ZF 4657.024.101 4 WG 190 Powershift Transmission Assembly | Complete Unit

Overview

This complete ZF 4657.024.101 4 WG 190 Powershift Transmission Assembly is a fully integrated unit designed for heavy-duty off-highway machinery. As the core power transfer module in the WG 190 series, this assembly manages torque distribution across four forward and reverse speeds, enabling smooth clutch engagement under load. The SKU 4657.024.101 replaces the entire transmission housing and internal gearset, making it a direct drop-in solution for rebuilds. It interfaces directly with the 4657101059: TRANSMISSION HOUSING to seal the main case, while the 4657201132: HOUS.FRONT SECT and 4657201103: HOUSING REAR PART enclose the clutch packs and output shaft. This assembly is engineered for continuous operation in loaders, graders, and industrial tractors.

Symptoms of Failure

• Delayed engagement or gear slipping under load: Worn clutch discs or valve body wear within the 4657.024.101 cause hesitation when shifting from neutral to drive, especially on inclines.
• External oil leaks at housing seams: Cracks or gasket failure in the transmission housing lead to fluid loss, often visible near the 4472239184: HOUSING REAR PART interface.
• Abnormal whining or grinding noises: Bearing degradation inside the assembly produces metallic sounds during acceleration, indicating imminent internal damage.
• Overheating and burnt fluid smell: Insufficient lubrication from a failing pump or blocked passages raises operating temperatures, triggering thermal alarms.

Technical Specifications

Compatibility

This 4657.024.101 assembly is primarily designed for the ZF WG 190 series, but it also fits select variants of the WG 180 and WG 200 families when used with the correct adapter plates. It is a direct replacement for units in ZF 4 WG 190, 4 WG 180, and 4 WG 200 transmissions found in Volvo, Case, and Caterpillar loaders. Always verify the housing casting numbers—matching the 4657201103: HOUSING REAR PART ensures correct output flange alignment.

Related Components

Frequently Asked Questions

Q: Is the 4657.024.101 a complete unit ready for installation?
A: Yes, this assembly includes the full gearset, clutch packs, and valve body. You will need to transfer your existing 4657101059: TRANSMISSION HOUSING and front/rear sections if they are serviceable.

Q: Can this assembly be used in a ZF WG 200 transmission?
A: It is compatible with WG 200 models that share the same bellhousing pattern. Verify your output shaft length and the 4472239184: HOUSING REAR PART to ensure proper fitment.

Q: What is the typical lifespan of this transmission assembly?
A: With proper maintenance and clean oil, the 4657.024.101 can exceed 8,000 operating hours in non-abrasive environments. Regular replacement of the 4657301032: SCREEN SHEET is recommended every 500 hours.