Overview
The ZF 0736.010.839 TORX SCREW is a critical OEM genuine fastener engineered for secure clamping within the valve body and housing assemblies of ZF WG100, WG130, and WG131 transmissions. This bolt ensures precise torque retention, preventing fluid bypass and maintaining hydraulic pressure integrity. As a direct replacement for the original equipment part, the SKU 0736.010.839 is designed to withstand high vibration and thermal cycling common in heavy-duty industrial drivetrains. It is typically installed alongside the 4699101136 HOUSING and the 4699301218 HOUSING to secure the transmission casing.
Symptoms of Failure
- Transmission oil seepage at housing joints: A loose or fatigued TORX screw can cause micro-gaps between the housing and cover, leading to slow oil leaks that worsen under load.
- Intermittent gear slipping under torque: When the 0736.010.839 loses clamping force, valve body alignment shifts, resulting in delayed or incomplete clutch engagement.
- Abnormal housing vibration or rattling: Worn fasteners allow the 4699309114 HOUSING COVER to move slightly, producing audible noise and accelerated wear on adjacent components.
- Hydraulic pressure fluctuations: Inconsistent bolt tension disrupts oil gallery sealing, causing erratic shift quality and potential overheating.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0736.010.839 |
| Type | TORX Drive Screw (External) |
| Thread Size | M8 x 1.25 (estimated) |
| Length | 25 mm (approx.) |
| Head Diameter | 13 mm (approx.) |
| Material | High-tensile steel, zinc-plated |
| Weight | 12 g (0.42 oz) |
| OEM Reference | ZF 0736.010.839 |
| Torque Specification | 22 Nm (16.2 ft-lb) |
Compatibility
This TORX screw is specifically designed for ZF WG-series transmissions, including the WG100, WG130, and WG131 models. It is also commonly used in the WG180 and WG200 series where identical housing fastening points exist. Always verify thread pitch and length against your specific assembly. For complete housing sealing, pair this screw with the 0636101411 CAP SCREW for adjacent mounting points.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101136 | HOUSING | Main transmission casing section |
| 4699301218 | HOUSING | Secondary housing for valve body |
| 4699309114 | HOUSING COVER | Seals the upper housing assembly |
| 0636101411 | CAP SCREW | Hex head fastener for cover retention |
| 0631302072 | CYLINDRICAL PIN | Alignment dowel for housing positioning |
| 0636302013 | SCREW PLUG | Seals oil passages in the housing |
| 0501331653 | SCREW PLUG | Magnetic drain plug for debris collection |
| 0634801038 | SEALING RING | Copper washer for plug sealing |
| 0637885613 | BREATHER | Pressure equalization vent |
| 0769100082 | TYPE PLATE | Identification label for transmission model |
