Arctic Cat 700 Diesel ATV 2007 Service Manual page 92

13. Using an appropriate thickness gauge, measure the
ring end gap. End gap must be according to speci-
fications.
NOTE: If ring gap is less than specified, install
the ring in a soft-jawed vise and use a fine flat file
to file the ends of the ring, checking end gap fre-
quently.
14. After all piston ring end gaps are within specifica-
tions, install the rings on the pistons using the fol-
lowing procedure.
A. Place the oil expander ring in the 3rd (bottom)
ring groove; then install the oil scraper ring
over the expander making sure the oil scraper
ring end gap is not directly in line with the
expander spring ends.
B. Install the 2nd (middle) compression ring in the
middle ring groove with the TOP or UP mark-
ings on the ring directed toward the top of the
piston.
C. Install the 1st (top) compression ring in the top
ring groove with the TOP or UP markings on
the ring directed toward the top of the piston.
NOTE: The top compression ring is full chrome
(silver) and the middle compression ring has a par-
tial chrome band on the bottom side. Both rings
have a chamfered inner radius. The chamfer must
be directed upward.
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15. Remove the connecting rod caps keeping bearing
inserts in place; then position the rings on the pis-
tons as shown in the following illustration.
16. Apply clean engine oil to the rings and cylinder
wall; then using a suitable ring compressor, com-
press the rings sufficiently to install the piston in
the cylinder.
17. Rotate the crankshaft so the crankshaft rod journal
corresponding to the piston being installed is at
bottom-dead-center (BDC).
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