Caterpillar TA19-M4WD
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar TA19-M4WD is a heavy-duty automatic transmission designed for OEM applications in severe-duty agricultural, rail, and industrial equipment. It features 16 forward speeds and is rated for 336 kW (450 hp) with a maximum torque of 1,549 lb-ft. The unit is part of Caterpillar's OEM Solutions powertrain portfolio, intended for integration into custom chassis and specialized machinery rather than standalone retail sale. Configurations vary by application, including single, double, or triple reduction final drives, and it is often paired with Caterpillar industrial engines such as the C13 or C15 series to meet Tier 4 Final emissions standards.
Across the TA19 and TA22 series generations, Caterpillar refined the powertrain's electronic control integration to improve shift smoothness and fuel efficiency. The TA19-M4WD remains significant in the used and parts market because its robust torque converter and hardened gear sets are compatible with a wide range of legacy and modern OEM builds, including water trucks, fuel tankers, and heavy tractors. Its modular design allows for cost-effective overhauls, making it a preferred choice for fleet managers maintaining older specialized equipment where complete machine replacement is economically unviable.
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 TA19-M4WD specifications
Engine
| Model | Cat C13 ACERT |
| Emissions Tier | U.S. EPA Tier 4 Final / EU Stage IV / Japan 2014 |
| Power | 129.4 kW (174 hp) per ISO 14396:2002 |
Weights
| Operating Weight | Not documented for this exact serial range — verify with your dealer |
| Shipping Weight | Not documented for this exact serial range — verify with your dealer |
| Ground Pressure | Not documented for this exact serial range — verify with your dealer |
Dimensions
| Transport Length | Not documented for this exact serial range — verify with your dealer |
| Transport Width | Not documented for this exact serial range — verify with your dealer |
| Transport Height | Not documented for this exact serial range — verify with your dealer |
| Wheelbase | Not documented for this exact serial range — verify with your dealer |
| Ground Clearance | Not documented for this exact serial range — verify with your dealer |
Performance
| Travel Speeds | Not documented for this exact serial range — verify with your dealer |
| Transmission Speeds | 16 forward speeds |
| Transmission Power Rating | 336 kW (450 hp) |
| Transmission Maximum Torque | 1,549 lb-ft |
Service capacities (summary)
| Fuel Tank | Not documented for this exact serial range — verify with your dealer |
| Hydraulic System | Not documented for this exact serial range — verify with your dealer |
| Engine Oil | Not documented for this exact serial range — verify with your dealer |
| Cooling System | Not documented for this exact serial range — verify with your dealer |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Caterpillar TA19-M4WD maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the TA19-M4WD beyond the schedule
Predictive Maintenance & Fluid Analysis
Integrate Scheduled Oil Sampling (SOS) into the 1,000-hour and 2,000-hour intervals. Analyze hydraulic fluid for ISO cleanliness codes and wear metals indicating pump or valve degradation. Monitor transmission oil for copper content, which signals bushing wear, and iron content for gear wear. Check coolant pH and SCA concentration to prevent liner pitting. Use these data points to adjust service intervals for dusty or high-load environments, preventing catastrophic failure before it occurs.
Corrective & Common Repairs
Address common TA19-M4WD issues by inspecting the torque converter for seal leaks and shimming wear during the 500-hour service. Replace the hydraulic return filter immediately if contamination is detected to protect sensitive valves. Check the 2-wire Ethernet connection for the transmission ECM to ensure proper communication with the engine control module. Inspect final drive seals for weeping, which indicates internal pressure buildup or seal degradation, and replace gaskets to prevent fluid loss and contamination.
Overhaul & Rebuild Points
Plan major overhauls at the 2,000-hour milestone or when SOS analysis shows elevated wear metals. Disassemble the torque converter to inspect turbine and stator bushings for clearance limits. Replace all internal seals and O-rings in the transmission valve body. Rebuild final drives by replacing planetary gear sets and bearings if wear measurements exceed OEM tolerances. Verify clutch pack integrity and replace friction elements if slippage is detected during operation.
Seasonal & Environment Servicing
In cold climates, verify fluid viscosity ratings for Cat DEO or TDTO fluids to ensure proper flow at startup. In high-dust environments, shorten air filter service intervals and inspect radiator fins daily to prevent overheating. For quarry or aggregate applications, increase undercarriage inspection frequency and check final drive oil for silica contamination. Adjust coolant mix ratios for freezing protection and verify heater core operation to maintain cabin comfort and defrost capability during winter operations.
TA19-M4WD fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E360-3 | Engine Coolant Temperature — High (Critical) | Low coolant level, failed thermostat, water pump failure, or blocked radiator cores. | Stop operation immediately. Check coolant level and inspect for leaks. Do not restart until cooling system is verified. |
| E361-3 | Engine Coolant Temperature — Very High (Shutdown) | Severe cooling system failure or catastrophic loss of coolant. | Engine has shut down. Perform full cooling system diagnosis before attempting restart. |
| 110-0 | Engine Coolant Temperature — Above Normal | Low coolant level, thermostat failure, or restricted coolant flow. | Inspect cooling system, refill coolant to spec, and test thermostat function. |
| 110-3 | Engine Coolant Temperature Sensor — Voltage Above Normal | Open circuit in sensor wiring or short to power on the sensor circuit. | Check wiring harness for damage; replace sensor if circuit integrity is confirmed. |
| 174-3 | Engine Fuel Temperature — Voltage Above Normal | Open circuit in fuel temperature sensor wiring. | Inspect harness and replace sensor if necessary. |
| 190-8 | Engine Speed — Abnormal Frequency | Speed sensor air gap issue, sensor failure, or tone ring damage. | Check sensor gap; test speed sensor and tone ring for damage. |
| 41-3 | 8-Volt DC Supply — Voltage Above Normal | Short to power on the 8V reference circuit shared by multiple sensors. | Inspect sensors sharing the 8V supply and isolate the fault by disconnecting them one at a time. |
| 41-4 | 8-Volt DC Supply — Voltage Below Normal | Short to ground on the 8V reference circuit. | Disconnect sensors one at a time to locate the shorted component. |
| 2348-9 | SAE J1939 Data Link #2 — Abnormal Update Rate | CAN bus wiring damage, connector corrosion, or termination fault. | Check CAN wiring continuity and measure termination resistance. |
| 36:164-3 | Injector Actuation Pressure — Voltage Above Normal | Fault at the actuator pressure sensor or its signal circuit. | Look for problems at the actuator pressure sensor or its signal circuit wiring. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
TA19-M4WD attachments & work tools
Powertrain & Engine Platform
The TA19-M4WD is an OEM power module transmission featuring 16 forward speeds with a rated maximum torque of 1,549 lb-ft (2,099 N·m) and power output of 336 kW (450 hp). It is designed to integrate with Caterpillar industrial engines, such as the C13 ACERT, to provide a complete power solution for specialized machinery applications.
Work Tool Compatibility
As a powertrain component for OEM solutions, the TA19-M4WD does not have direct factory work tool attachments; compatibility is determined by the third-party machine manufacturer's chassis and hydraulic system design. Typical applications include agricultural tractors, rail equipment, and heavy-duty industrial machinery requiring high-torque transmission capabilities.
Hydraulic & Fluid Specifications
Transmission operation requires Caterpillar DEO (Diesel Engine Oil) or equivalent high-quality multi-grade oil meeting specific viscosity and additive standards for severe applications. Hydraulic systems integrated with the power module must utilize Cat HYDO Advanced or equivalent hydraulic oil to ensure optimal performance and component longevity.
Maintenance & Service
Service procedures for the TA19-M4WD are documented in the Caterpillar TA19-M4WD AG TRANSMISSION XAF Service and Repair Manual, covering disassembly, testing, and troubleshooting. Regular maintenance intervals for fluid changes and filter replacements must follow the specific OEM machine manufacturer's guidelines rather than standard construction equipment schedules.
All TA19-M4WD assemblies by section
Every catalogued assembly group for the Caterpillar TA19-M4WD. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Electrical And Starting System
258-6553 Control Gp-Transmission -4-Wheel Drive
| 11***43 | Sleeve-Plastic; (32-mm Dia)(240-cm) | 0 |
| 11***45 | Sleeve-Plastic; (80-mm Dia)(60-cm) | 0 |
| 11***85 | Seal-O-Ring; (13.94mm Id) | 4 |
161-9932 Sensor Gp-Pressure
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 16***32 | Sensor Group-Pressure; -Transmission Oil | 1 |
| 3E***71 | Wedge; (Receptacle Lock) (3 Pin) | 1 |
Power Train
257-1092 Case & Parts Gp-Planetary
| 08***17 | Tack-Fastener | 2 |
| 10***05 | Elbow; (90 Degree) | 1 |
| 13***02 | Seal-Lip-Type | 1 |
246-8144 Clutch Gp -Output Planetary
| 16***96 | Gear-Ring; (92-Teeth) | 1 |
| 16***07 | Ring-Seal | 1 |
| 16***08 | Ring-Seal | 1 |
258-5625 Clutch Gp -Front Wheel Assist
| 09***30 | Ring; (Retaining) | 1 |
| 11***25 | Screw-Flat Head; (M6x1x25-mm) | 4 |
| 13***02 | Seal-Lip-Type | 1 |
258-6552 Control Gp-Transmission Hyd -2-Wheel Drive
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 2 |
| 11***43 | Sleeve-Plastic; (32-mm Dia)(240-cm) | 0 |
| 11***45 | Sleeve-Plastic; (80-mm Dia)(60-cm) | 0 |
258-6556 Cover Gp-Shipping
| 14***06 | Plug As | 3 |
| 17***04 | Seal-O-Ring | 2 |
| 25***56 | Cover Group-Shipping | 1 |
258-6554 Cover Gp-Transmission
| 14***95 | Plug As | 1 |
| 16***19 | Plug As | 1 |
| 1H***78 | Seal-O-Ring | 1 |
258-4452 Drive Gp-Pump
| 17***90 | Cover | 1 |
| 1F***71 | Bearing-Ball (Note D) | 4 |
| 1H***78 | Seal-O-Ring | 2 |
279-9913 Mounting Gp-Transmission
| 14***07 | Plug; (Hex Head) (-6 Orb) (Current) (16***35 Friction Disc Interchangeable With 11***47) (Use All Of One Part Number) | 3 |
| 25***80 | Housing-Bell | 1 |
| 27***09 | Cover-Shipping | 1 |
258-5624 Shaft Gp-Transmission
| 13***60 | Disc-Friction | 6 |
| 13***61 | Plate-Clutch | 6 |
| 16***18 | Bearing | 4 |
293-5526 Transmission Ar-Complete -4-Wheel Drive
| 25***59 | Transmission Ar-Complete; -4-Wheel Drive | 1 |
| 29***26 | Transmission Ar-Complete; -4-Wheel Drive | 1 |
279-9021 Transmission Ar-Complete -4-Wheel Drive
| 25***93 | Transmission Ar-Core; -8-Speed | 1 |
| 25***25 | Clutch Group; -Front Wheel Assist | 1 |
| 25***53 | Control Group-Transmission; -4-Wheel Drive | 1 |
258-6557 Transmission Ar-Complete -2-Wheel Drive
| 25***93 | Transmission Ar-Core; -8-Speed | 1 |
| 25***52 | Control Group-Transmission Hydraulic; -2-Wheel Drive | 1 |
| 25***54 | Cover Group-Transmission | 1 |
293-5527 Transmission Ar-Complete -4-Wheel Drive
| 27***21 | Transmission Ar-Complete; -4-Wheel Drive | 1 |
| 29***27 | Transmission Ar-Complete; -4-Wheel Drive | 1 |
293-5525 Transmission Ar-Complete -2-Wheel Drive
| 25***57 | Transmission Ar-Complete; -2-Wheel Drive | 1 |
| 29***25 | Transmission Ar-Complete; -2-Wheel Drive | 1 |
258-6559 Transmission Ar-Complete -4-Wheel Drive
| 25***93 | Transmission Ar-Core; -8-Speed | 1 |
| 25***25 | Clutch Group; -Front Wheel Assist | 1 |
| 25***53 | Control Group-Transmission; -4-Wheel Drive | 1 |
257-1093 Transmission Ar-Core -8-Speed
| 24***44 | Clutch Group; -Output Planetary | 2 |
| 25***92 | Case & Parts Group-Planetary | 1 |
| 25***93 | Transmission Ar-Core; -8-Speed | 1 |
216-5343 Valve Gp-Modulating
| 16***08 | Washer; (13.03x25.4x2.38-mm Thk) | 1 |
| 16***24 | Nut-Self-Locking; (1/2-28-Thd) | 1 |
| 21***43 | Valve Group-Modulating | 1 |
198-1013 Valve Gp-Relief
279-9918 Yoke Gp
Frequently asked questions
What engine is typically paired with the TA19-M4WD?
The TA19-M4WD is commonly paired with Caterpillar industrial engines such as the C13 or C15 series, configured to meet Tier 4 Final emissions standards.
What is the operating weight of the TA19-M4WD transmission unit?
Operating weight varies by configuration and final drive setup; consult the specific serial range specification sheet for exact weight data.
What replaced the TA19-M4WD in the Caterpillar lineup?
The TA19-M4WD remains in production as part of the OEM Solutions portfolio; no direct single replacement model exists, though the TA22-M4WD offers higher power ratings for heavier applications.
What TA19-M4WD owners discuss
What are the core powertrain specifications for the Caterpillar TA19-M4WD transmission?
What engine series is typically paired with the TA19-M4WD power module?
What are the typical undercarriage and wear patterns for machines using this powertrain?
What are common electrical or sensor issues associated with the TA19-M4WD power module?
What fluids are recommended for the TA19-M4WD transmission and hydraulic systems?
What maintenance intervals are typical for the TA19-M4WD power module?
What should be checked when buying a used machine with the TA19-M4WD power module?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Need a specific TA19-M4WD part?
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