ZF 0631.306.174 CYLINDRICAL PIN for WG181/WG200/WG65 | OEM Genuine Part

Overview

The ZF 0631.306.174 CYLINDRICAL PIN is a precision-engineered locating component designed for the valve body and clutch housing assemblies within ZF’s heavy-duty WG transmission series. This OEM genuine part ensures exact alignment between mating surfaces, preventing lateral movement that can lead to hydraulic circuit miscommunication. The SKU 0631.306.174 is manufactured to ZF’s original tolerances, guaranteeing a press-fit that maintains structural integrity under high torque loads. When installed alongside the 4616105413: OUTPUT and 4616203017: OUTPUT FLANGE, this pin anchors the driveline alignment critical for smooth power delivery.

Symptoms of Failure

• Erratic shift timing and gear hunting – A worn 0631.306.174 pin allows the valve body to shift out of alignment, causing the transmission to hunt for gears under load.
• Hydraulic fluid seepage at housing joints – Misalignment from a degraded cylindrical pin creates gaps in the 4616101117: TRANSMISSION HOUSING seal, leading to visible oil leaks around the bell housing.
• Metallic knocking during low-speed operation – Excessive pin wear permits component chatter, producing a distinct tapping noise when the transmission is in first or reverse gear.
• Delayed engagement after cold start – A loose pin disrupts oil gallery alignment, causing a 2-3 second lag before drive engages in cold conditions.

Technical Specifications

Compatibility

This cylindrical pin is engineered for ZF’s WG series powershift transmissions, specifically the WG 181, WG 200, WG 65, WG 90, WG 92, WG 94, and WG 98 models. It functions as a locating dowel in the clutch pack and planetary carrier assemblies. For full driveline restoration, pair this pin with the 0636011038: HEXAGON SCREW to secure the output flange, and verify the 0631306085: CYLINDRICAL PIN for secondary alignment points.

Related Components

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