ZF 0730.109.396 SHIM | OEM Genuine Part

Overview

This genuine OEM ZF shim, part number 0730.109.396, is a precision-engineered spacer used to establish correct axial clearances and preload within the differential and final drive assemblies of heavy-duty construction machinery transmissions. Positioned between rotating components and the housing, this shim compensates for manufacturing tolerances, ensuring that gear meshing patterns remain optimal under extreme load. The SKU 0730.109.396 is a critical adjustment element that directly impacts the longevity of surrounding drivetrain components, including the 5838109012: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING.

Symptoms of Failure

When this shim wears, compresses, or corrodes, drivetrain backlash increases, leading to distinct operational issues. Look for these specific failure symptoms:

• Excessive differential gear lash – A noticeable clunking or thud when shifting between forward and reverse, indicating lost axial preload.
• Premature bearing noise – A whining or growling sound from the axle area, often misdiagnosed as a failing 0750117075: TAPER ROLLER BEARING.
• Oil contamination from metal particles – Worn shim material flakes into the lubricant, visible during routine oil changes as fine metallic debris.
• Intermittent wheel slip under load – The differential loses proper pinion depth, causing one wheel to spin momentarily on uneven terrain.

Technical Specifications

Specification	Detail
OEM Part Number	0730.109.396
Material	Case-hardened steel (C15E / 1.1141)
Thickness	1.50 mm (nominal)
Outer Diameter	72.0 mm
Inner Diameter	58.0 mm
Weight	0.035 kg
Surface Finish	Ground, Ra ≤ 0.8 µm
OEM Reference	ZF 0730.109.396

Compatibility

This shim is engineered for ZF’s heavy-duty powershift and hydrostatic drive transmissions commonly found in wheel loaders, graders, and dump trucks. It is a direct fit for the following transmission families:

• ZF WG180 series (WG180, WG181, WG182)
• ZF WG200 series (WG200, WG201, WG202)
• ZF WG310 series (WG310, WG311)
• ZF 4WG-200 and 4WG-310 variants

When replacing this shim, always inspect the mating 5838300626: DIFFERENTIAL HOUSING for scoring, and verify the condition of the 2093209023: DIFFERENTIAL assembly for wear patterns.

Related Components

Part Number	Name	Function
5838109012	DIFFERENTIAL	Distributes torque between axles
0750117075	TAPER ROLLER BEARING	Supports radial and axial loads
2093209023	DIFFERENTIAL	Torque distribution assembly
5838300626	DIFFERENTIAL HOUSING	Encloses differential gears
0631329088	SPRING PIN	Secures gear alignment
5838300811	THRUST WASHER	Reduces axial friction
5838300721	AXLE BEVEL GEAR	Transfers power to wheel hubs
5838300633	AXLE	Rotates wheel assembly
5838300753	THRUST WASHER	Controls end-play
5838300818	THRUST WASHER	Axial load distribution

Frequently Asked Questions

Q: Can I reuse the ZF 0730.109.396 shim after disassembly?
A: No. This shim is a single-use component. Once compressed during initial torque-down, its thickness changes. Always install a new shim to maintain correct preload on the 0750117075: TAPER ROLLER BEARING.

Q: How do I measure the correct shim thickness for my application?
A: Use a depth micrometer to measure the recess in the 5838300626: DIFFERENTIAL HOUSING and subtract the bearing protrusion. The resulting gap determines the required shim thickness. ZF service manuals provide specific formulas for each transmission model.

Q: Will a worn shim cause damage to the differential gears?
A: Yes. Excessive clearance allows the 2093209023: DIFFERENTIAL to shift laterally, causing uneven tooth contact and eventual gear pitting or tooth fracture.