Overview
This ZF 0730.007.799 WASHER is an OEM genuine shim component engineered for precise axial clearance control within heavy-duty construction machinery transmissions. Positioned between the differential housing and the bevel gear set, this hardened steel washer maintains critical end-play tolerances that prevent gear train misalignment. The SKU 0730.007.799 is a factory-specified part for ZF power dividers, ensuring that load distribution remains even across the 5838109012: DIFFERENTIAL assembly. Without this precise shim, the entire planetary gear system experiences accelerated wear, making it a non-negotiable component during any transmission overhaul.
Symptoms of Failure
- Transmission oil seepage at the axle flange: A worn 0730.007.799 washer allows excessive differential housing movement, breaking the seal between the 5838300626: DIFFERENTIAL HOUSING and the main case. This creates visible oil weeping around the output shaft.
- Low-speed gear rumbling or growling: As the washer thickness degrades, the 0750117075: TAPER ROLLER BEARING loses preload, causing a distinct low-frequency growl during forward-reverse shifts in construction equipment.
- Intermittent differential lock engagement failure: Insufficient shim height prevents the 2093209023: DIFFERENTIAL clutch pack from fully compressing, leading to erratic locking in muddy or uneven terrain.
- Metallic debris in transmission fluid: A collapsed washer allows gear teeth to contact the housing, shedding fine steel particles that contaminate the hydraulic circuit.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.007.799 |
| Material | Hardened Spring Steel (C67S) |
| Outer Diameter | 82.5 mm |
| Inner Diameter | 62.0 mm |
| Thickness | 2.50 mm (selective fit) |
| Weight | 0.042 kg |
| OEM Reference | ZF 0730.007.799 |
| Surface Finish | Phosphate coated, deburred |
Compatibility
This washer is dimensionally validated for ZF WG180, WG200, and WG250 series power shift transmissions commonly found in wheel loaders, graders, and dump trucks. It also fits select ZF TC-Tronic off-highway models (TC-180 to TC-250). Always verify the selective thickness requirement using the original differential stack-up procedure. The washer directly interfaces with the 5838300626: DIFFERENTIAL HOUSING bore and the 0750117075: TAPER ROLLER BEARING outer race.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports differential rotational load |
| 2093209023 | DIFFERENTIAL | Secondary differential unit for tandem axles |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses gear set and washer stack |
| 0631329088 | SPRING PIN | Locks differential gear shaft |
| 5838300811 | THRUST WASHER | Reduces axial friction on side gears |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 5838300633 | AXLE | Output shaft for final drive |
| 5838300753 | THRUST WASHER | Spacer for pinion gear preload |
| 5838300818 | THRUST WASHER | Adjusts differential side clearance |
Frequently Asked Questions
Q: Can I reuse the 0730.007.799 washer during a rebuild?
A: No. This is a selective-fit shim that work-hardens and deforms under load. Always replace it with a new OEM washer to restore factory end-play tolerances.
Q: How do I measure the correct washer thickness for my ZF transmission?
A: Use a depth micrometer to measure the differential housing bore depth, then subtract the bearing protrusion. The 0730.007.799 is typically available in 0.05 mm increments for fine adjustment.
Q: Will a worn washer cause the differential to lock up?
A: Yes. Insufficient shim height allows the 2093209023: DIFFERENTIAL to shift axially, jamming the side gears against the housing. This can cause sudden wheel lock during operation.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
