3.78
9850043 R01 - 2017-2021 RANGER 500 / 570 Service Manual
© Copyright Polaris Inc.
3. Place the crankshaft in a truing stand or V-blocks
and measure the runout where indicated below with
a dial indicator.
Maximum Runout:
Mag side (3) - 0.00118″ (0.03 mm)
PTO side (4) - 0.00590″ (0.15 mm)
PTO SIDE CRANKCASE BEARING SERVICE
Bearing Removal
NOTICE
Due to extremely close tolerances and minimal wear,
the bearings must be inspected visually, and by feel.
Look for signs of discoloration, scoring or galling. Turn
the inner race of each bearing. The bearings should
turn smoothly and quietly. The outer race of each
bearing should fit tightly in the crankcase. The inner
race should be firm with minimal side to side movement
and no detectable up and down movement.
Bearings are stressed during the removal process and
must not be re-used!
1. Remove and discard the PTO side crankshaft seal.
Replace with new for assembly.
2. If not already performed, remove the screws that
secure the bearing retainer to the case.
3. Remove the retaining ring.
4. Support the crankcase and drive, press, or extract
the three bearings with a blind bearing remover.
REF DESCRIPTION
q
Bearing Retainer Bolt
8 ft-lbs (11 Nm) apply loctite 272
w
Bearing Retainer
e
Bearings:
Apply Loctite® 641 to the inner
race of each of the crank
bearings.
r
Bearing Spacer
t
Retaining Ring
ENGINE / COOLING SYSTEM
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