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Disc Brake Maintenance

Storage Precautions for Trailers equipped with disc brakes
Trailers with disc brakes, when stored for extended periods of time, can exhibit a condition known as
"Lot Lock". This is common at auto dealerships where cars sit un-moved for long periods of time and
the brake pads "freeze" to the rotors.

"Lot Lock" is caused by corrosion buildup between the brake pad and rotor. It is more prevalent with
metallic brake pads but can happen with organic and ceramic pads as well. This is due to the rotor
surface of exposed steel not having a corrosion resistant coating where the pads come in contact with
the rotor.

This is not a warranty item.

Pulling a trailer for the first time that has been stored for a while can easily have "Lot Locked" wheels. If
the trailer is empty and does not have a boat or weight on the trailer, it will be easy to "skid" the tires.

If possible, test the trailer first by pushing the trailer backward then forward to verify the wheels roll
freely. If locked, try rocking the trailer back and forth to free the brakes. If this does not work, try using a
wide blade putty knife to create space between the rotor and brake pads. If the trailer has been sitting a
long time, it may require the brakes be removed and the pads and rotors cleaned.

To keep your brakes from "freezing" to the rotor:

> Store the trailer in a protected area

> If you cover the trailer (and boat) with a tarp, make sure there is air circulation around the brake
area. A closed tarp can create a "green house" effect and accelerate corrosion.

> If your actuator uses a "stop flow" solenoid, make sure you have not locked in pressure to the
brakes when you disconnect the trailer. This generally happens when backing into a parking space
that is up hill.

> If storing for a long time, consider using a very light coat of spray paint on the exposed rotor
surface. Be careful not to spray other parts of the brakes or the trailer. After the paint is dry, rotate
the wheels so that the brake pads are on the painted surface. The paint will wear off during the first use.

> Do not use any type of oil, WD40