve-metering fuel system and later a sealed-and-lubricated track (SALT) undercarriage as running changes within 941B production, while USA and France plants carried the same serial prefixes across both the 941 and 941B. Production of the original D330-powered 941 ended in the USA and Japan by 1971, with France continuing assembly of the lineage through 1981. In today's used and parts market the 941 sits firmly in vintage-equipment territory: fully mechanical, no ECM or digital diagnostics, with driveline and undercarriage parts commonly cross-referenced against period Cat crawler tractors and loaders of the same power class. Buyers and parts sourcers need to keep the D330-powered 941 and the 3304-powered 941B clearly separated, since engine, bucket, and some fluid data differ between them despite the shared model family name.
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 941 specifications
Identification
| Machine | Caterpillar 941 Traxcavator track-type (crawler) loader |
| Production years | 1968-1981 (introduced 1968 in USA and Japan; France production started 1969) |
| Predecessor | Replaced the Cat HT4 Traxcavator in the track-type loader lineup |
| Series note | Updated to 941B in 1971 with a new engine and larger standard bucket; 941 and 941B are treated together in most dealer literature but carry different engines and ratings - do not blend their figures |
| Build locations | Assembled in the USA, at Caterpillar Mitsubishi in Akashi, Japan, and at the Caterpillar plant in Echirolles, France |
| Name collision warning | A separate, unrelated Caterpillar 941 exists as a forestry wheel harvester (6-cylinder turbo engine, wheeled machine). It shares only the model number and is not the track-type loader covered here |
Engine (941)
| Engine model | Cat D330, 4-cylinder, naturally aspirated diesel |
| Flywheel power | 52 kW (70 hp) |
| Displacement class | Approximately 7.0 L (427 cu in) class four-cylinder |
| Electrical | Electric start standard |
Engine (941B, for reference only)
| Engine model | Cat 3304, 4-cylinder, naturally aspirated diesel (replaced the D330) |
| Flywheel power | About 59.7 kW (80 hp) at 2000 rpm, roughly 10 hp more than the 941's D330 |
| Note | 941B-specific figures are kept separate here and should not be applied to base-model 941 units |
Weights
| Operating weight (941, with GP bucket) | Approximately 8.9-9.1 t (19,700-20,000 lb / about 10 tons); figures vary by source and by attachment fitted |
| Operating weight (941B, for reference) | Approximately 11.3-12.5 t (24,900-27,600 lb); range varies by source |
Dimensions (941)
| Overall length (bucket on ground) | 4.47-4.50 m (14 ft 8 in) |
| Overall width (over tracks) | 1.96-2.13 m (6 ft 5 in to 7 ft); sources disagree, likely reflects standard vs. wide-shoe configuration |
| Overall height (hood/cab top) | 2.74-2.82 m (9 ft to 9 ft 3 in) |
| Track gauge | 1.52 m (60 in) |
| Track shoe width | 330 mm (13 in), triple-grouser shoes |
| Undercarriage layout | 5-roller non-oscillating track frame with one carrier roller, hydraulic track adjustment |
Performance
| Transmission | 3-speed forward/reverse Caterpillar powershift transmission on USA- and France-built units; Japan-built units used a direct-drive transmission |
| Travel speed | Reported figures vary by source, from about 9.2 km/h (5.7 mph) up to a top speed near 11.3 km/h (7 mph); per-gear breakdown not published in available literature |
| Steering | Multi-disc steering clutches with hydraulically boosted, contracting-band brakes; lever steering standard, pedal steering optional |
| Drawbar pull | Not published in available dealer or spec-aggregator sources for this model; check the factory service manual or dealer for data specific to the serial range |
| Ground pressure | Not documented in available public sources for this model; verify against the data plate or factory literature for the specific track shoe width fitted |
| Gradeability | Not documented in available public sources for this model |
Loader / Bucket
| Standard bucket capacity (941) | 0.96 m3 (1.25 cu yd) general-purpose bucket |
| Bucket options (941B, for reference) | 0.76-1.15 m3 (1.0-1.5 cu yd), with 1.15 m3 (1.5 cu yd) as the new standard size |
| Loader linkage | Frame-mounted lift cylinders on each side plus separate cylinders for bucket crowd and dump; small counterweight fitted above a basic drawbar at the rear |
| Cycle times | Not documented for the base 941 in available sources |
Service capacities
| 941 base model | Fuel, hydraulic, cooling, and engine oil capacities are not documented across available public sources for the D330-powered 941; consult the factory service manual or a dealer for confirmed figures |
| 941B (3304 engine, for reference only) | Fuel tank about 151 L (39.9 gal); hydraulic system about 71.9 L (19 gal); cooling system about 24.6 L (6.5 gal); engine oil about 18.9 L (5 gal). Not applicable to the D330-powered 941 |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
941 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | Not documented in sources available for this research. Check the Capacities section of the 941 lubrication and maintenance guide for the exact quart/liter figure — the D330-engine machines and the later 3304-engine machines within the 941 serial range likely differ slightly. | Period Caterpillar diesel engine oil, single-grade, selected by expected ambient temperature per the manual's General Instructions viscosity guidance. Modern equivalent is Cat DEO diesel engine oil. |
| Cooling system | Not documented in sources available for this research — verify against the OMM Capacities chart. | Water plus a Caterpillar-approved permanent-type antifreeze/coolant per the era's spec. Modern equivalent is Cat ELC or a full-strength ethylene-glycol coolant meeting Cat water-quality and inhibitor guidance. The manual calls for periodic system flush and coolant/inhibitor renewal. |
| Fuel tank | Not documented in sources available for this research. | Diesel fuel meeting the OMM's Diesel Fuel specification for the period. Keep the tank full at the end of each shift to limit condensation. |
| Transmission (planetary powershift) | Not documented in sources available for this research. The OMM lists the transmission oil change as its own interval, separate from the bevel gear and steering clutch compartments. | Caterpillar drive-train oil for powershift transmissions — same family as today's Cat TDTO. This single oil specification is shared with the steering clutch and final drive compartments on this machine. |
| Bevel gear compartment (lever steer machines) | Not documented in sources available for this research. | Same Cat powershift/drive-train oil spec as the transmission (TDTO family). Lever-steer machines carry the bevel gear set as a stand-alone compartment, separate from the steering clutches. |
| Bevel gear and steering clutch compartment (pedal steer machines) | Not documented in sources available for this research. | Same Cat powershift/drive-train oil spec (TDTO family). Pedal-steer machines combine bevel gear and steering clutch lubrication in one shared compartment, with its own oil filter and intake screen. |
| Final drives (each side) | Not documented in sources available for this research. | Cat powershift/drive-train oil spec (TDTO family), consistent with the transmission and bevel gear/steering clutch compartments. Confirm grade against the machine's data plate before service, since some period guidance called for a heavier-bodied gear oil in the final drives specifically. |
| Hydraulic system/tank (loader circuit) | Not documented in sources available for this research. | Caterpillar hydraulic oil per the OMM's Hydraulic System section. On machines of this era the hydraulic tank commonly draws from the same drive-train oil family used elsewhere on the machine rather than a dedicated hydraulic-only fluid — confirm before mixing fluids across systems. |
| Pivot shaft | Not applicable to this machine. The 941 OMM index has no separate pivot-shaft lubrication line — that fitting is typical of motor graders, not this track-type loader. | N/A |
| Grease (all chassis fittings) | Not applicable — chassis grease points are serviced by fitting, not by a fill quantity. | Caterpillar Multipurpose grease (lithium-base, NLGI 2), applied at the walk-around inspection points and the periodic grease points listed in the maintenance-interval sections (bucket/ripper linkage and pivots, steering clutch release bearings, track roller frame outer bearings, control shaft and pedal bearings, governor control linkage, bucket positioner). |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar 941 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the 941 beyond the schedule
Predictive maintenance & fluid analysis
The D330 has no ECM, so wear trends have to come from oil sampling and visual inspection rather than fault codes. Pull periodic samples from the engine crankcase and from the shared TDTO-family oil that lubricates the transmission, bevel gear/steering clutch compartment, and final drives — rising metal counts in one compartment can point to steering clutch or final drive wear before it surfaces as a leak or slip. Check coolant condition and inhibitor strength at the same intervals, and watch track roller and idler wear as an early indicator of undercarriage rebuild timing.
Corrective & common repairs
Common issues on the 941 center on the steering system and hydraulics. Contracting-band brakes and multi-disc steering clutches glaze or wear unevenly with age, showing up as pull-to-one-side or soft braking; adjust or reline before it worsens. The single vane-type hydraulic pump feeding the loader circuit loses output as it wears, slowing lift and crowd response. On the D330 itself, injector and injection pump wear is the usual culprit behind hard starting or lost power. Track pin and bushing wear on the 5-roller non-oscillating frame is routine on a machine this age.
Overhaul & rebuild points
Plan major work around the steering clutch packs, final drives, and undercarriage first — these carry the highest wear load on a powershift or direct-drive 941 working in loader duty. Rebuild steering clutch discs and springs as matched sets rather than piecemeal. Final drive gear and bearing wear should be inspected side to side, since load is rarely even. The D330's top end (head, valves, injectors) is the next milestone item, and the hydraulic pump and loader cylinders eventually need reseal or replacement once internal leakage shows up as slow lift or drift.
Seasonal & environment servicing
Cold-climate operation calls for matching engine oil viscosity to ambient temperature per the OMM's General Instructions and keeping coolant inhibitor concentration correct, since the D330 has no glow-plug or ECM-managed cold-start assist. In hot or dusty conditions, step up air cleaner and radiator core cleaning to protect the naturally aspirated engine's airflow, and check the hydraulic track adjuster and grease points more often when working in abrasive material — the 5-roller undercarriage and steering clutch release bearings take the brunt of dust and loose-material ingress.
941 common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 5S-9665 | Fuel Filter | Fuel system service | Check fitment → |
| 2P-7714 | Fuel Filter | Fuel system service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
941 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Ammeter - discharge reading | Charging circuit not delivering current to the battery | Worn or loose generator/alternator drive belt, faulty voltage regulator, corroded battery cables, or a fault in the wiring between the starter battery post and the 40-amp circuit breaker | Check belt tension, inspect battery cable and breaker connections, then test generator/regulator output before replacing components |
| Ammeter - no needle movement on Heat or Start | No current reaching the starting circuit | Faulty battery cables, a bad connection at the dash 40-amp breaker, a failed battery disconnect switch, or a worn heat/start switch | Trace the circuit from the starter battery post through the breaker and heat/start switch, checking continuity at each connector before condemning the switch |
| Water temperature gauge - reading in the red/high range | Engine coolant temperature above normal operating range | Low coolant level, blocked radiator core, slipping or broken fan belt, or a stuck thermostat | Shut the engine down, let it cool, check coolant level and fan belt condition, then inspect the radiator core and thermostat before restarting |
| Oil pressure gauge - low or zero reading | Insufficient engine lubrication pressure | Low engine oil level, worn oil pump, clogged oil filter, or a faulty pressure sending unit/gauge | Stop the engine immediately, check oil level, inspect the filter, and verify the sending unit before restarting |
| Panel indicator lamp illuminated (oil pressure or coolant temp sender lamp) | Sender-actuated warning lamp signaling an out-of-range oil pressure or coolant temperature condition, wired independently of the analog gauge | Genuine low pressure or high temperature condition, or a faulty sender switch/lamp circuit | Cross-check against the corresponding gauge reading and verify the sender and wiring before dismissing the lamp as a false alarm |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
941 attachments & work tools
Blades
No factory S, SU, A, or VPAT dozer blade is documented for the 941. It is a dedicated track-type loader chassis built around GP and multi-purpose buckets, not a blade-equipped tractor; treat any blade fitment on this chassis as non-standard/aftermarket and verify before quoting.
Rippers
A multi-shank ripper sharing D4-class mounting and drivetrain fits the rear of the 941, direct-bolt with an added control valve, for general shank-class ripping in the 941's power class. A single straight, non-recessed ripper shank (same family used on D3/D4 dozers and 12E/14E graders) is also documented for lighter single-shank duty on this loader.
Winches
A Hyster-built towing/recovery winch is the documented rear-mount option, fitted directly to the back of the machine with the addition of the appropriate control valve. It occupies the same rear-frame position as the drawbar/counterweight and ripper, so only one of the three is fitted at a time.
Drawbars/counterweights
Standard rear fitment is a rudimentary drawbar with a small counterweight mounted above it. Both are removable as a unit to free the rear frame for a ripper or winch, so drawbar, ripper, and winch are mutually exclusive rear attachments rather than stackable options.
Cab/ROPS guarding
Later production (941B) carries integral ROPS mounting pads from the factory; earlier 941 units need an aftermarket ROPS kit with added frame reinforcement to meet the same protection level. A heated enclosed cab was offered as a factory option; no dedicated forestry or waste-handling guard package (screens, belly guards) is documented for this vintage line, so operators typically added aftermarket screening for log or waste work.
Hydraulic arrangement notes
A single vane-type pump supplies roughly 105-106 L/min (28 gpm) at about 2500 psi relief, feeding the front loader linkage as the primary circuit. Rear tools (winch, and by extension ripper) tap this same system through an added control valve rather than a separate dedicated pump, so front-loader and rear-tool operation share hydraulic capacity.
All 941 assemblies by section
Every catalogued assembly group for the Caterpillar 941. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Central Structure
5s6425 Balancer Group
| 5S***25 | Balancer Group; Balancer Group | 1 |
2p6201 Camshaft Group
| 2P***01 | Camshaft Group-Single; Single Camshaft Group | 1 |
5s6429 Connecting Rod And Piston Group
| 5S***29 | Connecting Rod And Piston; Connecting Rod And Piston Group | 1 |
6a6610 Cylinder Block Cover Group
| 6A***10 | Cover Group-Cylinder Block; Cylinder Block Cover Group | 1 |
Cylinder Block Cover (6a6610 N/S)
| 6A***10 | Cover Group-Cylinder Block; Cylinder Block Cover Group | 1 |
2p1686 Crankshaft Assembly--Field Installation
| 2P***86 | Crankshaft Assembly | 1 |
Crankshaft Bearing Replacement Groups
Crankshaft (2p6216 N/S)
| 2P***16 | Crankshaft Group | 1 |
6a6669 Cylinder Block Assembly
| 6A***69 | Cylinder Block As | 1 |
6a6609 Cylinder Block Cover Group
| 6A***09 | Cylinder Block Cover | 1 |
Cylinder Block Cover (6a6609 N/S)
| 6A***09 | Cylinder Block Cover | 1 |
6a3834 Cylinder Block Group
| 6A***34 | Cylinder Block Group; Cylinder Block Group | 1 |
9s8912 Connecting Rod And Piston Group
| 9S***12 | Piston & Rod Group; Connecting Rod And Piston Group | 1 |
4n4028 Connecting Rod And Piston Group
| 4N***28 | Piston & Rod Group; Connecting Rod And Piston Group | 1 |
2p6225 Crankshaft Seal Group
| 2P***25 | Seal Group-Crankshaft; Crankshaft Seal Group | 1 |
2p6223 Crankshaft Seal Group
| 2P***23 | Seal Group-Crankshaft; Crankshaft Seal Group | 1 |
Cooling System
2p6215 Engine Oil Cooler Group
| 2P***15 | Cooler Group-Engine Oil; Oil Cooler Group Engine | 1 |
2p6508 Transmission Oil Cooler Group
| 2P***08 | Cooler Group-Transmission Oil; Transmission Oil Cooler Group | 1 |
2p8167 Housing And Regulator Group
| 2P***67 | Housing & Regulator Group; Regulator And Housing Group | 1 |
2p8164 Housing And Regulator Group
| 2P***64 | Housing & Regulator Group; Regulator And Housing Group | 1 |
2p8165 Housing And Regulator Group
| 2P***65 | Housing & Regulator Group; Housing And Regulator Group | 1 |
2p8169 Housing And Regulator Group
| 2P***69 | Housing & Regulator Group; Housing And Regulator Group | 1 |
3n3271 Housing And Regulator Group
| 3N***71 | Housing & Regulator Group; Housing And Regulator Group | 1 |
2p8163 Housing And Regulator Group
| 2P***63 | Housing & Regulator Group; Housing And Regulator Group | 1 |
2p7740 Water Elbow Lines Group
| 2P***40 | Lines Group-Water; Water Lines Group--Elbow | 1 |
2p7741 Water Pipe Lines Group
| 2P***41 | Lines Group-Water; Water Lines Group-- Pipe | 1 |
2p6188 Water Lines
| 2P***88 | Lines Group-Water; Water Lines Group | 1 |
2p662 Water Pump
| 2P***62 | Pump Group-Water; Water Pump Group | 1 |
2p661 Water Pump
| 2P***61 | Pump Group-Water; Water Pump Group | 1 |
Engine Arrangement
5c785 Basic Engine Arrangement
| 2P***49 | Pipe Group-Exhaust; Exhaust Pipe Group | 0 |
| 2P***05 | Pulley Group; Pulley Group | 0 |
| 4N***79 | Exhaust Pipe Group | 0 |
5c790 Basic Engine Arrangement
| 2P***49 | Pipe Group-Exhaust; Exhaust Pipe Group | 0 |
| 2P***05 | Pulley Group; Pulley Group | 0 |
| 4N***79 | Exhaust Pipe Group | 1 |
Engine Arrangements
Front Structure
2p6529 Front Housing Cover Group
| 2P***29 | Cover Group-Front Housing; Front Housing Cover Group | 1 |
4n6508 Front Housing Cover Group
| 4N***08 | Cover Group-Front Housing; Front Housing Cover Group | 1 |
2p6528 Front Housing Cover Group
| 2P***28 | Cover Group-Front Housing; Front Housing Cover Group | 1 |
2p7831 Fan Drive Group
| 2P***31 | Drive Group-Fan; Fan Drive Group | 1 |
Fan Drive (4n8537 N/S)
| 4N***37 | Drive Group-Fan; Fan Drive Group | 1 |
6a7389 Fan Drive Group
| 6A***89 | Fan Drive Group | 1 |
Fan Drive (6a7389 N/S)
| 6A***89 | Fan Drive Group | 1 |
2p6498 Front Housing Fastener Group
| 2P***98 | Fastener Group-Front Housing; Front Housing Fastener Group | 1 |
2p6498 Front Housing Fasteners Group
| 2P***98 | Fastener Group-Front Housing; Front Housing Fastener Group | 1 |
2p6211 Front Gear Group--Timing
| 2P***11 | Front Gear Group; Front Gear Group-Timing | 1 |
2p6153 Front Housing Group
| 2P***53 | Front Housing; Front Housing Group | 1 |
2p9642 Front Timing Gear Group
| 2P***42 | Gear Group-Front Timing | 1 |
2p9642 Front Gear Group--Timing
| 2P***42 | Gear Group-Front Timing | 1 |
2p9641 Front Housing Group
| 2P***41 | Housing Group-Front; Front Housing Group | 1 |
2p8598 Crankshaft Hub Group
| 2P***98 | Hub Group-Crankshaft; Crankshaft Hub Group | 1 |
4n8281 Pulley Group--Type 1
| 4N***81 | Pulley Group; Pulley Group | 1 |
6a6620 Pulley Group
| 6A***20 | Pulley Group | 1 |
6a6621 Pulley Group
| 6A***21 | Pulley Group | 1 |
Pulley (6a5562 N/S)
| 6A***62 | Pulley Group | 1 |
6a4274 Pulley Group
| 6A***74 | Pulley Group | 1 |
Pulley (2p8605 N/S)
| 2P***05 | Pulley Group; Pulley Group | 1 |
Pulley (2p8610 N/S)
| 2P***10 | Pulley Group | 1 |
4n8281 Pulley Group--Type 2
| 4N***81 | Pulley Group; Pulley Group | 1 |
5c1987 Pulley Group
| 5C***87 | Pulley Group | 1 |
Pulley (4n3562 N/S)
| 4N***62 | Pulley Group-Crankshaft; Crankshaft Pulley Group | 1 |
2p7757 Support Group
| 2P***57 | Support Group | 1 |
5c2678 Support Group
| 5C***78 | Support Group | 1 |
2p7755 Support Group
| 2P***55 | Support Group-Engine | 1 |
4n5239 Support Group
| 4N***39 | Support Group-Engine; Engine Support Group | 1 |
2p7753 Support Group
| 2P***53 | Support Group-Engine; Front Engine Support Group | 1 |
2p6246 Trunnion Group
| 2P***46 | Trunnion Group-Engine | 1 |
Fuel System And Governor
9n867 Fuel Ratio Control Group
| 9N***67 | Control Group-Fuel Ratio | 1 |
6n2505 Torque Control Group
| 6N***05 | Control Group-Torque | 1 |
4n4510 Governor Cover Group
| 4N***10 | Cover Group-Governor; Governor Cover Group | 1 |
6n4413 Tachometer Drive Group
| 6N***13 | Drive Group-Tachometer; Tachometer Drive Group | 1 |
4n3303 Fuel Filter Group
| 4N***03 | Filter Group-Fuel; Fuel Filter Group | 1 |
2p975 Fuel Filter Group
| 2P***75 | Filter Group-Fuel; Fuel Filter Group | 1 |
Primary Fuel Filter (1p6835 N/S)
| 1P***35 | Filter Group-Primary Fuel; Primary Fuel Filter Group | 1 |
5s9665 Fuel Filter Group
| 5S***65 | Fuel Filter | 1 |
Fuel Filter (2p7714 N/S)
| 2P***14 | Fuel Filter | 1 |
6n5916 Fuel Filter Group
| 6N***16 | Fuel Filter Group | 1 |
Fuel Filter (5s9666 N/S)
| 5S***66 | Fuel Filter Group | 1 |
Fuel Injection Lines (2p7461 N/S)
| 2P***61 | Fuel Injection Lines; Fuel Injection Lines Group | 1 |
Fuel Injection Lines (2p7460 N/S)
| 2P***60 | Fuel Injection Lines | 1 |
4n3374 Fuel Injection Lines Group
| 4N***74 | Fuel Injection Lines Group | 1 |
6n728 Fuel Injection Lines Group
| 6N***28 | Fuel Injection Lines Group | 1 |
Fuel Injection Lines (6n727 N/S)
| 6N***27 | Fuel Injection Lines Group | 1 |
3n3387 Fuel Injection Pump Group
| 3N***87 | Fuel Injection Pump Group | 1 |
4n4882 Fuel Injection Lines Group--Part 2 Of 2
| 4N***82 | Fuel Injection Valves And Lines Group | 1 |
4n4882 Fuel Injection Lines Group--Part 2
| 4N***82 | Fuel Injection Valves And Lines Group | 1 |
4n4882 Fuel Injection Lines Group--Part 1 Of 2
| 4N***82 | Fuel Injection Valves And Lines Group | 1 |
5s2100 Fuel Priming Pump Group
| 5S***00 | Fuel Priming Pump | 1 |
Fuel Priming Pump (7s1251 N/S)
| 7S***51 | Fuel Priming Pump Group | 1 |
Fuel Priming Pump (2p7716 N/S)
| 2P***16 | Fuel Priming Pump Group | 1 |
Governor And Fuel Injection Pump (7s9334 N/S)
| 7S***34 | Fuel Pump Housing And Governor | 1 |
Governor And Fuel Injection Pump (8s727 N/S)
| 8S***27 | Fuel Pump Housing And Governor | 1 |
Governor And Fuel Injection Pump (8s728 N/S)
| 8S***28 | Fuel Pump Housing And Governor | 1 |
Governor And Fuel Injection Pump (7s5859 N/S)
| 7S***59 | Fuel Pump Housing And Governor | 1 |
Governor And Fuel Injection Pump (8s720 N/S)
| 8S***20 | Fuel Pump Housing And Governor; Governor And Fuel Injection Pump | 1 |
7s8831 Fuel Pump Housing Group
| 7S***31 | Fuel Pump Housing Group | 1 |
4n4900 Fuel Ratio Control Group
| 4N***00 | Fuel Ratio Control Group | 1 |
7s4430 Fuel Transfer Pump Group
| 7S***30 | Fuel Transfer Pump Group | 1 |
4n4873 Fuel Transfer Pump Group (7s5108 N/S)
| 4N***73 | Fuel Transfer Pump Group | 1 |
7s5445 Fuel Transfer Pump Group (7s5108 N/S)
| 7S***45 | Fuel Transfer Pump Group | 1 |
Glow Plug (5s8500 N/S)
| 5S***00 | Glow Plug Group; Glow Plug Group | 1 |
4n6115 Governor And Fuel Injection Pump Group
| 4N***15 | Gov & Fuel Inj Pump Group; Governor And Fuel Injection Pump Group | 1 |
6n5356 Governor And Fuel Injection Pump Group--Part 3 Of 4
| 6N***56 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 1 Of 4
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
6n5356 Governor And Fuel Injection Pump Group--Part 1 Of 4
| 6N***56 | Gov & Fuel Inj Pump Group | 1 |
6n277 Governor And Fuel Injection Pump Group
| 6N***77 | Gov & Fuel Inj Pump Group; Governor And Fuel Injection Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 3 Of 4
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 2 Of 4
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
6n281 Governor And Fuel Injection Pump Group
| 6N***81 | Gov & Fuel Inj Pump Group; Governor And Fuel Injection Pump Group | 1 |
6n243 Governor And Fuel Injection Pump Group
| 6N***43 | Gov & Fuel Inj Pump Group | 1 |
6n247 Governor And Fuel Injection Pump Group--Type 1
| 6N***47 | Gov & Fuel Inj Pump Group | 1 |
6n284 Governor And Fuel Injection Pump Group--Replaced By 6n2476 Shown
| 6N***84 | Gov & Fuel Inj Pump Group | 1 |
6n5356 Governor And Fuel Injection Pump Group--Part 4 Of 4
| 6N***56 | Gov & Fuel Inj Pump Group | 1 |
6n279 Governor And Fuel Injection Pump Group
| 6N***79 | Gov & Fuel Inj Pump Group | 1 |
4n6116 Governor And Fuel Injection Pump Group--Field Installation
| 1P***36 | Gasket; (Fuel Priming Pump)(Fuel Priming Pump) | 1 |
| 1P***53 | Stop Bar .250" (6.35 mm) Thick | 1 |
| 2H***34 | Seal Transfer Pump To Plate | 1 |
6n5356 Governor And Fuel Injection Pump Group--Part 2 Of 4
| 6N***56 | Gov & Fuel Inj Pump Group | 1 |
6n247 Governor And Fuel Injection Pump Group--Type 2
| 6N***47 | Gov & Fuel Inj Pump Group | 1 |
4n1834 Governor And Fuel Injection Pump Group--Part 4 Of 4
| 4N***34 | Gov & Fuel Inj Pump Group | 1 |
6n282 Governor And Fuel Injection Pump Group--Replaced By 6n2476 Shown
| 6N***82 | Governor And Fuel Injection Pump Group | 1 |
6n282 Governor And Fuel Injection Pump Group
| 6N***82 | Governor And Fuel Injection Pump Group | 1 |
6n283 Governor And Fuel Injection Pump Group
| 6N***83 | Governor And Fuel Injection Pump Group | 1 |
6n274 Governor And Fuel Injection Pump Group--Replaced By 6n2476 Shown
| 6N***74 | Governor And Fuel Injection Pump Group | 1 |
6n244 Governor And Fuel Injection Pump Group--Type 1
| 6N***44 | Governor And Fuel Injection Pump Group | 1 |
6n2477 Governor And Fuel Injection Pump Group
| 6N***77 | Governor And Fuel Injection Pump Group | 1 |
Governor And Fuel Injection Pump Group (6n249 N/S)
| 6N***49 | Governor And Fuel Injection Pump Group | 1 |
6n244 Governor And Fuel Injection Pump Group--Type 2
| 6N***44 | Governor And Fuel Injection Pump Group | 1 |
6n286 Governor And Fuel Injection Pump Group
| 6N***86 | Governor And Fuel Injection Pump Group | 1 |
6n275 Governor And Fuel Injection Pump Group--Replaced By 6n2476 Listed
| 6N***75 | Governor And Fuel Injection Pump Group | 1 |
6n2476 Governor And Fuel Injection Pump Group--Replaced By 4n6116
| 1P***36 | Gasket; (Fuel Priming Pump)(Fuel Priming Pump) | 1 |
| 1P***53 | Stop Bar .250" (6.35 mm) Thick | 1 |
| 2H***34 | Seal Transfer Pump To Plate | 1 |
7s9332 Governor Group--Part 2 Of 2--Type 1
| 7S***32 | Governor Group | 1 |
7s9333 Governor Group--Part 2 Of 2--Type 3
| 7S***33 | Governor Group | 1 |
7s9333 Governor Group--Type 2
| 7S***33 | Governor Group | 1 |
7s9333 Governor Group--Part 1 Of 2--Type 3
| 7S***33 | Governor Group | 1 |
7s9332 Governor Group--Part 2 Of 2--Type 2
| 7S***32 | Governor Group | 1 |
7s9332 Governor Group--Part 1 Of 2--Type 2
| 7S***32 | Governor Group | 1 |
7s9333 Governor Group--Type 1
| 7S***33 | Governor Group | 1 |
7s9332 Governor Group--Part 1 Of 2--Type 1
| 7S***32 | Governor Group | 1 |
Torque Control (8s6099 N/S)
| 8S***99 | Governor Torque Spring | 1 |
Torque Control (8s5549 N/S)
| 8S***49 | Governor Torque Spring | 1 |
Governor And Fuel Injection Pump (7s5858 N/S)
| 7S***58 | Injection Pump & Gov Group; Governor And Fuel Injection Pump Group | 1 |
9h2256 Fuel Priming Pump Assembly
| 9H***56 | Pump Assembly | 1 |
4n3287 Fuel Priming Pump Group
| 4N***87 | Pump Group-Fuel Priming; Pump Group-Fuel Priming | 1 |
Fuel Priming Pump (4n4314 N/S)
| 4N***14 | Pump Group-Fuel Priming; Fuel Priming Pump Group | 1 |
4n4864 Fuel Transfer Pump Group--Type 1
| 4N***64 | Pump Group-Fuel Transfer | 1 |
7s4429 Fuel Transfer Pump Group
| 7S***29 | Pump Group-Fuel Transfer; Fuel Transfer Pump Group | 1 |
4n4864 Fuel Transfer Pump Group--Type 2
| 4N***64 | Pump Group-Fuel Transfer | 1 |
Torque Control (9s3312 N/S)
| 9S***12 | Rack Stop Group | 1 |
Service Meter (9s7993 N/S)
| 9S***93 | Service Meter | 1 |
Service Meter (9s5141 N/S)
| 9S***41 | Service Meter | 1 |
Service Meter (9s8923 N/S)
| 9S***23 | Service Meter | 1 |
Service Meter Drive (2p6158 N/S)
| 2P***58 | Service Meter Drive | 1 |
Service Meter (2p6478 N/S)
| 2P***78 | Service Meter Group | 1 |
6n581 Torque Control Group
| 6N***81 | Torque Control Group | 1 |
Torque Control (6n509 N/S)
| 6N***09 | Torque Control Group | 1 |
Torque Control (9s3423 N/S)
| 9S***23 | Torque Spring Group | 1 |
Gasket Kits
Gasket Kits
| 5P***68 | Kit-Gasket; (Single Cylinder Liner)(Single Cylinder Liner) | 0 |
| 5P***71 | Water Pump- Serial No. 78p34523 To 78p40899 Inclusive | 0 |
| 5P***02 | 8n***60, 8n***61, 8n***15, 8n***16; 1w***78, 1w***79, 1w***86, 1w***87 | 0 |
Intake And Exhaust System
Accessory Drive (2p7705 N/S)
| 2P***05 | Accessory Drive | 1 |
Accessory Drive (2p7712 N/S)
| 2P***12 | Accessory Drive | 1 |
Air Compressor (2p7795 N/S)
| 2P***95 | Air Compressor Group; Air Compressor Group | 1 |
Air Compressor (2p8712 N/S)
| 2P***12 | Air Compressor Group; Air Compressor Group | 1 |
2p8711 Air Compressor Group
| 2P***11 | Air Compressor Group | 1 |
2p8709 Air Compressor Group
| 2P***09 | Air Compressor Group | 1 |
Air Compressor (2p8710 N/S)
| 2P***10 | Air Compressor Group; Air Compressor Group | 1 |
2p7794 Air Compressor Group
| 2P***94 | Air Compressor Group | 1 |
2p6837 Air Lines Group
| 2P***37 | Air Lines Group | 1 |
4n8279 Exhaust Pipe Group
| 4N***79 | Exhaust Pipe Group | 1 |
2p6533 Exhaust Manifold Fastener Group
| 2P***33 | Fastener Group-Exhaust Manifold; Exhaust Manifold Fastener Group | 1 |
4n9585 Exhaust Manifold Fastener Group
| 4N***85 | Fastener Group-Exhaust Manifold; Exhaust Manifold Fastener Group | 1 |
4n9584 Exhaust Manifold Fastener Group
| 4N***84 | Fastener Group-Exhaust Manifold; Exhaust Manifold Fastener Group | 1 |
Air Lines (2p6843 N/S)
| 2P***43 | Lines Group-Air; Air Lines Group | 1 |
Air Lines (2p6839 N/S)
| 2P***39 | Lines Group-Air; Air Lines Group | 1 |
6a7457 Air Lines Group
| 6A***57 | Lines Group-Air; Air Lines Group | 1 |
4n4794 Air Lines Group
| 4N***94 | Lines Group-Air; Air Lines Group | 1 |
2p6840 Air Lines Group
| 2P***40 | Lines Group-Air; Air Lines Group | 1 |
Air Lines (6a7457 N/S)
| 6A***57 | Lines Group-Air; Air Lines Group | 1 |
2p7796 Air Compressor Lines Group
| 2P***96 | Lines Group-Air Compressor; Air Compressor Lines Group | 1 |
4n3923 Turbocharger Oil Lines Group
| 4N***23 | Lines Group-Turbocharger Oil; Turbocharger Oil Lines Group | 1 |
4n3924 Turbocharger Oil Lines Group
| 4N***24 | Lines Group-Turbocharger Oil; Turbocharger Oil Lines Group | 1 |
Exhaust Manifold (2p6570 N/S)
| 2P***70 | Manifold Group-Exhaust; Exhaust Manifold Group | 1 |
Exhaust Manifold (2p6571 N/S)
| 2P***71 | Manifold Group-Exhaust; Exhaust Manifold Group | 1 |
2p7349 Exhaust Pipe Group
| 2P***49 | Pipe Group-Exhaust; Exhaust Pipe Group | 1 |
3p138 Exhaust Pipe Group
| 3P***38 | Pipe Group-Exhaust; Exhaust Pipe Group | 1 |
4n8737 Exhaust Pipe Group
| 4N***37 | Pipe Group-Exhaust; Exhaust Pipe Group | 1 |
1p9136 Turbocharger Group (1p9137 N/S)
| 1P***36 | Turbocharger Group | 1 |
4n6856 Turbocharger Group
| 4N***56 | Turbocharger Group; Turbocharger Group | 1 |
1p34 Turbocharger Group (1p8533 N/S)
| 1P***34 | Turbocharger Group | 1 |
4n6858 Turbocharger Group
| 4N***58 | Turbocharger Group | 1 |
4n6859 Turbocharger Group
| 4N***59 | Turbocharger Group | 1 |
4n6857 Turbocharger Group
| 4N***57 | Turbocharger Group; Turbocharger Group | 1 |
Turbocharger Oil Lines (2p7353 N/S)
| 2P***53 | Turbocharger Oil Lines Group | 1 |
Turbocharger Oil Lines (2p7430 N/S)
| 2P***30 | Turbocharger Oil Lines Group | 1 |
Lower Structure
2p6189 Oil Pan Fastener Group
| 2P***89 | Fastener Group-Oil Pan; Oil Pan Fastener Group | 1 |
2p6186 Oil Pan Fastener Group
| 2P***86 | Fastener Group-Oil Pan; Oil Pan Fastener Group | 1 |
2p6494 Oil Level Gauge Group
| 2P***94 | Gauge Group-Oil Level (Dipstick); Oil Lever Gauge Group | 1 |
2p990 Oil Level Gauge Group
| 2P***90 | Gauge Group-Oil Level (Dipstick) | 1 |
2p6491 Oil Level Gauge Group
| 2P***91 | Gauge Group-Oil Level (Dipstick) | 1 |
Oil Pan (2p6155 N/S)
| 2P***55 | Pan Group-Oil; Oil Pan Group | 1 |
2p6175 Oil Pan Group
| 2P***75 | Pan Group-Oil; Pan Gp-Engine Oil | 1 |
Lubrication System
Breather (1p4244 N/S)
| 1P***44 | Breather Group | 1 |
4n9821 Oil Filler Group
| 4N***21 | Filler Group-Oil; Oil Filler Group | 1 |
2p6855 Oil Filler Group
| 2P***55 | Filler Group-Oil | 1 |
4n4817 Oil Filler Group
| 4N***17 | Filler Group-Oil; Oil Filler Group | 1 |
2p6475 Oil Filter Group
| 2P***75 | Filter Group-Engine Oil; Oil Filter Group (10z1 ~ 10z7023) | 1 |
2p6525 Oil Filter Group
| 2P***25 | Filter Group-Oil | 1 |
Fumes Disposal (2p7446 N/S)
| 2P***46 | Fumes Disposal | 1 |
4n3325 Fumes Disposal Group
| 4N***25 | Fumes Disposal Group; Fumes Disposal Group | 1 |
3n3392 Fumes Disposal Group
| 3N***92 | Fumes Disposal Group; Fumes Disposal Group | 1 |
2p7447 Fumes Disposal Group
| 2P***47 | Fumes Disposal Group | 1 |
2p6513 Oil Lines Group
| 2P***13 | Lines Group-Engine Oil; Engine Oil Lines Group | 1 |
2p6512 Oil Lines Group
| 2P***12 | Lines Group-Engine Oil; Engine Oil Lines Group | 1 |
2p6857 Oil Filler Group
| 2P***57 | Oil Filler Group | 1 |
Oil Filler (2p6857 N/S)
| 2P***57 | Oil Filler Group | 1 |
2p1784 Oil Pump Group
| 2P***84 | Pump Group-Engine Oil; Engine Oil Pump Group | 1 |
2p1785 Oil Pump Group
| 2P***85 | Pump Group-Engine Oil | 1 |
Rear Structure
Flywheel (7s7877 N/S)
| 7S***77 | Flywheel Group; Flywheel Group | 1 |
Flywheel (7s7878 N/S)
| 7S***78 | Flywheel Group; Flywheel Group | 1 |
7s7753 Flywheel Group
| 7S***53 | Flywheel Group; Flywheel Group | 1 |
Flywheel (2p976 N/S)
| 2P***76 | Flywheel Group; Flywheel Group | 1 |
Flywheel Housing (5c3176 N/S)
| 5C***76 | Flywheel Housing | 1 |
5c3176 Flywheel Housing Group
| 5C***76 | Flywheel Housing | 1 |
5c3193 Flywheel Housing Group
| 5C***93 | Flywheel Housing Group | 1 |
2p6813 Flywheel Housing Group
| 2P***13 | Flywheel Housing Group | 1 |
Flywheel Housing (2p6166 N/S)
| 2P***66 | Housing Group-Flywheel; Flywheel Housing Group | 1 |
2p6119 Flywheel Housing Group
| 2P***19 | Housing Group-Flywheel; Flywheel Housing Group | 1 |
2p6166 Flywheel Housing Group
| 2P***66 | Housing Group-Flywheel; Flywheel Housing Group | 1 |
2p6119 Flywheel Housing Group--Type 2
| 2P***19 | Housing Group-Flywheel; Flywheel Housing Group | 1 |
2p6119 Flywheel Housing Group--Type 1
| 2P***19 | Housing Group-Flywheel; Flywheel Housing Group | 1 |
Upper Structure
Valve Mechanism Cover (2p6514 N/S)
| 2P***14 | Cover Group-Valve Mechanism; Valve Mechansim Cover Group | 1 |
4n7444 Cylinder Head Assembly
| 4N***44 | Cylinder Head Assembly | 1 |
2p6274 Cylinder Head Group
| 2P***74 | Cylinder Head Group; Cylinder Head Group | 1 |
2p6484 Cylinder Head Group
| 2P***84 | Cylinder Head Group; Cylinder Head Group | 1 |
Cylinder Head Fastener (2p6544 N/S)
| 2P***44 | Fastener Group-Cylinder Head; Cylinder Head Fastener Group | 1 |
1p3840 Lifting Eye Group
| 1P***40 | Lifting Group; Lifting Eye Group | 1 |
Valve Mechanism (2p6524 N/S)
| 2P***24 | Valve-Mechanism Group; Valve Mechanism Group | 1 |
941 serial number reference
The PIN/serial plate on the 941 and 941B sits on the rear face of the transmission case (sometimes hidden behind a ripper mount if fitted), on the rear face of the dash plate in the operator's compartment, or stamped on the left side of the engine block; a duplicate is often stamped into the loader frame arm near the main pin or on the track-frame adjuster bar. The prefix is the leading letters-and-digits group (e.g. 80H, 70H, 16U) identifying the production plant; the digits following it are the sequential unit number, and on each plant's prefix the 941-to-941B changeover falls at a specific serial number rather than a prefix change (e.g. 80H3040 and up is 941B on the USA line).
| Prefix | Identifies | Notes |
|---|---|---|
| 80H | 941 and 941B, USA-built | USA-manufactured plant prefix, used for both the original 941 (1968-1971, D330 engine, powershift) and the 941B (1971-1980, 3304 engine, powershift, roughly 80 flywheel hp). Caterpillar carried the 80H prefix over unchanged at the 941-to-941B changeover; American 941B units start around serial 80H3040. Std configuration only documented; no separate XL/LGP/XW code found tied to this prefix. |
| 70H | 941 and 941B, France-built | French assembly plant prefix (Echirolles facility), covering both 941 (from 1969) and 941B, running through the end of French production in 1981. Powershift transmission, D330-family engine on the original 941, 3304 on the 941B. A sleeve-metering fuel system change is noted starting around serial 70H04094 (1973-1974), and a sealed-and-lubricated track (SALT) undercarriage change starting around serial 70H04414 (1974-1978). |
| 16U | 941 and 941B, Japan-built | Japanese production prefix (Caterpillar Mitsubishi, Akashi plant), covering both the original 941 and the 941B, same shared-prefix pattern as 80H (USA) and 70H (France) rather than a 941B-only code. Powershift transmission (an upgrade over the earlier Japanese direct-drive option). A sleeve-metering fuel system change is noted starting around serial 16U00296 (1973-1974), and a sealed-and-lubricated track (SALT) undercarriage change starting around serial 16U00423 (1974-1978). |
Frequently asked questions
What engine does the Caterpillar 941 use?
The 941 is powered by the Cat D330, a 4-cylinder naturally aspirated diesel rated at 52 kW (70 hp) flywheel. The 941B successor that followed in 1971 switched to the larger Cat 3304 engine at roughly 80 hp — the two should not be confused.
What is the operating weight of the Caterpillar 941?
With the standard general-purpose bucket, the 941 weighs approximately 8.9-9.1 t (19,700-20,000 lb, roughly 10 tons). Exact figures vary by source and by the attachment fitted.
What replaced the Caterpillar 941?
The Cat 941B, produced from 1971 to 1980, replaced the original 941. It carried a larger Cat 3304 engine at about 80 hp and a bigger standard bucket than the D330-powered 941 it succeeded.
What 941 owners discuss
Is my 941 running a D330 or a 3304 engine, and does it matter for parts?
Early 941 units (16U and early 70H prefixes) carry the D330 or D330C. From roughly S/N 80H3884 onward the block was updated toward the 3304-series casting, and the two look nearly identical from the outside, which causes real confusion when sourcing parts. Owners have pulled valve covers and injection pump housings to confirm which family they actually have rather than trust the casual eyeball ID. Before ordering major engine parts, confirm the block casting and serial break for your specific unit; a D330-tagged part will not always cross to a later 3304-derived block.
Why is my 941 hard to start after it sits, even with good batteries?
The most commonly reported cause is moisture or contamination working into the fuel filter during idle periods, causing stumbling or a no-start rather than a clean crank-and-run. The fix pattern reported by owners: drain water from the fuel bowl, replace the filter, then bleed the system at the filter housing bleed valve while running the priming pump until fuel runs air-free. If a stuck-open injector nozzle valve is letting air get pumped back into the injection pump, cranking with the injection lines cracked at the injectors (or injectors pulled) to purge air, followed by preheating the glow plugs before start, has resolved persistent no-starts. Treat this as routine fuel-system housekeeping on a machine this age, not an engine fault.
How does the governor and injection pump behave on this machine, and is that normal?
On these mechanical injection systems the metering pump and governor run flooded with diesel rather than being lubricated by engine oil, and fuel pressure itself is what keeps the governor lubricated and controlled. That means a fuel supply or pressure problem shows up as a governor or hunting/surging complaint even though the governor hardware itself is fine. Confirm fuel delivery and filter condition before condemning the governor or injection pump.
The steering clutch feels wrong or won't fully release. What's the normal behavior and what fails?
On a correctly adjusted pedal, roughly the first 75 to 80 mm (about 3 in) of travel should fully release the steering clutch, with any additional travel then applying the steering brake. If a clutch fails to engage or the brake stays tight after the machine has sat, owners report checking hydraulic fluid level and condition first, then the steering clutch control valve for sticking or contamination, since trapped air in the lines can also cause a clutch to disengage unexpectedly. Because this system controls both steering and braking on a track machine, have your dealer or a qualified technician verify clutch and brake adjustment and function before returning the machine to work.
What undercarriage wear pattern should I expect, and how do I check it?
Like any track-type loader of this vintage, running tracks too tight accelerates pin, bushing, sprocket, and idler wear rather than protecting the undercarriage. Owners measure pin and bushing wear across a span of several links (commonly checked as five pins center-to-center) on the upper run after the machine has moved a bit to settle the track, comparing the span against a new-condition baseline in the roughly 685 mm (27.0 in) range; meaningful bushing wear shows up as that span growing several percent, with turning of the bushings recommended around the 75% mark. Sprocket teeth worn near the top of their wear lines, paired with heavily worn bushing running faces, signal an expensive undercarriage repair is close.
What electrical or charging problems come up on these machines?
These run a 24-volt system, so testing needs 24V-capable equipment rather than automotive gear. A dead ammeter under crank or charge load usually traces to battery cables or the wiring feeding the dash circuit breaker rather than the gauge itself. Weak cranking with known-good batteries points to a failed starter solenoid (which will read silent, no click) or corroded/loose starter wiring; owners report cleaning and re-terminating the starter wiring resolves a surprising number of these before a solenoid or starter replacement is needed. For no-charge complaints, check the alternator wiring harness, voltage regulator, and battery terminal corrosion before swapping the alternator itself.
What should I check before buying a used 941?
Owners consistently describe these as solid, simple machines with nothing unusual to fear beyond normal wear-item costs, but a pre-purchase check should still cover: engine and transmission dipsticks for condition, steering clutch oil (dipsticks under the seat), and final drive oil levels (plugs low at the rear near the sprockets); undercarriage pin/bushing/sprocket wear as above; lift cylinder rods and seals for seeping; and bucket pin/bushing play, all of which add up in repair cost if neglected. Confirm which engine block the machine actually has against its serial prefix before assuming parts interchange. If the machine will see brush or tree work, a ROPS structure is strongly recommended if not already fitted. Have a mechanic familiar with this era of Cat crawler loader inspect it in person before purchase, especially the steering clutch/brake system and undercarriage condition.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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