Overview
The ZF 0730.304.940 ADJUSTMENT PLATE is a precision-machined OEM genuine component designed to maintain critical axial clearances within ZF powershift transmissions used in heavy construction machinery. This shim-like plate sits between the transmission housing and clutch pack assemblies, ensuring correct preload and hydraulic pressure distribution for smooth gear engagement. The SKU 0730.304.940 is engineered to exact factory tolerances, preventing internal component migration that can lead to premature wear. When installed alongside the 2098117002: HOUSING and 2098301052: REAR AXLE HOUS., this adjustment plate forms a critical sealing and alignment interface for the entire drivetrain assembly.
Symptoms of Failure
- Delayed or harsh gear engagement – Worn adjustment plates cause excessive clutch pack clearance, resulting in noticeable lag or jarring shifts during loader or dozer operation.
- Internal hydraulic pressure loss – A deformed plate disrupts oil flow channels, leading to low line pressure warnings and erratic transmission response under load.
- Metallic debris in transmission fluid – Surface fretting or cracking of the plate generates fine steel particles that contaminate the oil, accelerating wear on adjacent components like the 0636103300: STUD and 0637101164: HEXAGON NUT.
- Oil seepage at housing joints – Loss of plate flatness compromises the seal between the transmission case and rear axle housing, causing visible leaks around mating surfaces.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.304.940 |
| Material | Hardened alloy steel (DIN 1.7225 equivalent) |
| Outer Diameter | 185 mm |
| Inner Diameter | 120 mm |
| Thickness | 4.2 mm (selective fit tolerance ±0.05 mm) |
| Weight | 0.34 kg |
| Surface Finish | Ground, 0.8 µm Ra |
| OEM Reference | ZF 0730.304.940 |
Compatibility
This adjustment plate is primarily specified for ZF WG180 and WG200 series powershift transmissions commonly found in wheel loaders, telehandlers, and graders from manufacturers such as Liebherr, Caterpillar, and Volvo. It also fits select ZF 4WG-200 and 6WG-200 variants used in medium-duty construction machinery. Always verify the plate thickness requirement against your transmission’s service manual, as selective fit plates may vary by 0.1 mm increments.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2098117002 | HOUSING | Main transmission case housing |
| 2098301052 | REAR AXLE HOUS. | Rear axle housing assembly |
| 0636103300 | STUD | Threaded stud for housing fastening |
| 0637101164 | HEXAGON NUT | M16 hex nut for stud retention |
| 0636102566 | STUD | M12 stud for auxiliary mounting |
| 0636100960 | STUD | M10 stud for oil pan attachment |
| 0637101167 | HEXAGON NUT | M12 hex nut for brake housing |
| 0634303044 | O-RING | Seal for hydraulic passage |
| 2098317013 | BRAKE HOUSING | Left-side brake housing |
| 2098317028 | BRAKE HOUSING | Right-side brake housing |
