Overview
The ZF 0732.040.941 COMPRESSION SPRING is a precision-engineered OEM genuine component designed for the WG100, WG130, and WG131 transmission series. This spring is critical for maintaining consistent pressure within the valve body and clutch piston assemblies, ensuring smooth hydraulic actuation during gear shifts. As a direct replacement part, the SKU 0732.040.941 restores the exact spring force required for proper clutch pack engagement and disengagement. When paired with a 5838109007: DIFFERENTIAL, this spring helps regulate the hydraulic timing that prevents driveline shock. It also works in concert with the 0750117075: TAPER ROLLER BEARING to maintain axial alignment under load.
Symptoms of Failure
- Delayed or harsh shifting – A worn compression spring loses its calibrated tension, causing sluggish engagement or abrupt gear changes, especially under load.
- Intermittent clutch slip – When the spring cannot maintain adequate pressure on the piston, the clutch pack fails to lock fully, leading to power loss during acceleration.
- Transmission fluid contamination – A fractured spring can shed metal fragments into the oil circuit, accelerating wear on the 2095209019: DIFFERENTIAL and other rotating assemblies.
- Audible rattling from the valve body – A broken or fatigued spring may produce a metallic chatter at idle or low speeds, indicating loss of preload.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0732.040.941 |
| Material | Chrome-silicon alloy steel (DIN 17223) |
| Wire Diameter | 2.5 mm |
| Outer Diameter | 18.0 mm |
| Free Length | 42.0 mm |
| Spring Rate | 28.5 N/mm |
| Weight | 12 g |
| OEM Reference | ZF 0732.040.941 |
Compatibility
This compression spring is specifically engineered for ZF WG-series powershift transmissions, including the WG100, WG130, and WG131 models. It is also used in certain WG180 and WG200 variants where the valve body employs the same piston return mechanism. For differential assemblies, verify compatibility with the 0631329086: SPRING PIN that retains the spring in its bore. Always cross-reference your transmission serial number against the OEM parts catalog to confirm fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109007 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads |
| 2095209019 | DIFFERENTIAL | Final drive torque distribution |
| 0631329086 | SPRING PIN | Retains compression spring in bore |
| 5838300817 | THRUST WASHER | Reduces axial friction |
| 5838300682 | DIFFERENTIAL AXLE | Transfers rotational force |
| 5838300811 | THRUST WASHER | Controls end-play clearance |
| 5841302064 | THRUST WASHER | High-load axial surface |
| 5838300137 | OUTER CLUTCH DISK | Friction surface for clutch pack |
| 5838300138 | INNER CLUTCH DISK | Steel separator for clutch pack |
