ZF 0631.607.015 SET SCREW for WG65 | OEM Genuine Part

Overview

The ZF 0631.607.015 SET SCREW is a critical OEM genuine fastening component engineered for the WG 65 and WG 180 series transmissions. This precision-machined set screw secures internal shift mechanisms and hydraulic control assemblies within the transmission housing, ensuring proper alignment under high-torque conditions. The SKU 0631.607.015 is specifically designed to withstand the vibrational loads and thermal expansion cycles common in heavy-duty industrial drivetrains. When installed correctly, this set screw maintains the positional integrity of adjacent components such as the TRANSMISSION HOUSING, preventing axial movement that could compromise gear engagement.

Symptoms of Failure

• Oil seepage at housing joints: A worn or stripped 0631.607.015 set screw can cause micro-gaps in the transmission housing, leading to gradual fluid loss and contamination risks.
• Intermittent gear slippage under load: When this fastener loses clamping force, internal shift rails may drift out of tolerance, causing delayed or incomplete gear engagement during heavy operation.
• Abnormal vibration in neutral: A loose set screw allows the shift fork assembly to rattle against the HEXAGON SCREW (0636011038), producing audible metallic chatter at idle.
• Hard shifting between ranges: Progressive wear on the set screw threads can misalign the detent mechanism, requiring excessive force to move the shift lever.

Technical Specifications

Compatibility

This OEM set screw is factory-specified for ZF WG 65 Series transmissions, commonly found in mid-range forklifts and material handlers. It also cross-references to the WG 180 Series, where it secures the shift rail assembly adjacent to the HEXAGON SCREW (0636011118) and HEXAGON SCREW (0636016015). Additional compatible models include WG 200 and select WG 120 variants used in agricultural loaders. Always verify thread pitch against your transmission housing before installation.

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