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2023 OWNER’S MANUAL
One Brake Is Overheating
Possible Cause Remedy
Disc brake caliper
does not permit
the brake pads to
release.
Check the caliper. Sections must be free
to move apart. If frozen in place, remove
and free it up. Caliper piston may freeze
up and prevent pads from retracting.
Clean contaminants out of the piston
cavity. Replace the piston, seal and
protective dust cover boot. Bleed the
brake system.
Damaged or frozen
brake mechanism
Rebuild or replace the brake unit
More Than One Brake Is Overheating
Isolate the problem to the actuator or the brakes by:
• Fully extend the actuator.
• Remove the master cylinder reservoir cap.
• Check that the reservoir is properly filled.
• Manually push the actuator inner member in or use a
screwdriver to stroke the push rod.
• In the first 1/8” of stroke, the reservoir fluid will either remain
completely calm or will swirl around. If the fluid swirls, then this
indicates that fluid is being allowed to return to the reservoir
when the actuator is extended. This means that the actuator is
functioning properly and it is necessary to further troubleshoot
the brakes to determine the cause of overheating.
Possible Cause Remedy
Trailer has been
stored with the
actuator compressed
and rust has
caused the brakes to
freeze up.
Remove the brakes; clean, repair
or replace the components as
necessary(This is best done by an
authorized MasterCraft dealer)
Pinched or kinked
brake lines.
Check the brake lines and replace as
necessary
Pulled breakaway
cable and the push
rod has not been
reset.
Reset the breakaway cable
• If the fluid is not disturbed, as described above, it means the
brake system is remaining pressurized and there is a problem
with the actuator. Troubleshoot the actuator to determine the
cause of the problem.
Potential Issues with the Actuator Include
• The fluid return hole in the master cylinder is clogged or is not
correctly positioned
• Corrosion in the master cylinder is freezing the piston or not
allowing it to fully retract, which is usually caused by a trailer
being stored with the actuator compressed
• Some other malfunction or damage that is keeping the master
cylinder from retracting.
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