11 12 600 Reaming a valve guide (M62, S62)

WARNING: This page is about a different variant/trim than selected.

(valve removed)

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

Ream out valve guide
Install repair valve with larger stem 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) onto valve seat. Starting from combustion chamber side, ream valve guide dry. Rotate reaming tool once in downwards direction.

NOTE: After reaming out, remachine valve seat,

refer to 11 12 527 REMACHINING A VALVE SEAT (M62, S62) .

Fig 1: Identifying Guide Taper

Courtesy of BMW OF NORTH AMERICA, INC.