Overview
The ZF 0730.000.258 SHIM is a precision-engineered adjustment component specifically designed for the WG 65 series transmission. This OEM genuine part, identified by SKU 0730.000.258, is installed between the transmission housing and the bearing assembly to establish precise axial clearance and preload. By compensating for manufacturing tolerances, this shim ensures optimal gear mesh alignment and load distribution across the planetary gear sets. It is a critical element for maintaining the structural integrity of the WG65 gearbox, directly influencing the longevity of the TRANSMISSION HOUSING and the rotating components it supports.
Symptoms of Failure
When the ZF 0730.000.258 SHIM wears or deforms, it can cause several distinct operational issues. Look for these specific failure symptoms to diagnose problems early:
- Excessive axial play in the output shaft: A worn shim allows the shaft to move back and forth, leading to gear misalignment and harsh shifting.
- Low-frequency gear whine under load: Incorrect clearance from a collapsed shim creates a constant, deep humming noise during acceleration, often searched as “ZF transmission whining noise fix.”
- Premature bearing failure: Without proper shim thickness, bearings experience uneven loading, resulting in metallic debris in the oil filter.
- Oil leaks at the housing joint: Vibration caused by loose internal clearances can compromise the seal between the TRANSMISSION HOUSING and the cover plate.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.000.258 |
| Material | Case-hardened steel (DIN 1.7131) |
| Thickness | 0.50 mm (nominal) |
| Outer Diameter | 85.0 mm |
| Inner Diameter | 62.0 mm |
| Weight | 18 grams |
| OEM Reference | ZF 0730.000.258 |
| Surface Finish | Ground, Ra 0.8 µm |
Compatibility
This shim is a standard component within the ZF WG series modular transmission family. It is primarily used in the WG65 series, but it also fits the WG180, WG200, and WG250 models where similar planetary carrier shimming is required. Always verify the required shim stack thickness using the factory service manual, as multiple shims may be stacked. During installation, ensure the HEXAGON SCREW (0636011038) and HEXAGON SCREW (0636011118) are torqued to specification to secure the housing cover. For final assembly of the clutch pack, the HEXAGON SCREW (0636016015) is also required.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 0636011038 | HEXAGON SCREW | Fastener for housing cover |
| 0636011118 | HEXAGON SCREW | Fastener for bearing retainer |
| 0636016015 | HEXAGON SCREW | Fastener for clutch assembly |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing |
| 0634313118 | O-RING | Seal for oil passage |
| 0636304019 | SCREW PLUG | Closes oil drain port |
| 0634801152 | SEALING RING | Prevents fluid leaks |
| 0732611049 | FILTER INSERT | Hydraulic oil filtration |
| 0634303718 | O-RING | Seal for filter housing |
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