BMW K 1200 LT 1999 Repair Manual page 68

2
1
•
Turn the camshafts until the tips of the cams are
clear.
•
Remove the bearing caps (2) for the thrust bear-
ings first, to prevent tilting.
•
Uniformly release studs of radial bearing caps (3)
and remove the bearing caps.
•
Take out the camshafts.
•
Use a rubber extractor, BMW No. 11 3 251, to
withdraw the bucket tappets from the cylinder
head.
•
Oil the replacement tappets lightly and insert.
•
Oil the camshaft bearing journals.
Identification marks, camshafts
Inlet ................. 2 grooves behind the thrust bearing
Exhaust .............1 groove behind the thrust bearing
Identification marks, camshaft bearing caps
Inlet side ............................................odd numbers
Exhaust side..................................... even numbers
Consecutive numerical order from front (timing end)
to rear.
•
Insert the camshafts in such a way that the tips
of the cams are clear.
•
Install the inner bearing caps first.
•
Install the thrust bearing (timing end) with slide
rail last and do not tighten it until the chain
sprockets have been installed.
•
Tighten the bearing caps uniformly, working from
the inside outwards.
X
Tightening torque:
Bearing cap.................................................. 10 Nm
•
Turn the camshafts so that the grooves at the
rear (opposite end from timing end) are vertical in
relation to the cylinder head.
•
The grooves at the timing end must face towards
the crankshaft.
3
4
KR110270
•
e
When turning the crankshaft, make sure that the
timing chain does not come away from the crank-
shaft sprocket.
•
•
•
•
•
•
•
•
•
X
Bearing cap.................................................. 10 Nm
Chain sprockets ........................................... 56 Nm
Timing case cover .......................................... 9 Nm
Screw plug for chain tensioner ....................... 9 Nm
Attach the aligning device, BMW No. 11 3 700,
and secure to camshaft bearing caps.
Caution:
Turn crankshaft by a further 90°, note the direc-
tion of rotation, piston of cylinder 1 must be at
top dead centre.
Install the inlet camshaft chain sprocket so that
the timing chain is taut at the guide rail.
Insert the screw as far as possible.
Install the exhaust camshaft chain sprocket so
that the timing chain is as taut as possible be-
tween the sprockets (in the slide rail).
Insert the screw as far as possible.
Remove the aligning device, BMW No. 11 3 700.
Push the camshaft lightly against the thrust bear-
ing and fasten the bearing cover with the sliding
rail.
Tighten the chain sprockets, holding the hexa-
gon on the camshaft to prevent it from turning.
Remove the chain tensioner clamping tool and
tighten the screw plug.
Tightening torques:
11 3 700
KL110120
00.69