ZF 0501.298.788 REPAIR KIT | OEM Genuine Part

Overview

This ZF 0501.298.788 REPAIR KIT is a genuine OEM assembly designed to restore the sealing and pressure integrity within ZF powershift transmissions used in heavy construction machinery. The kit contains all necessary gaskets, seals, and O-rings required to overhaul the hydraulic control section of the transmission. The SKU 0501.298.788 specifically addresses the valve body and clutch piston sealing surfaces, preventing cross-contamination between oil circuits. When installed alongside the 4699001162: GK10LD clutch pack and the 4699101108: HOUSING, this repair kit ensures that the entire clutch assembly maintains correct hydraulic clamping force.

Symptoms of Failure

• External oil seepage at the transmission housing seam: Worn seals in the 0501.298.788 kit allow pressurized ATF to weep past the gasket surfaces, leaving visible drips under the machine.
• Erratic gear engagement or delayed shifting: Internal O-ring failure causes pressure loss to the clutch pistons, resulting in a “soft” shift or a complete failure to engage a specific gear range.
• Transmission overheating due to internal leakage: When the repair kit degrades, oil bypasses the valve body, generating excess heat and reducing overall hydraulic efficiency.
• Clutch slip under load: A failing seal in this kit cannot hold the required 150-200 psi against the piston, causing the clutch discs to slip during heavy digging or grading operations.

Technical Specifications

Compatibility

This genuine repair kit is engineered for ZF WG180, WG200, and WG210 series powershift transmissions commonly found in wheel loaders, excavators, and telehandlers. It also fits select 4WG-180 and 4WG-200 variants used in construction machinery from 1998 onward. The kit replaces the internal sealing elements that interface with the 4699102172: INPUT shaft housing and the 4699103058: OUTPUT flange, ensuring a leak-free connection between rotating and stationary components.

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