Overview
This ZF 0730.003.739 WASHER is an OEM genuine shim component engineered for precise axial clearance control within heavy-duty construction machinery transmissions. Positioned between rotating assemblies and stationary housings, this hardened steel washer maintains critical end-play tolerances that protect gear teeth and bearing surfaces from premature wear. The SKU 0730.003.739 is specifically designed to interface with the main shaft cluster, ensuring consistent load distribution during high-torque operations in wheel loaders and graders. When installed alongside the 2094104412: MAIN SHAFT and the 2094304054: MAIN SHAFT, this washer prevents metal-on-metal contact that would otherwise degrade transmission efficiency.
Symptoms of Failure
- Transmission oil seepage at shaft seals: When the 0730.003.739 washer wears beyond tolerance, excessive axial play forces oil past seals, creating visible drips around the bell housing.
- Intermittent gear engagement hesitation: A worn washer allows the 2094106010: SHIFT SYSTEM to misalign, causing delayed or rough shifting under load.
- Metallic grinding noise during deceleration: Reduced washer thickness permits the 2094206001: GEARSHIFT SHAFT to contact housing walls, producing a distinct scraping sound.
- Vibration through the gear lever: Uneven washer compression destabilizes the main shaft assembly, transmitting harmonics into the operator cabin.
Technical Specifications
| Parameter | Value |
|---|---|
| Inner Diameter | 38.0 mm |
| Outer Diameter | 52.0 mm |
| Thickness | 2.5 mm |
| Material | Case-hardened spring steel (C67S) |
| Surface Finish | Phosphate coated, oiled |
| Weight | 18 grams |
| OEM Reference | ZF 0730.003.739 |
| Hardness | HRC 48-52 |
Compatibility
This genuine ZF washer is a standard fitment for the WG180, WG200, and WG240 series power shift transmissions commonly found in Volvo, Liebherr, and Caterpillar construction machinery. It also applies to the 4WG-200 and 5WG-180 variants used in articulated dump trucks and crawler dozers. Always verify the washer stack height against the 0630513070: SNAP RING groove depth during rebuild procedures to ensure correct preload.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from converter to planetary sets |
| 2094304054 | MAIN SHAFT | Secondary shaft for high-range gear engagement |
| 2094106010 | SHIFT SYSTEM | Hydraulic valve body that directs clutch pressure |
| 2094206001 | GEARSHIFT SHAFT | Mechanical linkage from shift lever to valve spool |
| 2094306053 | GEARSHIFT SHAFT | Reverse gear selector shaft with detent grooves |
| 0630513070 | SNAP RING | Secures washer stack and bearing on main shaft |
| 2094306019 | WASHER | Thicker shim for adjusting planetary gear end-play |
| 0732040444 | COMPRESSION SPRING | Returns shift fork to neutral position |
| 0732040728 | COMPRESSION SPRING | Higher-rate spring for clutch pack preload |
| 2093206001 | BUSH | Bronze-lined bearing for layshaft support |
Frequently Asked Questions
Q: Can I reuse the 0730.003.739 washer during a transmission rebuild?
A: ZF engineering recommends always replacing this washer with a new OEM part. The hardened steel surface work-hardens during service, and reused washers often fail to maintain proper clamping force, leading to premature 2094304054: MAIN SHAFT bearing wear.
Q: How do I measure if this washer is worn?
A: Use a micrometer to measure thickness at three points around the circumference. If any reading is below 2.35 mm or varies by more than 0.05 mm, the washer must be replaced. Always pair it with a new 0630513070: SNAP RING to ensure proper groove retention.
Q: Will this washer fit the ZF 4WG-310 transmission?
A: No. The 0730.003.739 is dimensionally specific to the WG180/200/240 family. For the 4WG-310, use the 2094306019: WASHER which has a larger outer diameter to accommodate the heavier planetary carrier.
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Phone: +86 158 2286 3467 |
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