Brake Bleeding / Fluid Change - Polaris A12MH46AX Service Manual

Brake Bleeding / Fluid Change

NOTE: When bleeding the brakes or replacing the
fluid, always start with the caliper farthest from the
master cylinder.
CAUTION
Always wear safety glasses during these
procedures. Brake fluid will damage finished
surfaces. Do not allow brake fluid to come in contact
with finished surfaces.
NOTE: Do not remove brake lever when reservoir
fluid level is low.
This procedure should be used to change fluid or bleed
brakes during regular maintenance.
1. Clean reservoir cover thoroughly.
2. Remove screws, cover and diaphragm (C) from
reservoir.
3. Inspect vent slots (A) in cover and remove any debris
or blockage.
D
A
4. If changing fluid, remove old fluid from reservoir with
a Mity Vacä pump (PN 2870975) or similar tool.
Fill Line
Sight Glass
C
B
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
5. Begin bleeding procedure with the caliper that is
farthest from the master cylinder. Install a box end
wrench on caliper bleeder screw. Attach a clean,
clear hose to fitting and place the other end in a clean
container. Be sure the hose fits tightly on fitting.
Bleeder Screw
NOTE: Fluid may be forced from supply port (B)
when brake lever is pumped. Place diaphragm (C) in
reservoir to prevent spills. Do not install cover. See
Illustration above.
6. Slowly pump the brake lever until pressure builds and
holds.
7. While maintaining lever pressure, open bleeder
screw. Close bleeder screw and release brake lever.
NOTE: Do not release lever before bleeder screw is
tight or air may be drawn into caliper.
8. Repeat procedure until clean fluid appears in bleeder
hose and all air has been purged.
necessary to maintain level in reservoir.
CAUTION
Maintain at least 1/2", (1.27 cm) of brake fluid
in the reservoir to prevent air from
entering the master cylinder.
9. Tighten bleeder screw securely and remove bleeder
hose. Torque the bleeder screw to specification.
Bleeder Screw Torque:
25-30 in.lbs. (2.80-3.40 Nm)
10. Repeat procedure Steps 5-9 for the remaining
caliper(s).
BRAKES
Add fluid as
= T
9.5
9