9.24
BRAKES
9924125 - 2013 RANGER RZR / RZR S / RZR 4 Service Manual
© Copyright 2012 Polaris Sales Inc.
REAR BRAKE DISC
Disc Inspection
1. Visually inspect disc for scoring, scratches, or
gouges. Replace the disc if any deep scratches are
evident.
2. Use a 0-1” micrometer and measure the disc
thickness at e
ight different points around the pad
contact surface. Replace disc if worn beyond service
limit.
3. Mount a dial indicator and measure disc runout.
Slowly ro
tate the disc and read total runout on the dial
indicator. Replace the disc if runout exceeds
specifications.
Disc Replacement
1. Remove rear brake caliper (see “REAR CALIPER
SERVICE”).
2. Remove wheel hub cotter pin, castle nut and washers.
3. Remove the hub assembly from the vehicle and
rem
ove the (4) bolts retaining the disc to the hub.
4. Clean the wheel hub mating surface and install new
disc on
wheel hub.
5. Install new bolts and torque to spec
ification.
Brake Disc Thickness:
New: .188” (4.78 mm)
Service Limit: .170” (4.32 mm)
Brake Disc Thickness Variance:
Service Limit .002” (.051 mm)
difference between measurements
Brake Disc Runout:
Service Limit .010” (.254 mm)
Measure
Thickness
Front
View
Side
View
Brake Disc Mounting Bolts:
28 ft-lbs (38 Nm)
Always use new brake disc mounting bolts. The
bolts have a pre-applied locking agent which is
destroyed upon removal.
Cotter
Pin
Washers
Nut
(4) Bolts
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