Overview
The ZF 0732.042.260 COMPRESSION SPRING is a critical load-bearing component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part provides precise axial force within the valve body and clutch pack assemblies, ensuring consistent hydraulic pressure regulation during gear shifts. The SKU 0732.042.260 is manufactured to ZF’s exacting tolerances to maintain proper spring rate and fatigue life under high-cycle industrial conditions. When paired with a 5838109012: DIFFERENTIAL, this spring helps stabilize torque distribution across the driveline.
Symptoms of Failure
- Delayed or harsh shifting — A worn compression spring loses its calibrated force, causing sluggish engagement or abrupt gear changes in WG-series transmissions.
- Intermittent clutch slip under load — When the spring cannot maintain adequate clamping pressure, the transmission may momentarily lose power transfer during uphill or heavy-load operation.
- Erratic hydraulic pressure readings — A fatigued spring allows valve spools to float, resulting in fluctuating line pressure that triggers fault codes on diagnostic equipment.
- Transmission overheating — Prolonged internal slippage from insufficient spring force generates excess heat, often accompanied by burnt fluid odor.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0732.042.260 |
| Material | Chrome-silicon alloy steel (DIN 17223) |
| Wire Diameter | 4.2 mm |
| Outer Diameter | 26.0 mm |
| Free Length | 42.5 mm |
| Spring Rate | 85 N/mm |
| Surface Treatment | Zinc-phosphate with oil coating |
| Weight | 0.028 kg |
| OEM Reference | ZF 0732.042.260 |
Compatibility
This compression spring is specifically designed for ZF WG100, WG130, and WG131 powershift transmissions used in off-highway vehicles, agricultural tractors, and material handling equipment. It also applies to select WG180 and WG200 variants that share the same valve body architecture. For complete differential rebuilds, always inspect the 0750117075: TAPER ROLLER BEARING and 2093209023: DIFFERENTIAL for wear. The 5838300626: DIFFERENTIAL HOUSING must be free of cracks when replacing this spring.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads |
| 2093209023 | DIFFERENTIAL | Secondary torque distribution unit |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears |
| 0631329088 | SPRING PIN | Secures spring in valve bore |
| 5838300811 | THRUST WASHER | Reduces axial friction |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 5838300633 | AXLE | Rotates wheel hubs |
| 5838300753 | THRUST WASHER | Controls gear end-play |
| 5838300818 | THRUST WASHER | Prevents gear-to-housing contact |
Frequently Asked Questions
Q: Can I reuse the old compression spring during a rebuild?
A: No. ZF recommends replacing the 0732.042.260 spring whenever the valve body is disassembled, as repeated compression cycles cause permanent set that alters shift timing.
Q: How do I verify the spring is seated correctly?
A: Measure the installed height against the service manual specification (typically 32.0 mm ±0.5 mm under preload). Use a depth micrometer to confirm the spring is not cocked in its bore.
Q: Does this spring work with aftermarket valve body kits?
A: Only when the aftermarket kit explicitly lists WG100/WG130/WG131 compatibility. Using this spring with non-ZF valve bodies may cause pressure deviations due to different bore depths.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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