Brake Bleeding / Fluid Change - Polaris RANGER RZR 170 Service Manual

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.
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.
1. Clean master cylinder
surrounding area under front left cab thoroughly to
prevent debris from entering the reservoir, then
remove the cover.
2. If changing brake fluid, remove as much old fluid from
the reservoir as possible with a Mity Vac™ pump or
similar tool. Do not actuate the brake pedal when
reservoir is low.
Mity Vac™ (PN 2870975)
reservoir cover and
9923983 - 2012-2013 RZR 170 Service Manual
© Copyright 2012 Polaris Sales Inc.
3. Add clean brake fluid from a sealed container to the
indicated MAX level of the reservoir. Set reservoir
cover loosely in place to keep debris out, but do not
secure it.
Polaris DOT 4 Brake Fluid
(P/N 2872189)
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 the 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.
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.
BRAKES
"F"
"R"
6.7
6