Valve
Guide, Ream
Remove
cylinder head.
Remove
valves.
See
corresponding operations in this group.
Measure
valve guide with dial gauge and internal measuring instrument.
Worn
valve guides do not guarantee a centred valve seat and lead to high oil
consumption.
Attention! Oversize valves may already be factory-installed.
Oversize valve guides are marked on the guides and oversize valves are marked
on the stem end. See also Technical Data.
Size Special Identification
Tool Factory Service
Normal none K
0.075 KM-253 1 K1
0.150 KM-254 2 K2
0.250 KM-255 - A
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