Overview
The ZF 1232.304.058 SHIM is a precision-engineered adjustment component designed specifically for the WG 150 series transmission. This OEM genuine shim controls axial clearance and preload within the differential assembly, ensuring optimal gear mesh and load distribution. The SKU 1232.304.058 is a critical element for maintaining the exact tolerances required by ZF drivetrain specifications. It sits between the differential housing and bearing races, directly influencing the performance of the 5838109012: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING.
Symptoms of Failure
- Excessive differential backlash: Worn or incorrect shimming leads to noticeable clunking during gear engagement, especially under load. This is a common “ZF transmission backlash repair” search query.
- Premature bearing wear: When the 1232.304.058 shim loses its correct thickness, the 0750117075: TAPER ROLLER BEARING experiences uneven loading, causing a growling noise from the differential area.
- Oil leaks from the axle housing: Improper shim stack height can distort the 5838300626: DIFFERENTIAL HOUSING seal surface, resulting in gear oil seepage.
- Vibration during coasting: A failing shim alters the preload on the 2093209023: DIFFERENTIAL assembly, creating harmonic vibrations at highway speeds.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 1232.304.058 |
| Material | Hardened Spring Steel (C67S) |
| Thickness | 0.58 mm (nominal) |
| Outer Diameter | 72.0 mm |
| Inner Diameter | 58.0 mm |
| Weight | 12 grams |
| OEM Reference | ZF 1232.304.058 |
| Surface Finish | Ground, deburred edges |
Compatibility
This shim is engineered for the ZF WG 150 series, but its dimensional profile also suits the WG 180 and WG 200 series transmissions when used in differential preload applications. It is a direct replacement for OEM part 1232.304.058 and is commonly paired with the 5838300811: THRUST WASHER and 5838300721: AXLE BEVEL GEAR during rebuilds. Always verify clearance with the 5838300633: AXLE assembly before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation |
| 2093209023 | DIFFERENTIAL | Secondary differential unit for multi-axle |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 0631329088 | SPRING PIN | Secures shift fork or linkage |
| 5838300811 | THRUST WASHER | Reduces axial friction on gears |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 5838300633 | AXLE | Drives wheel hubs |
| 5838300753 | THRUST WASHER | Controls side gear end play |
| 5838300818 | THRUST WASHER | Adjusts pinion gear clearance |
Frequently Asked Questions
Q: Can I reuse the 1232.304.058 shim during a rebuild?
A: No. ZF recommends replacing all shims during differential service because they work-harden and lose precise thickness, which alters preload on the taper roller bearing.
Q: How do I measure if this shim is the correct thickness?
A: Use a micrometer to measure the shim stack height against the housing depth. The target preload for the WG150 differential is 0.10–0.15 mm of crush on the bearing.
Q: Is this shim compatible with the ZF WG180?
A: Yes, the 1232.304.058 shim fits the WG180 and WG200 series when used in the differential side bearing adjustment location, but always verify with the axle bevel gear clearance.
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Phone: +86 158 2286 3467 |
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