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9924871 R03 - 2014 Polaris Sportsman® 570 EFI Service Manual
© Copyright 2013 Polaris Sales Inc.
9.
Measure the inside diameter of the rear caliper. The
caliper body is a 2-step piston. The rear step is
measured as well as the outside step.
Rear Caliper Piston Bore I.D.
Inner Bore Service Limit: .94” (23.88 mm)
Outer Bore Service Limit: 1.5” (38.1 mm)
10. Inspect caliper piston bore for scratches, severe
corrosion, or galling and replace if necessary.
11. Inspect surface of caliper piston for nicks, scratches,
or damage and replace if necessary.
Assembly
1.
Install new O-rings in the slide bolt bushing holes. Be
sure O-ring and seal grooves are thoroughly cleaned
of all residue, or piston may bind in bore. Apply brake
fluid to piston seals and install carefully with a
twisting motion to ease assembly until fully seated.
2.
Carefully assemble caliper body, making sure O-
rings are properly positioned in groove. Tighten the
caliper anvil bolts and then torque the anvil bolts
evenly to specification.
Caliper Anvil Bolt:
16-18 ft-lbs (22-24 Nm)
BRAKES
