Piston Ring To Groove Clearance Inspection; Piston Ring Installed Gap - Polaris RANGER XP 900 2013 Manual

ENGINE
PISTON RING TO GROOVE CLEARANCE
INSPECTION
1. Measure piston ring to groove clearance
placing the ring in the ring land and measuring with a
thickness (feeler) gauge. Replace piston and rings if
ring-to-groove clearance exceeds service limits.
MEASUREMENT
Piston Ring to Groove Clearance:
Top Ring: 0.0012 - 0.0037" (.030 - .095 mm)
Second Ring: 0.0012 - 0.0030" (.030 - .076 mm)
Service Limit: .0047" (.12 mm)
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9924880 Rev 2- 1/10/2014 - 2013 / 2014 RANGER XP 900 - 2014 RANGER XP 900 / CREW 900 Service Manual

PISTON RING INSTALLED GAP

1. Place each piston ring
the piston to push the ring squarely into cylinder, as
by
shown below.
2. Measure installed gap with a feeler gauge
the top and bottom of the cylinder.
A difference between top and bottom end gap
measurements is a general indication of cylinder taper
(wear). The cylinder should be measured for taper and
3. If the installed gap measurement exceeds the
service limit, replace the rings.
Piston Ring Installed Gap:
Top Ring: .008 - .014" (.20 - .36 mm)
Service Limit: .020" (.50 mm)
Second Ring: .015 - .025" (.37 - .63 mm)
Service Limit: .028" (.70 mm)
Oil Control Rails: .010 - .040" (.25 - 1.02 mm)
Service Limit: .059" (1.50 mm)
Always check piston ring installed gap when installing
new rings and/or a new cylinder.
q
inside the cylinder
NOTE
out of round.
MEASUREMENT
NOTE
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