Overview
The ZF 0750.108.031 LOCKING SCREW is a critical fastening component engineered specifically for the WG200 series transmission. This OEM genuine part secures the hydraulic control unit and valve body assembly within the transmission housing, preventing unwanted movement under high torque loads. The SKU 0750.108.031 is precision-machined to maintain exact clamping force, ensuring the internal oil circuits remain sealed and pressurized. When installed alongside the 4460165051 CONSOLE and the 4460368311 CONSOLE, this locking screw forms the backbone of the transmission’s structural integrity.
Symptoms of Failure
- Hydraulic oil seepage from the valve body area — A worn or stripped locking screw cannot maintain proper seal pressure, leading to slow fluid leaks around the transmission pan.
- Intermittent gear engagement hesitation — When the screw loosens, the valve body shifts slightly, causing delayed or erratic clutch pack engagement during shifting.
- Unusual metallic rattling at low RPM — A loose locking screw allows internal components to vibrate against the housing, producing a distinct knocking sound during deceleration.
- Torque converter shudder under load — Insufficient clamping force disrupts oil flow to the torque converter, resulting in vibration during acceleration from a stop.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0750.108.031 |
| Material | Case-hardened alloy steel (DIN 1.6580) |
| Thread Size | M10 x 1.5 mm |
| Overall Length | 45 mm |
| Head Type | Hex socket (12-point) |
| Weight | 0.042 kg |
| OEM Reference | ZF 0750.108.031 |
| Torque Specification | 45 Nm ± 5 Nm |
Compatibility
This locking screw is a direct fit for the ZF WG180, WG200, and WG210 series transmissions. It is also used in select ZF WG150 variants with hydraulic valve body assemblies. Always verify the thread pitch and length against your transmission’s service manual. For complete assembly, pair this screw with the 0636011429 HEXAGON SCREW and the 0730100365 WASHER to ensure proper load distribution and vibration resistance.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460165051 | CONSOLE | Mounting bracket for valve body alignment |
| 4460368311 | CONSOLE | Secondary support bracket for hydraulic unit |
| 0636011429 | HEXAGON SCREW | Fastener for console-to-housing attachment |
| 0730100365 | WASHER | Load-spreading washer for screw assemblies |
| 4644105418 | DISCONNECTION | Clutch disconnection valve component |
| 4644305041 | ADAPTER | Hydraulic line adapter for oil circuits |
| 4460068159 | AXLE DRIVE | Output shaft drive gear assembly |
| 4460168651 | INPUT FLANGE | Input shaft coupling flange |
| 4460368318 | FLANGE | Output flange for driveline connection |
| 4460368317 | DUST PROTECTION | Sealing cover for flange assembly |
