6-20
Repair manual KTM LC8
Art.-Nr
. 3.206.009-E
Camshafts cylinder front
– Insert the two camshafts marked "in fr" (front intake camshaft) and
"ex fr" (front exhaust camshaft) into the bearings without tilting. The
marks on the camshaft gears must coincide with the cylinder head
surface (see illustrations).
NOTE:
– The same camshaft gears are used in both cylinders but they have
marks for cylinder rear and front. Use the camshaft gear marked with
a cross for cylinder rear and the camshaft gear marked with a circle
1
for cylinder front.
– The cams
2
of both camshafts on the cylinder front will point
towards the outside in the TDC position.
– The camshaft bearing bridges
3
and the cylinder heads
4
have
coinciding marks to ensure that the same camshaft bearing bridge is
mounted on the same cylinder head.
– Place plastigauge measuring strips
5
(600.29.012.000) on the
camshaft bearing positions.
– Carefully mount the camshaft bearing bridge and tighten the bolts in
the camshaft bearing bridge to 10 Nm (M8) and 5 Nm (M6) in the
first stage.
– Tighten to 18 Nm (M8) and 10 Nm (M6) in the second stage.
!
CAUTION
!
W
HEN TIGHTENING THE BOLTS OF THE CAMSHAFT BEARING BRIDGE
,
MAKE SURE THAT
THE VALVES ARE NOT ACTUATED BY THE CAMSHAFT
(
SEE ILLUSTRATION
),
OTHERWISE
THE BEARING BRIDGE WILL BREAK
.
NOTE: do not turn the camshafts.
– Remove the camshaft bearing bridge again and compare the width of
the plastigauge measuring strip
6
with the information on the
packing. The width of the plastiguage measuring strip is equivalent to
the bearing clearance.
Camshaft bearing clearance: 0.020 mm – 0.061 mm
Wear limit: 0.09 mm
– Carefully mount the camshaft bearing bridge and tighten the bolts in
the camshaft bearing bridge to 10 Nm (M8) and 5 Nm (M6) in the
first stage.
– Tighten to 18 Nm (M8) and 10 Nm (M6) in the second stage.
3
1
1
4
5
6
2