Valve Guide: Service and Repair

(Valve removed)

Note: If the clearance between valve stem and valve guide is too large, ream out valve guide and install repair valve with larger shaft diameter.

Assemble the reaming tool and guide taper (1) from the special tool kit 00 4 210 depending on the shaft 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: After reaming out, remachine valve seat, refer to Valve Seat, Service and Repair.