Torsion Spring Installation and Adjustment
This article posted courtesy Clopay Doors
Please read and understand these instructions completely before proceeding with the installation of torsion springs. Carefully follow these instructions to avoid personal injury or property damage.
Important Safety Information
Torsion springs can be very dangerous if they are improperly installed or mishandled. Do not attempt to install them yourself unless 1) you have the right tools and reasonable mechanical aptitude or experience and 2) you follow these Instructions very carefully.
Materials Required for Torsion Spring Installation:
Step 1 - Preparing the door frame
It is important that the torsion spring assembly be firmly and securely attached to the frame of the garage.
Refer to Figure TOR-1 for the configuration of 2" x 6" wood jambs.
Important: The wood anchor pad must be made of a Grade 2 or better southern yellow pine (also known as southern pine or yellow pine). Other acceptable types of wood for this application are beech, birch, hickory, and oak. The wood must be free of splits and cracks. Do not use wood labeled as spruce pine fir (or SPF).
Each side jamb and the center anchor pad should extend 12" above the top of the opening for 12" radius horizontal track and 15" above the top of the opening for 15" radius horizontal track.
The wood anchor pad must be attached to the frame of the garage with at least four 3/8" x 4" long lag screws for wooden frames or four 3/8" x 4" long sleeve anchors for concrete frames. (one at each corner). The four fasteners must be installed no closer than 1-1/2" from the sides and the ends of the anchor pad. These fasteners must be embedded into the frame of the garage, not the drywall or sheet rock. The wood anchor pad and fasteners are not supplied. Do not use nails.
NOTE: The wood anchor pad can be off-center to the width of the opening by up to 10" in either direction.
Step 2 - Assemble the torsion springs to the spring tube
Lock the door in the down position securely using door lock or locking pliers. This must be done to prevent the door from prematurely opening which could cause an injury.
NOTE: You need an assistant in Step 4. If your garage has only one entrance, be sure you, the assistant, and the tools you need are inside before you lock the door. Your door will have either one or two torsion springs. Each torsion spring consists of spring coils, stationary cone, and a winding cone (FIG. TOR-2). The spring coils are color-coded depending on the spring size and the winding cone is color coded separately, either red or black. The color on the winding cone is to help identify on which side of the door the spring is to be used.
Black winding cone torsion springs are used on the right side of the door and red winding cone torsion springs are used on the left side of the door when viewing the door from the inside looking out. Failure to install the torsion springs on the correct side will cause your door to function improperly and could result in serious injury. (NOTE: If you have low headroom, these instructions DO NOT APPLY. Consult supplemental low headroom instructions.)
Slip the torsion springs onto the spring tube, the red winding cone on the left end, the nylon center bearing, center bearing plate, and the black winding cone torsion spring on the right end (FIG. TOR-3). Cable drums go on next, the red drum on the left, black drum on the right. The set screws on the drums face the springs.
Step 3 - Attach mounting plates to garage door frame
Fasten the bottom of the end bearing plate to the horizontal angle with (2) 3/8" x 3/4" long hex head bolts and hex nuts. The bottom of the end bearing plate is identified by two parallel rows of two slots. Please make sure to use the bottom two slots for 12" radius horizontal track, and the upper two slots for 15" radius horizontal track. When properly mounted the torsion tube is level and straight (FIG. TOR-4A).
Before installing any lag screws, it is important to drill 3/16" pilot holes where the lag screws are to be attached. Fasten the wall flange on the end bearing plate to the wood jamb with (1) 5/16" x 1-5/8" long lag screw. Drill 3/16" pilot holes where lag screws are to be installed. On 12" radius horizontal track, each end bearing plate should also be attached with 3/8" x 3/4" carriage bolts and 3/8" nuts (FIG. TOR-4).
Step 4 - Attach assembled torsion springs to mounting plates
With an assistant, lift the complete torsion spring tube assembly and slide the ends of the tube into the bearing on the end bearing plates. With the tube level, mount the center bearing plate to the center anchor pad using (2) 5/16" x 1-5/8" long lag, red-coated screws.
NOTE: Red-headed fasteners must be installed for the attachment of center bearing plate to indicate this part will be under extreme tension once spring is wound (FIG. TOR-5).
Before mounting the center bearing plate, drill (2) 3/16" pilot holes for the lag screws. These pilot holes must be no closer than 1-1/2" from the sides and ends of the wood anchor pad. The center bearing plate resists the considerable counter torque of the springs. This wood anchor pad must be installed to the frame of the garage as stated in Step 1.
Step 5 - Install torsion spring cables
The cable that is attached to each bottom bracket is brought up between the wall and roller shafts to the cable drum. This cable is placed in the notch on the cable drum. Turning the cable drum and sliding it up tight against the end bearing plate removes the cable slack. Make sure the cable follows the grooves in the cable drum. The set screws on the cable drum should be tightened with a 3/8" box wrench while holding the cable taut. Locking pliers clamped to the torsion spring tube maintain tension on the cable (FIG. TOR-2). This procedure should be repeated on the opposite side.
Step 6 - Adjust torsion spring with winding bars
Check for a straight line drawn across the length of the spring(s). If no line is present, draw one using a piece of chalk. This will be used to indicate the number of turns on the spring(s). After inserting the two winding bars all the way into the winding cone, wind the springs 1/4 turn at a time in an upward direction as shown in FIG. TOR-5. The number of turns is shown in the table in FIG. TOR-2. The tail of the torsion spring coil points in the direction that the spring is wound (FIG. TOR-5A).
NEVER use screwdrivers or other substitutes for winding bars! Stand to the side of bars. Be sure to insert the bars all the way into the hole.
Secure each spring with the set screws on the winding cone. (Caution: Set screws should be turned from 3/4 to one full turn after they have made contact with the tube.) On doors with two torsion springs, each torsion spring should be wound the same number of turns. Remove the locking pliers.
Step 7 - Carefully test door function
Unlock the door, slowly raise the door and prop it about halfway open.
This is the first time the new door is being opened. If the tracks are not correctly aligned or the back hangers are not strong enough, the door may fall. Proceed slowly and carefully.
Check to be sure the horizontal tracks are parallel with each side of the door. Make sure all the lag screws are securely fastened. With the door about halfway open, make sure the rollers do not come out of the top brackets more than about 1/2 inch. If adjustment of the rear track hanger is necessary, the door must be locked in the closed position because the weight of the door is supported by the rear hangers.
NOTE: If the torsion springs do not increase in tension as the 1/4 turns are added to the springs, then you probably have the torsion springs reversed. (See Step 2.)
Step 8 - Final adjustments, if necessary
To adjust torsion spring tension, the door is locked in the down position. With locking pliers clamped on the torsion tube, winding bars are used to wind the springs tighter to increase tension. Tension is reduced by removing turns. When two springs are used, both sides should be adjusted the same. Adjustments should be made in 1/4 turn increments.
NEVER adjust center bearing plate or red-headed fasteners after springs are wound. Be prepared to handle a strong force when reducing tension on a torsion spring. Use winding bars only, and stand to the side.