ZF 0501.320.414 WASHER | OEM Genuine Part

Overview

The ZF 0501.320.414 WASHER is a precision-engineered OEM genuine shim component designed to maintain critical axial clearances within ZF construction machinery transmissions. Positioned between the HOUSING and rotating clutch assemblies, this hardened steel washer prevents metal-on-metal contact while ensuring correct preload on planetary gear sets. As a load-bearing spacer, the SKU 0501.320.414 directly influences gear mesh alignment and hydraulic pressure distribution. When installed alongside the MOTOR assembly, it stabilizes torque transfer during heavy excavation cycles.

Symptoms of Failure

• Transmission oil leaks near bell housing: Worn 0501.320.414 washers allow axial play, causing seal distortion and fluid seepage around the COVER interface.
• Gear slipping under load in reverse: Reduced washer thickness alters clutch pack clearance, leading to delayed engagement during backhoe operations.
• Metallic grinding from planetary section: Flattened or cracked washers permit ROLLER BEARING misalignment, generating audible debris contamination.
• Erratic shift timing in WG series: Incorrect washer stack height disrupts hydraulic modulation, causing harsh or delayed gear changes.

Technical Specifications

Compatibility

This washer is integral to ZF WG180, WG200, and WG310 transmission families used in wheel loaders, excavators, and telehandlers. It fits specifically in the clutch pack C1/C2 positions and the PTO drive hub. Always verify stack height using the HOUSING and ROLLER assembly tolerances. For WG211 models, pair with the PISTON and COMPRESSION SPRING to restore original backlash specifications.

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