Overview
The ZF 0730.106.138 WASHER is a precision-engineered OEM genuine component designed to maintain critical axial clearances within the differential assembly of heavy-duty construction machinery transmissions. This hardened steel washer sits between rotating gear sets and the housing, absorbing thrust loads and preventing metal-on-metal contact that leads to premature wear. As a factory-specified shim, the SKU 0730.106.138 ensures exact spacing for optimal gear mesh and load distribution. When installed alongside a 5838109012: DIFFERENTIAL or a 2093209023: DIFFERENTIAL, this washer is critical for maintaining drivetrain integrity under extreme loads.
Symptoms of Failure
- Transmission oil leaks from axle seals: A worn 0730.106.138 washer allows excessive end-play, pushing the 0750117075: TAPER ROLLER BEARING out of alignment and damaging seal surfaces.
- Gear slipping under load in construction equipment: Thrust washer degradation reduces clamping force on the differential gears, causing intermittent power loss during excavation or grading operations.
- Metallic grinding noise from the transmission housing: When the washer thickness decreases below tolerance, the 5838300626: DIFFERENTIAL HOUSING contacts rotating components, producing a distinct scraping sound.
- Increased backlash in the driveline: Worn washers create measurable play between the differential and axle shafts, leading to harsh engagement and vibration during acceleration.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.106.138 |
| Material | Hardened Carbon Steel (C45E + Induction Hardened) |
| Outer Diameter | 138 mm |
| Inner Diameter | 106 mm |
| Thickness | 3.0 mm (nominal) |
| Weight | 0.18 kg |
| Surface Hardness | HRC 58-62 |
| OEM Reference | ZF 0730.106.138 |
Compatibility
This thrust washer is primarily used in ZF WG180, WG200, and WG310 series powershift transmissions found in wheel loaders, graders, and dump trucks. It also fits select ZF TC-Tronic and Ecolite models where the differential assembly requires a 106mm inner diameter shim. Always verify fitment by cross-referencing your transmission serial number with the 0730.106.138 specification.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation |
| 2093209023 | DIFFERENTIAL | Secondary differential for multi-axle drives |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gear set |
| 0631329088 | SPRING PIN | Secures washer alignment |
| 5838300811 | THRUST WASHER | Axial load bearing surface |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 5838300633 | AXLE | Drives wheel hubs |
| 5838300753 | THRUST WASHER | Secondary axial shim |
| 5838300818 | THRUST WASHER | Adjustable thickness shim |
Frequently Asked Questions
Q: Can I reuse the 0730.106.138 washer during a rebuild?
A: No. ZF specifies this as a one-time-use component because the hardened surface deforms microscopically during installation. Reusing it risks incorrect preload and accelerated bearing wear.
Q: How do I measure if my current washer is worn?
A: Use a micrometer to check thickness at three points around the circumference. If any measurement is below 2.85 mm, replace immediately. Also inspect for scoring or edge chipping.
Q: Will this washer fit a ZF WG180 transmission from a 1998 model?
A: Yes, the 0730.106.138 is backward-compatible with all WG180 series transmissions using the 106mm differential shaft. However, verify your housing part number matches the 5838300626: DIFFERENTIAL HOUSING to ensure proper clearance.
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Phone: +86 158 2286 3467 |
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