Overview
The ZF 0636.611.136 STUD is a precision-engineered, OEM genuine fastening component designed for secure mounting within ZF heavy-duty transmissions. This stud serves as a critical locating and clamping element, ensuring that adjacent transmission housings and covers remain perfectly aligned under high torque and vibration loads. As an original equipment part, the SKU 0636.611.136 guarantees exact thread pitch and tensile strength, preventing loosening over time. It is commonly found in the main casing assembly where it anchors the 2094301036: HOUSING and the 2094298057: HOUSING sections together, maintaining structural integrity during operation.
Symptoms of Failure
- Transmission housing misalignment: A worn or stripped 0636.611.136 stud can cause the 2094101012: TRANSMISSION HOUSING to shift, leading to uneven gear wear and increased noise.
- Oil seepage at casing joints: When this stud loses clamping force, gaps form between mating surfaces, allowing hydraulic fluid to escape. This is a common “ZF transmission oil leak from stud location” issue.
- Vibration during gear engagement: A loose stud allows the 2094301071: COVER to micro-move, producing a distinct shudder under load.
- Difficult bolt torquing: If the stud threads are damaged, you may notice inconsistent resistance when installing companion fasteners, indicating imminent failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0636.611.136 |
| Material | High-tensile alloy steel, zinc-plated |
| Thread Size | M16 x 1.5 (estimated) |
| Overall Length | 85 mm (estimated) |
| Weight | 0.12 kg (estimated) |
| OEM Reference | ZF 0636.611.136 |
| Hardness Class | 10.9 |
Compatibility
This genuine ZF stud is engineered for use in the following transmission model families: WG180, WG200, and WG250 series. It is also compatible with certain Ecomat 4HP and 6HP variants where the main housing requires stud-type retention. Always verify thread pitch against your specific assembly drawing. The stud works in conjunction with the 2094301036: HOUSING and the 2094298057: HOUSING to form a rigid transmission shell.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094101012 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 2094301036 | HOUSING | Intermediate housing section |
| 2094298057 | HOUSING | Rear housing adapter |
| 2094301071 | COVER | Access cover for valve body |
| 0750111371 | SHAFT SEAL | Prevents fluid leakage at output shaft |
| 0634303085 | O-RING | Seals hydraulic passages |
| 2094301030 | GASKET | Mating surface seal between housings |
| 0631306670 | CYLINDRICAL PIN | Alignment dowel for precise assembly |
| 0636011356 | HEXAGON SCREW | Fastener for cover attachment |
| 4475280060 | SCREW PLUG | Closes oil drain or test ports |
