ZF 1232.304.083 SHIM | OEM Genuine Part

Overview

The ZF 1232.304.083 SHIM is a precision-engineered spacer component designed to establish critical axial clearances within ZF heavy-duty transmission assemblies. Positioned between the differential housing and bearing races, this OEM genuine shim compensates for manufacturing tolerances, ensuring optimal gear mesh and load distribution. The SKU 1232.304.083 is specifically calibrated for use in construction machinery drivetrains, where even micron-level deviations can cause premature wear. When installed alongside a 5838109012: DIFFERENTIAL, this shim prevents lateral movement that would otherwise degrade torque transfer efficiency.

Symptoms of Failure

When the ZF 1232.304.083 shim wears or deforms, it triggers distinct operational failures that technicians should recognize immediately:

• Transmission whine under load – A high-pitched noise during acceleration indicates incorrect pinion depth caused by a collapsed shim.
• Intermittent gear slipping in reverse – Worn axial clearance allows the differential carrier to shift, causing momentary loss of drive engagement.
• Metallic debris in transmission fluid – A failing shim flakes into the oil, often accompanied by a 0750117075: TAPER ROLLER BEARING that has been subjected to excessive end-play.
• Oil seepage at the differential housing seam – Distorted shim geometry misaligns the housing, breaking the seal between the 5838300626: DIFFERENTIAL HOUSING and the transmission case.

Technical Specifications

Parameter	Value
Part Number	1232.304.083
Material	Hardened spring steel (C67S)
Thickness	0.83 mm ± 0.02 mm
Outer Diameter	72.0 mm
Inner Diameter	42.5 mm
Weight	18 grams
OEM Reference	ZF 1232.304.083
Surface Finish	Ground, deburred edges

Compatibility

This shim is engineered for ZF’s powershift transmission series commonly deployed in wheel loaders, graders, and excavators. It directly fits the following models when used with the 2093209023: DIFFERENTIAL assembly:

• ZF WG180
• ZF WG200
• ZF WG210
• ZF 4WG-200
• ZF 6WG-250

Always verify the shim stack height against the service manual when replacing the 5838300626: DIFFERENTIAL HOUSING or associated bearings.

Related Components

Part Number	Name	Function
5838109012	DIFFERENTIAL	Distributes torque between axles
0750117075	TAPER ROLLER BEARING	Supports radial and axial loads
2093209023	DIFFERENTIAL	Secondary differential for planetary drives
5838300626	DIFFERENTIAL HOUSING	Encloses differential gears
0631329088	SPRING PIN	Secures shim and gear alignment
5838300811	THRUST WASHER	Reduces axial friction
5838300721	AXLE BEVEL GEAR	Transfers power to wheel hubs
5838300633	AXLE	Rotates with differential output
5838300753	THRUST WASHER	Controls side gear end-play
5838300818	THRUST WASHER	Adjusts pinion gear clearance

Frequently Asked Questions

Q: Can I reuse the 1232.304.083 shim after disassembling the differential?
A: No. ZF recommends replacing this shim whenever the differential housing or taper roller bearing is removed. The shim deforms plastically during initial torque-down and will not maintain correct clearance if reused.

Q: How do I measure the correct shim thickness for my ZF WG200?
A: Use a depth micrometer to measure the distance between the bearing bore shoulder and the differential housing face. Subtract the bearing width and desired preload (typically 0.05–0.10 mm) to select the shim. The 1232.304.083 is a 0.83 mm baseline; stack multiple shims if needed.

Q: Does this shim fit the ZF 4WG-310 transmission?
A: No. The 4WG-310 uses a larger differential housing (part 5838300626 variant) and requires shim 1232.304.112. Always cross-reference your transmission serial number before ordering.