Fluid Replacement/Bleeding Procedure - Polaris Trail Boss 330 2003 Service Manual

-- The upper most (inner) bleed screw and brake line (A)
is for the left hand brake system.
-- The lower (outer) bleed screw and brake line (B) is
for the auxiliary brake system.
FLUID
REPLACEMENT/BLEEDING
PROCEDURE
NOTE: When bleeding the brakes or replacing the
fluid always start with the caliper farthest from the
master cylinder.
CAUTION:
Always wear safety glasses.
CAUTION:
Brake fluid will damage finished surfaces. Do not
allow brake fluid to come in contact with finished
surfaces.
BRAKE BLEEDING - FLUID
CHANGE
NOTE: This procedure should be used to change
fluid or bleed brakes during regular maintenance.
A
D
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.
4. If changing fluid, remove old fluid from reservoir
with a Mity Vact (PN 2870975) or similar tool.
9.6
NOTE: Do not remove brake lever when reservoir
fluid level is low.
5. Add brake fluid to the upper level mark on
C
B
6. Begin bleeding procedure with the caliper that is
NOTE: Fluid may be forced from compensation port
(B) when brake lever is pumped. Place diaphragm (C)
in reservoir to prevent spills. Do not install cover.
Refer to Illustration on page 9.4.
7. Slowly pump brake lever (D) until pressure builds
8. While maintaining lever pressure, open bleeder
MAX
reservoir.
Polaris DOT 3 Brake Fluid
(PN 2870990)
DH Caliper
Hand Brake Line
Forward
Auxiliary brake bleeder screw
Hand brake bleeder screw
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.
and holds.
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.
BRAKES
Aux. Brake
Line