Overview
The ZF 0730.112.001 SHIM is a precision-engineered spacer component designed to establish exact axial clearances within heavy-duty ZF transmission assemblies. This OEM genuine part, identified by SKU 0730.112.001, sits between the differential housing and the bearing race to control end-play and preload on rotating gear sets. In construction machinery transmissions, proper shim selection prevents gear misalignment and ensures even load distribution across the drivetrain. The 0730.112.001 shim works in concert with the 5838109012: DIFFERENTIAL to maintain consistent tooth contact patterns under high torque conditions.
Symptoms of Failure
- Excessive differential backlash — When the 0730.112.001 shim wears or compresses beyond tolerance, operators notice a clunking sound during direction changes, particularly in wheel loaders and excavators.
- Premature bearing wear — A collapsed shim allows the 0750117075: TAPER ROLLER BEARING to operate outside its designed preload range, generating metallic debris in the transmission oil.
- Oil seepage at the differential housing interface — Worn shims alter the housing alignment, breaking the seal between the 5838300626: DIFFERENTIAL HOUSING and the main transmission case.
- Vibration under load — Incorrect axial clearance from a degraded shim causes the 2093209023: DIFFERENTIAL assembly to oscillate, transmitting harsh vibrations through the chassis during digging or grading operations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 0730.112.001 |
| Material | Case-hardened alloy steel (DIN 1.3505 equivalent) |
| Outer Diameter | 112 mm |
| Inner Diameter | 73 mm |
| Thickness | 1.00 mm (nominal) |
| Weight | 0.042 kg |
| Surface Finish | Ground, Ra ≤ 0.8 µm |
| OEM Reference | ZF 0730.112.001 |
| Hardness | 58-62 HRC |
Compatibility
This shim is dimensionally validated for use in ZF WG180, WG200, and WG310 series powershift transmissions commonly installed in construction machinery. It also fits select ZF 4WG-200 and 5WG-300 drivelines where the differential carrier uses a 112 mm outer race seat. Always verify the existing shim stack thickness before replacement; the 0730.112.001 is often paired with the 5838300811: THRUST WASHER to achieve final clearance specifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between axles while allowing speed differentiation |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads on the differential carrier |
| 2093209023 | DIFFERENTIAL | Secondary differential unit for multi-axle drive configurations |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses and supports differential gears and bearings |
| 0631329088 | SPRING PIN | Secures shim and washer alignment during assembly |
| 5838300811 | THRUST WASHER | Provides low-friction axial surface between rotating gears |
| 5838300721 | AXLE BEVEL GEAR | Transfers power from differential to axle shafts at 90° angle |
| 5838300633 | AXLE | Transmits rotational force from differential to wheel hubs |
| 5838300753 | THRUST WASHER | Controls end-play in the bevel gear set |
| 5838300818 | THRUST WASHER | Provides axial support for the differential side gears |
Frequently Asked Questions
Q: Can I reuse the 0730.112.001 shim during a differential rebuild?
No. ZF service manuals mandate replacement of all shims during any differential or bearing overhaul. The shim compresses plastically during initial torqueing and will not provide accurate preload if reused.
Q: How do I measure the correct shim thickness for my transmission?
Use a depth micrometer to measure the bearing bore depth in the differential housing, then subtract the bearing width. The 0730.112.001 is a 1.00 mm shim; stack multiple shims if the calculated clearance exceeds 1.00 mm.
Q: Is this shim compatible with ZF 4WG-180 transmissions?
Yes. The 0730.112.001 fits the differential bearing seat on 4WG-180, 4WG-200, and 5WG-300 models. Always cross-reference your housing part number against the 5838300626: DIFFERENTIAL HOUSING to confirm compatibility.
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