Overview
The ZF 0730.304.931 ADJUSTMENT PLATE is a precision-machined shim component engineered for critical clearance regulation within ZF heavy-duty powershift transmissions. This OEM genuine part, identified by SKU 0730.304.931, sits directly between the transmission housing and the clutch or brake piston assembly. Its primary function is to establish the exact axial play required for proper clutch pack engagement and disengagement. Without this plate, internal components can shift out of tolerance, leading to premature wear. This adjustment plate is often installed alongside the 2098117002: HOUSING and the 2098301052: REAR AXLE HOUS. to ensure the entire drivetrain assembly maintains its factory-specified geometry.
Symptoms of Failure
When the ZF 0730.304.931 adjustment plate wears or becomes distorted, operators will notice distinct performance degradation. Common failure symptoms include:
- Delayed gear engagement under load – The transmission hesitates before catching a gear, particularly when shifting from neutral to drive or reverse.
- Intermittent clutch slip at high torque – The plate loses its ability to maintain proper stack height, causing the clutch packs to slip during heavy excavation or grading operations.
- Metallic rattling from the bell housing – Excessive axial clearance allows the clutch hub to oscillate, producing a distinct rattle at idle or low RPM.
- Oil contamination from friction material debris – As the plate wears unevenly, it can score the adjacent 0636103300: STUD and 0637101164: HEXAGON NUT, generating metal particles that circulate through the hydraulic system.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.304.931 |
| Material | Case-hardened alloy steel (DIN 1.7131) |
| Outer Diameter | 195.0 mm |
| Inner Diameter | 145.5 mm |
| Thickness | 2.50 mm ± 0.05 mm |
| Weight | 0.34 kg |
| Surface Finish | Ground, Ra ≤ 0.8 µm |
| OEM Reference | ZF 0730.304.931 |
Compatibility
This adjustment plate is specifically designed for ZF’s heavy-duty powershift transmission series used in construction machinery. It is a direct fit for the following transmission models:
- ZF WG180 (all variants)
- ZF WG200 (all variants)
- ZF WG210 (early production)
- ZF 4WG-200
- ZF 4WG-210
Always verify your transmission serial number before ordering. The plate is typically used in conjunction with the 2098317013: BRAKE HOUSING or 2098317028: BRAKE HOUSING for final drive assemblies.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2098117002 | HOUSING | Main transmission casing |
| 2098301052 | REAR AXLE HOUS. | Rear axle housing assembly |
| 0636103300 | STUD | Threaded fastener for housing |
| 0637101164 | HEXAGON NUT | Locking nut for stud |
| 0636102566 | STUD | Longer stud for brake housing |
| 0636100960 | STUD | Short stud for cover plate |
| 0637101167 | HEXAGON NUT | Flanged nut for high-vibration areas |
| 0634303044 | O-RING | Seal between housing and plate |
| 2098317013 | BRAKE HOUSING | Left-side brake housing |
| 2098317028 | BRAKE HOUSING | Right-side brake housing |
