Overview
The ZF 4642.054.057 WENDEGETRIEBE Powershift Transmission Assembly is a complete, factory-matched unit designed for the demanding environment of industrial drivelines. As a core component of the WG 150 Series, this assembly integrates the reversing gear group and clutch pack into a single, pre-assembled module. The SKU 4642.054.057 serves as the direct replacement for the entire reversing section, eliminating the need to piece together individual gears, shafts, or synchronizers. This unit sits directly between the torque converter and the main output housing, managing directional changes under full load without clutching. When rebuilding a transmission, this assembly is often paired with a new TRANSMISSION HOUSING (4642101109) to ensure proper alignment and sealing of the main case.
Symptoms of Failure
When the ZF 4642.054.057 begins to degrade, operators will notice distinct performance issues. Watch for these specific failure modes:
- Delayed or harsh directional shifts: A worn WENDEGETRIEBE assembly causes a noticeable lag when switching from forward to reverse, often accompanied by a loud clunk.
- Internal hydraulic pressure loss: Cracks in the assembly housing lead to low clutch pack pressure, resulting in gear slipping under load, especially during uphill travel.
- Metallic debris in the oil pan: Worn bearings or gear teeth within the unit shed metal particles, which can clog the SCREEN SHEET (4642301168) and restrict oil flow.
- Oil leaks at the bell housing joint: A failing seal on the assembly allows transmission fluid to weep from the mating surface between the unit and the TRANSMISSION HOUSING (4642301205).
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4642.054.057 |
| Assembly Type | WENDEGETRIEBE (Reversing Gear) Powershift Unit |
| Series | WG 150 |
| Overall Length (approx.) | 385 mm |
| Dry Weight | 42.5 kg (93.7 lbs) |
| Housing Material | High-Grade Cast Iron (GGG-40) |
| Clutch Pack Count | 4 friction discs / 4 steel plates |
| OEM Reference | ZF Friedrichshafen AG |
| Mounting Hardware | Requires HEXAGON SCREW (0636100621) (x6) |
Compatibility
This complete unit is engineered for the ZF WG 150 Series powershift transmissions. While the 4642.054.057 is specifically calibrated for the WG150, it shares its mounting footprint with the WG180 and WG200 series in certain off-highway applications. Always verify the bell housing pattern against your existing TYPE PLATE (0730365125) to confirm exact fitment. The assembly is compatible with all WG150 variants used in telehandlers, wheel loaders, and industrial tractors from 120 to 180 hp. For proper installation, ensure the GROOVED STUD (0631311009) is torqued to factory specifications to prevent alignment drift.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main case for gear train support |
| 4642301205 | TRANSMISSION HOUSING | Rear housing for output shaft |
| 0730365125 | TYPE PLATE | Identification tag for model verification |
| 0631311009 | GROOVED STUD | Alignment dowel for housing mating |
| 4642301168 | SCREEN SHEET | Fine mesh oil filter (early type) |
| 4642301169 | SCREEN SHEET | Fine mesh oil filter (late type) |
| 0636100621 | HEXAGON SCREW | Mounting bolt for assembly |
| 4642301186 | SCREEN SHEET | Suction strainer for pump inlet |
| 4644106319 | SHIFT SYSTEM | Hydraulic valve body (standard) |
| 4644159356 | SHIFT SYSTEM | Hydraulic valve body (high-flow) |
