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9926806 R03 - 2015 - 2016 RANGER ETX / 570 2-SEAT 2015 - 2016 RANGER 570 CREW Service Manual
© Copyright Polaris Industries Inc.
CAUTION
Do not expand the ring more than the amount
necessary to remove it from the piston.
*By hand: Placing both thumbs as shown, spread
the ring open and push up on the opposite side.
4. Repeat procedure for second ring.
5. Remove oil control ring top rail first, then bottom rail.
6. Remove oil control ring expander.
PISTON-TO-CYLINDER CLEARANCE
1. Measure the outside diameter of the piston 9.5 mm
up the skirt and at a right angle to the direction of the
piston pin.
2. Subtract this measurement from the maximum
cylinder size measurement from cylinder inspection.
Piston to Cylinder Clearance:
.0003 - .002″ (.008 - .062 mm)
Piston O.D.:
3.068 - 3.07″ (77.946 – 77.984 mm)
PISTON / ROD INSPECTION
1. Measure piston pin bore inside diameter I.D.(1).
Piston Pin Bore I.D: 0.7244 - 0.7401″ (18.4 - 18.8 mm)
2. Measure piston pin O. D (2). Replace piston and/or
piston pin if out of tolerance.
Piston Pin O.D.:
Std:0 .724 –0 .740″ (18.4 – 18.8 mm)
Service Limit:0 .710″ (18.036 mm)
ENGINE / COOLING SYSTEM
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