Overview
The ZF 0636.010.112 HEXAGON SCREW is a critical fastening component engineered specifically for the WG 65 transmission series. This OEM genuine part secures the differential assembly within the housing, ensuring precise alignment under high-torque conditions. As a structural bolt, it withstands extreme shear forces and vibration, maintaining the integrity of the drivetrain. The SKU 0636.010.112 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn or damaged fasteners in heavy-duty industrial transmissions.
Symptoms of Failure
- Oil seepage around the differential housing: A loose or fatigued hexagon screw can compromise the seal between the DIFF.HOUSING and the transmission casing, leading to visible fluid leaks.
- Abnormal gear noise during operation: When the screw fails to maintain clamping force, the DIFFERENTIAL assembly shifts, causing whining or grinding sounds from the gear set.
- Intermittent power loss or slipping: A broken or stripped hexagon screw allows the DIFFERENTIAL to misalign, resulting in uneven torque distribution and reduced traction.
- Excessive play in the driveline: Wear on this fastener creates backlash, felt as a clunk when shifting between forward and reverse gears.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0636.010.112 |
| Type | Hexagon Screw (Bolt) |
| Material | High-Tensile Steel (Grade 10.9) |
| Thread Size | M12 x 1.75 |
| Length | 45 mm |
| Head Style | Hexagon (Flanged) |
| Weight | 0.08 kg (approx.) |
| OEM Reference | ZF 0636.010.112 |
| Finish | Zinc-Plated (Corrosion Resistant) |
Compatibility
This hexagon screw is a standard fastener used across multiple ZF heavy-duty transmission models. While it is a primary component in the WG 65 Series, it also fits the WG180, WG200, and WG250 series where the differential assembly shares identical bolt patterns. Always verify thread pitch and length against your specific transmission’s service manual. For related differential components, consider the TAPER ROLLER BEARING which supports the differential shaft, and the DIFFERENTIAL AXLE that mates with this screw.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095109011 | DIFFERENTIAL | Distributes torque between wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports rotating differential shaft |
| 2095209037 | DIFFERENTIAL | Secondary differential assembly |
| 2095309059 | DIFF.HOUSING | Encloses differential gears |
| 0631329086 | SPRING PIN | Locks gear alignment |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axles |
| 2095309081 | DIFFERENTIAL AXLE | Connects differential to wheels |
| 5838300811 | THRUST WASHER | Prevents gear end-play |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear in differential set |
