17 ENGINE
17.4.24 Checking the cam levers
302718-10
17.4.25 Checking the cylinder head
306769-10
302808-10
17.4.26 Installing the valves
-
Check the cam levers and cam lever shafts for damage and wear.
If there is damage or wear:
-
Change the cam levers and/or cam lever shafts.
-
Check valve guides
O
using the special tool.
I
Limit plug gauge (77229026000) (
I!!;!
p. 229)
If the special tool is easy to insert in the valve guide:
-
Change the valve guide and valve.
153
-
Check the sealing area of the spark plug thread and the valve seats from damage
and cracking.
If there is damage or cracking:
-
Change the cylinder head.
-
Using a straightedge and the special tool, check the sealing area of the cylinder
for distortion.
I
Feeler gauge (590290411 00) (
�
p. 226)
Cylinder/cylinder head - distortion of
sealing area
:,; 0.10 mm (:,; 0.0039 in)
If the measured value does not meet specifications:
-
Change the cylinder head.
-
Check sealing seat
6)
of the valves.
Valve - sealing seat width
Intake
Valve - sealing seat width
Exhaust
1.40 mm (0.0551 in)
1 .40 mm (0.0551 in)
If the measured value does not meet specifications:
-
Rework the valve seat.
-
Blow compressed air through all oil holes and check that they are clear.
-
Position valve spring seat
O.
Mount valve stem seal
8.
-
Mount the valve corresponding to its installation position.
-
Mount the valve spring with the tighter coil facing downward according to the
built-in position.
•
Info
I
Intake valves are marked with a green color coding.
Exhaust valves are marked with a brown color coding.
-
Mount the valve spring retainers.
Содержание F2101O1
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