Overview
The ZF 0730.109.625 WASHER is a precision-engineered OEM genuine component designed to maintain critical axial clearances within the differential and final drive assemblies of heavy-duty construction machinery transmissions. This hardened steel washer acts as a load-bearing shim, preventing metal-to-metal contact between rotating gears and stationary housings. The part number 0730.109.625 is specifically calibrated to ensure proper preload on the 0750117075: TAPER ROLLER BEARING, which is essential for smooth power transfer under extreme torque loads. Without this washer, the entire differential assembly risks catastrophic misalignment.
Symptoms of Failure
- Transmission whining noise under load: A worn 0730.109.625 washer allows excessive end-play in the differential, causing the 5838109012: DIFFERENTIAL to generate a high-pitched metallic whine during acceleration or grading operations.
- Oil leaks from the axle housing seal: As the washer compresses or fractures, the 5838300626: DIFFERENTIAL HOUSING shifts out of alignment, breaking the seal and causing gear oil to weep from the flange joint.
- Intermittent gear slipping in low range: Loss of washer thickness reduces bearing preload on the 2093209023: DIFFERENTIAL assembly, leading to momentary power loss when transitioning from forward to reverse.
- Vibration through the driveline: A collapsed washer creates uneven tooth contact patterns, transmitting harsh vibration into the cab during steady-state highway travel.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.109.625 |
| Material | Hardened Spring Steel (DIN 17222) |
| Inner Diameter | 62.5 mm |
| Outer Diameter | 90.0 mm |
| Thickness | 2.5 mm (nominal) |
| Weight | 0.085 kg |
| OEM Reference | ZF 0730.109.625 |
| Surface Finish | Phosphate coated, oiled |
Compatibility
This washer is a direct-fit component for ZF WG180, WG200, and WG250 series powershift transmissions commonly found in wheel loaders, graders, and dump trucks. It also serves the differential carrier assemblies in ZF TC-Tronic and Ecolife drivelines used in construction machinery. Always verify the 5838300811: THRUST WASHER and 5838300721: AXLE BEVEL GEAR condition when replacing this part.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on differential shaft |
| 2093209023 | DIFFERENTIAL | Secondary differential for planetary gear sets |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses and aligns differential gears |
| 0631329088 | SPRING PIN | Secures washer and gear alignment |
| 5838300811 | THRUST WASHER | Reduces friction on bevel gear face |
| 5838300721 | AXLE BEVEL GEAR | Transfers power from differential to axle shaft |
| 5838300633 | AXLE | Drives wheel hub assembly |
| 5838300753 | THRUST WASHER | Spacer for differential side gears |
| 5838300818 | THRUST WASHER | Adjusts pinion gear depth |
Frequently Asked Questions
Q: Can I reuse the 0730.109.625 washer during a rebuild?
A: No. This washer is a single-use crush-type shim. Once compressed to set bearing preload, it loses its dimensional integrity. Always install a new OEM washer with every differential overhaul.
Q: How do I know if this washer fits my ZF WG200 transmission?
A: The 0730.109.625 is standard in WG200 series differentials built after 2015. Check your transmission serial number against ZF parts catalog. The 5838300633: AXLE spline count must also match for correct installation.
Q: What torque specification applies to the differential housing bolts when installing this washer?
A: Tighten the 5838300626: DIFFERENTIAL HOUSING bolts to 120 Nm in a cross-pattern sequence, then rotate the differential to seat the washer before final torque to 150 Nm.
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Phone: +86 158 2286 3467 |
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