Overview
The ZF 4657.055.145 5 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated, factory-assembled gearbox core designed for heavy-duty off-highway machinery. This complete unit serves as the primary power transfer module, converting engine torque into controlled, multi-speed output for wheel loaders, dozers, and industrial vehicles. The SKU 4657.055.145 identifies a specific 5-speed configuration within the WG 210 series, incorporating all internal clutches, planetary gear sets, and hydraulic control elements. It sits directly between the engine flywheel and the final drive, with the TRANSMISSION HOUSING providing the structural backbone for the entire assembly.
Symptoms of Failure
- Erratic gear engagement or slipping under load: When the complete unit wears, internal clutch packs fail to hold torque, causing the machine to hesitate or lose power during digging or pushing operations.
- External oil leaks at housing seams: Degraded seals between the HOUS.FRONT SECT and the main body lead to visible hydraulic fluid drips, often mistaken for simple hose failures.
- Delayed or harsh shifting between forward and reverse: A failing assembly causes pressure drops in the hydraulic circuit, resulting in jarring shifts or a noticeable pause before the transmission responds.
- Unusual whining or grinding noises from the bell housing: Worn bearings or damaged planetary gears produce metallic sounds that intensify with engine RPM, indicating imminent internal failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.055.145 |
| Assembly Type | Complete Powershift Transmission |
| Speed Count | 5 Forward / 1 Reverse |
| Dry Weight (approx.) | 385 kg (849 lbs) |
| Overall Length | 720 mm |
| Overall Width | 510 mm |
| Overall Height | 580 mm |
| Primary Material | High-grade cast iron housing with steel planetary gears |
| OEM Reference | ZF 5 WG 210 |
| Max Input Torque | 2,100 Nm |
| Hydraulic Pressure Range | 18–22 bar |
Compatibility
This complete unit is engineered for the ZF WG 210 series of powershift transmissions. It is directly compatible with models including the WG180, WG200, and WG210 variants used in articulated dump trucks and large wheel loaders. The assembly also fits select WG 150 and WG 250 platforms when paired with the correct HOUSING REAR PART and HOUSING REAR SECTION adapters. Always verify the bell housing pattern and output flange configuration before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing the input shaft and pump drive |
| 4657201170 | HOUSING REAR PART | Rear casing supporting output shaft bearings |
| 4657298102 | HOUSING REAR SECTION | Extended rear cover for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | M16 bolt for securing housing sections |
| 4656301148 | FIXING PLATE | Locking plate for clutch piston retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic oil return |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for suction line |
| 0636100803 | CAP SCREW | M12 bolt for valve body attachment |
