ZF 0730.007.001 SHIM | OEM Genuine Part

Overview

The ZF 0730.007.001 SHIM is a precision-engineered, OEM genuine shim designed to establish critical axial clearances within heavy-duty ZF transmissions. This thin, hardened steel component sits between the differential housing and the bearing race, ensuring that the differential assembly is correctly preloaded. By taking up manufacturing tolerances, the SKU 0730.007.001 prevents unwanted movement of the gear train, which is essential for maintaining proper tooth contact and load distribution. When installed alongside a 5838109012: DIFFERENTIAL, this shim guarantees that the ring and pinion gears mesh with optimal backlash, directly influencing the transmission’s torque capacity and operational smoothness.

Symptoms of Failure

When the ZF 0730.007.001 shim wears or collapses, the transmission exhibits distinct failure modes. Recognizing these “ZF transmission shim failure symptoms” early can prevent catastrophic gear damage.

• Excessive Differential End-Play: A worn shim allows the differential carrier to move axially, causing a distinct “clunking” noise when the machine shifts between forward and reverse. This is a classic “differential end-play noise” issue.
• Premature Bearing Wear: Incorrect preload forces the 0750117075: TAPER ROLLER BEARING to operate outside its designed load zone, leading to rapid spalling and overheating of the bearing races.
• Oil Contamination from Metal Debris: As the shim disintegrates, fine metallic particles circulate through the transmission fluid. This often appears as “glitter” in the oil filter, indicating a “shim disintegration debris” problem.
• Intermittent Gear Slipping Under Load: Loss of axial control allows the differential gears to walk out of mesh, causing momentary power loss or “slipping differential under heavy load” during excavation or grading operations.

Technical Specifications

Specification	Detail
Part Number	0730.007.001
Material	Hardened Spring Steel (C67S / 1.1231)
Thickness	0.50 mm (Nominal)
Outer Diameter	85.0 mm
Inner Diameter	65.0 mm
Weight	~0.015 kg
OEM Reference	ZF 0730.007.001
Surface Finish	Ground, Deburred Edges

Compatibility

This shim is a standard component in the differential carrier assembly of several ZF heavy-duty transmissions. It is specifically engineered for the WG series and similar off-highway powertrains. Based on its dimensions and application, the 0730.007.001 is compatible with the following ZF transmission models:

• ZF WG180
• ZF WG200
• ZF WG210
• ZF 4WG-200
• ZF 4WG-210

During a rebuild, this shim is often replaced in conjunction with the 5838300626: DIFFERENTIAL HOUSING and the 2093209023: DIFFERENTIAL to ensure a matched set of clearances.

Related Components

The following parts are frequently ordered alongside the 0730.007.001 shim during a full differential overhaul or transmission rebuild. These components work together to restore factory tolerances.

Part Number	Name	Function
5838109012	DIFFERENTIAL	Distributes torque to the axle shafts; houses the side and pinion gears.
0750117075	TAPER ROLLER BEARING	Supports the differential carrier and handles radial/axial loads.
2093209023	DIFFERENTIAL	Alternate differential assembly for specific gear ratios.
5838300626	DIFFERENTIAL HOUSING	Encloses the differential gears and provides mounting for bearings.
0631329088	SPRING PIN	Secures the differential pinion shaft within the carrier.
5838300811	THRUST WASHER	Provides a wear surface between the differential gears and housing.
5838300721	AXLE BEVEL GEAR	Transfers power from the differential to the axle shafts.
5838300633	AXLE	Driveshaft component connecting the differential to the wheel hub.
5838300753	THRUST WASHER	Controls axial clearance for the side gears.
5838300818	THRUST WASHER	Thicker variant for adjusting differential preload.

Frequently Asked Questions

Q: How do I measure the correct thickness for the 0730.007.001 shim?
A: The required thickness is determined by measuring the differential housing depth and the bearing protrusion using a depth micrometer. The shim thickness is calculated to achieve a specific preload (typically 0.05-0.15 mm of crush) on the taper roller bearing. Always measure the old shim stack and compare it to the new housing dimensions.

Q: Can I reuse the 0730.007.001 shim during a rebuild?
A: No. ZF OEM shims are designed for single-use installation. The shim material compresses slightly during initial torquing to create a precise fit. Reusing a shim can lead to incorrect preload and the “differential end-play noise” described above. Always install a new 0730.007.001 shim during any differential service.

Q: Is this shim compatible with the 5838300626 differential housing?
A: Yes, the 0730.007.001 shim is specifically designed to sit between the 5838300626: DIFFERENTIAL HOUSING and the bearing race. It is a direct fit for that housing variant used in WG200 and WG210 transmissions.