Overview
The ZF 0632.702.802 HOSE PIPE is a critical fluid transfer component engineered specifically for the WG 65 transmission series. This OEM genuine part channels pressurized hydraulic oil between the valve body and the clutch pack assembly, ensuring precise lubrication and cooling within the gearbox. As a direct replacement for the original factory-installed line, the SKU 0632.702.802 guarantees correct flow rates and pressure integrity. When paired with a robust 4616101111: TRANSMISSION HOUSING, this hose pipe maintains the sealed circuit necessary for consistent shift quality under heavy-duty cycles.
Symptoms of Failure
- External hydraulic oil seepage at the WG65 bell housing: A cracked or fatigued hose pipe often produces slow drips near the transmission pan rail, leaving visible puddles after extended operation.
- Delayed or harsh gear engagement under load: When the hose pipe loses internal pressure integrity, the clutch packs receive insufficient fluid, causing noticeable hesitation when shifting from neutral to drive.
- Erratic shift timing and clutch slip: A compromised hose pipe allows air ingress into the hydraulic circuit, leading to unpredictable shift points and momentary loss of torque during acceleration.
- Overheating transmission fluid: Restricted flow through a deformed hose pipe reduces cooling circulation, triggering thermal warnings or burnt fluid odor.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0632.702.802 |
| OEM Reference | ZF 0632.702.802 |
| Material | Reinforced synthetic rubber with braided textile |
| Inner Diameter | 12.7 mm (0.5 in) |
| Outer Diameter | 19.0 mm (0.75 in) |
| Overall Length | 385 mm |
| Weight | 0.18 kg (0.4 lb) |
| Burst Pressure Rating | 35 bar (507 psi) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This hose pipe is primarily designed for the ZF WG 65 series, but it also serves as a direct fit for the WG180 and WG200 transmissions when used in conjunction with the correct 0636011118: HEXAGON SCREW for mounting. The part is compatible with all WG65 variants (WG65, WG65C, WG65E) and can be retrofitted to earlier WG180 models that share the same hydraulic routing. For proper sealing, always inspect the 4616301304: HOUSING and 4616301309: HOUSING mating surfaces for corrosion or damage before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101111 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 0636011118 | HEXAGON SCREW | Fastener for hose pipe bracket |
| 4616301304 | HOUSING | Intermediate housing for clutch pack |
| 4616301309 | HOUSING | Rear housing for output shaft |
| 0636011038 | HEXAGON SCREW | Mounting bolt for valve body |
| 0636016015 | HEXAGON SCREW | Flange bolt for oil pan |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0634313118 | O-RING | Seal for hydraulic line connection |
| 0636304019 | SCREW PLUG | Port plug for pressure testing |
| 0634801152 | SEALING RING | Copper washer for banjo fitting |
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