Overview
The ZF 0636.115.296 CAP SCREW is a critical fastening component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part secures the 4699101108: HOUSING assembly, ensuring proper clamping force to maintain internal pressure and alignment of planetary gear sets. Positioned within the transmission’s main casing, this cap screw prevents fluid migration and structural loosening under high-torque conditions. The SKU 0636.115.296 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn or stripped fasteners in heavy-duty industrial drivelines.
Symptoms of Failure
- Transmission fluid seepage around housing bolts: A loose or fatigued cap screw compromises the seal between the housing and cover, leading to visible oil leaks at the joint interface.
- Abnormal gear engagement noise: When the cap screw loses torque, the 4699102172: INPUT shaft alignment shifts, causing grinding or whining sounds during gear changes.
- Vibration under load: A failing fastener allows micro-movement in the 4699103057: OUTPUT flange, transmitting vibration through the driveline during acceleration or deceleration.
- Torque converter shudder: Reduced clamping force from a degraded cap screw can destabilize the 4699001237: GK10LD clutch pack, resulting in intermittent shudder during low-speed operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0636.115.296 |
| Thread Size | M10 x 1.5 |
| Length | 30 mm |
| Head Type | Hexagon Socket (Allen) |
| Material | Alloy Steel, Grade 10.9 |
| Surface Finish | Zinc-Nickel Plated |
| Weight | 0.035 kg |
| OEM Reference | ZF 0636.115.296 |
| Torque Spec | 45 Nm (dry) |
Compatibility
This cap screw is designed exclusively for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It also applies to the WG180 and WG200 variants when used in the housing-to-cover interface. The 0636.115.296 replaces earlier fastener revisions in these units, ensuring compatibility with both standard and high-capacity torque converters. Always verify thread pitch and length against your transmission’s service manual before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699001237 | GK10LD | Clutch pack assembly for torque transfer |
| 4699101108 | HOUSING | Main transmission casing |
| 4699102172 | INPUT | Input shaft and bearing assembly |
| 4699103057 | OUTPUT | Output flange and seal carrier |
| 4699105108 | TURNTABLE BEARING | Rotary support for planetary gears |
| 0501329881 | HOUSING COVER | Seals the transmission housing |
| 0630513065 | SNAP RING | Retains bearings on shafts |
| 0634306309 | O-RING | Fluid seal between components |
| 0637885612 | BREATHER | Pressure equalization valve |
| 0769100082 | TYPE PLATE | Identification label for transmission |
