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30/ENGINE - WORK ON INDIVIDUAL PARTS
Checking the cylinder head
19.15
A
0 0 A
Installing the valves
19.16
–
Check the valve guides using special tool
Limit plug gauge (59029026006) (
»
If the special tool is easy to insert into the valve guide:
–
Change the valve guide and valve.
–
Check the sealing area of the spark plug thread and the valve seats for damage and
cracking.
»
If there is wear or cracking:
–
Change the cylinder head.
600282-10
–
Check the sealing area of the cylinder for distortion using a straight edge and the
special tool.
Feeler gauge (59029041100) (
Cylinder/cylinder head - sealing area
distortion
»
If the measured value does not equal the specified value:
–
Change the cylinder head.
400375-10
–
Check sealing seat
Valves
Sealing seat width, intake
Valves
Sealing seat width, exhaust
»
If the measured value does not equal the specified value:
–
Machine the valve seat.
–
Blow though all oil holes with compressed air and check that they are clear.
400373-10
–
Check parts for damage and wear. Replace damaged or worn parts.
–
Position the lower valve spring retainers
600283-10
–
Mount valves
–
Mount outer valve spring
retainer
.
600284-10
P. 209)
P. 209)
of the valves.
according to their position in the engine.
, inner valve spring
.
≤ 0.10 mm (≤ 0.0039 in)
1.50 mm (0.0591 in)
2.00 mm (0.0787 in)
. Mount the new valve stem seals
and upper valve spring
109
.
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