ZF 0730.301.128 WASHER | OEM Genuine Part

Overview

The ZF 0730.301.128 WASHER is a precision-engineered OEM genuine component designed to maintain critical axial clearance within the planetary gearset of heavy-duty construction machinery transmissions. This hardened steel washer sits between the main shaft assembly and the shift system, acting as a load-bearing spacer that prevents metal-to-metal contact under high torque conditions. As part number 0730.301.128, it ensures proper gear alignment and oil flow distribution within the transmission housing. When installed alongside the 2094104412: MAIN SHAFT and the 2094106010: SHIFT SYSTEM, this washer forms a critical interface that absorbs axial thrust loads during gear engagement.

Symptoms of Failure

• Transmission oil leaks at the shaft seal area — A worn 0730.301.128 washer reduces preload on the main shaft, allowing the 2094304054: MAIN SHAFT to shift laterally, which compromises the seal lip and causes gradual fluid seepage.
• Gear slipping under load in construction equipment — When this washer loses its original thickness, the 2094206001: GEARSHIFT SHAFT cannot maintain proper engagement depth, leading to intermittent power loss during excavation or grading operations.
• Metallic grinding noise during gear changes — Excessive axial play from a collapsed washer allows the shift system components to contact the transmission housing, producing a distinct high-pitched grinding sound.
• Increased vibration in the driveline — A deformed washer creates uneven load distribution across the planetary gears, transmitting noticeable vibration through the chassis during acceleration.

Technical Specifications

Compatibility

This washer is specifically engineered for ZF WG-series powershift transmissions commonly used in wheel loaders, dozers, and graders. Based on its dimensions and application, the 0730.301.128 fits the following ZF transmission models:

• ZF WG180 (all variants)
• ZF WG200 (Series II and III)
• ZF WG210 (early production)
• ZF 4WG-200 (with planetary gearset)

Always verify the washer thickness against your transmission’s service manual, as incorrect axial clearance can damage the 2094104412: MAIN SHAFT and associated shift components.

Related Components

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