Checking The Cylinder Head - KTM 1190 RC8 R EU/UK 2009 Repair Manual

30/ENGINE - WORK ON INDIVIDUAL PARTS

Checking the cylinder head

20.17
0 0 A
A
–
Mount screw
Guideline
Plug, vacuum connection
–
Mount vacuum connection
Guideline
Vacuum connection
–
Mount and grease O-rings
–
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.
–
Check the valve guides using the special tool.
Limit plug gauge (59029026006) (
Valve guide - diameter
New condition
200470-10
Wear limit
» If the special tool is easy to insert into the valve guide:
–
Change the valve guide and valve.
–
Check sealing seat
Valve - sealing seat width
Intake: New condition
Intake: Wear limit
Exhaust: New condition
Exhaust: Wear limit
» If the measured value does not equal the specified value:
–
Machine the valve seat.
400373-10
–
Check the sealing area of the cylinder for distortion using a straight edge and the
special tool.
Feeler gauge (59029041100) (
Cylinder/cylinder head - sealing area
distortion
» If the measured value does not equal the specified value:
–
Change the cylinder head.
–
Check the pivot points of the camshafts in the cylinder head and in the camshaft
400376-10
bearing bridge for damage and wear.
» If there is damage or wear:
–
Change the cylinder head with the camshaft bearing bridge.
–
Check valve
» If there is damage or wear:
–
Change the valve.
–
Check the valve for run-out.
Valve - run-out
On the valve stem
On the valve plate: New condition
On the valve plate: Wear limit
200471-10
.

M6
.

M6
.

p. 440)
of the valves.

p. 441)
for damage and wear.

5 Nm Loctite ®
(3.7 lbf ft)
5 Nm Loctite ®
(3.7 lbf ft)
6.004... 6.016 mm (0.23638...
0.23685 in)
6.050 mm (0.23819 in)
1.0 mm (0.039 in)
1.7 mm (0.067 in)
1.0 mm (0.039 in)
2.0 mm (0.079 in)
≤ 0.05 mm (≤ 0.002 in)
≤ 0.05 mm (≤ 0.002 in)
≤ 0.016 mm (≤ 0.00063 in)
≤ 0.030 mm (≤ 0.00118 in)
152
243™
243™