Overview
The ZF 4657.056.132 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated drop-in replacement for heavy-duty off-highway applications. This complete assembly serves as the central power transfer hub, converting engine torque into controlled hydraulic and mechanical output across six forward speeds. The SKU 4657.056.132 designates a factory-matched unit that includes the main gear cluster, clutch packs, and valve body. It mounts directly between the engine bell housing and the final drive, with the TRANSMISSION HOUSING providing the structural backbone for the entire assembly. The HOUS.FRONT SECT and HOUSING REAR PART enclose the rotating components, while the HOUSING REAR SECTION seals the output shaft area.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or degraded seals inside the 6 WG 210 cause delayed shifts or complete loss of drive in specific ranges.
- Hydraulic oil leaks from housing joints: Cracks or warpage in the main casing force fluid past gaskets, often visible as drips near the HOUS.FRONT SECT or rear cover.
- Abnormal whining or grinding noises: Bearing failure or gear tooth damage within the assembly produces metallic sounds that intensify with engine RPM.
- Overheating transmission fluid: Internal debris or pump cavitation reduces cooling flow, triggering thermal alarms or burnt oil odor.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.056.132 |
| Assembly Type | Complete Powershift Transmission |
| Dry Weight (approx.) | 285 kg (628 lbs) |
| Overall Length | 720 mm |
| Overall Width | 510 mm |
| Overall Height | 480 mm |
| Housing Material | High-strength cast iron |
| Number of Speeds | 6 forward / 1 reverse |
| Max Input Torque | 2,100 Nm |
| OEM Reference | ZF WG 210 Series |
Compatibility
This complete unit is engineered for the ZF WG 210 series and is directly compatible with WG 180, WG 200, and WG 220 variants that share the same mounting pattern and hydraulic circuit. It is commonly found in ZF 6 WG 210 powershift transmissions used in wheel loaders, graders, and telescopic handlers from manufacturers such as Caterpillar, Volvo, and Liebherr. Always verify the bell housing pattern and torque converter match before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural casing for gear and clutch assembly |
| 4657201167 | HOUS.FRONT SECT | Front section housing input shaft and pump drive |
| 4657201171 | HOUSING REAR PART | Rear cover supporting output shaft bearings |
| 4657298103 | HOUSING REAR SECTION | Extended rear housing for PTO or flange mount |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing dowel holes |
| 0636100801 | CAP SCREW | M12 fastener for housing joint bolts |
| 4656301148 | FIXING PLATE | Locking plate for clutch piston retention |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil return circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for suction line |
| 0636100803 | CAP SCREW | M10 fastener for valve body mounting |
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