ZF 4168.034.110 CONVERTER Torque Converter Assembly | Complete Unit

Overview

The ZF 4168.034.110 CONVERTER Torque Converter Assembly is a critical hydraulic component that transfers engine torque to the transmission input shaft within WG-series powershift transmissions. This complete unit, identified by SKU 4168.034.110, sits between the flywheel and the gear set, using a stator, turbine, and impeller to multiply torque during low-speed operation. It is engineered to handle high thermal loads and continuous duty cycles found in construction and agricultural machinery. When paired with a robust TRANSMISSION HOUSING, this assembly ensures reliable power delivery and smooth engagement under load.

Symptoms of Failure

• Shuddering or vibration during acceleration: A worn torque converter stator clutch can cause noticeable shuddering when the vehicle moves from a standstill, often described as “torque converter shudder.”
• Delayed or harsh engagement: If the converter fails to lock up properly, operators may experience a significant lag between shifting and actual movement, or a sudden jolt when gears engage.
• Overheating transmission fluid: Internal leakage within the converter reduces hydraulic efficiency, leading to elevated fluid temperatures and potential damage to seals and clutches.
• Whining or grinding noises: Worn bearings or damaged turbine fins produce a distinct whining sound that changes with engine RPM, indicating imminent converter failure.

Technical Specifications

Compatibility

This torque converter assembly is specifically engineered for ZF WG 160, WG 190, WG 210, WG 211, and WG 230 series transmissions. It is commonly found in telehandlers, wheel loaders, and dump trucks from manufacturers such as Liebherr, JCB, and Manitou. The unit directly interfaces with the HOUS.FRONT SECT and the HOUSING REAR PART to form a sealed hydraulic circuit. For certain WG 211 variants, the HOUSING REAR PART (alternate casting) may be required to ensure proper alignment. Always verify your transmission model and housing configuration before installation.

Related Components

Frequently Asked Questions

Q: How do I know if my ZF WG 210 needs a new torque converter?
A: If you experience persistent overheating of transmission fluid combined with a shudder during low-speed maneuvers, the converter stator clutch is likely failing. Check fluid for metallic debris; if present, replace the converter assembly immediately.

Q: Can I install the 4168.034.110 converter without replacing the housing?
A: Yes, provided the existing HOUS.FRONT SECT and rear housing are free from cracks or warping. However, it is recommended to inspect all sealing surfaces and replace the CYLINDRICAL PIN and cap screws during reassembly.

Q: What is the typical lifespan of this torque converter in a wheel loader?
A: Under normal operating conditions with proper fluid maintenance, the 4168.034.110 unit typically lasts 4,000 to 6,000 hours. Heavy shock loading or contaminated fluid can reduce this significantly.