KTM 690 SMC 2008, Руководство по ремонту

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30/ENGINE - WORK ON INDIVIDUAL PARTS
119
18.23
Checking valves
200193-10
–
Check the run-out at the valve plate.
Valve - run-out
On the valve plate
≤
0.05 mm (
≤
0.002 in)
» If the measured value does not equal the specified value:
–
Change the valve.
0 0 A A
400373-10
–
Check the sealing seat

on the valve.
Valve - sealing seat width
Intake 1.60 mm (0.063 in)
Valve - sealing seat width
Exhaust 2.00 mm (0.0787 in)
» If the sealing area is not in the center of the valve seat or deviates from the
specified value:
–
Machine the valve seat.
18.24
Checking valve springs
300118-10
–
Check the valve springs for fractures and wear (visual check).
» If the valve spring is fractured or worn:
–
Change the valve spring.
–
Measure the valve spring lengths.
Valve spring
Minimum length (without valve
spring cap) 42.3 mm (1.665 in)
» If the measured value does not equal the specified value:
–
Change the valve spring.
18.25
Checking valve spring retainer
300162-10
–
Check the valve spring retainer for fractures and wear (visual check).
» If the valve spring retainer is fractured or worn:
–
Change the valve spring retainer.
–
Measure the thickness of the valve spring retainer.
Valve spring cap - thickness 2.4… 2.5 mm (0.094… 0.098 in)
» If the measured value does not equal the specified value:
–
Change the valve spring retainer.
18.26
Checking cylinder head
300119-10
–
Check the valve guides using the special tool

.
Limit plug gauge (59029026006) ( p. 209)
» 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
tearing.
» If there is wear or tearing:
–
Change the cylinder head.