Overview
The ZF 0501.321.232 CLUTCH BODY is a critical hydraulic actuation component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part houses the clutch piston assembly and directs pressurized oil to engage the clutch pack, enabling smooth torque transfer from the engine to the driveline. As a core element of the clutch and coupling system, the 0501.321.232 ensures precise modulation of gear engagement under heavy loads. When rebuilding a transmission, this clutch body must be inspected alongside the 2094104412 MAIN SHAFT and the 2094304054 MAIN SHAFT, as these components share the same rotating assembly.
Symptoms of Failure
- Delayed or harsh engagement: A worn clutch body can cause “ZF transmission clutch slipping under load,” leading to hesitation when shifting from neutral to drive.
- Internal hydraulic leaks: Cracks or seal wear in the 0501.321.232 often result in “ZF transmission oil leak from bell housing” due to pressurized fluid escaping past the piston.
- Erratic gear selection: When the clutch body fails to hold pressure, operators may experience “WG100 transmission gear hunting” where the transmission randomly shifts between ratios.
- Burning clutch smell: Insufficient clamping force from a degraded clutch body causes “automatic transmission burnt odor” as friction plates overheat.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 0501.321.232 |
| Material | High-strength cast aluminum alloy |
| Weight | 2.8 kg (6.2 lbs) |
| Outer Diameter | 195 mm |
| Inner Diameter | 85 mm |
| Height | 72 mm |
| Seal Type | PTFE lip seal (integrated) |
| OEM Reference | ZF 0501.321.232 |
Compatibility
This clutch body is specifically designed for ZF WG-series powershift transmissions. Verified fitments include the WG100, WG130, and WG131 models commonly found in industrial forklifts, telehandlers, and agricultural loaders. It may also be compatible with the WG180 and WG200 series when used in conjunction with the 2094106010 SHIFT SYSTEM and the 2094206001 GEARSHIFT SHAFT. Always cross-reference your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from clutch to planetary gears |
| 2094304054 | MAIN SHAFT | Alternate shaft for WG130 high-torque applications |
| 2094106010 | SHIFT SYSTEM | Controls hydraulic flow to clutch body |
| 2094206001 | GEARSHIFT SHAFT | Mechanical link between shift lever and valve body |
| 2094306053 | GEARSHIFT SHAFT | Reinforced shaft for WG131 models |
| 0630513070 | SNAP RING | Secures clutch body to main shaft |
| 2094306019 | WASHER | Thrust washer for clutch pack preload |
| 0732040444 | COMPRESSION SPRING | Returns clutch piston to disengaged position |
| 0732040728 | COMPRESSION SPRING | Heavy-duty spring for high-pressure applications |
| 2093206001 | BUSH | Guides gearshift shaft through housing |
Frequently Asked Questions
Q: Can the 0501.321.232 clutch body be rebuilt instead of replaced?
A: While the clutch body itself is a machined casting, the internal seals and piston can be replaced. However, ZF recommends replacing the entire 0501.321.232 unit if there is visible scoring or cracking, as rebuilt units may not maintain OEM hydraulic tolerances.
Q: How do I know if my WG130 needs a new clutch body?
A: Perform a stall test: if engine RPM rises more than 200 RPM above spec without vehicle movement, the clutch body is likely leaking pressure. Pair this diagnosis with an inspection of the 2094304054 MAIN SHAFT for spline wear.
Q: Is the 0501.321.232 compatible with the ZF WG180 transmission?
A: The WG180 uses a larger clutch body (part 0501.321.245). However, the 0501.321.232 can be adapted with the 2094106010 SHIFT SYSTEM and a spacer kit, though this is not recommended for heavy-duty applications.
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Phone: +86 158 2286 3467 |
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