Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC
My door does the same thing, I could not raise the rear of the track to get a slope on door due to clearance of garage lamp. So i made a bracket to hold a compressed gas shock to push the door the first 10 inches to help it get moving then gravity takes over. Total of 50.00 invested
Posted on Oct 01, 2012
If you can raise the backhang 3 or 4 inches this will keep tension on the cables. This is a very nice system, however the door must work well for this system to work.
I would also spray WD-40 on the roller shafts, spring and spring shaft bearings.
If you can't solve this, then you may need to have a pro look at it.
Hope this helps,
Posted on Sep 20, 2010
This is better left either to a pro or a phone chat of some kind. Thanks BB
Posted on Sep 05, 2010
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Posted on Jan 02, 2017
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