Camshafts Cylinder Front; Oil Pressure Switch; Chain Tensioner Cylinder Front - KTM 990 Adventure Repair Manual

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Camshafts cylinder front

– Check and note down the valve clearance before you dismount the
camshafts.
Valve clearance (at 20ºC): intake 0.10 - 0.15 mm
– Loosen the bolts on the camshaft bearing bridge from the front
cylinder and carefully remove the camshaft bearing bridge.
!
W
HEN TIGHTENING THE BOLTS OF THE CAMSHAFT BEARING BRIDGE
THAT THE VALVES ARE NOT ACTUATED BY THE CAMSHAFT
OTHERWISE THE BEARING BRIDGE WILL BREAK
– Remove the camshafts from the cylinder head without tilting.

Oil pressure switch

– Loosen the oil pressure switch
washer.

Chain tensioner cylinder front

– Remove the bolt on the chain tensioner
NOTE: measure the preload on the chain tensioner element before
dismounting:
– Apply the chain tensioner bolt to the chain tensioner element
without compressing the spring.
– Measure the distance between the sealing washer and the cylinder
head.
The measured value should be between 6 mm and 11 mm. If the value
is lower, the tensioning rail could be worn or the timing chain
excessively elongated. If it is higher, the engine was turned to TDC
against the running direction.
– Remove the sealing washer.
– Pull out the chain tensioner element
NOTE: the housing and the tensioning piston on the chain tensioner
element are compression molded. If they fall apart during disassembly,
the chain tensionerelement must be replaced.
exhaust 0.25 - 0.30 mm
CAUTION !
(
SEE ILLUSTRATION
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and unscrew. Discard sealing
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MAKE SURE
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