C 230K (202.024) L4-2.3L SC (111.975) (2001)
Valve Seat: Service and Repair
Machining Valve Seat Rings
1
Remove valves
2
Inspect valve guide
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if necessary after inspecting, replace valve guide.
3
Machine valve seats
NOTE: Pay attention to operating instructions of machining tool manufacturer. Maintain dimensions as stated in inspection and setting data.
4
Inspect valve seat for leaks, Measure valve seat width
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If necessary, correct valve seat width (angle alpha and beta)
5
Measure distance from valve stem end to camshaft bearing base
NOTE: Insert diameter 6 mm round material into middle of camshaft bearing base and measure dimension with caliper gage.
CAUTION: If measurement is less than minimum dimension, no correct valve clearance compensation is possible, replace valve seat
rings.
6
Install in the reverse order.