Overview
This genuine ZF 0730.110.078 WASHER is a precision-engineered shim component designed to maintain critical axial clearances within heavy-duty construction machinery transmissions. Positioned between rotating gear sets and stationary housings, this OEM part ensures proper load distribution and prevents metal-on-metal contact in high-torque applications. The SKU 0730.110.078 is commonly found in the differential and planetary gear assemblies of ZF drivelines, where it works in concert with the 5838109009: DIFFERENTIAL and 0750117075: TAPER ROLLER BEARING to achieve optimal gear mesh alignment.
Symptoms of Failure
- Transmission oil seepage at axle housing seals: When the 0730.110.078 washer wears beyond tolerance, increased axial play forces lubricant past seals, leaving visible drips under the machine.
- Intermittent gear slipping under load: A degraded washer allows the 2093209023: DIFFERENTIAL to shift laterally, causing momentary power loss during excavation or grading operations.
- Metallic grinding noise from the differential housing: Worn clearance permits the 5838300626: DIFFERENTIAL HOUSING to contact rotating gears, producing a distinct high-pitched scraping sound at low RPM.
- Increased backlash in the driveline: Operators may notice a delayed engagement or “clunk” when shifting between forward and reverse, indicating excessive end-play that this washer is designed to eliminate.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.110.078 |
| Material | Case-hardened steel (DIN 1.3505 equivalent) |
| Outer Diameter | 78.0 mm |
| Inner Diameter | 60.2 mm |
| Thickness | 2.5 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.110.078 |
| Hardness | HRC 58-62 |
Compatibility
This washer is engineered for ZF heavy-duty transmissions commonly deployed in construction machinery. It is a direct fit for the WG180, WG200, and WG210 series power shift transmissions. Additionally, it is used in the differential sections of ZF 4WG-200 and 4WG-310 models. Always verify the part number 0730.110.078 against your transmission’s parts manual 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 differential assembly |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears |
| 0631329088 | SPRING PIN | Secures shift fork position |
| 5838300811 | THRUST WASHER | Controls axial clearance |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 5838300633 | AXLE | Rotates with differential output |
| 5838300753 | THRUST WASHER | Reduces friction on gear faces |
| 5838300818 | THRUST WASHER | Adjusts differential side play |
Frequently Asked Questions
Q: Can I reuse the 0730.110.078 washer during a transmission rebuild?
A: No. This is a single-use crush washer that deforms during initial torque application. Always replace it with a new OEM part to maintain proper preload on the differential bearings.
Q: How do I confirm this washer fits my ZF WG200 transmission?
A: Locate the transmission serial number plate on the housing. Cross-reference the model code with the ZF parts catalog. The 0730.110.078 is listed under the differential section for all WG200 variants built after 2005.
Q: What torque specification applies to the nut that compresses this washer?
A: For the differential pinion nut, ZF specifies 250 Nm ± 10 Nm. Always use a new 0631329088: SPRING PIN to lock the nut after torquing.
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Phone: +86 158 2286 3467 |
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