Overview
The ZF 0730.100.751 SPACER WASHER is a precision-engineered shim component designed for the WG 65 series of heavy-duty transmissions. This OEM genuine part sits between the planetary gear set and the transmission housing, establishing the critical axial clearance required for smooth gear engagement. The SKU 0730.100.751 ensures exact dimensional tolerances to maintain proper preload on the bearing assemblies. When installed alongside the 4616101059 TRANSMISSION HOUSING, this spacer washer prevents metal-to-metal contact and distributes clamping forces evenly during high-torque operation.
Symptoms of Failure
- Oil leaks from the transmission housing joint: A worn spacer washer allows the housing to shift, breaking the seal created by the 0634313118 O-RING and causing fluid seepage around the mating surfaces.
- Gear slipping under load: When the spacer washer compresses beyond its service limit, axial play increases, leading to incomplete clutch pack engagement and intermittent power loss during acceleration.
- Abnormal whining or grinding noise: Excessive clearance from a deformed spacer washer permits the planetary gears to contact the housing, producing a high-pitched metallic sound that worsens with RPM.
- Hard shifting between forward and reverse: Loss of proper shim thickness alters the hydraulic valve timing, resulting in delayed or harsh gear changes that feel like a “clunk” during direction shifts.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.100.751 |
| Material | Hardened Spring Steel (C67S) |
| Outer Diameter | 65.0 mm |
| Inner Diameter | 42.5 mm |
| Thickness | 2.0 mm |
| Weight | 18 g |
| OEM Reference | ZF 0730.100.751 |
| Surface Finish | Zinc-Nickel Plated |
| Hardness | HRC 45-50 |
Compatibility
This spacer washer is a direct fit for the ZF WG 65 transmission series, which includes models such as the WG65, WG80, WG120, WG150, WG180, and WG200. It is also used in the WG 65 variant found in off-highway trucks, wheel loaders, and agricultural tractors. For proper installation, ensure the mating surfaces are clean and that the 0636011038 HEXAGON SCREW, 0636011118 HEXAGON SCREW, and 0636016015 HEXAGON SCREW are torqued to factory specifications to prevent distortion of the washer during reassembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Encloses the gear train and supports bearing bores |
| 0636011038 | HEXAGON SCREW | Secures housing halves with M12 thread |
| 0636011118 | HEXAGON SCREW | Fastens the spacer washer to the output flange |
| 0636016015 | HEXAGON SCREW | Mounts the valve body to the housing |
| 0631306085 | CYLINDRICAL PIN | Aligns housing and spacer washer during assembly |
| 0634313118 | O-RING | Seals the spacer washer bore against oil leakage |
| 0636304019 | SCREW PLUG | Closes the oil gallery port in the housing |
| 0634801152 | SEALING RING | Prevents fluid bypass around the screw plug |
| 0732611049 | FILTER INSERT | Traps debris in the transmission oil circuit |
| 0634303718 | O-RING | Seals the filter housing to the transmission case |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
