ZF 0730.107.853 SHIM | OEM Genuine Part

Overview

This genuine ZF 0730.107.853 SHIM is a precision-engineered spacer component designed for use within heavy-duty construction machinery transmissions. Its primary function is to establish exact axial clearances between rotating assemblies, ensuring proper preload and alignment of gear trains and shafts. By maintaining these critical tolerances, the shim prevents metal-on-metal contact and reduces vibration during operation. The SKU 0730.107.853 is an OEM genuine part, guaranteeing a factory-specified fit that aftermarket alternatives often fail to match. It sits directly between the main shaft assembly and the housing, acting as a sacrificial wear surface that protects more expensive transmission components from premature failure.

Symptoms of Failure

• Excessive axial play in the driveline: When the shim wears beyond tolerance, operators will notice a distinct clunking or knocking sound when shifting between forward and reverse gears. This “gear backlash” symptom is a clear indicator that the 0730.107.853 has compressed or eroded.
• Low-frequency vibration at idle: A worn shim allows the main shaft to oscillate slightly, transmitting a deep rumble through the chassis that intensifies under load. This “transmission vibration at idle” symptom is often misdiagnosed as a bearing issue.
• Premature seal failure and fluid seepage: As the shim loses thickness, the shaft shifts out of its designed position, putting uneven pressure on the output shaft seal. This leads to “transmission oil leak near the bell housing” — a common long-tail search query for construction equipment operators.
• Hard shifting or gear hang-up: Misalignment caused by a degraded shim can prevent the shift system from fully engaging gears, resulting in “transmission hard shifting in excavator” complaints during demanding operations.

Technical Specifications

Compatibility

This shim is engineered for ZF’s WG series powershift transmissions commonly found in wheel loaders, graders, and telescopic handlers. It is a direct fit for the WG180 and WG200 series, as well as the older WG150 and WG160 models. It also applies to the 4WG-200 and 6WG-200 variants used in heavy construction machinery. Always verify your transmission serial number before ordering, as shim thickness requirements vary by assembly stack-up.

Related Components

During a full transmission rebuild, this shim is typically replaced alongside the main shaft and shift system components. For optimal performance, always inspect the 2094104412 MAIN SHAFT for wear at the shim contact face. The 2094304054 MAIN SHAFT is an alternative shaft variant used in later production runs. The 2094106010 SHIFT SYSTEM and 2094206001 GEARSHIFT SHAFT should also be checked for alignment issues caused by shim degradation.

Frequently Asked Questions

Q: Can I reuse the old shim if it looks clean?
A: No. Shims are single-use components. Even if visually intact, the material may have work-hardened or compressed beyond specification. Always install a new 0730.107.853 during any main shaft or bearing replacement.

Q: How do I measure the correct shim thickness for my transmission?
A: Use a depth micrometer to measure the distance from the housing face to the bearing race, then subtract the target end-play (typically 0.05-0.15 mm for WG series). The 0730.107.853 is a 1.50 mm baseline shim; stack multiple shims if needed, but never exceed three.

Q: Will this shim fit the ZF 4WG-200 transmission?
A: Yes, the 0730.107.853 is compatible with the 4WG-200 and 6WG-200 models. However, always cross-reference your transmission’s parts manual, as some early 4WG-200 units used a 1.20 mm shim (part 0730.107.851).