Overview
The ZF 0730.260.144 FLANGE BUSH is a precision-engineered bearing component designed for the WG 65 transmission series. This OEM genuine part serves as a critical interface between rotating shafts and stationary housings, reducing friction while maintaining exact axial alignment under heavy torque loads. Located within the transmission’s output section, the flange bush supports the planetary carrier assembly and ensures smooth power transfer during gear changes. The SKU 0730.260.144 is manufactured to ZF’s original tolerances, guaranteeing a direct fit without modification. When replacing this bush, technicians should also inspect the 4616101059: TRANSMISSION HOUSING for wear patterns that may indicate misalignment.
Symptoms of Failure
- Transmission oil leaks at the flange interface: Worn bushings create gaps that allow ATF to escape past the seal, often visible as drips near the bell housing.
- Gear slipping under load: Excessive radial play from a degraded flange bush causes the shaft to wobble, interrupting clutch pack engagement and producing intermittent power loss.
- Metallic grinding noise during deceleration: As the bush’s bronze lining erodes, metal-to-metal contact generates a distinct scraping sound that intensifies when the transmission is hot.
- Vibration in neutral or park: A worn bush fails to dampen torsional vibrations, transmitting harmonics through the 0636011038: HEXAGON SCREW fasteners and into the chassis.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.260.144 |
| Inner Diameter | 45 mm |
| Outer Diameter | 60 mm |
| Flange Thickness | 8 mm |
| Overall Length | 32 mm |
| Material | Steel-backed bronze (sintered) |
| Weight | 0.18 kg |
| OEM Reference | 0730.260.144 (ZF) |
| Hardness | HRB 85-95 |
Compatibility
This flange bush is specifically engineered for the ZF WG 65 series, but it also fits select models in the WG180 and WG200 families due to shared planetary carrier dimensions. It is a direct replacement for transmissions used in medium-duty trucks, buses, and construction equipment from 1995 onward. Always verify the housing bore condition before installation; pairing with a new 0636011118: HEXAGON SCREW and 0636016015: HEXAGON SCREW ensures proper clamping force. For complete overhaul kits, the 0631306085: CYLINDRICAL PIN and 0634313118: O-RING are commonly replaced simultaneously.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Encloses gear train and supports bushings |
| 0636011038 | HEXAGON SCREW | Secures housing to bell housing |
| 0636011118 | HEXAGON SCREW | Fastens flange cover plate |
| 0636016015 | HEXAGON SCREW | Mounts output flange to shaft |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals oil passages between sections |
| 0636304019 | SCREW PLUG | Closes inspection port in housing |
| 0634801152 | SEALING RING | Prevents fluid loss at shaft exit |
| 0732611049 | FILTER INSERT | Captures debris in lubrication circuit |
| 0634303718 | O-RING | Gaskets the filter housing cover |
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