Overview
The ZF 0750.147.008 HOSE PIPE is a critical fluid transfer component engineered specifically for the WG150 and WG181 transmission series. This OEM genuine part channels pressurized hydraulic oil between the valve body and the cooler circuit, ensuring consistent lubrication and thermal regulation within the gear train. As a direct replacement for the original factory assembly, the SKU 0750.147.008 maintains the exact flow characteristics required for reliable clutch engagement and torque converter lockup. Without this hose pipe, the transmission cannot maintain proper line pressure, leading to erratic shifting and potential overheating. It integrates seamlessly with the 4642101109: TRANSMISSION HOUSING and the 4642301205: TRANSMISSION HOUSING, forming a sealed hydraulic circuit that supports heavy-duty industrial applications.
Symptoms of Failure
- External hydraulic oil leaks — Cracks or embrittlement in the hose pipe cause visible fluid seepage around the transmission case, often mistaken for a gasket failure.
- Delayed or harsh gear engagement — A compromised hose pipe reduces line pressure, resulting in sluggish forward or reverse engagement, especially under load.
- Transmission overheating — Restricted fluid flow through a collapsed or blocked hose pipe prevents adequate cooling, triggering thermal warnings or slipping clutches.
- Erratic shift timing — Inconsistent hydraulic supply to the shift valves causes unpredictable upshifts or downshifts, often accompanied by flare between gears.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0750.147.008 |
| OEM Reference | 0750.147.008 |
| Material | Reinforced synthetic rubber with textile braid |
| Inside Diameter | 12 mm (0.47 in) |
| Outside Diameter | 18 mm (0.71 in) |
| Length (overall) | 320 mm (12.6 in) |
| Weight | 0.15 kg (0.33 lb) |
| Operating Pressure | Up to 15 bar (217 psi) |
| Temperature Range | -40°C to +120°C (-40°F to +248°F) |
Compatibility
This hose pipe is a direct fit for ZF WG150 and WG181 series transmissions commonly found in forklifts, wheel loaders, and industrial machinery. It also serves as a service replacement for select WG180 and WG200 variants where the hydraulic cooler circuit uses a flexible hose connection. Always verify the routing against the 0730365125: TYPE PLATE on your transmission housing to confirm model compatibility. The assembly is secured using the 0631311009: GROOVED STUD for proper alignment and clamping force.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4642301205 | TRANSMISSION HOUSING | Alternate housing variant for WG181 series |
| 0730365125 | TYPE PLATE | Identification plate with model and serial number |
| 0631311009 | GROOVED STUD | Alignment stud for hose pipe mounting |
| 4642301168 | SCREEN SHEET | Filter screen for hydraulic fluid intake |
| 4642301169 | SCREEN SHEET | Fine mesh filter for oil return circuit |
| 0636100621 | HEXAGON SCREW | Fastener for securing housing components |
| 4642301186 | SCREEN SHEET | Secondary filter element for high-flow circuits |
| 4644106085 | SHIFT SYSTEM | Valve body assembly for gear selection |
| 4642306050 | COVER PLATE | Sealing plate for transmission access port |
