Polaris 2011 RANGER RZR, Service Manual

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3.33
ENGINE
3
9923142 - 2011 RANGER RZR / RZR S / RZR 4 Service Manual
© Copyright 2010 Polaris Sales Inc.
Piston Removal
1. Remove the circlip. Mark the piston with a white pen to
ensure proper orientation (if reused) during assembly.
NOTE: If the pistons are to be reused, reassemble
the pistons in the same cylinder and direction from
which they were removed.
NOTE: New pistons are non-directional and can be
placed in either cylinder.
2. Remove piston circlip and push piston pin out of piston. If
necessary, heat the crown of the piston slightly with a
propane torch.
CAUTION: Do not apply heat to the piston
rings. The ring may lose radial tension.
3. Remove top compression ring:
* Using a piston ring pliers: Carefully expand ring and lift it off
the piston. CAUTION: Do not expand the ring more than the
amount necessary to remove it from the piston, or the ring may
break.
*By hand: Placing both thumbs as shown, spread the ring open
and push up on the opposite side. Do not scratch the ring lands.
4. Repeat procedure for second ring.
5. Remove the oil control ring.
The oil control ring is a three piece design consisting of a top and
bottom steel rail and a center expander section. The top rail has
a locating tab on the end which fits into a notch (B) in the upper
oil ring land of the piston.
To Remove:
A) Remove the top rail first followed by the bottom rail.
B) Remove the expander.
Compression
Rings
Oil Ring
B