Overview
The ZF 0730.001.928 SHIM is a precision-engineered OEM genuine part designed for critical clearance adjustment within ZF heavy-duty transmissions. This thin, hardened steel component sits between the TRANSMISSION HOUSING and bearing assemblies to establish correct axial play and gear mesh depth. By compensating for manufacturing tolerances, the SKU 0730.001.928 ensures optimal load distribution across planetary gear sets. In construction machinery applications, this shim directly influences clutch pack engagement timing and overall drivetrain durability. Without proper shimming, internal components experience accelerated wear patterns that compromise transmission service life.
Symptoms of Failure
- Excessive gear backlash during load changes – When the 0730.001.928 shim compresses or corrodes, you may notice a delayed “clunk” when shifting between forward and reverse in wheel loaders or excavators.
- Low-frequency vibration at operating temperature – Worn shimming causes uneven bearing preload, producing a rhythmic hum that intensifies under full throttle in WG-series transmissions.
- Intermittent clutch slip under heavy torque – A degraded shim alters piston stroke distance, leading to momentary power loss when the machine digs or pushes against resistance.
- Metallic debris in transmission fluid analysis – Flattened shim material generates fine steel particles that appear during routine oil sampling, indicating imminent internal clearance failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 0730.001.928 |
| Material | Hardened spring steel (C67S grade) |
| Thickness | 0.50 mm (nominal) |
| Outer Diameter | 82.0 mm |
| Inner Diameter | 62.5 mm |
| Weight | 12 grams |
| OEM Reference | ZF 0730.001.928 |
| Surface Finish | Ground, deburred edges |
Compatibility
This shim is engineered for ZF’s WG-series powershift transmissions commonly found in construction machinery. It directly fits the WG180, WG200, and WG210 models used in wheel loaders, dozers, and telehandlers. The 0730.001.928 also appears in select ZF 4WG-310 and 6WG-200 variants. For proper installation, always pair this shim with a new SCREW PLUG and inspect the HOUSING bore for scoring. In high-hour rebuilds, replacing the HOUSING assembly is recommended to ensure the shim seats correctly against fresh bearing surfaces.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094101017 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 2094301069 | HOUSING | Intermediate housing for clutch pack |
| 2094298054 | HOUSING | Rear housing with bearing bore |
| 0636302008 | SCREW PLUG | Seals hydraulic passage ports |
| 0634801165 | SEALING RING | Prevents oil bypass at joints |
| 0635460022 | BALL | Check valve element in oil circuit |
| 2094301071 | COVER | Closes access opening to valve body |
| 2094301030 | GASKET | Seals cover-to-housing interface |
| 0750111371 | SHAFT SEAL | Contains oil at output shaft |
| 0634303085 | O-RING | Static seal for hydraulic fittings |
