17 ENGINE
17.4.22 Checking the valves
200193-10
302809-10
17.4.23 Checking the valve springs
311634-10
198
-
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
G
on valve for damage and wear.
If the sealing surface is damaged or worn:
Machine the valve seat.
-
Check the valve springs for breakage and wear (visual
check).
•
Info
I
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,
42.40 mm (1.6693 in)
intake valve outer
spring
Minimum length,
39.20 mm (1.5433 in)
intake valve inner
spring
Minimum length,
42.40 mm (1.6693 in)
exhaust valve outer
spring
Minimum length,
39.20 mm (1.5433 in)
exhaust valve inner
spring
If the measured value does not meet specifications:
Change the valve springs.
..