Crankcase; Crankshaft - Arctic Cat EL TIGRE 1980 Service Manual

I
•
•
.
..
..
•
NOTE: If scuffing or seizure marks are too
deep to correct with the sandpaper, it may
be necessary to replace the piston.
4.
5.
Inspect the perimeter of each piston for
signs of excessive ''blowby''. Excessive
''blowby'' indicates worn piston rings or an
out-of-round cylinder.
Using a piece of an old ''keystone-type''
ring, clean each piston-ring groove. Make
sure the letter stamped on the top or inclin-
ed surface of the ring faces upward.
CAUTION
Improper deaning of the
ring
grooves
by
the use of
the
wrong type
of ring-groove cleaner will
result
in
severe damage to the piston.
CRANKCASE
•
1. Wash the crankcase halves in cleaning sol-
vent.
NOTE: Before washing the crankcase
halves, make sure the bearing dowel pins
have been removed and accounted for.
2. Inspect crankcase halves for scoring, pit-
ting, scuffing, or any imperfections in the
casting.
3. Inspect all threaded areas for damaged or
stripped threads.
4· . Inspect the bearing areas for cracks or ex-
cessive bearing movement. If evidence of
excessive bearing movement is noted,
repair by peening the bearing area in a
pinking (saw tooth) pattern using a center
punch.
5. Inspect the bearing dowel pins for wear.
6. Inspect the sealing surfaces of the
crankcase halves for trueness by placing
each crankcase half on a surf ace plate
covered with #400 grit wet-or-dry sand-
paper. Using light pressure, move each half
in a figure eight motion. Inspect the sealing
surfaces for any indication of high spots. A
high spot can be noted by a bright metallic
finish. Correct any high spots by continu-
ing to move the half in a figure eight motion
until a uniform bright metallic finish is at-
tained.
20
Fig. 2·48
CAUTION
Water or cleaning solvent must be used in conjunc·
tion with the wet-or-dry sandpaper or damage to the
sealing surface may result.
CRANKSHAFT
'
A 5 19
1. Wash the crankshaft w/bearing s in clea n-
ing solvent.
2. Inspect the bearings for wear, sco rin g,
scuffing, damage, or discoloration. Rotate
the bearings. Bearings must rot ate freely
and must not bind or feel rough. If any ab-
normal condition is noted, replace the
bearing.
Fig. 2·49
A521
•
•
ri
J
•.