Overview
The ZF 0636.100.130 CAP SCREW is a precision-engineered fastener designed to secure critical housing assemblies within ZF WG100, WG130, and WG131 transmissions. This OEM genuine part ensures a leak-proof seal and structural integrity at high-torque connection points, preventing fluid migration between chambers. The SKU 0636.100.130 is machined to exact OEM tolerances, making it essential for maintaining clamping force on components like the 4699101044 HOUSING and 4699301111 HOUSING. Without this cap screw, internal pressures can destabilize shift timing and clutch pack engagement.
Symptoms of Failure
- Transmission fluid seepage around housing joints: A worn or stripped 0636.100.130 cap screw loses its sealing force, allowing ATF to weep past the 4699301054 HOUSING COVER interface.
- Audible rattling or vibration from the bell housing: When this fastener loosens, the 4699301055 COVER can shift, creating metallic chatter under load.
- Intermittent gear slippage during torque converter lockup: Reduced clamping force alters housing alignment, causing pressure loss to clutch packs.
- Visible corrosion or thread galling on removal: Exposure to heat cycles degrades the zinc-plated finish, leading to seized threads and difficult serviceability.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0636.100.130 |
| Thread Size | M10 x 1.5 (estimated) |
| Overall Length | 30 mm |
| Head Type | Hexagon socket (Allen) |
| Material | Alloy steel, zinc-plated |
| Weight | 0.025 kg |
| OEM Reference | ZF 0636.100.130 |
| Torque Specification | 45 Nm (dry) |
Compatibility
This cap screw is specifically engineered for ZF WG100, WG130, and WG131 series transmissions used in off-highway and industrial applications. It also fits select WG180 and WG200 variants where housing bolt patterns match. Always verify thread pitch and length against your existing fastener. For complete housing assembly, pair this screw with the 0634303996 O-RING and 0734307408 PROTECTION CAP to prevent contamination during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101044 | HOUSING | Main transmission casing for gear train |
| 4699301111 | HOUSING | Rear housing adapter plate |
| 4699301054 | HOUSING COVER | Seals the pump housing cavity |
| 4699301055 | COVER | Closes the valve body access port |
| 4699301014 | THREAD PROTECTIVE SHIELD | Prevents thread damage during transport |
| 0634303996 | O-RING | Provides static seal under cap screw head |
| 0734307408 | PROTECTION CAP | Covers exposed threads during storage |
| 0634309600 | SHAFT SEAL | Prevents oil leakage at rotating shafts |
| 0630502032 | RETAINING RING | Locks bearing in housing bore |
| 0637885612 | BREATHER | Equalizes internal pressure |
