Overview
The ZF 4642.054.014 4 WG 150 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway machinery. This assembly integrates the clutch pack, planetary gear sets, and hydraulic control valve body into a single, ready-to-install package. As a core component of the WG 150 series, it manages torque distribution across four forward and reverse speeds. The SKU 4642.054.014 is a direct OEM replacement, ensuring precise fitment within the transmission housing. When paired with a robust TRANSMISSION HOUSING (4642101109), this assembly delivers reliable power flow under extreme loads. The unit also interfaces with the TYPE PLATE (0730365125) for correct identification during service.
Symptoms of Failure
- Delayed engagement or gear slipping under load: Worn clutch discs or piston seals inside the 4642.054.014 cause hesitation when shifting from neutral to drive, especially on inclines.
- Erratic shift patterns and harsh engagement: Internal hydraulic pressure loss leads to jarring shifts between forward and reverse gears, often accompanied by a metallic grinding noise.
- External oil leaks near the bell housing: Degraded O-rings or cracked housing seals allow transmission fluid to escape, leaving puddles under the machine and reducing lubrication to the TRANSMISSION HOUSING (4642301205).
- Overheating during continuous operation: Slipping clutches generate excessive heat, triggering warning lights and reducing overall transmission efficiency.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4642.054.014 |
| Assembly Type | Complete Powershift Unit (4 WG 150) |
| Dry Weight | ~185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | Cast Iron (GGG-40) |
| OEM Reference | ZF 4 WG 150 |
| Fastener Torque (Main Housing) | 120 Nm (using HEXAGON SCREW (0636100621)) |
Compatibility
This complete unit is engineered for the ZF WG 150 series, but its internal architecture shares core components with larger WG 180 and WG 200 variants. It is directly compatible with ZF 4 WG 150, 4 WG 160, and 4 WG 180 transmissions found in loaders, graders, and industrial tractors. The assembly requires a matching GROOVED STUD (0631311009) for secure mounting to the engine flywheel housing. For proper sealing, always install a new GASKET (4644306470) between the unit and the bell housing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4642301205 | TRANSMISSION HOUSING | Secondary housing for clutch pack |
| 0730365125 | TYPE PLATE | Identification plate for serial number |
| 0631311009 | GROOVED STUD | Mounting stud for engine connection |
| 4642301168 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4642301169 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100621 | HEXAGON SCREW | Fastener for housing assembly |
| 4642301186 | SCREEN SHEET | Secondary hydraulic filter element |
| 4644106231 | SHIFT SYSTEM | Hydraulic valve body for gear selection |
| 4644306470 | GASKET | Sealing ring between housing sections |
