Front Caliper Inspection - Crew - Polaris RANGER 500 2018 Service Manual

3. Remove mounting bracket, pin assembly and dust
boot.
4. Thoroughly clean the
disassembly and prepare a clean work area to
disassemble the caliper.
5. While holding the caliper and covering the pistons
with a shop towel, carefully apply compressed air to
the brake line inlet to force the pistons out from the
caliper.
CAUTION
Use caution and always wear safety glasses when
working with compressed air.
NOTE
Do not remove the caliper pistons with a pliers. The
piston sealing surfaces will become damaged if a pliers
is used.
6. Once the pistons are removed, use a pick to carefully
remove the square O-rings from the caliper. O-rings
should be replaced during caliper service.
9928485 R01 - 2017-2018 RANGER 500 / 570 Service Manual
© Copyright Polaris Industries Inc.
7. Clean the caliper body, piston, and retaining bracket
brake caliper before

FRONT CALIPER INSPECTION - CREW

1. Inspect caliper body for nicks, scratches, pitting or
with brake cleaner or alcohol.
NOTE
Be sure to clean seal grooves in caliper body.
wear. Measure bore size
specifications. Replace if damaged or worn beyond
service limit.
MEASUREMENT
Caliper Piston Bore I.D.:
Std: 1.373" (34.87 mm)
Service Limit: 1.375" (34.93 mm)
BRAKE SYSTEM
and compare to
9
9.23