Overview
The ZF 0730.304.069 SHIM is a precision-engineered spacer component designed to establish critical axial clearances within the differential and final drive assemblies of heavy-duty construction machinery transmissions. This OEM genuine part, identified by SKU 0730.304.069, sits between the bearing journals and gear faces to absorb manufacturing tolerances and maintain optimal preload. By ensuring the correct shim thickness is installed, technicians prevent unwanted gear movement and maintain the precise alignment required for long-term durability in demanding off-highway applications.
Symptoms of Failure
- Excessive differential backlash – When the shim compresses or wears, you will notice a pronounced clunking noise when shifting between forward and reverse, often searched as “ZF transmission gear lash repair.”
- Premature bearing wear – A collapsed 0730.304.069 shim allows the 0750117075: TAPER ROLLER BEARING to lose its preload, leading to radial play and eventual bearing seizure.
- Oil contamination from metal debris – Worn shim material flakes into the lubricant, causing accelerated wear on the 5838109012: DIFFERENTIAL assembly and clogging hydraulic filters.
- Intermittent drive loss – In severe cases, the shim failure allows the 2093209023: DIFFERENTIAL to shift axially, causing intermittent gear disengagement under load.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 0730.304.069 |
| Material | Case-hardened alloy steel (C45E + case) |
| Outer Diameter | 68.0 mm |
| Inner Diameter | 42.5 mm |
| Thickness | 1.50 mm (selective fit) |
| Weight | 0.032 kg |
| Hardness | 58-62 HRC |
| Surface Finish | Ground, Ra ≤ 0.8 µm |
Compatibility
This shim is engineered for use in ZF WG180, WG200, and WG250 series powershift transmissions commonly found in wheel loaders, graders, and dump trucks. It is a direct fit for the differential carrier assembly where the 5838300626: DIFFERENTIAL HOUSING interfaces with the output shaft. Always verify the selective fit thickness against your transmission’s service manual before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on differential shaft |
| 2093209023 | DIFFERENTIAL | Secondary differential unit for tandem axles |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses and supports differential gears |
| 0631329088 | SPRING PIN | Secures shim and gear alignment |
| 5838300811 | THRUST WASHER | Reduces friction between rotating gears |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 5838300633 | AXLE | Drives wheel hubs from differential |
| 5838300753 | THRUST WASHER | Controls axial end-play in differential |
| 5838300818 | THRUST WASHER | Provides wear surface for gear thrust faces |
Frequently Asked Questions
Q: Can I reuse the 0730.304.069 shim after disassembly?
A: No. ZF recommends replacing this shim whenever the differential or bearing assembly is disassembled. The shim deforms plastically during initial torqueing and cannot reliably maintain preload if reused.
Q: How do I measure the correct shim thickness for my transmission?
A: Use a depth micrometer to measure the bearing bore depth and gear stack height. Subtract the stack height from the bore depth to determine the required shim thickness. Always select the closest available shim from the ZF selective fit range (0.10 mm increments).
Q: Does this shim work with the 5838300626 differential housing?
A: Yes, the 0730.304.069 shim is specifically designed to seat against the inner shoulder of the 5838300626: DIFFERENTIAL HOUSING to position the taper roller bearing correctly.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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