Overview
The ZF 0750.147.174 HOSE PIPE is a critical fluid transfer component engineered specifically for the WG 150 series transmission. This OEM genuine part directs pressurized hydraulic oil between the valve body and the cooler circuit, ensuring consistent lubrication and thermal regulation within the gearbox. The SKU 0750.147.174 is precision-formed to maintain flow integrity under high-temperature conditions, preventing pressure drops that compromise shift quality. When installed alongside a TRANSMISSION HOUSING or a TRANSMISSION HOUSING, this hose pipe completes the sealed oil gallery essential for WG 150 durability.
Symptoms of Failure
- Hydraulic oil seepage at the pipe connection points – Visible wetness or drips near the hose ends indicate seal degradation, often leading to low fluid levels and erratic gear engagement.
- Delayed or harsh shifting under load – A compromised hose pipe reduces line pressure, causing sluggish clutch pack application and noticeable shift shock during acceleration.
- Overheating transmission fluid – Restricted flow through a collapsed or kinked hose pipe prevents proper oil cooling, triggering thermal warnings or burnt fluid odor.
- Air ingestion into the hydraulic circuit – Cracks in the hose wall allow air bubbles to enter, resulting in spongy shift feel and intermittent loss of drive.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0750.147.174 |
| OEM Reference | ZF 0750.147.174 |
| Material | Reinforced synthetic rubber with braided textile layer |
| Overall Length | Approx. 320 mm |
| Inner Diameter | 12 mm |
| Outer Diameter | 20 mm |
| Weight | 0.15 kg |
| Operating Pressure | Up to 18 bar |
| Temperature Range | -40°C to +120°C |
Compatibility
This hose pipe is primarily designed for the ZF WG 150 series, but it also fits select variants of the WG 180 and WG 200 transmissions where the hydraulic routing is identical. It is a direct replacement for machines equipped with the 4-speed powershift gearbox. Always verify the routing against your existing assembly; the TYPE PLATE on the transmission housing provides the exact model code for cross-referencing. Additionally, the GROOVED STUD used to secure this hose pipe must be inspected for thread wear during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Encloses gear train and supports hydraulic circuits |
| 4642301205 | TRANSMISSION HOUSING | Alternate housing variant for WG series |
| 0730365125 | TYPE PLATE | Identification plate with model and serial number |
| 0631311009 | GROOVED STUD | Fastener for hose pipe mounting bracket |
| 4642301168 | SCREEN SHEET | Filter mesh for oil sump intake |
| 4642301169 | SCREEN SHEET | Fine filtration screen for hydraulic circuit |
| 0636100621 | HEXAGON SCREW | Mounting bolt for housing cover |
| 4642301186 | SCREEN SHEET | Secondary oil strainer for cooler return line |
| 4644106231 | SHIFT SYSTEM | Valve body assembly controlling clutch engagement |
| 4644306470 | GASKET | Seal between housing and cover plate |
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