Overview
The ZF 4657.055.602 5 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly serves as the primary power transfer module within the WG 210 series, integrating the clutch pack, planetary gear sets, and hydraulic control circuits into a single, ready-to-install package. The SKU 4657.055.602 replaces worn or failed core assemblies, restoring full torque capacity and shift quality in loaders, graders, and industrial vehicles. When installing this unit, always pair it with a new 0634313603: O-RING to seal the hydraulic feed ports, and secure the housing using a 0636100801: CAP SCREW set to prevent fluid loss.
Symptoms of Failure
- Delayed or harsh gear engagement – When the internal clutch packs or seals degrade, the transmission hesitates before engaging forward or reverse, often accompanied by a jarring shift.
- External oil leaks at the housing joint – Worn gaskets or cracked casings cause transmission fluid to weep from the bell housing or PTO cover, leaving visible puddles under the vehicle.
- Intermittent power loss under load – A failing assembly may slip during heavy digging or climbing, causing the engine to rev without proportional wheel speed.
- Unusual whining or grinding noises – Damaged bearings or planetary gears produce a high-pitched whine or metallic grinding, especially in lower gear ranges.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4657.055.602 |
| Assembly Type | Complete Powershift Transmission (5 WG 210) |
| Overall Length | 720 mm (approx.) |
| Dry Weight | 185 kg (approx.) |
| Housing Material | High-strength cast iron (GGG-40) |
| Max Input Torque | 2,100 Nm |
| Fluid Capacity | 22 liters (ATF Dexron III) |
| Seal Kit Reference | 4656301023: GASKET |
Compatibility
This complete unit is engineered for the ZF WG 210 series, but it also fits select models in the WG 180 and WG 200 families due to shared bolt patterns and hydraulic routing. Specifically, it is compatible with ZF 5 WG 210, 4 WG 210, and some 5 WG 200 variants used in Volvo, Case, and Caterpillar loaders. For proper installation, ensure the 0636115293: 螺栓 and 0631306816: CYLINDRICAL PIN are replaced to maintain alignment tolerances. Do not use this assembly in WG 160 or WG 310 series without verifying the input shaft spline count.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636115293 | 螺栓 | Housing mounting bolt |
| 0634313603 | O-RING | Hydraulic port seal |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for case halves |
| 0636100801 | CAP SCREW | Clutch pack retaining fastener |
| 4681301015 | FIXING PLATE | Locks planetary gear carrier |
| 4681301016 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4681301017 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | PTO cover bolt |
| 0750100162 | OIL FEED.HOUSG. | Hydraulic feed housing adapter |
| 4656301023 | GASKET | Output flange seal |
