Overview
The ZF 0730.000.922 SHIM is a precision-engineered spacer component designed for the WG 200 series of heavy-duty transmissions. This OEM genuine part sits between the TRANSMISSION HOUSING and the output shaft assembly, where it controls axial play and maintains correct gear mesh alignment. By absorbing minor dimensional variations during assembly, the SKU 0730.000.922 ensures that bearing preload remains within factory specifications, preventing premature wear on adjacent rotating elements. This shim is critical for restoring factory tolerances during a rebuild or overhaul of the WG200 gearbox.
Symptoms of Failure
- Oil leaks at the output flange seal: When the shim wears or compresses unevenly, the OUTPUT FLANGE shifts out of alignment, causing the seal lip to lose contact and drip transmission fluid.
- Gear slipping under load: Incorrect shim thickness allows the mainshaft to float axially, reducing clutch pack engagement force and causing intermittent power loss during acceleration.
- Excessive driveline vibration: Worn shims create end-play in the shaft assembly, leading to a low-frequency shudder that is most noticeable at highway speeds.
- Hard shifting or delayed engagement: Axial movement of the shaft alters the timing of the DISCONNECTION mechanism, resulting in harsh or sluggish gear changes.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.000.922 |
| Material | Hardened spring steel (C67S) |
| Thickness | 0.92 mm (nominal) |
| Outer Diameter | 68.0 mm |
| Inner Diameter | 42.5 mm |
| Weight | 18 grams |
| OEM Reference | ZF 0730.000.922 |
| Surface Finish | Phosphate coated |
Compatibility
This shim is engineered for the ZF WG200 series transmission family. It is directly compatible with WG180, WG200, and WG210 models produced from 1998 onward. The part also fits select variants of the Ecomat 4HP and 5HP series where the output shaft housing uses the same bearing stack configuration. Always verify the existing shim thickness before ordering, as field repairs may have used alternate HEXAGON SCREW lengths that affect stack-up height.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105424 | DISCONNECTION | Separates engine torque during shifts |
| 4644303538 | OUTPUT FLANGE | Connects transmission to driveshaft |
| 0636021036 | HEXAGON SCREW | Secures housing and flange assemblies |
| 4644101224 | TRANSMISSION HOUSING | Main structural casing |
| 4644301346 | TRANSMISSION HOUSING | Alternate housing variant |
| 0730365067 | TYPE PLATE | Identification label for model specs |
| 4644106300 | SHIFT SYSTEM | Controls gear selection hydraulics |
| 4644306500 | COVER PLATE | Seals valve body access port |
| 4644159311 | SHIFT SYSTEM | Secondary shift actuator assembly |
| 4644306563 | VALVE BLOCK | Distributes hydraulic pressure |

