Question about 1991 BMW 8 Series
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Posted on Jan 02, 2017
1.Check to see if the door is running correctly.
A. Run the door down and pull the emergency release. See if the door will run easily by itself.
1. If it runs hard by hand try lubricating the rollers and hinges with silicone spray or some form of lubricant (not WD 40)
2. If the door is heavy and falls back to the ground, you probably have a spring issue (either broken or needs more tension) in this case call a professional door repair company in your area.
B. If the door runs fine then check the up force on your operator (the box that hangs from the ceiling and reads Craftsman). If the light(s) on your operator go from front and/or back, the force adjustment screw is on the back of the operator. If the lights are on the sides of the operator then the force adjustment screw is on the right side (looking from the back of the operator and facing the garage door). Turn the light blue adjustment screw with the up arrow to a higher number.
Posted on Jan 03, 2009
If there is any grease in the tracks clean it all out. On the rear of your motor unit you will find the 'up force' control. Turn this about 1/4 turn and try. You also should take a good look at your door springs and make sure one isn't broken. Release the door from the opener and open it manually. Shouldn't be heavy and should stay when released about 1/2 way up.
Posted on Dec 07, 2009
SOURCE: garage door opener
You can turn up the up and down force on the motor head to give the unit more power. During colder weather the unit needs more power. Afterward do a 2x4 safety reversal test. thanks, BB
Posted on Sep 03, 2010
Cold weather affects it because the resistance in the doorlock-motor windings increases to the point not enough voltage gets through to be able to open the latch! Replacing the doorlock is the only sure fix in this case as they're not serviceable!
Posted on Oct 08, 2010
Testimonial: "Excellent idea. We will investigate. Thanks Bob"
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