Valve Guide: Service and Repair

Reaming A Valve Guide
(Valve Removed)

Note: In event of excessive clearance between valve stem and valve guide:

Valve guide is reamed and a repair valve with a larger stem diameter is installed.





Assemble reaming tool and guide taper (1) from special tool kit 00 4 210 depending on stem diameter. Press guide taper (1) against valve seat and ream out valve guide (when dry) from combustion-chamber end. Rotate reaming tool once in downwards direction.

Note: Remachine valve seat after reaming, refer to Valve Seat, Service and Repair.