Overview
The ZF 0501.319.237 COMPRESSION SPRING is a critical OEM genuine component engineered for precise load control within the WG100, WG130, and WG131 transmission series. This spring sits inside the valve body or clutch pack assembly, where it provides the necessary return force to maintain proper hydraulic pressure and gear engagement. The SKU 0501.319.237 is manufactured to ZF’s exacting tolerances, ensuring consistent performance under high-cycle industrial loads. When paired with a properly sealed 4108101153: HOUSING, this spring prevents unwanted movement of internal pistons, directly influencing shift quality and torque transfer efficiency.
Symptoms of Failure
- Delayed or harsh gear engagement: A worn 0501.319.237 spring loses its compressive force, causing sluggish shifts or abrupt clutch application, especially during cold starts.
- Intermittent transmission slipping under load: When the spring fatigues, it cannot maintain adequate pressure on the valve spool, leading to momentary power loss during acceleration.
- Unusual metallic pinging from the transmission sump: A broken or cracked compression spring can produce a distinct tapping noise as it rattles inside the 0501212152: MOTOR assembly.
- Hydraulic fluid contamination: Fragments from a fractured spring can circulate through the system, damaging the 0501314793: COVER seal surfaces and accelerating wear on adjacent components.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.319.237 |
| Material | Chrome-silicon alloy steel (DIN 17223) |
| Wire Diameter | 3.5 mm |
| Outer Diameter | 22.0 mm |
| Free Length | 48.5 mm |
| Spring Rate | 45 N/mm |
| Weight | 0.035 kg |
| OEM Reference | ZF 0501.319.237 |
| Surface Treatment | Phosphate coated, oiled |
Compatibility
This compression spring is directly compatible with the following ZF transmission models: WG100, WG130, and WG131. It also fits select variants of the WG180 and WG200 series when used in conjunction with the correct 0735370299: TAPERED ROLLER BEARING assembly. Always verify the spring’s free length against your existing component before installation, as aftermarket housings may alter the required preload. For applications requiring a different spring rate, consider the 0501317876: COMPRESSION SPRING which offers a higher load capacity for heavy-duty cycles.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101153 | HOUSING | Encloses valve body and spring assembly |
| 0501212152 | MOTOR | Hydraulic actuation unit for shift control |
| 0501314793 | COVER | Seals transmission case, retains fluid pressure |
| 0735370299 | TAPERED ROLLER BEARING | Supports rotating shafts under axial load |
| 0501317874 | HOUSING | Alternate housing for WG130 series |
| 0501317875 | ROLLER | Reduces friction in clutch pack assembly |
| 0501298376 | PISTON | Converts hydraulic pressure to mechanical force |
| 0501317876 | COMPRESSION SPRING | Heavy-duty spring for high-torque applications |
| 0501314823 | BUSH | Wear sleeve for valve spool alignment |
| 0501314929 | CAM DISC | Timing control for shift sequence |
