Overview
The ZF 0730.001.927 INTERMEDIATE RING is a precision-engineered OEM genuine component designed for the WG 65 series of heavy-duty transmissions. This ring serves as a critical spacer and alignment element within the planetary gear set, ensuring correct axial clearance and load distribution between rotating assemblies. Installed between the main shaft and the clutch drum, the intermediate ring (SKU: 0730.001.927) prevents metal-on-metal contact and maintains hydraulic pressure integrity during high-torque operations. As an OEM part, it guarantees exact fitment and material composition matching ZF’s original manufacturing tolerances.
Symptoms of Failure
- Transmission oil leaks around the bell housing: A worn intermediate ring can cause misalignment, leading to seal distortion and external fluid seepage.
- Intermittent gear slipping under load: When the ring loses its dimensional stability, clutch pack clearance increases, resulting in delayed engagement or slipping during acceleration.
- Metallic grinding noises from the gearbox: Excessive wear on the ring allows direct contact between hardened steel components, producing audible scraping sounds during shifting.
- Erratic shift timing or harsh engagements: Hydraulic pressure fluctuations caused by a deformed intermediate ring disrupt the transmission’s shift schedule.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.001.927 |
| Material | Case-hardened steel (DIN 1.7131) |
| Outer Diameter | 195.0 mm |
| Inner Diameter | 165.5 mm |
| Thickness | 8.2 mm |
| Weight | 0.42 kg |
| OEM Reference | 0730.001.927 (ZF) |
Compatibility
This intermediate ring is engineered for the WG 65 series of ZF transmissions, including models such as WG180, WG200, WG210, and WG250. It is also used in select WG 65 variants found in municipal buses, construction loaders, and medium-duty trucks. Always verify your transmission’s serial number against the OEM parts catalog before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101066 | TRANSMISSION HOUSING | Encloses the gear train and supports bearing bores |
| 0636011118 | HEXAGON SCREW | Secures housing flanges with M12 thread |
| 4616301307 | HOUSING | Rear housing section for torque converter |
| 4616301309 | HOUSING | Front housing section for clutch assembly |
| 0636011038 | HEXAGON SCREW | M10 bolt for intermediate plate fastening |
| 0636016015 | HEXAGON SCREW | M16 bolt for main housing connection |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing centering |
| 0634313118 | O-RING | Hydraulic seal between ring and drum |
| 0636304019 | SCREW PLUG | Closes oil gallery access ports |
| 0634801152 | SEALING RING | Static seal for intermediate ring groove |
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