Overview
The ZF 0750.147.175 HOSE PIPE is a critical fluid transfer component engineered for the WG 150 transmission series. This OEM genuine part channels hydraulic oil between the valve body and the cooler circuit, ensuring consistent lubrication and thermal regulation under heavy-duty cycles. As a direct-fit replacement, the SKU 0750.147.175 eliminates guesswork during rebuilds, maintaining the exact flow rate and pressure tolerance specified by ZF. When paired with a secure TRANSMISSION HOUSING (4642101109), this hose pipe prevents cross-threading and vibration-induced loosening, which are common failure points in high-torque applications.
Symptoms of Failure
- Hydraulic oil seepage at the hose pipe connection: A worn 0750.147.175 often develops micro-cracks near the crimped ends, leading to slow fluid loss that stains the transmission housing.
- Erratic gear engagement under load: Restricted flow through a collapsed hose pipe causes pressure drops, resulting in delayed shifts or slipping in the WG150’s forward gears.
- Overheating during extended operation: When the hose pipe partially blocks oil return to the cooler, transmission temperatures rise above 120°C, triggering warning lights on heavy equipment.
- Visible swelling or blistering on the rubber exterior: Exposure to degraded transmission fluid causes the hose pipe material to soften, creating a risk of sudden rupture during peak torque.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0750.147.175 |
| Material | Reinforced synthetic rubber with braided polyester |
| Inner Diameter | 12.7 mm (0.5 in) |
| Outer Diameter | 21.3 mm (0.84 in) |
| Length (overall) | 475 mm (18.7 in) |
| Weight | 0.18 kg (0.4 lbs) |
| OEM Reference | ZF 0750.147.175 |
| Burst Pressure | 35 bar (507 psi) |
Compatibility
This hose pipe is specifically validated for the ZF WG 150 series, but it also fits select variants of the WG 180 and WG 200 transmissions where the cooler line routing matches. The 0750.147.175 is commonly used in off-highway vehicles, including wheel loaders and dump trucks, that share the same hydraulic circuit architecture. For proper installation, always verify the TRANSMISSION HOUSING (4642301205) alignment, as misaligned brackets can kink the hose. Additionally, the TYPE PLATE (0730365125) on your unit should be cross-referenced to confirm the exact revision level, as later WG150 models use a slightly different banjo fitting. Secure the hose pipe with the correct GROOVED STUD (0631311009) to maintain torque specifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Encloses gear sets and supports bearing alignment |
| 4642301205 | TRANSMISSION HOUSING | Alternate housing variant for WG150 series |
| 0730365125 | TYPE PLATE | Identifies transmission model and revision |
| 0631311009 | GROOVED STUD | Secures hose pipe brackets to housing |
| 4642301168 | SCREEN SHEET | Filters debris from hydraulic oil flow |
| 4642301169 | SCREEN SHEET | Fine mesh screen for cooler return line |
| 0636100621 | HEXAGON SCREW | Fastens screen sheet to valve body |
| 4642301186 | SCREEN SHEET | High-flow screen for heavy-duty applications |
| 4644106231 | SHIFT SYSTEM | Controls clutch pack engagement sequence |
| 4644306470 | GASKET | Seals hose pipe connection to cooler adapter |
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