Checking Valves For Wear; Remachining Valve Seat; Checking And Repairing Cylinder Head; Checking Valve Guide For Wear - BMW R 1200 C Repair Manual

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 main-
tained 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 (0.008 in) metal removal

Checking valve guide for wear

•
Check valve guide bore.
............................................See Technical data
a
RS110890
11.27