Overview
The ZF 0501.007.510 PUMP is a critical hydraulic power unit engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part serves as the primary oil pump, generating the necessary hydraulic pressure to actuate clutch packs, modulate shift timing, and maintain lubrication flow within the gear train. Positioned directly within the transmission’s valve body cavity, the pump draws fluid from the sump and delivers it under pressure to the torque converter and cooler circuit. The SKU 0501.007.510 is a direct replacement unit, precision-machined to ZF’s original tolerances to ensure volumetric efficiency and consistent output. When installed alongside the 2093101025: HOUSING, this pump forms the core of the transmission’s hydraulic system, converting mechanical rotation into reliable fluid power.
Symptoms of Failure
- Delayed or harsh engagement: A worn pump cannot build sufficient standby pressure, causing a noticeable lag when shifting from Neutral to Drive or Reverse, often accompanied by a jarring clunk.
- Intermittent gear slipping under load: As the pump loses volumetric efficiency, hydraulic pressure drops during acceleration, allowing clutch packs to slip and causing RPM flare without corresponding vehicle speed increase.
- Persistent low-pressure warning or whining noise: Cavitation from a worn pump rotor produces a high-pitched whine, while the transmission control unit may log fault codes for insufficient line pressure, especially at idle.
- Overheating and fluid aeration: A failing pump introduces air into the hydraulic circuit, causing foamy, discolored ATF and elevated operating temperatures that can damage the 2093301031: TRANSMISSION HOUSING seals.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 0501.007.510 |
| Pump Type | Gerotor / Internal Gear |
| Displacement | 14.2 cc/rev (estimated) |
| Maximum Pressure | 22 bar (320 psi) |
| Housing Material | High-strength aluminum alloy |
| Rotor Material | Sintered steel with PTFE coating |
| Dry Weight | 1.85 kg (4.08 lbs) |
| Mounting Bolt Torque | 25 Nm (18.4 lb-ft) |
| Seal Type | Integrated O-ring groove |
Compatibility
This pump is factory-specified for the ZF WG100, WG130, and WG131 series off-highway transmissions. It is also mechanically compatible with the WG180 and WG200 models when used with the correct 0730365092: TYPE PLATE to verify housing casting revisions. The pump interfaces directly with the torque converter housing and requires the 4475280013: SCREW PLUG for pressure port sealing during installation. Always cross-reference your transmission serial number against ZF’s application guide, as pump drive tang configurations vary between WG series generations.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093101025 | HOUSING | Encloses pump and valve body assembly |
| 2093301031 | TRANSMISSION HOUSING | Main structural case for gear sets |
| 0730365092 | TYPE PLATE | Identification tag for model verification |
| 4475280013 | SCREW PLUG | Seals pump pressure test port |
| 2093301021 | GASKET | Prevents fluid leakage between mating surfaces |
| 2093301033 | COVER | Protects pump access opening |
| 0636015073 | HEXAGON SCREW | Fastens pump to housing |
| 0634314235 | O-RING | Seals pump inlet/outlet ports |
| 0501337897 | SPEED SENSOR | Monitors pump drive shaft rotation |
| 0636101026 | CAP SCREW | Secures pump retaining bracket |
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