Overview
The ZF 4616.308.015 OIL FEEDING BUSH is a precision-engineered component designed for the WG 65 series transmission. This OEM genuine part serves as a critical conduit for directing pressurized hydraulic fluid to the rotating clutch packs and planetary gear sets within the transmission assembly. Positioned directly within the main shaft bore, the oil feeding bush ensures a consistent, metered flow of lubricant and cooling oil to high-friction zones, preventing thermal degradation and mechanical wear. The SKU 4616.308.015 is manufactured to ZF’s exacting tolerances, guaranteeing a leak-free interface between stationary housing and rotating shafts. When installed alongside the 4616101059: TRANSMISSION HOUSING, this bush forms the foundation of the transmission’s internal lubrication circuit.
Symptoms of Failure
When the 4616.308.015 oil feeding bush wears beyond specification, operators will notice distinct performance degradation. Common failure indicators include:
- Oil leaks from the bell housing area: Worn bush surfaces allow pressurized oil to bypass seals, creating visible drips or puddling beneath the transmission.
- Delayed gear engagement or slipping: Insufficient oil pressure to clutch packs causes hesitation when shifting from neutral to drive or reverse.
- Overheating transmission fluid: Reduced oil flow through the bush leads to inadequate cooling, triggering thermal alarms or burnt fluid odor.
- Erratic shift quality: Fluctuating hydraulic pressure from a scored bush results in harsh or unpredictable gear changes.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.308.015 |
| OEM Reference | ZF 4616.308.015 |
| Material | Sintered bronze with PTFE lining |
| Outer Diameter | 38.0 mm |
| Inner Diameter | 28.0 mm |
| Length | 42.5 mm |
| Weight | 0.085 kg |
| Hardness | HRB 75-85 |
Compatibility
This oil feeding bush is specifically engineered for the ZF WG 65 series, but its design principles apply to several heavy-duty ZF transmissions that share the same shaft diameter and oil gallery configuration. Compatible models include the WG65, WG80, WG120, WG180, and WG200 series. It is also suitable for certain off-highway and marine variants within the WG family. For proper installation, ensure the 0636011038: HEXAGON SCREW, 0636011118: HEXAGON SCREW, and 0636016015: HEXAGON SCREW are torqued to factory specifications to secure the housing assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Encloses and supports all internal transmission components |
| 0636011038 | HEXAGON SCREW | Secures housing and cover plates |
| 0636011118 | HEXAGON SCREW | Fastens oil pan and valve body |
| 0636016015 | HEXAGON SCREW | Mounts clutch housing to bell housing |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals oil passages between bush and housing |
| 0636304019 | SCREW PLUG | Closes oil gallery access ports |
| 0634801152 | SEALING RING | Prevents external oil leaks at plug interfaces |
| 0732611049 | FILTER INSERT | Traps debris before oil enters the bush |
| 0634303718 | O-RING | Seals the filter insert housing |
