Crankcase And Crankshaft Cleaning - Arctic Cat Cougar Service Manual

186
CAUTION
Prying the cases apart with a screw-
driver or any other sharp tool will dam-
age the sealing suiface.
If
all of the case
bolts are removed, you should be able to
separate the case halves with no more
force other than tapping the bolt bosses
as described in Step 9. Remember, dam-
age to one case half will require replace-
ment of both.
9. Tap on the large bolt bosses with a soft mallet
to break the crankcase halves apart and then
remove the bottom half (Figure 87).
NOTE
To reduce the damage to the long studs
attached to the upper crankcase half of
air-cooled models, lift the upper case
half from the lower half. On liquid-
cooled models, lift the bottom case half
from the top half.
10. Lift the crankshaft (Figure 93) from the
upper crankcase half and set it aside carefully so
that you do not damage the connecting rods.
Block the crankshaft so that it cannot roll off of
the workbench.
11. If necessary, remove the coolant pump and
oil injection pump driveshaft as described in this
chapter.
Cleaning
1. Clean both crankcase halves with cleaning
solvent. Thoroughly dry with compressed air and
wipe off with a clean shop cloth. Be sure to
remove all traces of old sealer from mating sur-
faces.
2. Clean all the oil passages in the crankcase,
then blow passages out with compressed air.
CAUTION
Make sure the cleaning solvent used to
clean the crankshaft is clean.
If
any dirt
enters the close clearances of the bear-
ings while cleaning, it will be difficult to
remove and can cause bearing damage.
CHAPTER FIVE
3. Clean the crankshaft assembly in solvent and
dry with compressed air. Lubricate the bearings
with injection oil to prevent rusting.
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14
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10 5
11
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10 7
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5 12 3
0
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Q
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g
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