KTM 690 Enduro R 2018, Repair Manual

Page: 176 / 311

17.4.22
Removing
the valves
17.4.23
Checking
the valves
305605-10
QO.
302809-10
Pretension the valve
springs using
the
special
tool.
Valve
spring
mounter
(59029019000)(==
p.
285)
Insert for valve
spring
lever
(78029060000)("=
p.
294)
Remove the valve
keys
and release the tension
on
the valve
springs.
Remove the
spring
retainer and
spring.
Pull the valve down and out of the valve guide, and
remove
the
valve stem seal and valve
spring
seat.
Mark the valves
according
to their normal
built-in
position.
e
Info
Place the valves into
a
box
according
to
the installation
position
and label the box.
<4
Check the
run-out
at the valve
plate.
Valve
-
run-out
On the valve plate
s
0.05
mm
(s 0.002 in)
»
If
the measured value does
not
equal
the
specified value:
—
Change the valve.
Check
sealing
seat
®
on
the valve.
Valve
-
sealing
seat
width
Intake
|
1.60
mm
(0.063 in)
Valve
-
sealing
seat width
Exhaust
|
2.00
mm
(0.0787in)
»
If the
sealing
area
is
not
in the center of the valve seat
or
deviates from the
specified
value:
—
Machine
the
valve
seat.
4
174