Overview
This genuine OEM ZF 0501.313.704 SET OF SPRINGS is a critical component engineered specifically for the WG100, WG130, and WG131 transmission series. The set provides the precise spring tension required to maintain proper clutch pack engagement and hydraulic valve actuation within the gearbox. When installed alongside the 2094104412: MAIN SHAFT, these springs ensure consistent load distribution across the rotating assembly. The SKU 0501.313.704 is manufactured to ZF’s original tolerances, guaranteeing a direct fit and long service life in heavy-duty industrial applications.
Symptoms of Failure
- Delayed or harsh gear engagement: Worn springs in this set can cause sluggish shifts or abrupt clutch application, often accompanied by a noticeable “clunk” when selecting a gear.
- Intermittent loss of drive pressure: As the springs fatigue, hydraulic circuits may fail to hold pressure, leading to temporary power loss under load—a common complaint in WG130 units.
- Unusual vibration at specific RPM ranges: Deteriorated spring tension can allow the 2094304054: MAIN SHAFT to oscillate, producing a low-frequency shudder during acceleration.
- Oil contamination from metal debris: Broken spring fragments can circulate through the transmission fluid, accelerating wear on the 2094106010: SHIFT SYSTEM and other precision components.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 0501.313.704 |
| Material | High-tensile alloy spring steel (DIN 17223) |
| Wire Diameter | 4.5 mm |
| Outer Diameter | 32.0 mm |
| Free Length | 48.5 mm |
| Total Coils | 8.5 |
| Weight (set) | 0.18 kg |
| Surface Treatment | Zinc-phosphate coated |
| OEM Reference | ZF 0501.313.704 |
Compatibility
This spring set is primarily designed for ZF WG100, WG130, and WG131 series transmissions found in medium-duty trucks, buses, and off-highway equipment. It is also compatible with select WG180 and WG200 variants that share the same clutch pack architecture. When rebuilding these units, technicians often replace the 2094206001: GEARSHIFT SHAFT simultaneously to prevent uneven wear. Always verify your transmission’s serial number against ZF’s parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from clutch to gearset |
| 2094304054 | MAIN SHAFT | Secondary shaft for auxiliary gear engagement |
| 2094106010 | SHIFT SYSTEM | Hydraulic valve body and selector mechanism |
| 2094206001 | GEARSHIFT SHAFT | Mechanical linkage for gear selection |
| 2094306053 | GEARSHIFT SHAFT | Alternate shaft for synchronized models |
| 0630513070 | SNAP RING | Retains bearing assemblies on shafts |
| 2094306019 | WASHER | Thrust washer for axial load management |
| 0732040444 | COMPRESSION SPRING | Valve return spring for shift pressure control |
| 0732040728 | COMPRESSION SPRING | High-rate spring for clutch pack preload |
| 2093206001 | BUSH | Guide bushing for shift rail alignment |
Frequently Asked Questions
Q: Can I install the 0501.313.704 spring set without removing the transmission?
A: No. Accessing the spring pack requires removing the transmission from the vehicle and disassembling the clutch housing. We recommend performing this replacement during a full overhaul to avoid repeated labor costs.
Q: How do I know if my WG130 needs these springs or just the main shaft?
A: If you experience erratic shifting but the 2094304054: MAIN SHAFT shows no scoring or runout, the springs are the likely culprit. A spring tension test using a calibrated gauge will confirm fatigue.
Q: Are these springs compatible with the WG200 series?
A: Yes, but only for WG200 units built after 2012. Earlier WG200 models used a different spring diameter. Always cross-reference your transmission’s serial number with the ZF parts database before ordering.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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