Overview
The ZF 0730.100.909 ADJUSTMENT PLATE is a precision-engineered shim component designed specifically for the WG200 series transmission. This OEM genuine part plays a critical role in establishing the correct axial clearance and preload within the clutch pack assembly. By providing a precise adjustment surface, the 0730.100.909 ensures optimal gear engagement and hydraulic pressure distribution. Located between the piston and the clutch drum, this plate directly influences shift quality and torque transfer efficiency. For technicians rebuilding a WG200, verifying the condition of the 0730.100.909 is essential to avoid premature wear on surrounding components.
Symptoms of Failure
- Delayed or harsh gear engagement: When the adjustment plate wears beyond tolerance, you may experience a noticeable lag or a jarring shift when moving from neutral into drive or reverse. This is a common long-tail search query for “ZF WG200 hard shifting fix.”
- Intermittent clutch slip under load: A worn plate reduces clamping force on the clutch discs, leading to power loss during acceleration. This symptom often prompts searches for “WG200 transmission slipping under torque.”
- Metallic debris in transmission fluid: As the plate surface degrades, fine metal particles contaminate the oil. This is frequently reported as “ZF transmission oil has glitter” and indicates internal wear.
- Inconsistent hydraulic pressure readings: A distorted adjustment plate can cause fluctuating line pressure, leading to unpredictable shift patterns. This is a key diagnostic point for “WG200 pressure test failure.”
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0730.100.909 |
| Material | Hardened Spring Steel (C67S) |
| Outer Diameter | 180 mm (approx.) |
| Inner Diameter | 120 mm (approx.) |
| Thickness | 2.5 mm (nominal) |
| Weight | 0.35 kg |
| OEM Reference | ZF 0730.100.909 |
| Surface Finish | Ground, Ra 0.8 µm |
Compatibility
This adjustment plate is primarily designed for the ZF WG200 series transmissions, including the WG180 and WG200 variants used in off-highway and industrial applications. It is also compatible with certain WG150 and WG250 models that share the same clutch pack architecture. Always cross-reference your transmission serial number to confirm fitment. When replacing this plate, it is common practice to also inspect the 4644105417 DISCONNECTION and the 4644303547 OUTPUT FLANGE for wear. Additionally, the 4644303012 OUTPUT FLANGE and the 4644101121 TRANSMISSION HOUSING are frequently replaced during the same overhaul procedure.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105417 | DISCONNECTION | Separates clutch pack from shaft |
| 4644303547 | OUTPUT FLANGE | Transfers torque to driveline |
| 4644303012 | OUTPUT FLANGE | Alternative output connection |
| 4644101121 | TRANSMISSION HOUSING | Main structural casing |
| 4644301240 | TRANSMISSION HOUSING | Secondary housing variant |
| 0730365067 | TYPE PLATE | Identification tag |
| 0631311009 | GROOVED STUD | Secures housing alignment |
| 4644301286 | COVER PLATE | Seals clutch access port |
| 4644301242 | COVER SHEET | Protective shim layer |
| 0636101026 | CAP SCREW | Fastener for cover plate |
