Overview
The ZF 0501.209.244 VALVE is a critical hydraulic control component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part regulates oil flow and pressure within the valve body, directly governing clutch engagement and gear selection. As a precision-machined spool valve, the SKU 0501.209.244 ensures that hydraulic circuits open and close at the correct moments, preventing pressure loss during high-torque operations. It sits within the main control unit, adjacent to the 2094104412: MAIN SHAFT and the 2094106010: SHIFT SYSTEM, forming a sealed assembly that directs fluid to the clutches and brakes.
Symptoms of Failure
When the 0501.209.244 valve wears, operators often report delayed engagement when shifting from neutral to drive, a classic sign of internal leakage. Another common failure is intermittent gear slipping under load, particularly in third or fourth gear, as the valve fails to maintain line pressure. You may also notice erratic shift timing or harsh upshifts, caused by the valve sticking in its bore. Finally, visible oil seepage around the valve body mating surface indicates the sealing lands have worn, allowing ATF to bypass the intended circuit.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0501.209.244 |
| OEM Reference | ZF 0501.209.244 |
| Material | Hardened steel with phosphate coating |
| Weight | 0.18 kg (0.40 lbs) |
| Length | 85 mm |
| Outer Diameter | 22 mm |
| Operating Pressure | 12–18 bar |
| Seal Type | Ground spool lands (no O-rings) |
Compatibility
This valve is specifically designed for the ZF WG series powershift transmissions. Primary fitment includes the WG100, WG130, and WG131 models. It may also be used in the WG180 and WG200 series where the valve body configuration matches, though cross-referencing the transmission serial number is recommended. The part works in conjunction with the 2094304054: MAIN SHAFT and the 2094206001: GEARSHIFT SHAFT to complete the hydraulic control circuit. Always verify your valve body casting number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from input to output |
| 2094304054 | MAIN SHAFT | Alternative shaft for WG130 series |
| 2094106010 | SHIFT SYSTEM | Mechanical shift linkage assembly |
| 2094206001 | GEARSHIFT SHAFT | Controls fork movement |
| 2094306053 | GEARSHIFT SHAFT | Alternate shaft for WG131 |
| 0630513070 | SNAP RING | Retains shaft bearings |
| 2094306019 | WASHER | Thrust washer for shaft spacing |
| 0732040444 | COMPRESSION SPRING | Returns shift rail to neutral |
| 0732040728 | COMPRESSION SPRING | Heavy-duty spring for detent |
| 2093206001 | BUSH | Guide bushing for shift shaft |
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