Overview
The ZF 0636.105.288 CAP SCREW is a critical fastening component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part secures internal assemblies within the gearbox, ensuring that key drivetrain elements remain rigidly positioned under high torque loads. The SKU 0636.105.288 specifically functions as a retention bolt for the differential housing cover and planetary carrier end plates, preventing axial movement that could lead to gear misalignment. When installed correctly, this cap screw maintains the precise clamping force required for the 2093109029: DIFFERENTIAL and 2093309078: DIFF.HOUSING to operate without vibration-induced loosening.
Symptoms of Failure
- Transmission oil seepage at housing joints: A worn or stripped cap screw allows the differential housing cover to shift, breaking the seal and causing slow oil drips. This is a common “ZF transmission oil leak” search query for WG100 units.
- Intermittent gear slipping under load: When the 0636.105.288 loses torque retention, the 0750117075: TAPER ROLLER BEARING can experience lateral play, leading to momentary power loss during acceleration.
- Metallic rattling from the bell housing: A loose cap screw permits the 2093209094: DIFFERENTIAL assembly to vibrate against the housing, producing a distinct rattle at idle.
- Difficult gear engagement: Misalignment caused by a failed fastener forces the synchronizers to work harder, resulting in grinding shifts.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 0636.105.288 |
| Thread Size | M10 x 1.5 |
| Overall Length | 35 mm |
| Head Type | Hex Socket (12-point) |
| Material | Alloy Steel, Zinc-Plated |
| Tensile Strength | 10.9 Grade |
| Weight | 0.04 kg (0.09 lbs) |
| OEM Reference | ZF 0636.105.288 |
Compatibility
This cap screw is directly compatible with ZF WG100, WG130, and WG131 transmissions. It also fits select variants of the WG180 and WG200 series when used in the differential cover retention points. Always verify thread pitch and length against your specific housing, as the 2093309078: DIFF.HOUSING casting may vary by production year. For WG120 models, cross-reference with your existing fastener before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109029 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential rotation |
| 2093209094 | DIFFERENTIAL | Secondary torque distribution unit |
| 2093309078 | DIFF.HOUSING | Encloses differential gears |
| 0631100223 | SPRING PIN | Secures shift fork alignment |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheels |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheel hubs |
| 5838300811 | THRUST WASHER | Controls gear end-play |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear in differential set |
Frequently Asked Questions
Q: Can I reuse the 0636.105.288 cap screw after removal?
A: ZF recommends replacing this fastener with a new OEM unit each time it is removed. The zinc plating and thread locking properties degrade after initial torque application, increasing the risk of loosening in service.
Q: What torque specification should I use for installation?
A: For the WG100 and WG130 series, tighten this cap screw to 45 Nm (33 ft-lbs) plus a 90-degree turn. Always consult your specific transmission service manual, as the DIFF.HOUSING material may require adjusted values.
Q: Will this part fit a ZF WG180 transmission?
A: It is compatible with WG180 models that use the same M10x1.5 thread pattern in the differential cover. Verify your housing part number against the DIFFERENTIAL AXLE mounting points to confirm fitment.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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