Overview
The ZF 0732.000.234 CUP SPRING is a precision-engineered component designed for the WG92 and WG98 series transmissions. This OEM genuine part functions as a critical load-bearing element within the clutch pack assembly, providing consistent axial preload to maintain proper gear engagement and hydraulic balance. Positioned between the piston and pressure plate, the cup spring absorbs vibrational forces and compensates for thermal expansion during operation. The SKU 0732.000.234 ensures exact dimensional tolerances required for seamless integration with the 4660101015: TRANSMISSION HOUSING and the 4660301054: HOUSING II, guaranteeing reliable torque transfer in heavy-duty applications.
Symptoms of Failure
- Delayed or harsh gear engagement: A worn cup spring loses its ability to maintain consistent clutch pack pressure, causing noticeable hesitation or jarring shifts during acceleration.
- Intermittent oil leaks near the bell housing: Fatigue cracks in the spring can disrupt the seal between the piston and housing, leading to fluid seepage around the 0631306174: CYLINDRICAL PIN interface.
- Progressive gear slipping under load: Reduced spring tension allows clutch discs to slip during high-torque operations, often accompanied by a burning odor from overheated friction material.
- Unusual metallic rattling at idle: A fractured or deformed cup spring may produce a distinct clicking sound as it contacts the 0769123894: TYPE PLATE during low-speed rotation.
Technical Specifications
| Parameter | Value |
|---|---|
| Outer Diameter | 82.5 mm |
| Inner Diameter | 45.0 mm |
| Thickness (Free State) | 4.2 mm |
| Material | Spring Steel (DIN 17221) |
| Surface Treatment | Phosphate Coated |
| Weight | 0.18 kg |
| OEM Reference | 0732.000.234 |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This cup spring is engineered for ZF WG series transmissions, specifically the WG92 and WG98 models. It is also compatible with the WG180, WG200, and WG210 variants when used in clutch pack positions requiring a 4.2 mm spring rate. Always verify fitment with your transmission’s 4660101015: TRANSMISSION HOUSING casting number to ensure correct axial clearance. The part integrates directly with the 4660301054: HOUSING II and the 0631306174: CYLINDRICAL PIN for secure alignment during assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660101015 | TRANSMISSION HOUSING | Encloses gear train and supports bearing journals |
| 4660301054 | HOUSING II | Secondary housing for clutch pack and valve body |
| 0631306174 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0769123894 | TYPE PLATE | Identification plate with transmission serial number |
| 0750100022 | SCREW PLUG | Seals oil passages in valve body |
| 4660221029 | SUCTION TUBE | Directs oil flow from sump to pump |
| 0634100317 | O-RING | Seals suction tube connection |
| 0636103273 | CAP SCREW | Fastens housing cover to main case |
| 0634306311 | O-RING | Seals cap screw threads against oil leakage |
| 4660321029 | FIXING PLATE | Retains clutch pack spring assembly |
