Disc Replacement; 9929422 R02 - 2017-2019 Ace 900 Service Manual - Polaris ACE 900 2017 Service Manual

BRAKE SYSTEM

DISC REPLACEMENT

1. Remove rear brake caliper (see "Rear Caliper
Removal" page 9.21).
2. Remove wheel hub cotter pin
e
washers .
3. Remove the hub assembly
remove the (4) bolts
hub.
4. Clean the wheel hub mating surface and install new
disc on wheel hub.
u
5. Install new bolts and torque to specification.
TORQUE
Mounting Bolts:
28 ft-lbs (38 Nm)
CAUTION
Always use new brake disc mounting bolts. The bolts
have a pre-applied locking agent which is destroyed
upon removal.
9.24
q w
, castle nut
r
from the vehicle and
y t
retaining the disc
6. Install wheel hub assembly, washers, and castle nut.
Torque the castle nut and install a new cotter pin.
, and
to the
7. Install rear caliper (see "Rear Caliper Installation"
page 9.23). Follow bleeding procedure outlined
earlier in this chapter.
8. Field test unit for proper braking action before putting
into service. Inspect for fluid leaks and firm brakes.
Make sure the brake is not dragging when pedal is
released. If the brake drags, re-check assembly and
installation.
BRAKE BURNISHING PROCEDURE
It is required that a burnishing procedure be performed
after installation of new brake pads to extend service life
and reduce noise.
Start machine and slowly increase speed to 30 mph.
Gradually apply brakes to stop machine. Allow pads and
disc to cool sufficiently during the procedure. Do not
allow pads or disc to become hot or warping may result.
Repeat this procedure 10 times. Do not make more
than 3 stops per 1 mile (1.6 km).
TORQUE
Castle Nut:
110 ft-lbs (149Nm)

9929422 R02 - 2017-2019 ACE 900 Service Manual

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