ZF 0730.108.555 WASHER | OEM Genuine Part

Overview

This ZF 0730.108.555 WASHER is an OEM genuine part engineered for precision load distribution within heavy-duty construction machinery transmissions. Positioned between rotating assemblies and stationary housings, this hardened steel washer prevents axial play and maintains correct gear mesh alignment. The SKU 0730.108.555 is a critical component in the clutch pack and planetary gear sets, ensuring that thrust loads are evenly transferred without distorting adjacent components. When paired with a 2094104412: MAIN SHAFT or a 2094304054: MAIN SHAFT, this washer guarantees consistent spacing for optimal hydraulic pressure flow.

Symptoms of Failure

• Transmission oil leaks around the output flange: A worn 0730.108.555 washer allows the main shaft to shift laterally, breaking the seal between the housing and rotating shaft. This causes visible drips of ATF fluid, especially after the machine has been parked overnight.
• Gear slipping under load in reverse: When the washer thickness degrades, the 2094106010: SHIFT SYSTEM cannot fully engage the clutch packs, leading to momentary power loss when backing up a loaded dump truck or excavator.
• Metallic grinding noise during gear changes: Excessive end-play from a collapsed washer causes the 2094206001: GEARSHIFT SHAFT to contact the housing, producing a high-pitched scraping sound that worsens as the transmission warms up.
• Hard shifting between forward and neutral: A deformed washer alters the stack-up height, preventing the shift forks from moving through their full travel range. Operators may need to apply excessive force to the lever.

Technical Specifications

Compatibility

This washer is a standard fitment across ZF’s WG series powershift transmissions used in construction machinery. It is commonly found in the WG180, WG200, and WG240 models, where it supports the main shaft bearing pack. The 0730.108.555 also appears in certain ZF 4WG-310 and 6WG-350 units. Always verify stack-up clearance when replacing this washer alongside a 2094306019: WASHER or 0630513070: SNAP RING to maintain proper preload.

Related Components

Frequently Asked Questions

Q: Can I reuse the old 0730.108.555 washer if it looks clean?
No. This washer is a wear item that compresses over time. Even if it appears undamaged, its thickness may have reduced by 0.1–0.2 mm, which is enough to cause clutch pack clearance issues. Always replace it with a new OEM part.

Q: Does this washer fit ZF 4WG-200 transmissions from the 1990s?
Yes. The 0730.108.555 has been used continuously in WG180, WG200, and early 4WG-200 models. However, if your transmission has a serial number prefix “4WG-200-3” or later, verify that the main shaft bearing retainer uses a 2.5 mm thick washer rather than a 3.0 mm version.

Q: What torque should I apply to the main shaft nut when installing this washer?
For the 2094104412: MAIN SHAFT, the factory specification is 180 N·m plus 90° turn. Always use a new 0630513070: SNAP RING after torquing to prevent the nut from backing off.