18.4.22 Checking the valves
200193-10
302809-10
18.4.23 Checking the valve springs
305015-10
Check the valve plate for run-out.
Valve - run-out
At the valve plate
$ 0.05 mm ($ 0.002 in)
If the measured value does not meet specifications:
-
Change the valve.
Check sealing seat
6)
on the valve.
Valve - sealing seat width
Intake
1 .40 mm (0.0551 in)
Valve - sealing seat width
Exhaust
1 .40 mm (0.0551 in)
If the sealing seat is not centered on the valve seat or
deviates from the specification:
Rework the valve seat.
Check the valve springs for breakage and wear (visual
check).
Info
18 ENGINE
Intake valves are marked with a green color coding.
Exhaust valves are marked with a brown color coding.
If the valve spring is broken or worn:
-
Change the valve spring.
Measure the length of the valve springs.
Valve spring
Minimum length of
42 mm (1.65 in)
intake valve
Minimum length of
42 mm (1 .65 in)
exhaust valve
If the measured value does not meet specifications:
-
Change the valve springs.
193