Arctic Cat 2016 Alterra 500, Service Manual

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12

NOTE: During the bleeding procedure, watch the
sight glass very closely to make sure there is always a
sufficient amount of brake fluid. If low, refill the res-
ervoir before the bleeding procedure is continued.
Failure to maintain a sufficient amount of fluid in the
reservoir will result in air in the system.
D. At this point, perform step B and C on the FRONT
LEFT bleeder screw; then move to the FRONT
RIGHT bleeder screw and follow the same proce-
dure.
E. Repeat step D until the brake lever is firm.
4. To bleed the auxiliary brake system, use the follow-
ing procedure.
A. Remove the cover and fill the reservoir with DOT 4
Brake Fluid; then install and secure the cover.
B. Slowly compress the brake pedal several times.
C. Remove the protective cap, install one end of a clear
hose onto the rear bleeder screw, and direct the other
end into a container; then while holding slight pres-
sure on the brake pedal, open the bleeder screw and
watch for air bubbles. Close the bleeder screw before
releasing the brake pedal. Repeat this procedure until
no air bubbles are present.
XR023A

NOTE: During the bleeding procedure, watch the
reservoir very closely to make sure there is always a
sufficient amount of brake fluid. If low, refill the res-
ervoir before the bleeding procedure is continued.
Failure to maintain a sufficient amount of fluid in the
reservoir will result in air in the system.
D. Repeat step B and C until the brake pedal is firm.
5. Carefully check the entire hydraulic brake system
that all hose connections are tight, the bleed screws
are tight, the protective caps are installed, and no
leakage is present.
INSPECTING HOSES
Carefully inspect the hydraulic brake hoses for cracks or
other damage. If found, the brake hoses must be replaced.
CHECKING/REPLACING PADS
The clearance between the brake pads and brake discs is
adjusted automatically as the brake pads wear. The only
maintenance that is required is replacement of the brake
pads when they show excessive wear. Check the thick-
ness of each of the brake pads as follows.

NOTE: As brake pads wear, it may be necessary to
“top-off” the brake fluid in the reservoir.
1. Remove a front wheel.
2. Measure the thickness of each brake pad.
3. If thickness of either brake pad is less than 1.0 mm
(0.039 in.), the brake pads must be replaced.
PR376B

NOTE: The brake pads should be replaced as a set.
4. To replace the brake pads, use the following proce-
dure.
A. Remove the wheel.
B. Remove the cap screws securing the caliper holder to
the knuckle; then remove the pads.
PR237
C. Install the new brake pads.
D. Secure the caliper to the knuckle and/or axle housing
with new “patch-lock” cap screws. Tighten to 20
ft-lb.
CAUTION
This hydraulic brake system is designed to use DOT 4
brake fluid only. If brake fluid must be added, care must
be taken as brake fluid is very corrosive to painted sur-
faces.