Overview
This genuine ZF 0730.108.553 WASHER is a precision-engineered component designed to maintain critical axial clearance within the transmission’s rotating assembly. Installed between the main shaft and adjacent gear sets, this OEM part prevents metal-to-metal contact and ensures consistent load distribution under high torque conditions. The SKU 0730.108.553 is frequently specified during rebuilds of heavy-duty construction machinery transmissions, where even minor dimensional deviations can lead to premature wear. When paired with a new 2094104412 MAIN SHAFT or a 2094304054 MAIN SHAFT, this washer restores factory-specified end play and protects the gear train from destructive thrust loads.
Symptoms of Failure
- Transmission oil seepage at shaft seals: A worn 0730.108.553 washer allows excessive axial movement, distorting seal lips and causing slow fluid leaks around the output flange.
- Intermittent gear engagement difficulty: When this washer loses its original thickness, the 2094106010 SHIFT SYSTEM cannot align synchronizers correctly, leading to grinding noises during shifting.
- Vibration during low-speed operation: Deteriorated washer material permits radial play in the 2094206001 GEARSHIFT SHAFT assembly, producing a low-frequency shudder under load.
- Metallic debris in transmission fluid: As the washer surface flakes, hardened particles circulate through the hydraulic system, accelerating wear on clutches and bearings.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.108.553 |
| Material | Hardened spring steel (DIN 17222) |
| Outer Diameter | 58.0 mm |
| Inner Diameter | 32.5 mm |
| Thickness | 2.5 mm |
| Surface Hardness | HRC 45–50 |
| Weight | 0.018 kg |
| OEM Reference | ZF 0730.108.553 |
Compatibility
This washer is an integral component in ZF’s WG series powershift transmissions, specifically the WG180, WG200, and WG250 models used in wheel loaders, graders, and compactors. It also appears in certain ZF 4WG-200 and 6WG-200 variants. Always verify the stack height with a new 0630513070 SNAP RING to confirm correct preload after installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from engine to gear cluster |
| 2094304054 | MAIN SHAFT | Alternate spline configuration for WG200 |
| 2094106010 | SHIFT SYSTEM | Hydraulic valve body for clutch modulation |
| 2094206001 | GEARSHIFT SHAFT | Mechanical linkage for gear selection |
| 2094306053 | GEARSHIFT SHAFT | Replacement shaft for 4-speed units |
| 0630513070 | SNAP RING | Secures washer and shaft in housing bore |
| 2094306019 | WASHER | Thicker variant for end-play adjustment |
| 0732040444 | COMPRESSION SPRING | Provides preload to shift fork assembly |
| 0732040728 | COMPRESSION SPRING | Higher rate spring for heavy-duty cycles |
| 2093206001 | BUSH | Wear sleeve for gearshift shaft support |
Frequently Asked Questions
Q: Can I reuse the 0730.108.553 washer during a rebuild?
A: ZF recommends always replacing this washer with a new OEM unit. The hardened steel surface work-hardens in service, and reusing it can lead to incorrect axial clearance and premature seal failure.
Q: How do I know if this washer fits my WG180 transmission?
A: Measure the inner diameter of the shaft bore and the outer diameter of the main shaft shoulder. The 0730.108.553 is designed for 32.5 mm shaft diameters; if your unit uses a 35 mm shaft, select the 2094306019 WASHER instead.
Q: What torque should I apply to the shaft nut when installing this washer?
A: Torque specifications vary by transmission model. For WG200 units, tighten the main shaft nut to 180 N·m, then verify end play with a dial indicator. Always consult the ZF service manual for your specific serial number.
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Phone: +86 158 2286 3467 |
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