Specifications

When pulling the trailer forward and the actuator extends, the brake lockout should fall
out of the slot. This ensures that the actuator will function when stopping.
e brake lockout bracket must be re-
moved before towing or the trailer brakes
will not work.
manual bleeding of brakes
e following procedure should be per-
formed only by skilled mechanics. Master-
Cra recommends that it be completed by
an authorized MasterCra dealer.
Check that all hydraulic fittings are secure.
Read and understand all instructions before start-
ing. Two people are required for manual bleeding.
1. Remove the master cylinder reservoir plug
and fill the reservoir with brake fluid. Use ei-
ther DOT 3 (preferred) or DOT 4 automotive
brake fluid. Follow the instructions on the brake
fluid container. Avoid shaking the brake fluid
container and pour fluid slowly to minimize air
entrapment. Let the fluid in the reservoir stand
until it is completely free of air bubbles.
2. IMPORTANT: Before bleeding the brake
lines, bleed the actuator master cylinder. In-
sert a screwdriver through the hole in the
bottom of the inner member and use short
strokes to pry on the push rod (while holding
the safety release bracket up) until no air
bubbles are seen coming from the small ori-
fice hole in the bottom of the master cylinder
reservoir.
3. Start the bleeding procedure on the brake
farthest from the master cylinder.
4. At the brake assembly, connect a transpar-
ent bleeder hose to the bleed screw fitting
on the wheel cylinder and submerge the free
end into a container partially filled with brake
fluid. Do not reuse this fluid.
5. The first person should stroke the push rod
slowly while holding the safety release brack-
et up. The second person opens the bleed
screw fitting. He then closes the bleed screw
fitting BEFORE the first person SLOWLY re-
leases the push rod. Repeat this procedure
until the fluid expelled from the bleeder hose
is free of air bubbles. Remember to always
MasterCra Trailer Manual • Page 17