Overview
The ZF 0730.109.575 SHIM is a precision-engineered OEM genuine spacer component designed to establish exact axial clearances within heavy-duty ZF powershift transmissions. Positioned between rotating assemblies and stationary housings, this shim compensates for manufacturing tolerances and thermal expansion, ensuring that gear trains and clutch packs maintain their designed end-play. The SKU 0730.109.575 is critical for eliminating unwanted movement that leads to premature bearing failure. When rebuilding a transmission, this shim is often replaced alongside the 2094104412: MAIN SHAFT to guarantee that the shaft sits at the correct depth within the housing.
Symptoms of Failure
- Excessive axial play in the main shaft: A worn or incorrectly selected shim allows the 2094304054: MAIN SHAFT to drift forward and backward, causing inconsistent clutch engagement and a noticeable “clunk” when shifting between forward and reverse.
- Low-frequency gear whine under load: Insufficient shim thickness reduces bearing preload, allowing the gear teeth to mesh at incorrect angles. This produces a distinct whining noise that intensifies as the transmission oil warms up.
- Oil contamination with metallic particles: As the shim wears, it sheds fine steel debris into the lubrication circuit. This often appears as a silver sheen on the dipstick and accelerates wear on the 2094106010: SHIFT SYSTEM components.
- Hard shifting or gear hang-up: Axial misalignment caused by a collapsed shim prevents the 2094206001: GEARSHIFT SHAFT from fully engaging the shift forks, leading to delayed or incomplete gear changes.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 0730.109.575 |
| Material | Case-hardened spring steel (C67S / 1.1248) |
| Inner Diameter | 38.0 mm |
| Outer Diameter | 62.0 mm |
| Thickness | 1.50 mm (selective fit range: 1.45–1.55 mm) |
| Weight | 18 grams |
| Surface Hardness | HRC 58–62 |
| OEM Reference | ZF 0730.109.575 |
Compatibility
This shim is specifically engineered for ZF’s WG series powershift transmissions commonly found in construction machinery. It is a direct fit for the WG180, WG200, and WG211 models used in wheel loaders, telehandlers, and backhoe loaders. It also applies to the 4WG-200 and 6WG-200 variants. Always verify the thickness requirement using the factory service manual, as selective shimming is required when installing a new 2094304054: MAIN SHAFT or 2094206001: GEARSHIFT SHAFT.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from the torque converter to the planetary gear sets |
| 2094304054 | MAIN SHAFT | Secondary shaft supporting clutch pack hubs |
| 2094106010 | SHIFT SYSTEM | Hydraulic valve body assembly controlling clutch pressure |
| 2094206001 | GEARSHIFT SHAFT | Mechanical link between shift lever and valve spools |
| 2094306053 | GEARSHIFT SHAFT | Alternate-length shaft for WG200 models |
| 0630513070 | SNAP RING | Retains bearings and gears on the main shaft |
| 2094306019 | WASHER | Thrust washer for axial load distribution |
| 0732040444 | COMPRESSION SPRING | Returns shift rail to neutral position |
| 0732040728 | COMPRESSION SPRING | Higher-rate spring for detent mechanism |
| 2093206001 | BUSH | Guide bushing for the gearshift shaft |
Frequently Asked Questions
Q: Can I reuse the old shim if it looks undamaged?
No. Shims work-harden over time and lose their precise thickness. Always install a new 0730.109.575 shim when replacing bearings or the 2094104412: MAIN SHAFT to avoid repeating the repair.
Q: How do I measure the correct shim thickness?
Assemble the transmission without the shim, measure the gap with a feeler gauge between the bearing race and housing shoulder, then select the shim that brings end-play to 0.05–0.15 mm. The 0730.109.575 is a 1.50 mm baseline; adjust up or down using ZF’s selective shim kit.
Q: Will this shim work in a ZF 4WG-180 transmission?
Yes. The 0730.109.575 is the standard shim for the main shaft bearing pack in all WG180, WG200, and WG211 models. Verify your transmission serial number against the ZF parts catalog to confirm.
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