Overview
The ZF 1232.304.075 SHIM is a precision-engineered spacer component designed to establish critical axial clearances within heavy-duty ZF transmissions used in construction machinery. This OEM genuine part sits between the differential housing and bearing assemblies, ensuring proper load distribution and gear mesh alignment. The SKU 1232.304.075 is manufactured to exacting tolerances to prevent metal-to-metal contact and maintain optimal preload on rotating assemblies. Without this shim, transmission components cannot achieve the precise spacing required for reliable power transfer under extreme loads.
Symptoms of Failure
When the ZF 1232.304.075 SHIM wears or becomes damaged, operators will notice specific performance degradation. Excessive differential gear backlash occurs as the shim thickness decreases, causing a clunking noise during direction changes. Premature bearing failure results from incorrect preload, often manifesting as a whining sound from the transmission housing. Oil contamination with metallic particles appears in the lubricant as the shim surface erodes against adjacent components. Intermittent gear slipping under load happens when axial clearance exceeds design limits, reducing torque transmission efficiency.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 1232.304.075 |
| Material | Hardened Spring Steel (C67S) |
| Thickness | 0.75 mm |
| Inner Diameter | 32 mm |
| Outer Diameter | 45 mm |
| Weight | 8 grams |
| Surface Finish | Ground, Phosphate Coated |
| OEM Reference | ZF 1232.304.075 |
Compatibility
This shim is specifically engineered for ZF WG180, WG200, and WG250 series transmissions commonly installed in wheel loaders, excavators, and telehandlers. It is a direct replacement for the factory-installed shim in differential carrier assemblies. The 1232.304.075 also fits select ZF 4WG-200 and 6WG-200 powershift transmissions used in construction equipment from manufacturers such as Liebherr, Caterpillar, and Volvo CE. Always verify your transmission model number before ordering.
Related Components
During differential service, this shim is frequently replaced alongside the 5838109012: DIFFERENTIAL assembly and the 0750117075: TAPER ROLLER BEARING to restore proper preload. The 2093209023: DIFFERENTIAL unit and 5838300626: DIFFERENTIAL HOUSING are also common companion parts when rebuilding the final drive assembly.
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports differential rotation under load |
| 2093209023 | DIFFERENTIAL | Secondary torque distribution unit |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 0631329088 | SPRING PIN | Secures shim and bearing alignment |
| 5838300811 | THRUST WASHER | Reduces axial friction on gear faces |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel axles |
| 5838300633 | AXLE | Rotates to drive wheels |
| 5838300753 | THRUST WASHER | Controls end-play in gear sets |
| 5838300818 | THRUST WASHER | Secondary axial clearance control |
Frequently Asked Questions
Q: How do I know if the 1232.304.075 shim needs replacement?
A: Measure the existing shim thickness with a micrometer. If it shows wear beyond 0.02 mm from its original 0.75 mm specification, or if you observe metallic debris in the transmission oil, replacement is necessary.
Q: Can I reuse this shim during a differential rebuild?
A: No. ZF recommends always installing a new shim during any differential service because the shim compresses and work-hardens during operation, losing its ability to maintain precise clearance.
Q: Does this shim fit ZF 4WG-200 transmissions?
A: Yes, the 1232.304.075 is compatible with ZF 4WG-200, 6WG-200, WG180, and WG200 series transmissions used in construction machinery.
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Phone: +86 158 2286 3467 |
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