Overview
This ZF 4656.054.171 4 WG 160 Powershift Transmission Assembly is a complete unit engineered for heavy-duty industrial applications. As the core power distribution module in the WG 160 series, it integrates the main gear sets, clutch packs, and hydraulic control circuits into a single, ready-to-install assembly. The SKU 4656.054.171 replaces worn or failed complete units, restoring full torque capacity and shift quality in loaders, dozers, and material handlers. It mounts directly between the engine bellhousing and the final drive, requiring precise alignment with the TRANSMISSION HOUSING to ensure proper oil flow and structural integrity.
Symptoms of Failure
- Erratic or delayed shifting under load: Worn internal clutches or valve body wear cause hesitation when engaging forward or reverse gears, especially in high-torque applications.
- Low hydraulic pressure and overheating: Internal seal degradation leads to pressure drops, causing the transmission to run hot and trigger warning lights on the operator display.
- Metallic debris in the oil pan: Gear tooth spalling or bearing failure produces visible metal particles in the transmission fluid, indicating imminent complete unit failure.
- Oil leaks at the housing joints: Cracks or gasket failures in the HOUS.FRONT SECT or the HOUSING REAR PART allow fluid to escape, reducing lubrication and causing gear slippage.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4656.054.171 |
| Assembly Type | Complete Powershift Unit |
| Weight (approx.) | 185 kg (408 lbs) |
| Dimensions (L x W x H) | 620 x 480 x 410 mm |
| Housing Material | High-strength cast iron |
| Seal Material | Nitrile rubber / Viton |
| Max Input Torque | 1,600 Nm |
| OEM Reference | ZF WG 160 Series |
Compatibility
This complete unit is specifically designed for the ZF WG 160 series. It is also compatible with the WG 180 and WG 200 models when used with the correct adapter plate and the HOUSING REAR SECTION. The assembly fits ZF 4WG-160, 4WG-180, and 4WG-200 transmissions found in construction equipment from Caterpillar, Volvo, and Liebherr. Always verify the housing variant before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101055 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4656201075 | HOUS.FRONT SECT | Front section housing input shaft |
| 4656201076 | HOUSING REAR PART | Rear section supporting output bearings |
| 4656298047 | HOUSING REAR SECTION | Adapter housing for WG 180/200 |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 4656301148 | FIXING PLATE | Secures clutch pack retention |
| 0636100817 | CAP SCREW | M12 bolt for housing fastening |
| 4656301016 | SCREEN SHEET | Fine mesh oil filter (inner) |
| 4656301017 | SCREEN SHEET | Coarse mesh oil filter (outer) |
| 0636100803 | CAP SCREW | M10 bolt for cover plate |
Frequently Asked Questions
Q: Can the ZF 4656.054.171 be rebuilt instead of replaced?
A: While individual components like seals and clutches can be serviced, a complete unit replacement is recommended when the housing or planetary gears show wear. The assembly includes all internal parts pre-calibrated for immediate installation.
Q: What is the typical lifespan of this complete unit?
A: Under normal operating conditions with proper maintenance, the 4 WG 160 assembly lasts 8,000 to 12,000 hours. Contaminated fluid or overheating can significantly reduce this lifespan.
Q: Does this unit include the torque converter?
A: No, the 4656.054.171 is the transmission assembly only. The torque converter is a separate component and must be ordered independently if needed.
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Phone: +86 158 2286 3467 |
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