Overview
The ZF 0730.063.417 RING is a precision-engineered OEM genuine component designed for heavy-duty construction machinery transmissions. This ring functions as a critical sealing and spacing element within the hydraulic control system of ZF power shift transmissions. It sits between the valve body and housing assembly, ensuring proper fluid channel isolation and maintaining consistent hydraulic pressure during gear engagement. The SKU 0730.063.417 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn or damaged rings in high-stress environments like wheel loaders, graders, and dump trucks.
Symptoms of Failure
When the ZF 0730.063.417 RING deteriorates, operators often notice erratic shifting under load due to pressure loss in the clutch circuits. A second common sign is hydraulic oil contamination from ring material breaking down, which can clog fine mesh filters. You may also experience delayed engagement when shifting from neutral to drive, especially in cold weather conditions. Finally, intermittent gear slippage during uphill operation frequently points to a compromised ring seal within the transmission control assembly.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0730.063.417 |
| Material | Nitrile rubber (NBR) with steel insert |
| Inner Diameter | 63.0 mm |
| Outer Diameter | 73.0 mm |
| Thickness | 4.2 mm |
| Weight | 0.018 kg |
| OEM Reference | ZF 0730.063.417 |
| Operating Temperature | -40°C to +120°C |
Compatibility
This ring is primarily used in ZF WG180, WG200, and WG310 series transmissions found in construction machinery from manufacturers like Liebherr, Caterpillar, and Volvo. It also appears in certain ZF 4WG-200 and 6WG-310 power shift models. Always verify your transmission serial number before ordering, as variations exist between early and late production units.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101009 | HOUSING | Encloses valve body and ring assembly |
| 4143301025 | HOUSING | Secondary housing for clutch piston |
| 0634313603 | O-RING | Seals between housing and cover plate |
| 4475280018 | SCREW PLUG | Closes hydraulic test ports |
| 0501342341 | SUPPORT RING | Prevents ring extrusion under high pressure |
| 4143298457 | SEAL KIT | Complete overhaul kit with all seals |
| 0634313591 | O-RING | Secondary seal for piston bore |
| 0636101068 | CAP SCREW | Fastens housing to transmission case |
| 4143221013 | THROTTLE VALVE | Modulates shift pressure |
| 0634304484 | O-RING | Seals throttle valve bore |

