9
9928491 R04 - 2017-2018 RZR XP Turbo / XP4 Turbo Service Manual
© Copyright Polaris Industries Inc.
9.27
3. Lubricate the mounting bracket pins
r
with silicone
grease and install the rubber dust seal boots
t
.
4. Compress the mounting bracket and make sure the
dust seals are fully seated. Install the brake pads.
Clean the disc and pads with brake parts cleaner or
denatured alcohol to remove any dirt, oil or grease.
REAR BRAKE DISC INSPECTION
1. Visually inspect disc for scoring, scratches, or
gouges. Replace disc if deep scratches are evident.
2. Use a 0-1″ micrometer and measure disc thickness at
eight different points around the pad contact surface.
Replace disc if worn beyond service limit.
Brake Disc Thickness
.295 ± .008″(7.5 ± .2 mm)
.268″ (6.8 mm)
Brake Disc Thickness Variance:
Service Limit: 0.002″ (0.051 mm)
3. Mount a dial indicator and measure disc runout.
Slowly rotate the disc and read total runout on the dial
indicator. Replace the disc if runout exceeds
specifications.
Brake Disc Runout:
.010″ (0.25 mm)
REAR BRAKE DISC REPLACEMENT
1. Remove rear brake caliper (see Brake Caliper / Pad
Removal, page 9.24).
2. Remove wheel hub cotter pin
r
, castle nut
e
and
washers
w
.
3. Remove the hub assembly from the vehicle and
remove the four studs
q
retaining the disc to the hub.
4. Clean the wheel hub mating surface and install new
disc on wheel hub.
5. Install new studs
t
.
6. Install wheel hub assembly, washers, and castle nut.
Torque castle nut to specification and install a new
cotter pin.
TORQUE
Rear Wheel Hub Castle Nut:
180 ft-lbs (244 Nm)
BRAKE SYSTEM
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