Overview
The ZF 4646.101.184 TRANSMISSION HOUSING is a precision-engineered OEM sub-assembly designed for the WG 250, WG 260, and WG 310 series of heavy-duty transmissions. This structural component encases the gear train, clutch packs, and hydraulic valve body, providing the rigid foundation required for torque transfer and oil circulation. As the primary structural shell, it aligns all internal rotating elements and maintains correct bearing preload under extreme loads. The SKU 4646.101.184 is a direct replacement for the original factory housing, ensuring exact bolt-hole alignment and sealing surface integrity. When installing this housing, always pair it with new 0636115293 螺栓 and 0736300232 螺栓 to achieve the manufacturer’s specified torque values.
Symptoms of Failure
- External oil seepage at mating flanges: A cracked or warped housing allows transmission fluid to escape, often visible as wet spots around the bell housing or PTO cover. This is a common long-tail search query for “ZF transmission housing oil leak WG260.”
- Gear engagement hesitation or slipping: Distortion in the housing bore shifts gear center distances, causing incomplete clutch pack engagement. Operators may notice delayed shifts under load.
- Abnormal whining or grinding noises: When the housing loses dimensional stability, bearing journals become misaligned, producing a metallic whine that increases with RPM.
- Contaminated oil from internal cracks: Hairline fractures allow debris from the torque converter to enter the main sump, visible as metallic particles during oil changes.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4646.101.184 |
| Material | High-grade cast aluminum alloy (A356-T6) |
| Dry Weight | 18.7 kg (41.2 lbs) |
| Overall Length | 485 mm |
| Overall Width | 320 mm |
| Overall Height | 295 mm |
| Bolt Hole Pattern | 12-point, M12 x 1.5 |
| OEM Reference | ZF 4646.101.184 |
| Sealing Method | Anaerobic flange sealant + 0634316523 O-RING |
| Max Operating Temperature | 120°C (248°F) |
Compatibility
This housing is engineered for the ZF WG series powershift transmissions. It is a direct fit for the following models: WG 180, WG 200, WG 250, WG 260, WG 310, and WG 311 series. The part is also compatible with the WG 261 and WG 311 sub-series listed in our current categories. For installations requiring a sealed oil circuit, verify that the 4475280208 SCREW PLUG is torqued to 35 Nm to prevent pressure loss. Always inspect the mating surface for burrs before assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636115293 | 螺栓 | Housing-to-bell housing fastening bolt |
| 0736300232 | 螺栓 | Main bearing cap retaining bolt |
| 4475280208 | SCREW PLUG | Oil gallery sealing plug |
| 0634316523 | O-RING | Housing-to-pump interface seal |
| 0630361026 | SEALING CAP | Pressure test port cover |
| 0501214611 | 齿轮泵 | Hydraulic oil supply pump |
| 0634313945 | O形圈 | Pump-to-housing seal |
| 0501322534 | TEMPERATURE SENSOR | Oil temperature monitoring probe |
| 0634313366 | O-RING | Sensor mounting seal |
| 4646130044 | ENGINE CONNECTION | Flywheel housing adapter |
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