Overview
The ZF 0636.101.335 CAP SCREW is a critical OEM genuine fastener engineered for the WG100, WG130, and WG131 transmission series. This cap screw secures internal housing components and shift rail assemblies, ensuring precise alignment under high torque and thermal stress. As a genuine ZF part, SKU 0636.101.335 guarantees exact thread pitch and tensile strength to prevent loosening during operation. When paired with the 2094104412: MAIN SHAFT or the 2094304054: MAIN SHAFT, this cap screw maintains the structural integrity of the gear train assembly.
Symptoms of Failure
- Transmission fluid seepage around shift tower: A worn or stripped cap screw can compromise the seal between the housing and shift cover, leading to slow oil leaks that worsen over time.
- Gear engagement hesitation or grinding: When this fastener loosens, the 2094106010: SHIFT SYSTEM components may shift out of alignment, causing delayed or rough gear changes.
- Abnormal driveline vibration: A failing cap screw allows micro-movement in the 2094206001: GEARSHIFT SHAFT assembly, producing low-frequency vibrations during acceleration.
- Intermittent neutral lockout: Loose fasteners in the shift mechanism can prevent the transmission from fully engaging neutral, especially in WG130 models.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 0636.101.335 |
| Thread Size | M10 x 1.5 |
| Overall Length | 35 mm |
| Head Type | Hexagon socket (Allen) |
| Material | Alloy steel, zinc-plated |
| Hardness Grade | 10.9 (ISO 898-1) |
| Weight | 0.032 kg |
| OEM Reference | ZF 0636.101.335 |
| Torque Specification | 45 Nm (dry) |
Compatibility
This cap screw is designed for ZF WG100, WG130, and WG131 off-highway transmissions. It also fits select WG180 and WG200 series models where the shift housing uses M10 fasteners. Always verify thread pitch and length against your service manual. For complete shift rail rebuilds, consider the 2094306053: GEARSHIFT SHAFT and the 0630513070: SNAP RING to ensure full assembly integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from input to output gears |
| 2094304054 | MAIN SHAFT | Alternate shaft for WG130 series |
| 2094106010 | SHIFT SYSTEM | Controls gear selection forks |
| 2094206001 | GEARSHIFT SHAFT | Transmits shift lever motion to forks |
| 2094306053 | GEARSHIFT SHAFT | Longer variant for WG180 models |
| 0630513070 | SNAP RING | Retains bearings on main shaft |
| 2094306019 | WASHER | Distributes load under cap screw head |
| 0732040444 | COMPRESSION SPRING | Provides detent force for shift rail |
| 0732040728 | COMPRESSION SPRING | Heavy-duty spring for WG131 |
| 2093206001 | BUSH | Guides shift shaft through housing |
Frequently Asked Questions
Q: Can I reuse the 0636.101.335 cap screw after removal?
A: ZF recommends replacing this cap screw with a new OEM part each time it is removed, as the thread-locking coating degrades after initial torque application.
Q: Does this cap screw fit the WG180 transmission?
A: Yes, it is compatible with WG180 models that use M10 x 1.5 fasteners in the shift cover. Always cross-reference your housing part number before ordering.
Q: What tools are required for installation?
A: A 6 mm hex key (Allen wrench) and a torque wrench capable of 45 Nm are needed. Apply medium-strength thread locker if the screw is not pre-coated.
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Phone: +86 158 2286 3467 |
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