Overview
The ZF 0730.108.084 SHIM is a precision-engineered OEM genuine part designed to establish critical axial clearances within ZF heavy-duty powershift transmissions. This thin, hardened steel shim sits between the main shaft assembly and the gear train, compensating for manufacturing tolerances and ensuring correct preload on bearings and gears. By maintaining exact spacing, the SKU 0730.108.084 prevents unwanted movement of rotating components, directly influencing shift quality and torque transfer. In construction machinery transmissions, this shim is often replaced during a full overhaul alongside the 2094104412: MAIN SHAFT and the 2094304054: MAIN SHAFT to restore factory tolerances.
Symptoms of Failure
- Excessive axial play in the main shaft: When the shim wears or deforms, you may detect noticeable end-float when rotating the input yoke, leading to “ZF transmission main shaft wobble” and uneven gear loading.
- Hard or delayed gear engagement: Worn shim thickness alters the position of the 2094106010: SHIFT SYSTEM, causing “powershift transmission hesitation” or incomplete clutch pack engagement.
- Metallic grinding noise from the transmission housing: Insufficient shim clearance allows gear teeth to contact the case, producing a distinct “ZF transmission grinding sound” under load.
- Oil contamination with fine metal particles: Accelerated wear from incorrect shim spacing generates debris, often flagged during “construction machinery transmission oil analysis.”
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.108.084 |
| Material | Hardened Spring Steel (C67S equivalent) |
| Outer Diameter | 68.0 mm |
| Inner Diameter | 42.5 mm |
| Thickness | 1.50 mm (selective fit) |
| Weight | 0.018 kg |
| OEM Reference | ZF 0730.108.084 |
| Hardness | HRC 45-50 |
Compatibility
This shim is primarily used in ZF WG series powershift transmissions common in construction machinery. Based on its dimensions and application, the 0730.108.084 fits the following models: WG180, WG200, WG210, WG120, and WG150. It is also found in certain ZF 4WG-200 and 4WG-310 variants used in wheel loaders, dozers, and graders. Always verify stack-up height during installation; pairing this shim with a new 2094206001: GEARSHIFT SHAFT ensures correct shift fork positioning.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from engine to gear train |
| 2094304054 | MAIN SHAFT | Secondary shaft for countershaft drive |
| 2094106010 | SHIFT SYSTEM | Controls clutch pack engagement |
| 2094206001 | GEARSHIFT SHAFT | Transmits shift lever motion to forks |
| 2094306053 | GEARSHIFT SHAFT | Secondary shift rail for range selection |
| 0630513070 | SNAP RING | Retains shaft bearings in housing |
| 2094306019 | WASHER | Thrust washer for axial load distribution |
| 0732040444 | COMPRESSION SPRING | Provides preload on shift detent mechanism |
| 0732040728 | COMPRESSION SPRING | Returns shift rail to neutral position |
| 2093206001 | BUSH | Wear surface for shift shaft rotation |
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