Arctic Cat Wildcat ROV 2013 Service Manual page 83

Measuring Piston Pin (Outside
Diameter) and Piston-Pin Bore
1. Measure the piston pin outside diameter at each end
and in the center. If measurement is not within specifi-
cations, the piston pin must be replaced.
2. Insert an inside dial indicator into the piston-pin bore.
The diameter must not exceed specifications. Take
two measurements to ensure accuracy.
Measuring Piston Skirt/Cylinder
Clearance
1. Measure the cylinder front to back in six places.
2. Measure the corresponding piston diameter at a point
15 mm (0.6 in.) above the piston skirt at a right angle
to the piston-pin bore. Subtract this measurement from
the measurement in step 1. The difference (clearance)
must be within specifications.
80
Installing Piston Rings
1. Install the expander spring making sure the ends are
aligned on the wire; then install the oil ring with the
ring gap 90° from the spring gap and the marking "E
TOP" directed toward the top of the piston.
ATV-1070
2. Install the second compression ring with the marking
"E TOP" directed toward the top of the piston.
ATV-1069
3. Install the first (unmarked) compression ring; then
rotate the rings so the ring gaps are approximately
180° apart and oriented to the piston pin.
CC127D
GZ168
GZ169A
GZ167