BMW R 1100 RT Repair Manual page 113

Checking valves for wear
•
Clean combustion residue from valves.
•
Check valve dimensions.
See Technical Data.
a
Remachining valve seat
D
e
Caution:
Width (B) and diameter (D) must always be
maintained when remachining the valve seat.
See Technical Data.
a
Checking and repairing cylinder head
•
Remove combustion residues from combusion
chamber.
•
Check sealing face for damage/distortion, and
skim flat if necessary.
Skimming sealing face:
...............max. 0.2 mm (0.00787 in) metal re-moval
Checking valve guide for wear
•
Check valve guide bore.
See Technical Data.
a
RS110890
11.63