ZF 4699.298.044 SET OF SHIMS | OEM Genuine Part

Overview

The ZF 4699.298.044 SET OF SHIMS (SKU: 4699.298.044) is an OEM genuine shim set engineered for precision end-play adjustment within ZF heavy-duty powershift transmissions. This kit is critical for establishing correct axial clearance between the rotating clutch packs and stationary housing components. Installed directly inside the transmission sump area, these shims compensate for manufacturing tolerances and wear, ensuring that the clutch piston stroke remains within factory specifications. When paired with the 4699101155 HOUSING and the 4699201018 HOUSING, this shim set prevents metal-on-metal contact that would otherwise lead to catastrophic gear train failure.

Symptoms of Failure

• Intermittent gear slipping under load: Worn or incorrectly stacked shims allow excessive clutch pack float, causing the transmission to lose torque transfer when climbing grades or hauling heavy loads.
• Low-frequency hydraulic chatter: As the shim pack collapses, the clutch piston can oscillate against the 4699309077 HOUSING COVER, producing a distinct “thumping” noise during directional shifts.
• Internal oil contamination from metal debris: Degraded shims shed fine metallic particles into the hydraulic circuit, which can be detected during routine oil analysis as elevated iron content.
• Delayed engagement after cold start: Insufficient shim thickness reduces clutch pack preload, causing a noticeable lag of 2-3 seconds before the transmission engages from neutral to forward.

Technical Specifications

Compatibility

This shim set is primarily designed for the ZF WG180 and WG200 series powershift transmissions commonly found in construction machinery such as wheel loaders, graders, and telehandlers. It also fits the ZF 4WG-180, 4WG-200, and 6WG-200 variants. For proper installation, always verify the shim stack against the 0636100132 TORX SCREW torque specifications to avoid over-compression of the clutch pack.

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