A universal joint attaches to each control yoke shaft behind the instrument panel. Replacement of the universal joint is required if any free motion or rust around the joint pivots is detected.
McFarlane also has FAA-PMA approval for the protection sleeve that slides over the universal joint to reduce vibration wear and act as a safety device. The universal joints and the sleeve are available separately or together in kits. Each convenient kit also includes nuts and two bolt sizes; only two of the four bolts provided are required when installing the universal joint.
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