Overview
The ZF 0730.110.075 WASHER is a precision-engineered OEM genuine component designed to maintain critical axial clearances within heavy-duty construction machinery transmissions. This hardened steel washer sits between planetary gear sets and the differential housing assembly, acting as a load-bearing shim that prevents metal-on-metal contact during high-torque operation. As an integral part of the lubrication circuit, the 0730.110.075 ensures consistent oil film distribution across rotating assemblies. When paired with a 5838109009: DIFFERENTIAL, this washer stabilizes gear mesh patterns and extends service intervals in ZF drivetrains.
Symptoms of Failure
- Transmission oil seepage at axle interfaces – A worn 0730.110.075 washer allows excessive end-play, breaking the seal between the differential housing and output shaft, causing visible oil leaks around the bell housing.
- Intermittent gear slippage under load – When this thrust washer loses its precise thickness, axial clearance increases, leading to momentary loss of torque transfer during excavation or grading operations.
- Metallic grinding noise during deceleration – Failed washers permit the 0750117075: TAPER ROLLER BEARING to contact the housing directly, producing a distinct high-pitched whine that worsens as the transmission warms up.
- Vibration in low-gear operation – Uneven washer wear creates micro-movements in the planetary carrier, transmitting harsh vibrations through the chassis during start-stop cycles.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.110.075 |
| Material | Case-hardened alloy steel (DIN 1.7131) |
| Outer Diameter | 75.0 mm |
| Inner Diameter | 55.2 mm |
| Thickness | 2.50 mm ±0.05 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.110.075 |
| Surface Finish | Ground, phosphate-coated |
Compatibility
This washer is engineered for ZF WG180, WG200, and WG210 series transmissions commonly found in wheel loaders, excavators, and telehandlers. It directly interfaces with the 2093209023: DIFFERENTIAL assembly and the 5838300626: DIFFERENTIAL HOUSING. Compatible with ZF 4WG-180, 4WG-200, and 4WG-210 models produced after 2005. Always verify axle configuration before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109009 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads |
| 2093209023 | DIFFERENTIAL | Secondary torque split unit |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses gear set and bearings |
| 0631329088 | SPRING PIN | Secures shift fork alignment |
| 5838300811 | THRUST WASHER | Controls axial play in planetary set |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 5838300633 | AXLE | Drives final reduction gears |
| 5838300753 | THRUST WASHER | Spacer for differential side gears |
| 5838300818 | THRUST WASHER | Adjusts pinion gear depth |
Frequently Asked Questions
Q: Can I reuse the 0730.110.075 washer during a transmission rebuild?
A: No. This washer is a single-use component due to its crush-type design. Reusing it will result in incorrect preload and rapid bearing failure. Always install a new OEM washer with every differential service.
Q: How do I verify the correct washer thickness for my ZF transmission?
A: Measure the existing axial clearance using a dial indicator. The 0730.110.075 provides 0.10-0.15 mm of preload. If clearance exceeds 0.30 mm, replace both the washer and the associated taper roller bearing simultaneously.
Q: Does this washer fit ZF 6WG transmissions?
A: No. The 0730.110.075 is specifically designed for WG180/WG200/WG210 series. For 6WG models, use part number 5838300811 or 5838300753 depending on the planetary stage.
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