Overview
The ZF 0730.107.839 SHIM is a precision-engineered OEM genuine part designed to establish critical axial clearances within heavy-duty ZF transmissions. This shim sits between the main shaft assembly and the gear train, compensating for manufacturing tolerances to ensure optimal gear mesh and load distribution. The SKU 0730.107.839 is specifically calibrated for use in construction machinery transmissions, where vibration and high torque demand exacting spacing. When installed alongside a 2094104412 MAIN SHAFT, this shim prevents axial play that would otherwise accelerate wear on adjacent components.
Symptoms of Failure
When the ZF 0730.107.839 shim wears or deforms, operators may notice distinct operational issues. Transmission oil leaks from the bell housing often occur as the shim loses thickness, allowing the main shaft to shift and compromise the seal. Gear slipping under load is another common symptom, particularly in lower gears, as the clearance between the 2094304054 MAIN SHAFT and the gear hub increases. Abnormal grinding noises during clutch engagement indicate that the shim has collapsed, causing metal-on-metal contact. Finally, erratic shifting patterns in the 2094106010 SHIFT SYSTEM can be traced back to improper shim thickness altering the fork travel limits.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.107.839 |
| Material | Hardened spring steel (C67S) |
| Outer Diameter | 68.5 mm |
| Inner Diameter | 42.0 mm |
| Thickness | 0.50 mm |
| Weight | 12 grams |
| OEM Reference | ZF 0730.107.839 |
| Surface Finish | Ground, deburred edges |
Compatibility
This shim is engineered for ZF power-shift transmissions commonly used in wheel loaders, dozers, and excavators. It is a direct fit for the WG180, WG200, and WG210 series. The 0730.107.839 also appears in certain 4WG-200 and 6WG-200 variants. For precise installation, always pair this shim with the 2094206001 GEARSHIFT SHAFT to ensure correct end-play tolerances.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from engine to gear cluster |
| 2094304054 | MAIN SHAFT | Secondary shaft for reverse gear engagement |
| 2094106010 | SHIFT SYSTEM | Hydraulic-mechanical assembly for gear selection |
| 2094206001 | GEARSHIFT SHAFT | Transmits shift fork motion to synchronizers |
| 2094306053 | GEARSHIFT SHAFT | Alternate shaft for high-range gear sets |
| 0630513070 | SNAP RING | Secures shim and shaft in axial position |
| 2094306019 | WASHER | Distributes clamping load from retaining nut |
| 0732040444 | COMPRESSION SPRING | Provides preload to shift rail detent |
| 0732040728 | COMPRESSION SPRING | Higher-rate spring for heavy-duty shift forks |
| 2093206001 | BUSH | Wear surface for gearshift shaft rotation |
Frequently Asked Questions
Q: Can I reuse the ZF 0730.107.839 shim during a rebuild?
A: No. This shim is a single-use component. It compresses and work-hardens during initial assembly. Reusing it will result in incorrect clearance and premature failure of the 2094104412 MAIN SHAFT bearings.
Q: How do I measure the correct shim thickness for my WG200 transmission?
A: Use a depth micrometer to measure the gap between the main shaft shoulder and the gear hub face. Subtract 0.05 mm for oil film clearance. The 0730.107.839 is 0.50 mm thick; if your gap is different, stack multiple shims or select a different thickness from the ZF range.
Q: Will a worn shim cause damage to the shift system?
A: Yes. Excessive axial play from a collapsed shim forces the 2094106010 SHIFT SYSTEM forks to over-travel, bending shift rails and damaging synchronizer hubs. Replace the shim immediately if you detect any of the failure symptoms listed above.
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