Polaris R09VA17AA, Service Manual

Page: 130 / 187

6.6
BRAKES
BRAKE BLEEDING / FLUID CHANGE
NOTE: If system is dry (such as if a brake line was
replaced) or if a large amount of air is in the system,
start by bleeding the master cylinder (both front and
rear bleed screws) then bleed the calipers.
1. Clean master cylinder reservoir cover and surrounding
area under front left cab thoroughly to prevent debris from
entering the reservoir. Remove the cover.
2. If changing brake fluid, remove as much old fluid from
reservoir as possible with a Mity Vac™ pump or similar
tool. Do not actuate the brake pedal when reservoir is low.
3. Add clean brake fluid from a sealed container to the
indicated MAX level of reservoir. Set reservoir cover
loosely in place to keep debris out, but do not secure it.
Master Cylinder Bleeding (If Required)
4. Remove protective cap from bleed screw and install a box
end wrench on front or rear screw. Attach one end of a
clean, clear hose on bleed screw and place the other end in
a clean container. Be sure hose fits tightly.
5. Have an assistant slowly pump the brake pedal until
pressure builds, then hold light pressure on the pedal.
6. While assistant is holding light pressure, open bleed screw
until brake pedal travels to the end of its stroke and no more
fluid moves into the clear hose attached to the bleed screw.
Close bleed screw, then have assistant release brake pedal.
NOTE: Do not release brake pedal before bleed
screw is tight, or air may be drawn into the system.
7. Repeat Steps 5 and 6 until only clean fluid appears in the
hose and all air has been purged. Add fluid to reservoir if
necessary to keep fluid at the MAX level.
8. Tighten bleed screw securely and remove hose. Torque
bleed screw to
47 in. lbs. (5.3 Nm) . Install protective cap.
9. Repeat Steps 4 - 8 for remaining master cylinder bleed
screw, then proceed to caliper bleeding procedure.
CAUTION
Always wear safety glasses.
CAUTION
Brake fluid will damage finished surfaces. Do not
allow brake fluid to come in contact with finished
surfaces. This procedure should be used to
change fluid or bleed brakes during
regular maintenance.
Mity Vac™ (PN 2870975)
Polaris DOT 4 Brake Fluid
(P/N 2872189)
CAUTION
Maintain at least 1/2"(1.27 cm) of brake fluid in
the reservoir at all times to prevent air from
entering the master cylinder.
“F”
“R”
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