Overview
The ZF 1232.304.080 SHIM is a precision-engineered OEM genuine component designed to establish critical axial clearances within ZF heavy-duty transmission assemblies. This shim, identified by SKU 1232.304.080, is positioned between the differential housing and bearing races to ensure optimal gear mesh and preload. By compensating for manufacturing tolerances, this thin yet robust spacer prevents excessive end-play in rotating assemblies, directly influencing torque transfer efficiency. Commonly found in construction machinery drivelines, the 1232.304.080 shim works in concert with components like the 5838109012: DIFFERENTIAL to maintain precise alignment under heavy loads.
Symptoms of Failure
- Transmission whine under load: A worn shim allows the differential to shift, causing gear teeth to contact improperly and generate a high-pitched whining noise during acceleration.
- Intermittent gear slippage: When the shim loses its thickness tolerance, axial play increases, leading to momentary disengagement of gear sets and a sensation of power loss.
- Metallic debris in transmission oil: Excessive movement from a collapsed shim grinds against the 0750117075: TAPER ROLLER BEARING, shedding fine metal particles into the lubricant.
- Oil seepage at axle seals: Misalignment caused by a degraded shim puts lateral pressure on seals, eventually causing fluid to weep from the differential housing interface.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 1232.304.080 |
| Material | Case-hardened steel (C10E / SAE 1010) |
| Thickness | 0.80 mm (nominal) |
| Outer Diameter | 72.0 mm |
| Inner Diameter | 52.0 mm |
| Weight | ~0.02 kg |
| OEM Reference | ZF 1232.304.080 |
Compatibility
This shim is engineered for ZF powershift transmissions commonly deployed in wheel loaders, graders, and telehandlers. It is a direct fit for the WG180, WG200, and WG211 series, where it regulates end-play in the differential carrier assembly. The 1232.304.080 also appears in certain 4WG-200 and 6WG-200 variants. When rebuilding these units, pairing this shim with a new 2093209023: DIFFERENTIAL and a 5838300626: DIFFERENTIAL HOUSING ensures factory-spec tolerances are restored.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads on differential |
| 2093209023 | DIFFERENTIAL | Alternative differential assembly for WG series |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears and shims |
| 0631329088 | SPRING PIN | Secures shift forks and linkage pins |
| 5838300811 | THRUST WASHER | Controls axial clearance in gear stacks |
| 5838300721 | AXLE BEVEL GEAR | Transfers power from differential to axle shaft |
| 5838300633 | AXLE | Drives wheel hubs from differential |
| 5838300753 | THRUST WASHER | Reduces friction on planetary gear sets |
| 5838300818 | THRUST WASHER | Adjusts end-play in output shaft assembly |
Frequently Asked Questions
Q: How do I measure if the 1232.304.080 shim needs replacement?
A: Use a micrometer to measure shim thickness. If it has worn below 0.75 mm or shows uneven compression marks, replace it immediately to prevent differential bearing damage.
Q: Can I stack multiple 1232.304.080 shims to adjust clearance?
A: No. ZF specifies using a single shim of the correct thickness. Stacking creates uneven load distribution and can cause the 5838300811: THRUST WASHER to fail prematurely.
Q: Is this shim compatible with the ZF 4WG-200 transmission?
A: Yes. The 1232.304.080 is a standard service part for the 4WG-200 and 6WG-200 series, specifically for adjusting the differential preload in the rear housing.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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