Overview
The ZF 0734.309.932 SHAFT SEAL is a critical dynamic sealing component engineered for the WG92 and WG98 transmission series. Positioned at the output shaft interface, this OEM genuine part prevents transmission fluid from escaping the housing while blocking contaminants from entering the gear train. The SKU 0734.309.932 directly interfaces with the TRANSMISSION HOUSING and the HOUSING assembly, ensuring a pressurized seal that maintains hydraulic integrity during high-torque operations. This seal is manufactured to ZF’s exacting tolerances, guaranteeing a service life that matches the transmission’s overhaul interval.
Symptoms of Failure
- Transmission fluid puddling under the bell housing – A worn 0734.309.932 seal allows ATF to weep past the shaft, creating visible drips after parking. This is the most common “shaft seal oil leak” complaint in WG92 units.
- Low fluid level warnings without visible external leaks – The seal can fail internally, allowing fluid to migrate into the torque converter housing. This “hidden leak” often triggers erratic shifting before a puddle appears.
- Whining or chirping noise from the output shaft area – As the sealing lip hardens or cracks, it creates friction against the rotating shaft, producing a high-pitched sound that worsens under load.
- Contaminated fluid with metallic particles – A compromised seal permits dirt ingress, accelerating wear on the PERIPHERALS assembly and causing premature failure of the RANGE SELECTOR valve body.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0734.309.932 |
| Inner Diameter | 65 mm |
| Outer Diameter | 90 mm |
| Width | 12 mm |
| Material | Nitrile rubber (NBR) with steel casing |
| Weight | 0.045 kg |
| OEM Reference | ZF 0734.309.932 |
| Operating Temperature | -40°C to +120°C |
Compatibility
This shaft seal is specifically designed for ZF’s WG series powershift transmissions. It is a direct replacement in the following models: WG92, WG98, WG90, and WG94 series. The part also fits the WG180 and WG200 variants when used in output shaft positions with matching bore dimensions. Always verify the housing bore diameter against the 90 mm outer dimension before installation. For complete transmission overhaul, pair this seal with the O-RING and CAP SCREW for the housing cover.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660198001 | PERIPHERALS | Controls hydraulic flow to clutch packs |
| 0501209818 | RANGE SELECTOR | Manages gear range engagement |
| 4660101011 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4660301018 | HOUSING | Secondary housing for valve body |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0769123894 | TYPE PLATE | Identification tag for transmission model |
| 4660221012 | SUCTION TUBE | Oil pickup from pan to pump |
| 0634100317 | O-RING | Static seal for housing joints |
| 0636103273 | CAP SCREW | Fastener for housing covers |
| 0750100022 | SCREW PLUG | Seals drain or test ports |
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