Overview
The ZF 0750.147.224 HOSE PIPE is a critical fluid transfer component engineered for high-pressure hydraulic circuits within ZF construction machinery transmissions. This OEM genuine part channels transmission oil between the valve body and the cooler circuit, ensuring consistent lubrication and thermal regulation under extreme loads. The SKU 0750.147.224 identifies a precision-formed pipe that resists vibration fatigue and thermal expansion. It sits directly between the main housing and the external cooler lines, often paired with a 4143101009 HOUSING to maintain sealed flow paths. Without this pipe, the transmission cannot maintain proper oil pressure, leading to rapid component wear.
Symptoms of Failure
- External oil leaks at the hose pipe connection: Cracks or corrosion in the 0750.147.224 cause visible drips near the transmission bell housing, often mistaken for a failing 0634313603 O-RING.
- Intermittent gear slipping under load: A restricted or collapsed pipe reduces oil flow to the clutch packs, causing delayed engagement in forward or reverse gears.
- Overheating transmission fluid: Blocked flow through the pipe prevents adequate cooling, triggering warning lights and fluid degradation.
- Erratic shift quality: Air ingestion from a cracked pipe leads to spongy shifts and harsh engagement, especially in low-speed maneuvering.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0750.147.224 |
| Type | Hydraulic Hose Pipe (Pre-formed Steel) |
| Material | Seamless Carbon Steel with Zinc-Nickel Plating |
| Length (Overall) | 320 mm ± 2 mm |
| Outer Diameter | 12 mm |
| Wall Thickness | 1.5 mm |
| Weight | 0.18 kg |
| OEM Reference | ZF 0750.147.224 |
| Max Working Pressure | 25 bar |
| Temperature Range | -40°C to +120°C |
Compatibility
This hose pipe is designed for ZF WG series transmissions commonly used in wheel loaders, graders, and telehandlers. It fits the following models: WG180, WG200, WG211, and WG310. It also appears in certain ZF Ecolife and AS Tronic off-highway variants. Always verify the routing against the 4143301025 HOUSING to confirm correct fitment. For complete sealing, replace the 4475280018 SCREW PLUG and O-rings during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101009 | HOUSING | Encloses valve body and supports pipe routing |
| 4143301025 | HOUSING | Secondary housing for cooler circuit integration |
| 0634313603 | O-RING | Seals pipe-to-housing connection |
| 4475280018 | SCREW PLUG | Closes unused ports in the housing |
| 0501342341 | SUPPORT RING | Prevents pipe deformation under torque |
| 4143298457 | SEAL KIT | Complete set of gaskets for overhaul |
| 0634313591 | O-RING | Secondary seal for cooler line adapter |
| 0636101068 | CAP SCREW | Fastens pipe brackets to housing |
| 4143221013 | THROTTLE VALVE | Regulates oil flow to the pipe |
| 0634304484 | O-RING | Seals throttle valve connection |
