ZF 4657.024.153 4 WG 190 Powershift Transmission Assembly | Complete Unit

Overview

This ZF 4657.024.153 4 WG 190 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. As the core power transfer module in the WG 190 series, this assembly integrates the planetary gear sets, clutch packs, and hydraulic control system into a single, ready-to-install package. The SKU 4657.024.153 is a direct replacement for original equipment transmissions, ensuring precise fitment and rated torque capacity for wheel loaders, dozers, and material handlers. It sits at the heart of the driveline, converting engine torque into controlled, shift-on-the-go performance.

Symptoms of Failure

• Delayed or harsh engagement: When the complete unit wears, operators notice a pronounced lag or a jarring clunk when shifting from forward to reverse, indicating internal clutch pack wear.
• Erratic shifting under load: A failing assembly may hunt between gears or fail to hold a selected gear during heavy pushing or lifting operations, leading to productivity loss.
• External oil seepage at housing joints: Worn seals and gaskets within the assembly cause fluid to weep from the mating surfaces of the TRANSMISSION HOUSING and the HOUS.FRONT SECT, leaving visible drips on the bell housing.
• Metallic debris in the oil filter: Internal component fatigue generates fine metal particles, which can clog the SCREEN SHEET and indicate imminent failure of the complete unit.

Technical Specifications

Compatibility

This complete unit is engineered for the ZF WG 190 series, specifically the 4-speed variant. It is also mechanically compatible with the WG 180 and WG 200 series transmissions when used with the correct HOUSING REAR PART and HOUSING REAR SECTION. The assembly is a direct fit for ZF 4 WG 180, 4 WG 190, and 4 WG 200 models used in articulated dump trucks, wheel loaders, and industrial tractors. Always verify the bell housing pattern and output flange configuration against your existing unit before installation.

Related Components

Frequently Asked Questions

Q: Is the ZF 4657.024.153 a direct bolt-in replacement for my existing 4 WG 190?
A: Yes, this complete unit is a factory-spec assembly. It includes all internal clutches, shafts, and the hydraulic valve body. You will need to transfer your external shift linkage and cooler lines.

Q: What is the typical service life of this assembly before a rebuild is needed?
A: Under normal operating conditions with proper fluid maintenance, this unit can last 8,000 to 12,000 hours. Harsh applications like rock handling may reduce this interval.

Q: Can I install this unit without replacing the housing sections?
A: It is strongly recommended to inspect the TRANSMISSION HOUSING and the HOUS.FRONT SECT for cracks or wear. Reusing damaged housings will void the warranty on this complete unit.