ZF 4699.397.031 BUSH | OEM Genuine Part

Overview

The ZF 4699.397.031 BUSH is a precision-engineered wear component designed to maintain critical alignment within heavy-duty construction machinery transmissions. This OEM genuine part acts as a sacrificial bearing surface, reducing friction between rotating shafts and stationary housings in high-torque applications. Located in the gear train assembly, the SKU 4699.397.031 ensures consistent load distribution and prevents metal-on-metal contact that would otherwise degrade transmission efficiency. When paired with the 4699003064 GK20 II gear kit, this bushing supports smooth power transfer under extreme operational stress.

Symptoms of Failure

• Transmission gear slipping under load: Worn bushings allow shaft play, causing intermittent disengagement of gear teeth during heavy excavation or lifting operations.
• Metallic grinding noise from transmission housing: Degraded bushing material permits shaft-to-housing contact, producing audible scraping sounds during rotation.
• Oil contamination with bronze or steel particles: Flaking bushing material circulates through the hydraulic system, often visible as glitter in transmission fluid samples.
• Vibration in neutral or low-speed operation: Excessive radial clearance from bushing wear creates harmonic oscillations detectable through the chassis.

Technical Specifications

Compatibility

This bushing is engineered for ZF WG series transmissions commonly found in wheel loaders, telehandlers, and excavators. Primary compatible models include the WG180, WG200, and WG210 series. It also fits select 4WG200 and 5WG210 variants used in construction machinery from manufacturers like Liebherr, Caterpillar, and Volvo CE. For proper installation, ensure the 4699101109 HOUSING is inspected for wear, as housing distortion accelerates bushing failure. The 4699102149 INPUT shaft and 4699103030 OUTPUT shaft must be checked for scoring before bushing replacement.

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