How to replace garage door cables and bottom brackets, torsion spring door. Garage door cables and bottom brackets should be changed in pairs to insure continuity in over all cable length. This is also a perfect opportunity to replace bottom rollers. Consider replacing your springs at this time. As you will see, you have to unwind, and wind your springs to replace cables, and that is half the battle. Torsion Spring Door Bottom Brackets Replacing garage door cables and bottom brackets is performed differently on torsion spring doors vs. extension spring doors. VERY IMPORTANT!!! CAUTION: Repairing a garage door is a dangerous task. Garage door springs are under extreme tension and require appropriate safety precautions. Realize and understand the risks before undertaking any repair. Your health and safety is the #1 concern. No amount of financial savings is worth jeopardizing your health. Failure to understand/follow the recommendations below could result in property damage, personal injury or death. While all efforts are made to provide accurate information and guidance, it is impossible to predict all repair circumstances. Accordingly, the user agrees that use of this website; products and information contained herein are at your own risk. In no event shall youdoit Door Repair be liable for any property damage, personal injury/death, or any other loss or damage that may result from your use of the information and products provided on this site. All information contained within this site is provided “as-is” without warranty expressed or implied. User assumes all responsibility/risk for use of information and products purchased. Garage Door Cable Do not attempt any garage door related repair unless: 1) You utilize the proper tools and safety equipment. Safety glasses and gloves must be worn at all times. Work boots are recommended. Loose fitting clothing and jewelry should NOT be worn during any repair. 2) You must possess a reasonable amount of mechanical aptitude and experience. 3) You are physically able to complete the task (climbing ladders, using wrenches and installing springs require a reasonable amount of physical strength, agility and ability). 4) You are able to completely read, precisely follow/understand the instructions. If you have any doubts about your ability to perform the work safely, we recommend you contact a door professional to complete your repair. Tools needed: Winding Bars Wrenches, Sockets and Ratchet 3/8" - 7/16" - 1/2" Ladder Locking Pliers C Clamps File Gloves Safety Glasses Rollers 1 YOU WILL NEED TO COUNT THE AMOUNT OF 1/4 TURNS THAT ARE REMOVED AND RETURN THE SAME AMOUNT WHEN RE WINDING SPRINGS 10 5 Using a proper winding bar, insert winding bar into winding cone. Unplug garage door opener 2 Disconnect garage door opener from garage door 6 When the set screws are loosened, the winding bar will move towards the garage door. In fact, you can rest the winding bar against the door. 7 3 Next, insert the second winding bar into the next opening in the winding cone. Lift the winding bar slightly and remove the first winding bar. 11 INSURE THAT THE WINDING BAR IS INSERTED THE FULL DEPTH OF WINDING CONE. Close door and attach clamps or locking pliers to door track above any roller. 8 STOP! READ THESE INSTRUCTIONS IN THERE ENTIRETY BEFORE PROCEEDING 4 We have wrapped tape on the winding bar to indicate full depth that winding bar must be inserted. 9 Position ladder in a manner that your upper body will be off to one side of the winding cone. 2 Continue to unwind the spring until all of the tension has been removed. 12 Repeat this process if your door has two torsion springs. Holding the winding bar with a firm grip, loosen the set screws. copyright © 2008 youdoitstore.com ALL TENSION MUST BE REMOVED FROM ALL SPRINGS BEFORE PROCEEDING. 18 22 13 Remove bottom bracket. 14 Loosen set screws on cable drum. 15 16 19 Starting with the cable drum to your left, facing the door, insert cable into the slot on the cable drum. Take care to insure that the cable is properly set into the cable drum. INCORRECT 23 Remove cable from bottom bracket. 20 CORRECT 24 25 Install new cable onto bottom bracket. 21 26 Remove cable from cable drum. 17 Remove bottom lag screw from jamb bracket. Thread cable up to cable drum. Repeat process on opposite side of garage door. Slide cable drum over to the bearing plate, and turn drum in a counterclockwise direction until the cable is tight. Insure that the cable is in the first groove of the cable drum. 3 copyright © 2008 youdoitstore.com 27 Reposition you ladder in a manner that your upper body will be off to one side of the winding cone Test grip of set screws 33 31 Before removing the final winding bar from the winding cone pull down slightly on the winding bar to ensure that the set screws are holding the winding cone to the shaft. Now tighten the set screws DO NOT OVER TIGHTEN 28 34 Insert winding bar into the opening in the winding cone, INSURE THAT THE WINDING BAR IS INSERTED THE FULL DEPTH OF WINDING CONE 32 While holding the cable taught, position locking pliers on the shaft, and against the header, this cable drum is now set. IF WINDING CONE TURNS ON THE SHAFT, TIGHTEN SET SCREWS FURTHER BEFORE REMOVING FINAL WINDING BAR. 29 When you have determined that the winding cone is firmly set, remove winding bar. Move to the opposite side of the door. Insert cable into cable drum. Again taking care to insure that the cable is properly positioned in the cable drum, and that it is following the first groove in the cable drum. 30 35 Lift winding bar up, towards the ceiling until the next opening in the winding cone is in position to accept the second winding bar (¼ turn). Insert second winding bar into winding cone opening. Repeat process on second spring if you have a two spring door. 36 ONLY INCREASE OR DECREASE SPRING TENSION BY NO MORE THAN 1/4 TURN AT ANY ONE TIME. Slide cable drum over to the bearing plate. Turn cable drum in a clockwise direction until the cable is tight. Tighten set screws. DO NOT OVER TIGHTEN Remove first winding bar. Lift second winding bar towards the ceiling. Repeat this process until you have achieved the correct amount of total turns. REFER TO OUR WINDING CHART IF IN DOUBT. YOU MUST NOT OVER WIND TORSION SPRINGS. Remove locking pliers from the door shaft. WITH YOUR FOOT FIRMLY ON THE GARAGE DOOR, remove clamp from track. Firmly holding onto the lift handle on the garage door, SLOWLY raise the garage door. Tighten set screws. 4 DO NOT OVER TIGHTEN copyright © 2008 youdoitstore.com Be mindful of the balance of the garage door as you raise it. Does it seem heavy? Does it seem to be opening to fast or strong? 39 Open garage door fully. Does the door clear the opening? Close the door, does it stay on the floor? All of these issues can be addressed by adding or subtracting spring tension. As little as ¼ turn of spring tension can affect a garage doors balance. Door hard to pull down and won’t stay on the floor. Reduce spring tension Plug garage door open into a grounded outlet. Test system. Door hard to open and won’t stay fully open. Increase spring tension ONLY INCREASE OR DECREASE SPRING TENSION BY NO MORE THAN 1/4 TURN AT ANY ONE TIME. YOU MUST CLAMP DOOR SHAFT TO HEADER OR CEILING ON ALL SINGLE SPRING DOORS BEFORE ADJUSTING SPRING TENSION. 37 Only increase, or decrease spring tension by no more than ½ turn at any one time. TEST DOOR 38 Reattach garage door opener. 5 copyright © 2008 youdoitstore.com Winding Chart Cable drum circumference = amount of turns on torsion spring Circumference of Cable DrumDoor Height 6' 6"Door Height 7'Door Height 7' 6"Door Height 8' 11.5" 8.3 8.8 N/A N/A 11.75" 8 8.5 8.9 9.4 12" 7.8 8.3 8.8 9.3 13" 7.2 7.6 8.1 8.5 13.5" 7 7.4 7.9 8.3 13.750" 6.9 7.3 7.8 8.2 14" 6.8 7.2 7.6 8 14.5" 6.6 7 7.4 7.8 16" 5.9 6.3 6.6 7 17" 5.5 5.8 6.2 6.5 This chart can be used to determine the proper amount of turns to apply to your torsion spring or springs. A turn is defined as one complete revolution of the torsion spring on the door shaft. Tension is applied in quarter turns, It takes four quarter turns to apply one complete turn to your spring. You will need to take a few measurements before referring to our chart. Cable drum circumference and door height. Circumference of your drum can be determined by wrapping a small length of string around the cable drum, on the flat portion of the cable drum, and then measuring the amount of string it takes to go completely around the circumference of the cable drum. Door height. Simply measure the height of your garage door. Measure from the inside, as the door can overlap the opening. Now, find the circumference of your cable drum on the chart and match it to your door height. This will be the total amount of turns you will need to apply to your torsion spring. This chart represents the proper amount of turns needed to open your garage door properly. You may need to add ¼ or ½ turn of tension to get your door to balance properly. Over time garage doors will “ gain weight “ due to moisture, paint and other factors. This is the reason additional tension may be needed. Refer to our directions as to adding or removing spring tension. WORK SAFE !! 6 copyright © 2008 youdoitstore.com
© Copyright 2024