ZF 0501.298.794 REPAIR KIT | OEM Genuine Part

Overview

The ZF 0501.298.794 REPAIR KIT (SKU: 0501.298.794) is an OEM genuine service assembly designed to restore sealing integrity and mechanical function within ZF heavy-duty powershift transmissions. This kit contains all necessary gaskets, seals, and wear components required to overhaul the clutch pack or hydraulic control section. It is a critical element for maintaining oil pressure and preventing cross-contamination between circuits. When performing a full rebuild, this kit is often paired with a new 4699101108: HOUSING to ensure the assembly has a proper mounting surface, and the 0501329881: HOUSING COVER must be inspected for warpage during installation.

Symptoms of Failure

• External oil seepage at the transmission bell housing: Worn seals inside the repair kit allow hydraulic fluid to escape, leaving visible drips on the chassis.
• Delayed or harsh gear engagement: Loss of internal sealing pressure causes clutch packs to slip or engage abruptly, especially under load.
• Contaminated transmission fluid (dark or burnt smell): Degraded O-rings and gaskets permit debris to enter the hydraulic circuit, accelerating wear on internal components.
• Erratic shifting under moderate torque: A failing repair kit leads to inconsistent oil flow, resulting in hesitation or surging during operation.

Technical Specifications

Compatibility

This repair kit is engineered for ZF powershift transmissions commonly found in construction machinery, including the WG180, WG200, and WG211 series. It is also suitable for select WG120 and WG150 models where the clutch housing design matches the kit’s seal profile. Always verify the transmission serial number before ordering. During installation, the 0630513065: SNAP RING must be replaced to secure the piston assembly, and a new 0634306309: O-RING is required for the hydraulic feed tube to prevent bypass leaks.

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