Overview
The ZF 2095.147.025 OIL SUPPLY is a critical hydraulic component engineered to deliver pressurized lubrication and cooling oil directly to the internal gear sets, bearings, and differential assemblies within ZF heavy-duty transmissions. Positioned within the transmission sump or valve body, this OEM genuine part ensures consistent oil flow to high-friction zones, preventing thermal degradation and metal-to-metal contact. The SKU 2095.147.025 is specifically calibrated for ZF’s modular construction machinery transmissions, where it works in tandem with the 2095109020 DIFFERENTIAL to maintain proper oil distribution across the axle assembly.
Symptoms of Failure
- Intermittent gear slipping under load: When the oil supply becomes clogged or the internal check valve fails, hydraulic pressure drops, causing the 0750117075 TAPER ROLLER BEARING to lose lubrication, leading to momentary power loss during excavation or grading.
- Visible oil seepage around the transmission housing: Cracks or seal degradation in the 2095.147.025 unit often produce slow, steady leaks that pool near the bell housing, especially after prolonged operation in high-temperature environments.
- Elevated operating temperatures and whining noise: A restricted oil supply forces the 2095209037 DIFFERENTIAL to run dry, generating excessive heat and a high-pitched metallic whine during turns or incline operation.
- Delayed engagement or harsh shifting: Insufficient oil volume to the clutch packs results in sluggish gear changes, often accompanied by a jarring “clunk” when shifting from forward to reverse.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2095.147.025 |
| OEM Reference | ZF 2095.147.025 |
| Material | High-tensile aluminum alloy with nitrile seals |
| Weight | 1.85 kg (4.08 lbs) |
| Overall Dimensions | 210 mm x 95 mm x 65 mm |
| Operating Pressure Range | 8–14 bar (116–203 psi) |
| Flow Rate Capacity | 18 L/min @ 1500 RPM |
| Thread Type | M22 x 1.5 inlet / M18 x 1.5 outlet |
| Seal Type | Viton O-ring (integrated) |
Compatibility
This oil supply unit is designed for ZF’s WG-series and EC-series transmissions commonly used in wheel loaders, telehandlers, and graders. Verified compatible models include:
- ZF WG180 (all variants)
- ZF WG200 (series 2 and 3)
- ZF EC130 (with hydraulic retarder option)
- ZF 4WG-200 (off-highway configuration)
For proper installation, ensure the 2095309059 DIFF.HOUSING is free of debris and that the mating surfaces are clean. This part directly interfaces with the differential carrier assembly to regulate oil flow to the 4482360002 AXLE BEVEL GEAR.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095109020 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on shafts |
| 2095209037 | DIFFERENTIAL | Secondary differential for planetary hubs |
| 2095309059 | DIFF.HOUSING | Encloses differential gear set |
| 0631329086 | SPRING PIN | Secures oil supply to housing |
| 0730300820 | THRUST WASHER | Reduces axial play in differential |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel ends |
| 2095309081 | DIFFERENTIAL AXLE | Connects differential to final drive |
| 5838300811 | THRUST WASHER | Prevents gear end-wear |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear for speed differentiation |
