Overview
The ZF 0750.147.277 HOSE PIPE is a critical fluid conduit engineered for the WG 211 transmission series. This OEM genuine part directs pressurized hydraulic oil between the valve body and the clutch piston circuits, ensuring precise shift timing and lubrication flow. The SKU 0750.147.277 is specifically designed to withstand high thermal loads and vibration fatigue common in heavy-duty industrial applications. When installed correctly, this hose pipe maintains consistent line pressure, preventing cavitation and ensuring smooth gear engagement under load.
Symptoms of Failure
- Hydraulic oil seepage at hose connections: A worn 0750.147.277 often develops micro-cracks at the crimped ends, leading to visible fluid residue around the transmission housing. This is a common long-tail search query for “ZF WG211 oil leak near valve body.”
- Erratic shift hesitation under load: When the hose pipe loses internal integrity, pressure drops cause delayed clutch pack engagement. Operators may notice “WG211 gear slipping during acceleration” as a primary symptom.
- Audible whining from the transmission pump: A restricted or collapsing hose pipe forces the pump to work harder, producing a high-pitched noise. This is frequently searched as “ZF transmission whining noise after hose replacement.”
- Burned transmission fluid odor: Restricted flow through a degraded hose pipe generates excessive heat, oxidizing the ATF. This symptom often accompanies “overheating WG200 series transmission” queries.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0750.147.277 |
| Material | Reinforced synthetic rubber with braided steel mesh |
| Inner Diameter | 12.7 mm (0.5 in) |
| Outer Diameter | 22.5 mm (0.89 in) |
| Length (overall) | 410 mm (16.1 in) |
| Weight | 0.34 kg (0.75 lbs) |
| OEM Reference | ZF 0750.147.277 |
| Burst Pressure | 35 bar (507 psi) |
| Operating Temperature | -40°C to +150°C |
Compatibility
This hose pipe is primarily validated for the ZF WG 211 series, but its hydraulic routing dimensions also suit the WG180, WG200, and WG210 transmission families. It interfaces directly with the 4657120005 PRESSURE REGULATOR to modulate line pressure, and connects to the 0501211384 VALVE for directional flow control. The assembly also requires the 0630532183 INDENTED RING for secure sealing at the piston housing, and the 4656306145 PISTON for clutch apply force. Always verify the hose routing matches your specific transmission variant before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657120005 | PRESSURE REGULATOR | Maintains stable hydraulic pressure to the hose pipe circuit |
| 0501211384 | VALVE | Directs oil flow from the hose pipe to clutch packs |
| 0630532183 | INDENTED RING | Seals the hose pipe connection to the piston housing |
| 4656306145 | PISTON | Applies clamping force to clutch plates via hydraulic pressure |
| 0732042767 | COMPRESSION SPRING | Returns the piston to neutral position when pressure drops |
| 0631612064 | SET SCREW | Secures the hose pipe bracket to the transmission housing |
| 0631610026 | SET SCREW | Locks the valve body alignment to the hose pipe port |
| 4657101048 | TRANSMISSION HOUSING | Encloses the entire hydraulic circuit including the hose pipe |
| 4657301061 | HOUS.FRONT SECT | Front section housing that supports the hose pipe routing |
| 4657301062 | HOUSING REAR PART | Rear section housing with mounting points for the hose pipe |
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