Finally tighten the cable and set screws.
How to install garage door drums.
First the lower door panel needs to be set up in the center of the doorway.
When the garage door opens the cables wind around the drum and when it closes the cables unwind off the drum.
The cables attach to the bottom corners of the garage door to some type of bottom bracket.
Cable drums help the garage door remain balanced and level as cables wrap around the drums.
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While the spring provides the counterbalance strength to open the garage door the drums and cables do the actual lifting.
How to install an overhead garage door.
Residential and light commercial garage doors use drums with a four inch diameter while heavier doors use five inch drums.
The cables then wind around the drums and are attached to the bottom bracket on the bottom garage door section.
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You ll need to slide cable drums onto the ends of the spring then thread the cables through the hinges down to the brackets on the lower door panel.
The cables then travel up the height of the garage door and then wind around the drum that is attached to the spring bar.
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The garage door drums are mounted on each end of the spring bar to the inside of the end bearing plate.
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After this insert the cable into the cable drum s slot and set it properly.
If your garage door cable is at an angle or l.