Overview
The ZF 2098.328.058 ADJUSTMENT PLATE is a precision-machined shim component engineered for the final drive assembly of heavy-duty construction machinery transmissions. This OEM genuine part sits between the differential housing and the bevel gear set, where it establishes the critical backlash and preload tolerances required for smooth power transfer. The SKU 2098.328.058 is specifically designed to maintain axial positioning of the ring gear, ensuring that the BEVEL GEAR SET meshes correctly with the pinion under high torque loads. Without this adjustment plate, the entire driveline geometry shifts, leading to accelerated wear on adjacent components such as the DIFFERENTIAL and the DIFFERENTIAL assembly.
Symptoms of Failure
When the ZF 2098.328.058 adjustment plate wears or deforms, operators will notice distinct driveline disturbances. Excessive gear whine during acceleration is the most common early indicator, as the ring and pinion lose their correct mesh depth. Intermittent transmission slipping under load occurs when the plate’s thickness degrades, allowing the differential to shift axially. Metal debris in the transmission oil filter signals that the adjustment plate is fracturing, which can quickly damage the DIFF.HOUSING and surrounding bearings. A less obvious symptom is uneven tire wear on drive axles, caused by the differential’s altered preload affecting torque distribution.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2098.328.058 |
| Material | Case-hardened alloy steel (16MnCr5 equivalent) |
| Outer Diameter | 148.0 mm |
| Inner Diameter | 72.5 mm |
| Thickness | 2.50 mm (selective fit range: 2.45–2.55 mm) |
| Weight | 0.34 kg |
| Surface Hardness | 58–62 HRC |
| OEM Reference | ZF 2098.328.058 |
Compatibility
This adjustment plate is a factory-fit component for ZF WG180, WG200, and WG250 series transmissions used in wheel loaders, graders, and telehandlers. It also appears in select ZF TC-Tronic and Ecolite drivelines where the final drive uses a modular differential housing. Always verify the thickness code stamped on the original plate before replacement, as the 2098.328.058 is a selective shim. For complete driveline restoration, pair this part with a new BEVEL GEAR SET and inspect the DIFFERENTIAL for scoring on its side gears.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2098109043 | DIFFERENTIAL | Distributes torque to drive axles |
| 2098209011 | BEVEL GEAR SET | Primary reduction gear pair |
| 2098209016 | DIFFERENTIAL | Alternate differential assembly variant |
| 2095309059 | DIFF.HOUSING | Houses differential and adjustment plate |
| 0631329086 | SPRING PIN | Secures adjustment plate in position |
| 0730300820 | THRUST WASHER | Controls axial play of differential gears |
| 4482360002 | AXLE BEVEL GEAR | Output gear for final drive |
| 2095309081 | DIFFERENTIAL AXLE | Cross shaft for differential pinions |
| 5838300811 | THRUST WASHER | Heavy-duty axial bearing surface |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Side gear for differential assembly |
