Overview
The ZF 4699.305.057 SHIM RING is a precision-engineered OEM genuine component designed to establish critical axial clearances within heavy-duty ZF construction machinery transmissions. This shim ring sits between the transmission housing and the planetary gear set, ensuring correct preload and alignment of rotating assemblies. By maintaining exact spacing, the 4699.305.057 prevents gear train binding and reduces wear on adjacent components. This part is frequently specified during rebuilds of ZF WG-series transmissions, where it works in concert with the 4699101086 HOUSING and the 4699301223 HOUSING to secure the internal gear stack.
Symptoms of Failure
- Transmission gear slippage under load: A worn or collapsed shim ring allows excessive end-play, causing the clutch packs to lose clamping force and slip during heavy operation.
- Metallic grinding noises from the bell housing: Insufficient axial clearance leads to gear tooth interference, producing a distinct grinding sound when shifting between forward and reverse.
- Oil leaks at the housing joint: If the shim ring deforms, it can distort the mating surface between the 0636302022 SCREW PLUG and the housing, creating a path for transmission fluid to escape.
- Vibration during low-speed maneuvering: A fatigued shim ring fails to dampen axial thrust, transmitting vibration through the driveline during loader or excavator operation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4699.305.057 |
| Material | Hardened spring steel (C67S or equivalent) |
| Outer Diameter | ~105 mm (estimated) |
| Inner Diameter | ~88 mm (estimated) |
| Thickness | 1.5 mm (selective fit range) |
| Weight | ~0.045 kg |
| OEM Reference | ZF 4699.305.057 |
| Surface Finish | Phosphate coated for corrosion resistance |
Compatibility
This shim ring is primarily used in ZF WG180, WG200, and WG210 series transmissions found in wheel loaders, telehandlers, and excavators. It also appears in select ZF 4WG-200 and 6WG-200 power shift transmissions. Always verify the selective fit thickness during assembly, as the 4699.305.057 is often paired with the 0501319149 SCREW PLUG to lock the adjustment. For complete rebuilds, the 0634801038 SEALING RING and 0730365801 TYPE PLATE should be replaced simultaneously to ensure leak-free operation and correct identification.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101086 | HOUSING | Main transmission casing that encloses the gear train |
| 4699301223 | HOUSING | Intermediate housing supporting planetary carriers |
| 0636302022 | SCREW PLUG | Seals oil passages in the valve body |
| 0501319149 | SCREW PLUG | Locks shim ring adjustment in place |
| 0634801038 | SEALING RING | Prevents oil bypass between housing sections |
| 0730365801 | TYPE PLATE | Identification tag for transmission model |
| 0501323165 | SHAFT SEAL | Output shaft oil seal |
| 4699301222 | COVER | Access cover for clutch pack inspection |
| 0634303996 | O-RING | Static seal for cover plate |
| 0630513060 | SNAP RING | Retains bearing on output shaft |
