Overview
The ZF 0630.000.297 SHIM RING is a precision-engineered OEM genuine component designed for critical axial clearance adjustment within heavy-duty ZF construction machinery transmissions. This shim ring, identified by SKU 0630.000.297, sits directly between the transmission housing and the bearing cover assembly, ensuring precise preload on planetary gear sets. By maintaining exact tolerances, this part prevents excessive end-play that can lead to gear misalignment and premature bearing wear. For technicians rebuilding a ZF transmission, pairing this shim ring with a new 4699101046: HOUSING and the 4699301017: BEARING COVER is essential for restoring factory-specified clearances.
Symptoms of Failure
When the ZF 0630.000.297 shim ring wears or becomes damaged, operators will notice distinct operational issues. Look for these specific failure symptoms:
- Transmission gear slippage under load – Worn shim rings allow axial movement, causing clutch packs to lose engagement pressure during heavy digging or lifting operations.
- Low-frequency vibration from the drivetrain – Incorrect shim thickness creates uneven gear contact patterns, producing a distinct humming or rumbling noise at specific RPM ranges.
- Oil leaks around the bearing cover interface – A deformed shim ring compromises the seal between the 4699301109: HOUSING and the 4699301085: COVER, allowing transmission fluid to weep past the gasket surface.
- Hard shifting between forward and reverse gears – Excessive axial play prevents proper synchronization, causing delayed or jarring gear engagement.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0630.000.297 |
| Type | Shim Ring / Adjustment Washer |
| Inner Diameter | Approx. 90 mm |
| Outer Diameter | Approx. 120 mm |
| Thickness | 0.5 mm – 2.0 mm (selective fit) |
| Material | Hardened Spring Steel (C67S) |
| Surface Treatment | Phosphate coated for corrosion resistance |
| Weight | Approx. 0.04 kg |
| OEM Reference | ZF 0630.000.297 |
| Compatible Seal Kit | 0634303141: O-RING |
Compatibility
This shim ring is engineered for ZF’s WG series powershift transmissions commonly found in wheel loaders, telehandlers, and excavators. Based on its design as an axial adjustment component, the 0630.000.297 is compatible with the following ZF transmission models:
- ZF WG180 – Used in compact construction loaders
- ZF WG200 – Standard in 3-5 ton wheel loaders
- ZF WG211 – Found in telescopic handlers
- ZF 4WG-200 – Four-speed variant for heavy excavators
Always verify the existing shim thickness before replacement. For complete transmission resealing, consider replacing the 0634309600: SHAFT SEAL and 0637885612: BREATHER simultaneously.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101046 | HOUSING | Main transmission casing |
| 4699301109 | HOUSING | Rear housing section |
| 4699301017 | BEARING COVER | Seals bearing cavity |
| 4699301085 | COVER | Access cover plate |
| 4699301014 | THREAD PROTECTIVE SHIELD | Protects bolt threads |
| 0634303141 | O-RING | Static seal for housings |
| 0734307407 | PROTECTION CAP | Dust cap for ports |
| 0634309600 | SHAFT SEAL | Rotary shaft seal |
| 0637885612 | BREATHER | Pressure equalization valve |
| 0636102023 | CAP SCREW | Fastener for covers |
