Overview
The ZF 4657.055.131 5 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated gearbox core designed for heavy-duty off-highway machinery. This complete assembly serves as the primary power transfer module, converting engine torque into controlled motion for wheel loaders, graders, and industrial vehicles. The SKU 4657.055.131 identifies a factory-matched unit that includes the main casing, clutch packs, and planetary gear sets. It sits between the engine flywheel and the driveline, managing multiple speed ranges under load. For proper structural integrity, this assembly must be paired with a TRANSMISSION HOUSING to seal the internal components against debris and pressure loss.
Symptoms of Failure
- Delayed engagement or gear slipping under load: When the internal clutch packs wear, the transmission hesitates before moving or loses torque during operation, often accompanied by a burning smell.
- External oil leaks near the bell housing: Cracks or gasket failures in the main casing cause fluid to seep out, leading to low pressure and erratic shifting.
- Unusual grinding or whining noises: Worn bearings or damaged planetary gears produce metallic sounds that intensify with engine RPM, indicating imminent internal failure.
- Erratic shift patterns or failure to engage reverse: Hydraulic valve body issues or worn solenoids prevent the transmission from selecting gears properly, especially after extended use.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.055.131 |
| Assembly Type | 5-Speed Powershift (WG 210 Series) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-strength cast iron |
| Max Input Torque | 2,100 Nm |
| Fluid Capacity | 22 liters (ATF Dexron III) |
| OEM Reference | ZF 5 WG 210 |
Compatibility
This complete unit is engineered for the ZF WG 210 Series powershift transmissions. It is directly compatible with models including the WG180, WG200, and WG210 variants found in construction equipment from manufacturers such as Volvo, Caterpillar, and Case. The assembly also fits select WG 150 and WG 250 platforms when used with the correct adapter kit. For a secure installation, ensure the HOUS.FRONT SECT is properly aligned, and verify that the HOUSING REAR PART and HOUSING REAR SECTION are free from cracks before assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft and bearings |
| 4657201170 | HOUSING REAR PART | Rear casing component for output shaft alignment |
| 4657298102 | HOUSING REAR SECTION | End cover for rear bearing and seal retention |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Mounting bracket for transmission support |
| 4657301032 | SCREEN SHEET | Filter screen for hydraulic fluid intake |
| 4657301033 | SCREEN SHEET | Secondary filter screen for return line |
| 0636100803 | CAP SCREW | Bolt for clutch pack retention |
