Enclosed Trailer Door Spring Adjustment

How to choose the correct dual ramp door spring for an enclosed trailer.

Enclosed trailer door spring adjustment.

Closest to the cargo door down low taped to the existing wiring is the plug connector for the trailer. Then gently start pulling the side panel free left side from floor to window to back door. Keep adding tension till it opens and closes properly. Figure a way to put a turn or two into the spring and hold it in place or have someone help you.

Put the cable back on and try the door again. Once on the ground it is difficult to lift and once closed it is difficult to open. The torsion springs on our trailer door need adjustment. Ramp door hinge style m 3 spring assist systems are designed to be used on doors with pipe style hinges attaching the ramp door to the trailer frame.

The door must be open during the adjusting process. A person can t take the whole existence weight of the door. Spring type hinges should not be used with m 3 spring assists as they alter the physics of the door and you will not achieve satisfactory lift. Be extremely careful adjusting those springs the tension is calculated by the weight of the door to number of turns.

Ramp spring recommendation for 72 inch wide door that weighs 160 lbs. The springs refer to heavy duty torsion springs which may work as lift assist. This will expose the whole left side of the cargo are about 6 square feet in total. Click for more info and reviews of this m 3 and associates enclosed trailer parts.

The door of the enclosed trailer is hefty which is not so easy to handle manually. Again be very careful and have a helper with you. Springs would adjust on the enclosed trailer to take the majority of the weight off the gate or ramp. Write the number of turns of the spring on the inside of the trailer so you know what to do next time the cable breaks.