Burnishing Brake Pads - Arctic Cat 2014 450 Service Manual

4. 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.
CAUTION
Brake fluid that has been drained or bled from the brake
system must NEVER be re-used or severe brake system
corrosion and damage may occur. Always discard used
brake fluid in an appropriate manner.
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.
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.
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.
 NOTE: The brake pads should be replaced as a set.
4. To replace the brake pads, use the following proce-
dure.
A. Remove the cap screws securing the caliper to the
knuckle; then remove the pads.
18
B. Install the new brake pads.
C. Secure the caliper to the knuckle and/or axle
housing with the cap screws with "patch-lock".
Tighten to 20 ft-lb.
5. Install the wheel. Tighten to 40 ft-lb (steel) or 80
ft-lb (aluminum).
6. Burnish the brake pads.

Burnishing Brake Pads

Brake pads (both main and auxiliary) must be burnished
to achieve full braking effectiveness. Braking distance
will be extended until brake pads are properly burnished.
To properly burnish the brake pads, use the following
procedure.
PR376B
Failure to properly burnish the brake pads could lead to
premature brake pad wear or brake loss. Brake loss can
result in severe injury.
1. Choose an area large enough to safely accelerate the
ATV to 30 mph and to brake to a stop.
2. Accelerate to 30 mph; then compress brake lever or
apply the auxiliary brake to decelerate to 0-5 mph.
3. Repeat procedure on each brake system twenty
times.
4. Adjust the auxiliary brake (if necessary).
5. Verify that the brakelight illuminates when the hand
lever is compressed or the brake pedal is depressed.
! WARNING
PR237
PR377B