ZF 0730.110.737 WASHER | OEM Genuine Part

Overview

The ZF 0730.110.737 WASHER is a precision-engineered OEM genuine component designed to maintain critical axial clearances within heavy-duty construction machinery transmissions. This hardened steel washer sits between rotating gear sets and housing surfaces, acting as a load-bearing spacer that prevents metal-on-metal contact under extreme torque conditions. As part of the differential assembly, the 0730.110.737 washer works in concert with the 5838109012: DIFFERENTIAL to ensure smooth power distribution. Its precise thickness tolerances directly influence gear mesh patterns, making it essential for long-term transmission reliability in wheel loaders and excavators.

Symptoms of Failure

• Transmission oil leaks near differential housing: A worn 0730.110.737 washer allows excessive axial play, causing seals to misalign and weep hydraulic fluid. This is a common “ZF transmission oil leak” complaint in WG180 series units.
• Intermittent gear slipping under load: When the washer thickness degrades, the 0750117075: TAPER ROLLER BEARING loses preload, leading to momentary power loss during digging or grading operations.
• Metallic grinding noise from differential area: Flattened or cracked washers allow the 2093209023: DIFFERENTIAL gears to contact the housing, producing a distinct “rumbling” sound at low speeds.
• Increased backlash in drivetrain: Operators may notice delayed engagement when shifting between forward and reverse, indicating the washer can no longer maintain proper gear spacing.

Technical Specifications

Compatibility

This washer is primarily specified for ZF WG180 and WG200 series power shift transmissions used in construction machinery. It also fits select WG120 and WG150 variants where the differential housing uses the same bearing preload configuration. The 0730.110.737 is a direct replacement for the washer found in the 5838300626: DIFFERENTIAL HOUSING assembly. Always verify your transmission serial number before ordering, as later production runs may use a different thickness variant.

Related Components

Frequently Asked Questions

Q: Can I reuse the 0730.110.737 washer during a transmission rebuild?
A: No. This is a single-use crush washer that deforms during initial torque application. Always install a new OEM washer to maintain proper bearing preload and prevent premature differential failure.

Q: How do I know if my ZF transmission uses this specific washer thickness?
A: Measure the old washer with a micrometer. The 0730.110.737 is 2.5mm thick. If your unit uses a 2.0mm or 3.0mm variant, order the corresponding part number. Check your transmission’s parts manual for the exact specification.

Q: Will a worn washer cause damage to the taper roller bearing?
A: Yes. Insufficient washer thickness allows the 0750117075: TAPER ROLLER BEARING to operate with excessive clearance, leading to brinelling of the raceways and eventual bearing seizure. Replace both components simultaneously for best results.