Overview
The ZF 4657.056.165 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully assembled, drop-in replacement for heavy-duty powershift transmissions in the WG 210 series. This complete unit integrates the main gear train, clutch packs, and hydraulic control system into a single, pre-tested assembly. The SKU 4657.056.165 serves as the central structural and operational core of the transmission, housing all rotating components and directing torque flow through six forward speeds. It is designed to interface directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT, ensuring precise alignment and sealing for long service life in construction, mining, and agricultural machinery.
Symptoms of Failure
- Oil leaks around the main case: When the assembly wears, hydraulic fluid may seep from the mating surfaces between the unit and the HOUSING REAR PART, leading to low pressure and erratic shifting.
- Gear slipping under load: Internal clutch pack wear or seal degradation within the 4657.056.165 causes torque loss, especially when climbing grades or hauling heavy payloads.
- Delayed or harsh engagement: A failing unit may produce a noticeable lag when shifting from neutral to drive, followed by a jarring engagement due to worn valve bodies or piston rings.
- Unusual whining or grinding noises: Bearing fatigue or gear tooth damage inside the complete assembly generates metallic sounds that intensify with engine RPM, indicating imminent failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.056.165 |
| Assembly Type | Complete Powershift Unit (6 WG 210) |
| Dry Weight | Approx. 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| OEM Reference | ZF 4657.056.165 |
| Torque Capacity | Up to 2,100 Nm |
| Speed Range | 6 forward / 1 reverse |
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, as well as their derivatives used in telehandlers, wheel loaders, and dump trucks. The assembly is designed to bolt directly to the HOUSING REAR SECTION and the front housing components. For proper installation, ensure that the CYLINDRICAL PIN and CAP SCREW fasteners are replaced simultaneously to maintain alignment integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Outer casing that encloses the gear train and oil sump |
| 4657201167 | HOUS.FRONT SECT | Front section housing the input shaft and torque converter interface |
| 4657201171 | HOUSING REAR PART | Rear cover that supports output shaft bearings and PTO drives |
| 4657298103 | HOUSING REAR SECTION | Intermediate rear housing for additional gear reduction stages |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise housing mating |
| 0636100801 | CAP SCREW | High-tensile bolt for securing housing flanges |
| 4656301148 | FIXING PLATE | Locking plate to prevent fastener loosening under vibration |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic oil return line |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for suction side protection |
| 0636100803 | CAP SCREW | Longer bolt for rear housing attachment points |
