Overview
The ZF 4108.322.031 SWASH PLATE is a critical hydraulic control component within the pump housing of ZF powershift transmissions. This OEM genuine part modulates fluid flow to engage and disengage clutches, directly influencing gear selection and torque distribution. Machined from high-strength alloy steel, the swash plate operates under extreme pressure cycles. The SKU 4108.322.031 is precision-ground to exact OEM tolerances, ensuring consistent hydraulic response in heavy-duty construction machinery. It sits adjacent to the 4108101112: HOUSING and interfaces with the 4108301304: BEARING COVER to maintain axial alignment.
Symptoms of Failure
- Erratic gear engagement or delayed shifting — A worn swash plate surface causes inconsistent hydraulic pressure, leading to hesitation when moving from neutral to drive. This is a common search query for “ZF transmission shifting problems.”
- Oil leaks around the pump housing — Cracks or scoring on the 4108.322.031 plate allow pressurized fluid to bypass seals. Look for drips near the 4108201177: HOUSING interface.
- Transmission overheating — Increased internal friction from a damaged swash plate generates excess heat, often flagged in “ZF WG200 overheating” searches.
- Loss of power under load — Slipping clutches due to reduced hydraulic flow from a worn plate result in poor torque transfer during excavation or grading.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4108.322.031 |
| Material | Case-hardened alloy steel (16MnCr5 equivalent) |
| Surface Hardness | 58-62 HRC |
| Outer Diameter | 142 mm (estimated) |
| Thickness | 18.5 mm (estimated) |
| Weight | 1.2 kg (2.65 lbs) |
| OEM Reference | ZF 4108.322.031 |
| Sealing Surface Finish | Ra 0.4 µm |
Compatibility
This swash plate is designed for ZF powershift transmissions used in wheel loaders, dozers, and graders. Based on its hydraulic pump architecture, the 4108.322.031 is compatible with the following ZF models: WG180, WG200, WG211, and WG310. It also fits select 4WG-200 and 6WG-200 variants. Always verify with your transmission serial number before installation. During rebuilds, pair this plate with a new 0636302056: SCREW PLUG to secure the hydraulic circuit.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101112 | HOUSING | Encloses the swash plate and pump assembly |
| 4108201177 | HOUSING | Secondary housing for hydraulic control valves |
| 0636302056 | SCREW PLUG | Seals hydraulic ports against leakage |
| 4108301304 | BEARING COVER | Retains thrust bearings on the pump shaft |
| 4108306173 | GASKET | Prevents fluid seepage between mating surfaces |
| 0750110040 | SHAFT SEAL | Dynamic seal for rotating pump shaft |
| 4108102042 | INPUT | Transfers engine torque to the transmission |
| 4108302099 | PLANET CARRIER | Holds planetary gears for torque multiplication |
| 4108302007 | BEARINGSHEET | Shim set for adjusting bearing preload |
| 0635332196 | BALL BEARING | Supports high-speed shaft rotation |
