Overview
The ZF 0732.040.237 COMPRESSION SPRING is a critical OEM genuine component engineered for the WG100, WG130, and WG131 transmission series. This precision spring provides the necessary preload force within the valve body assembly, ensuring proper hydraulic pressure regulation and smooth clutch engagement. As a genuine ZF part, the SKU 0732.040.237 guarantees exact dimensional tolerances and material composition required for reliable transmission operation. When installed alongside the 2095101024: TRANSMISSION HOUSING or the 2095301027: TRANSMISSION HOUSING, this spring maintains consistent force application throughout the transmission’s service life.
Symptoms of Failure
- Delayed or harsh shifting – A worn compression spring loses its ability to maintain proper valve timing, causing erratic gear changes or noticeable shift shock during acceleration.
- Transmission slipping under load – When the spring fatigues, hydraulic pressure drops, leading to clutch pack slippage during uphill driving or heavy towing.
- Intermittent neutral drops – A broken or collapsed spring can cause sudden loss of drive engagement, particularly when the transmission is hot, as the valve body fails to hold pressure.
- Erratic shift patterns – The transmission may hunt between gears or fail to upshift at proper RPM due to inconsistent spring force affecting governor pressure.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0732.040.237 |
| Type | Compression Spring |
| Wire Diameter | 2.5 mm (estimated) |
| Outer Diameter | 18.0 mm (estimated) |
| Free Length | 45.0 mm (estimated) |
| Material | Chrome Silicon Steel (DIN 17223) |
| Surface Treatment | Zinc-plated, passivated |
| Weight | 0.012 kg (estimated) |
| OEM Reference | ZF 0732.040.237 |
Compatibility
This compression spring is specifically designed for ZF WG series transmissions, including the WG100, WG130, and WG131 models. It is also compatible with certain WG180 and WG200 variants that share the same valve body architecture. Always verify the part number against your transmission’s parts catalog. For complete sealing integrity, pair this spring with the 4475280150: SCREW PLUG and the 0634304731: O-RING to prevent fluid bypass around the valve bore.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095101024 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 2095301027 | TRANSMISSION HOUSING | Rear housing section for output shaft |
| 4475280150 | SCREW PLUG | Seals hydraulic passages in valve body |
| 0634304731 | O-RING | Seals plug-to-bore interface |
| 0634306328 | O-RING | Secondary sealing for valve body ports |
| 2095301020 | GASKET | Housing-to-housing sealing layer |
| 0636011207 | HEXAGON SCREW | Fastener for housing assembly |
| 0636011188 | HEXAGON SCREW | Fastener for valve body retention |
| 0730365280 | TYPE PLATE | Identification label for transmission model |
| 0501337897 | SPEED SENSOR | Monitors output shaft rotation |
