Overview
The ZF 0730.002.677 WASHER for WG150 is a precision-engineered sealing component designed to maintain hydraulic integrity within the transmission assembly. This OEM genuine part sits between the TRANSMISSION HOUSING and mating surfaces, preventing fluid bypass and ensuring consistent pressure regulation. As a critical element in the WG 150 Series, the 0730.002.677 washer functions as a load-distributing interface that absorbs vibrational stress while maintaining a leak-proof seal. Its placement within the clutch pack or valve body circuit directly influences shift quality and torque transmission efficiency.
Symptoms of Failure
- Hydraulic fluid seepage around housing joints: A worn 0730.002.677 washer often causes visible oil leaks at the interface between the TRANSMISSION HOUSING and adjacent components, leading to low fluid levels and eventual overheating.
- Erratic gear engagement under load: When this washer deforms or cracks, internal pressure drops result in delayed or harsh shifting, particularly during uphill driving or heavy towing.
- Metallic debris in transmission fluid: Deterioration of the washer material introduces particles into the oil circuit, which can clog the SCREEN SHEET and accelerate wear on planetary gears.
- Audible whining or grinding noises: Loss of washer thickness allows metal-to-metal contact between the GROOVED STUD and housing surfaces, producing distinct acoustic feedback during operation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0730.002.677 |
| Inner Diameter | 18.5 mm |
| Outer Diameter | 32.0 mm |
| Thickness | 2.5 mm |
| Material | Zinc-plated steel with nitrile coating |
| Weight | 12 grams |
| OEM Reference | ZF 0730.002.677 |
| Hardness Rating | HRC 45-50 |
Compatibility
This washer is engineered for the ZF WG150 transmission series but also fits select models in the WG180 and WG200 families where identical sealing interfaces exist. It is compatible with both standard and high-torque variants of the WG150, including those paired with the SHIFT SYSTEM assembly. For applications using the COVER PLATE from the WG200 series, verify housing dimensions against the TYPE PLATE to ensure proper fitment. The 0730.002.677 is not recommended for use in WG130 or WG250 transmissions without consulting OEM specifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101047 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4642301207 | TRANSMISSION HOUSING | Alternate housing variant for WG150 |
| 0730365067 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Fastener for housing alignment |
| 4642301168 | SCREEN SHEET | Filter mesh for hydraulic fluid |
| 4642301169 | SCREEN SHEET | Fine-mesh filter variant |
| 0636100621 | HEXAGON SCREW | Mounting bolt for housing |
| 4642301186 | SCREEN SHEET | High-flow filter screen |
| 4644106300 | SHIFT SYSTEM | Gear selection mechanism |
| 4644306500 | COVER PLATE | Protective housing cover |
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