ZF 2050.309.068 SHIM for WG65 | OEM Genuine Part

Overview

The ZF 2050.309.068 SHIM is a precision-engineered adjustment component designed specifically for the WG 65 Series transmission. This OEM genuine part functions as a critical spacer within the planetary gearset assembly, ensuring correct axial clearance between rotating and stationary components. By maintaining precise end-play tolerances, the shim prevents metal-on-metal contact that would otherwise lead to premature gear wear and heat buildup. The SKU 2050.309.068 is manufactured to ZF’s exacting factory specifications, making it an essential element for any rebuild or overhaul of the WG65 gearbox. This shim is typically installed during final assembly of the TRANSMISSION HOUSING to establish the correct preload on the output shaft bearings.

Symptoms of Failure

• Excessive axial play in the output shaft: When the 2050.309.068 shim wears or compresses beyond tolerance, operators will notice a distinct clunking sensation during gear engagement, particularly under load. This symptom often appears as a “loose driveline” feeling in WG65-equipped vehicles.
• Low-frequency gear whine during deceleration: A worn shim allows the planetary gears to shift out of their ideal mesh pattern, producing a deep, rhythmic whining noise that intensifies when coasting downhill. This is a classic indicator of incorrect bearing preload.
• Oil contamination with metallic particles: As the shim fails to maintain proper clearance, the transmission housing and gear faces begin to wear against each other. This generates fine metallic debris visible in the transmission fluid, often accompanied by a burnt smell from localized overheating.
• Intermittent gear slipping under heavy torque: A collapsed shim can cause the clutch packs to lose their hydraulic clamping force, resulting in momentary power loss during uphill climbs or when towing heavy loads.

Technical Specifications

Compatibility

This shim is engineered for the ZF WG65 series of powershift transmissions. It is directly compatible with the following models: WG65, WG80, WG100, WG120, WG150, WG180, and WG200. The 2050.309.068 is used in both the standard and heavy-duty variants of these transmissions, commonly found in construction equipment, agricultural tractors, and material handling machinery. When replacing this shim, it is critical to also inspect the HOUSING and HOUSING components for wear, as these surfaces directly contact the shim. Additionally, the HEXAGON SCREW used to secure the housing must be torqued to factory specifications to prevent shim movement during operation.

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