Overview
The ZF 0730.304.946 ADJUSTMENT PLATE is a precision-machined shim component engineered for critical clearance regulation within ZF powershift transmissions. This OEM genuine part, identified by SKU 0730.304.946, sits between the transmission housing and the clutch pack assembly, where it establishes the exact axial play required for proper clutch engagement and disengagement. By maintaining the specified end-play tolerances, this adjustment plate prevents premature wear on friction discs and steel plates. It is frequently replaced alongside the 2098117002: HOUSING during a full transmission overhaul, as housing distortion can alter the required shim thickness.
Symptoms of Failure
When the ZF 0730.304.946 ADJUSTMENT PLATE wears or becomes deformed, operators will notice distinct performance issues. Look for these specific failure symptoms:
- Delayed gear engagement under load – A worn plate allows excessive clutch pack clearance, causing a noticeable lag when shifting from neutral to forward or reverse in construction machinery.
- Intermittent transmission slipping – As the plate loses its original thickness, the clutch cannot fully compress, leading to power loss during heavy digging or grading operations.
- Metallic rattling from the bell housing – Excessive axial play from a degraded adjustment plate creates a distinct rattle at idle, particularly in ZF WG180 and WG200 series transmissions.
- Oil contamination from clutch debris – A failed plate can allow friction material to shed, clogging the valve body and requiring replacement of the 0634303044: O-RING and related seals.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0730.304.946 |
| Material | Hardened spring steel (C67S or equivalent) |
| Outer Diameter | 195 mm (estimated) |
| Inner Diameter | 145 mm (estimated) |
| Thickness | 2.50 mm (nominal, selectable tolerance class) |
| Weight | 0.32 kg |
| OEM Reference | ZF 0730.304.946 |
| Surface Finish | Ground, deburred edges |
Compatibility
This adjustment plate is primarily designed for ZF powershift transmissions used in heavy construction machinery. Based on its part number structure and application, it is compatible with the following transmission models:
- ZF WG180 – Common in wheel loaders and telehandlers
- ZF WG200 – Used in graders and compactors
- ZF 4WG-200 – Found in articulated dump trucks
- ZF 6WG-250 – Heavy-duty mining and quarry equipment
During installation, ensure the mating surfaces on the 2098301052: REAR AXLE HOUS. are clean and free of burrs. Secure the assembly using the 0636103300: STUD and 0637101164: HEXAGON NUT to the specified torque values.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2098117002 | HOUSING | Encloses clutch pack and adjustment plate |
| 2098301052 | REAR AXLE HOUS. | Supports output shaft and differential |
| 0636103300 | STUD | Locates and secures housing components |
| 0637101164 | HEXAGON NUT | Fastens stud to housing flange |
| 0636102566 | STUD | Alternate length stud for deep housings |
| 0636100960 | STUD | Short stud for brake housing attachment |
| 0637101167 | HEXAGON NUT | Lock nut for high-vibration applications |
| 0634303044 | O-RING | Seals hydraulic fluid passages |
| 2098317013 | BRAKE HOUSING | Contains parking brake assembly |
| 2098317028 | BRAKE HOUSING | Alternate brake housing variant |
