Overview
The ZF 4656.054.149 4 WG 160 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway machinery. As the core hydraulic-mechanical assembly in the WG 160 series, it integrates the torque converter, planetary gear sets, and clutch packs into a single, pre-assembled housing. This SKU 4656.054.149 replaces the entire rotating assembly, ensuring precise gear engagement under load for wheel loaders, dozers, and industrial forklifts. When paired with a compatible TRANSMISSION HOUSING, this unit delivers reliable power distribution across all forward and reverse speeds.
Symptoms of Failure
- Delayed or harsh engagement: When the 4 WG 160 assembly wears, operators notice a pronounced lag when shifting from neutral to drive, followed by a jarring clutch grab. This indicates internal seal degradation or clutch pack wear.
- Torque converter shudder under load: A low-frequency vibration during acceleration, especially on inclines, points to worn stator bearings or damaged one-way clutches within the unit.
- External oil leaks at the housing seam: Hydraulic fluid weeping from the joint between the main body and the HOUS.FRONT SECT indicates gasket failure or housing distortion, leading to pressure loss.
- Intermittent gear slip in higher ranges: The transmission momentarily loses power in 3rd or 4th gear, often accompanied by a whining noise, signaling worn planetary gears or failing piston seals.
Technical Specifications
| Parameter | Specification |
|---|---|
| Assembly Type | Complete Powershift Unit (4 WG 160) |
| OEM Reference | ZF 4656.054.149 |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 410 mm |
| Primary Material | High-grade cast iron with hardened steel gears |
| Max Input Torque | 1,600 Nm |
| Fluid Capacity (assembly only) | 12.5 liters |
Compatibility
This complete unit is engineered specifically for the ZF WG 160 series transmissions. It is directly compatible with WG 160 models used in construction and agricultural equipment. While the core assembly is unique to the WG 160, certain housing components—such as the HOUSING REAR PART and the HOUSING REAR SECTION—are shared across the WG 180 and WG 200 families, allowing for modular rebuilds. Always verify the serial number of your existing transmission before ordering this SKU 4656.054.149.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101058 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4656201075 | HOUS.FRONT SECT | Front section housing for torque converter and pump drive |
| 4656201079 | HOUSING REAR PART | Rear housing section covering output shaft and PTO |
| 4656298051 | HOUSING REAR SECTION | Extended rear housing for auxiliary drives |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise housing assembly |
| 4656301148 | FIXING PLATE | Retaining plate for clutch piston springs |
| 0636100817 | CAP SCREW | High-tensile bolt for housing flange fastening |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic circuit protection |
| 4656301017 | SCREEN SHEET | Secondary filter screen for return line debris |
| 0636100803 | CAP SCREW | Bolt for securing the valve body cover |
Frequently Asked Questions
Q: Can this complete unit be installed without replacing the housing?
A: Yes, the ZF 4656.054.149 is designed as a drop-in assembly. However, we strongly recommend inspecting the TRANSMISSION HOUSING for cracks or wear, as a damaged housing will compromise the new unit’s alignment and sealing.
Q: What is the typical service life of this 4 WG 160 assembly?
A: Under normal operating conditions with proper fluid maintenance, the assembly lasts 8,000 to 12,000 hours. Early symptoms like shuddering or leaks indicate it is time for replacement.
Q: Does this part include the torque converter?
A: Yes, the complete unit integrates the torque converter, all planetary gear sets, and clutch packs. You will still need to order the HOUS.FRONT SECT separately if your existing front section is damaged.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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