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3. Measure piston pin bore I. D. in two directions (90°
apart). Replace piston and piston pin if out of
specification.
MEASUREMENT
Piston Pin Bore I.D.:
.7877 - .7881" (20.009 - 20.018 mm)
Service Limit:
.7893" (20.05 mm)
4. Measure piston pin O.D. in two directions (90° apart)
at three locations on the length. Replace piston and
piston pin if out of specification.
MEASUREMENT
Piston Pin O.D.:
.7873 - .7875" (20.000 - 20.005 mm)
Service Limit:
.7866" (19.98 mm)
9929399 R01 - 2018-2019 RANGER XP/ CREW 900/1000 Service Manual
© Copyright Polaris Industries Inc.
ENGINE / COOLING / HVAC SYSTEM
PISTON RING REMOVAL
1. Carefully remove top compression ring (B) by hand
or using a ring removal pliers (PV-43570-1).
CAUTION
DO NOT expand the ring more than necessary to
remove it from the piston or the ring may break or lose
radial tension.
• Piston ring pliers: Carefully expand ring and lift it off
the piston.
• By hand: Placing both thumbs on the ring ends,
spread the ring open and push up on opposite side. Do
not scratch ring lands.
2. Repeat procedure for second compression ring (C).
3. The oil control ring (D) is a three piece design
consisting of a top and bottom steel rail and a center
expander section. Remove top rail first, then bottom
rail, then the expander.
3
3.59
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