3.10
9926806 R03 - 2015 - 2016 RANGER ETX / 570 2-SEAT 2015 - 2016 RANGER 570 CREW Service Manual
© Copyright Polaris Industries Inc.
PISTON / RINGS / CONNECTING ROD / CRANKSHAFT / BALANCE SHAFT / OIL PUMP
ITEM
STANDARD SERVICE LIMIT
Piston
O.D. - Measured 90° to pin (9.5 mm) up from
piston skirt
3.068–3.07 in. / 77.946 - 77.984 mm
Piston Pin Bore I.D. .724–.740 in. / 18.4 - 18.8 mm .7100 in. / 18.036 mm
Piston Pin O.D. .708–.7086 in. / 17.995 - 18.00 mm .708 in. / 17.985 mm
Degree of fit Push fit (by hand) 68ºF / 20ºC
Piston
Rings
Installed
Gap
Top Ring
.0074 - .0177 in. / 0.19–0.45 mm
Second Ring
.0074 - .0177 in.. /0.19–0.45 mm
Oil Control Rails .029 - 0.155 in. / 0.76–3.94 mm
Connecting
Rod
Connecting Rod Small End I.D.
.7086–.709 in. / 18.000 - 18.018 mm
Connecting rod small end radial clearance
.0007-.0009 in. / 0.018 - 0.023 mm
Connecting rod big end side clearance
.0059–.0177 in. / 0.15 - 0.45 mm
Connecting rod big end radial clearance
.0009–.0014 in. / 0.023 - 0.038 mm
Crankshaft
Runout Limit (PTO and MAG)
.002 in / 0.05 mm
Balance
Shaft
Runout Limit (PTO and MAG)
.002 in / 0.05 mm
Bearing Journal O.D. (Water Pump End) Inspect by feel and fit. Replace
bearings and / or carrier assembly if
damage or wear is found.
Bearing Journal O.D. (Oil Pump End)
Rotor tip clearance
.0059 in. / 0.150 mm
ENGINE / COOLING SYSTEM
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