Overview
The ZF 0501.317.876 COMPRESSION SPRING is a precision-engineered OEM genuine component designed for the WG100, WG130, and WG131 transmission series. This spring exerts critical axial force within the valve body or clutch pack assembly, ensuring consistent hydraulic pressure regulation and smooth gear engagement. The SKU 0501.317.876 is manufactured to ZF’s exacting tolerances, providing reliable return force after compression cycles. It works in concert with the 4108101140 HOUSING to maintain proper alignment of internal pistons and seals, while the 0501211694 MOTOR relies on this spring’s consistent tension for accurate shift timing.
Symptoms of Failure
When the ZF 0501.317.876 compression spring fatigues or breaks, operators may notice these specific failure modes:
- Delayed or harsh shifting – A worn spring fails to return the valve spool quickly, causing hesitation between gears or abrupt engagement.
- Low hydraulic pressure warnings – Insufficient spring force leads to pressure bleed in the clutch circuit, triggering dashboard alerts.
- Intermittent gear slipping under load – The spring cannot maintain clamping force on clutch packs, resulting in power loss during acceleration.
- Audible rattling from transmission housing – A broken spring fragment may rattle inside the 0501314793 COVER, indicating imminent internal damage.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.317.876 |
| Material | Chrome-silicon alloy steel (DIN 17223) |
| Wire Diameter | 3.2 mm |
| Outer Diameter | 28.5 mm |
| Free Length | 45.0 mm |
| Spring Rate | 12.5 N/mm |
| Weight | 0.018 kg |
| OEM Reference | ZF 0501.317.876 |
Compatibility
This compression spring is specifically validated for the following ZF transmission models:
- WG100 series (all variants)
- WG130 series (including WG130-1, WG130-2)
- WG131 series (WG131-3, WG131-4)
- WG180 and WG200 (when used in valve body assemblies with compatible 0501314799 BUSH dimensions)
Always verify the spring’s free length and coil count against your existing part before installation. The 0501209497 PISTON and 0501317191 CAM DISC are frequently replaced simultaneously to ensure proper spring seating.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101140 | HOUSING | Encloses valve body and spring assembly |
| 0501211694 | MOTOR | Drives hydraulic pump for pressure supply |
| 0501314793 | COVER | Seals spring chamber from contaminants |
| 0501314799 | BUSH | Guides spring compression stroke |
| 0735370299 | TAPERED ROLLER BEARING | Supports rotating shaft loads |
| 0501317874 | HOUSING | Secondary housing for clutch pack |
| 0501317875 | ROLLER | Reduces friction in cam mechanism |
| 0501209497 | PISTON | Applies force to clutch plates |
| 0501314823 | BUSH | Wear sleeve for piston bore |
| 0501317191 | CAM DISC | Controls shift timing via spring pressure |
