ZF 0730.109.391 SHIM | OEM Genuine Part

Overview

This ZF 0730.109.391 SHIM is an OEM genuine precision component engineered for critical axial clearance adjustment within ZF heavy-duty powershift transmissions. Positioned between the differential housing and bearing race, this shim ensures correct preload on the differential assembly, directly influencing gear mesh patterns and load distribution. The SKU 0730.109.391 is manufactured to exact factory tolerances, preventing unwanted movement that leads to premature wear. When installed alongside a 5838109012: DIFFERENTIAL, this shim maintains the precise end-play required for smooth power transfer under heavy construction loads.

Symptoms of Failure

• Transmission whining noise under load – A worn or collapsed shim allows the differential to shift, creating abnormal gear contact patterns that produce a distinct high-pitched whine during acceleration.
• Intermittent gear slipping in forward gears – Incorrect shim thickness reduces bearing preload, causing the 0750117075: TAPER ROLLER BEARING to lose contact, resulting in momentary power loss during gear engagement.
• Oil contamination with metallic particles – As the shim degrades, it allows excessive axial movement, grinding metal against the 2093209023: DIFFERENTIAL housing, shedding fine steel debris into the transmission fluid.
• Vibration through the driveline during turning – Uneven shim wear disrupts differential alignment, causing noticeable shudder when maneuvering heavy machinery at low speeds.

Technical Specifications

Compatibility

This shim is designed for ZF WG series powershift transmissions commonly found in construction machinery. It is directly compatible with the following transmission models: WG180, WG200, WG210, WG211, WG220, WG230, WG240, WG250, WG260, WG280, WG290, WG310, WG320, WG340, WG350, WG360, WG370, WG380, WG390, WG400, WG500, WG600, WG700, WG800, WG900, WG1000. Always verify shim stack height against factory service manual specifications when replacing the 5838300626: DIFFERENTIAL HOUSING.

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Frequently Asked Questions

Q: How do I know if the 0730.109.391 shim needs replacement?
A: Measure the differential bearing preload using a dial indicator. If end-play exceeds 0.10 mm, or if you observe metallic debris in the oil filter, replace the shim immediately. Always replace in pairs when servicing the differential.

Q: Can I reuse this shim after a transmission rebuild?
A: No. ZF specifies that all shims must be replaced with new OEM parts during any major transmission overhaul. The shim compresses and work-hardens over time, making reuse unreliable for maintaining correct preload.

Q: What is the torque specification for the differential housing bolts when installing this shim?
A: For the 5838300626 housing, tighten M12 bolts to 95 Nm ±5 Nm in a cross-pattern sequence. Always lubricate threads with ZF-approved assembly paste to prevent galling.