Enclosed Trailer Door Spring 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.

Enclosed trailer door spring adjustment.

My trailer door is an easy 500 lbs and as i remember it has 5 turns on the springs. The torsion springs on our trailer door need adjustment. Closest to the cargo door down low taped to the existing wiring is the plug connector for the trailer. How to choose the correct dual ramp door spring for an enclosed trailer.

The door of the enclosed trailer is hefty which is not so easy to handle manually. 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. Figure a way to put a turn or two into the spring and hold it in place or have someone help you. The door is very hard to open but also hard to close.

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. Be extremely careful adjusting those springs the tension is calculated by the weight of the door to number of turns. Then gently start pulling the side panel free left side from floor to window to back door. Put the cable back on and try the door again.

A person can t take the whole existence weight of the door. Springs would adjust on the enclosed trailer to take the majority of the weight off the gate or ramp. Pry the lighter socket out and seperate the connection. The door must be open during the adjusting process.

The springs refer to heavy duty torsion springs which may work as lift assist. Keep adding tension till it opens and closes properly. Ramp spring recommendation for 72 inch wide door that weighs 160 lbs. Again be very careful and have a helper with you.