Polaris RANGER 500 2017 Service Manual page 290

ENGINE / COOLING SYSTEM
7. Remove the crankshaft removal / installation tool
from the crankcase.
8. Be sure crankshaft is fully seated and rotates
smoothly.
NOTICE
The crankshaft seal can be replaced with the engine
installed in the chassis. The engine does not have to be
removed and the crankcase does not have to be
separated to replace the crankshaft seal.
9. Lubricate a new crankshaft seal and slide it over the
PTO end of the crankshaft with numbers facing OUT.
Be sure seal lip does not fold back when moving
over the crankshaft flange.
3.134
10. Use the crankshaft removal / installation tool to
properly drive the crankshaft seal into the crankcase.
Crankshaft Removal / Installation Tool
PU-50784
q
• Center plate over the crankshaft so it is resting on
the crankshaft seal.
w
• Center adaptor over the crankshaft end.
• Place the nut and large washer onto the crankshaft
installation screw.
• Insert the crankshaft installation screw through the
threaded portion of the adaptor.
• Fully thread the crankshaft installation screw into the
clutch bolt threads of the crankshaft.
• Firmly hold the crankshaft installation screw with a
wrench while tightening the large nut against the
adaptor.
11. Drive seal until flush with seal bore.
12. Turn PTO crankcase over and support with
crankshaft upright.
9850043 R01 - 2017-2021 RANGER 500 / 570 Service Manual
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