Overview
The ZF 0730.111.797 SHIM is a precision-engineered OEM genuine part designed to establish critical axial clearances within heavy-duty ZF transmissions used in construction machinery. This shim sits between the differential housing and bearing races, ensuring correct preload on rotating assemblies. The SKU 0730.111.797 is a factory-spec component that directly controls gear mesh depth and shaft end-play, preventing premature wear in high-torque applications. When installed alongside a 2093109029 DIFFERENTIAL, this shim guarantees that the differential assembly maintains its factory alignment under extreme loads.
Symptoms of Failure
- Excessive drivetrain backlash: A worn or collapsed shim allows the differential to shift axially, causing a noticeable “clunk” when shifting between forward and reverse gears.
- Premature bearing noise: Incorrect shim thickness leads to improper preload on the 0750117075 TAPER ROLLER BEARING, resulting in a low-frequency rumble or growl from the transmission housing during operation.
- Oil contamination from metal debris: As the shim degrades, it can shed thin metallic particles into the lubricant, visible during routine oil changes as a “silver sheen” or fine sludge.
- Intermittent gear slipping under load: Loss of axial control forces the 2093209094 DIFFERENTIAL to misalign, causing momentary power loss when climbing grades or pushing heavy material.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.111.797 |
| Material | Hardened spring steel (C67S equivalent) |
| Thickness | 1.50 mm ± 0.02 mm |
| Outer Diameter | 72.0 mm |
| Inner Diameter | 52.0 mm |
| Weight | 18 grams |
| OEM Reference | ZF 0730.111.797 |
| Surface Finish | Ground, deburred edges |
Compatibility
This shim is engineered for ZF powershift transmissions commonly found in wheel loaders, dozers, and graders. It is a direct fit for the following ZF models: WG180, WG200, WG210, and WG250. The part also integrates with the 2093309078 DIFF.HOUSING to maintain concentricity of the differential carrier. Always verify shim stack height using a dial indicator during rebuild; stacking multiple 0730.111.797 shims is not recommended without consulting the factory service manual.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109029 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential rotation under load |
| 2093209094 | DIFFERENTIAL | Secondary differential assembly |
| 2093309078 | DIFF.HOUSING | Encloses and aligns differential gears |
| 0631100223 | SPRING PIN | Secures shim and gear positions |
| 0730300820 | THRUST WASHER | Reduces axial friction on gear faces |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2097309085 | DIFFERENTIAL AXLE | Carries differential side gears |
| 5838300811 | THRUST WASHER | Controls end-play in differential carrier |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Engages with pinion for final drive |
Frequently Asked Questions
Q: Can I reuse the ZF 0730.111.797 shim after disassembly?
A: No. This shim is a single-use crush-type component. Reusing it will not restore correct preload, leading to rapid bearing failure. Always install a new OEM shim during rebuild.
Q: How do I know if the shim thickness is correct for my transmission?
A: Measure the axial clearance between the differential housing and the bearing race using a depth micrometer. The target clearance for WG200 models is 0.05–0.15 mm. If the gap exceeds 0.20 mm, install a thicker shim from the ZF 0730 series.
Q: Does this shim fit the ZF WG180 transmission?
A: Yes. The 0730.111.797 is the standard shim for WG180, WG200, and WG210 models. Always verify your transmission serial number against the ZF parts catalog before ordering.
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