Overview
This genuine ZF 0730.007.508 WASHER is a precision-engineered shim component designed to maintain critical axial clearances within heavy-duty construction machinery transmissions. Positioned between planetary gear sets and bearing assemblies, this OEM part ensures proper load distribution and prevents metal-on-metal contact inside the gear train. The SKU 0730.007.508 is manufactured to exact ZF tolerances, making it essential for rebuilding or servicing ZF drivelines used in wheel loaders, graders, and excavators. When paired with a 5838109012: DIFFERENTIAL, this washer helps stabilize the entire differential carrier assembly under high torque conditions.
Symptoms of Failure
- Excessive axial play in the output shaft – A worn 0730.007.508 washer allows the gear cluster to shift, causing noticeable clunking during direction changes. Search “ZF transmission end float symptoms” for related diagnostics.
- Low-frequency gear whine under load – When this washer loses its precise thickness, gear mesh patterns become misaligned, producing a distinct howl from the transmission housing. This is a common “ZF washer failure noise” indicator.
- Metallic debris in transmission fluid – As the hardened steel surface wears, fine particles contaminate the oil. If you find silver flakes during a drain, inspect the 0750117075: TAPER ROLLER BEARING and this washer simultaneously.
- Intermittent clutch engagement delay – Axial clearance changes affect hydraulic piston travel, leading to hesitation when shifting between forward and reverse gears.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.007.508 |
| Material | Hardened Spring Steel (DIN 1.8159) |
| Outer Diameter | 68.5 mm |
| Inner Diameter | 42.0 mm |
| Thickness | 2.50 mm (selective fit tolerance ±0.02 mm) |
| Weight | 0.045 kg |
| Surface Finish | Phosphate coated, oiled |
| OEM Reference | ZF 0730.007.508 |
Compatibility
This washer is a standard component in ZF WG180, WG200, and WG310 series transmissions commonly installed in construction machinery. It also appears in select ZF TC-Tronic and Ecolife drivelines used in material handlers and telescopic handlers. For complete differential rebuilds, always verify fitment with the 2093209023: DIFFERENTIAL and the 5838300626: DIFFERENTIAL HOUSING to ensure proper shim stack height.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to drive axles |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads |
| 2093209023 | DIFFERENTIAL | Rear differential assembly |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears |
| 0631329088 | SPRING PIN | Secures shift fork position |
| 5838300811 | THRUST WASHER | Controls axial clearance in gear sets |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 5838300633 | AXLE | Driveshaft component |
| 5838300753 | THRUST WASHER | Secondary axial shim |
| 5838300818 | THRUST WASHER | Adjusts differential preload |
Frequently Asked Questions
Q: Can I reuse the 0730.007.508 washer during a rebuild?
A: No. This is a selective-fit shim that deforms slightly under torque. Always replace with a new OEM washer to maintain proper end float. Reusing it risks premature bearing failure.
Q: How do I measure the correct thickness for my ZF transmission?
A: Use a depth micrometer to measure the bearing bore depth, then subtract the bearing width. The 0730.007.508 is typically used in stacks; combine it with 5838300811: THRUST WASHER to achieve 0.05–0.15 mm axial play.
Q: Will this washer fit a ZF WG180 transmission from 1998?
A: Yes, the 0730.007.508 is dimensionally identical across all WG180, WG200, and early WG310 series. Always verify by comparing the inner diameter against your existing shim.
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