Search: Posts Made By: Doorman2722
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Replies: 6
Views: 139
Posted By Doorman2722

If the door is pushed to one side check for a...

If the door is pushed to one side check for a stuck roller. It's usually the top one on the side that the cable came off. Make sure all roller stems are lubricated and free to move within the hinge...
Replies: 6
Views: 139
Posted By Doorman2722

Norm, make sure you grip the tube so it can't...

Norm, make sure you grip the tube so it can't move to... do it on the left side next to the left bearing, otherwise if you loosen the right drum the spring will want to pull the shaft to the right....
Replies: 6
Views: 139
Posted By Doorman2722

It's hard to picture in my mind, can you post...

It's hard to picture in my mind, can you post some pictures. The best/ safest thing you can do is vice grip the door open on both sides and then vice grip the tube so it can't move and then you can...
Replies: 3
Views: 142
Posted By Doorman2722

They will not work on an extension spring door or...

They will not work on an extension spring door or a low headroom torsion spring door.
Replies: 6
Views: 120
Posted By Doorman2722

Try calling Chamberlain, they manufactured the...

Try calling Chamberlain, they manufactured the opener and branded it for craftsman. Most Liftmaster/ Chamberlain motors have a life time warranty, some have a 5 Year. I believe it is stated in the...
Replies: 15
Views: 511
Posted By Doorman2722

24 quarter turns divided by 4 = 6 turns. A 7 foot...

24 quarter turns divided by 4 = 6 turns. A 7 foot high door requires 7.5 turns that is why your cables come off. Your spring is larger than what is required for the weight of your door that is why...
Replies: 2
Views: 140
Posted By Doorman2722

the 2 layer will last for the most part, but over...

the 2 layer will last for the most part, but over time It will get holes and small tears that's inevitable. I recommend the 3 layer... stronger and will last longer.
Replies: 7
Views: 220
Posted By Doorman2722

I would put a QMI shutter on there, It light...

I would put a QMI shutter on there, It light weight and doesn't require a lot of headroom https://qmiusa.com/
Replies: 15
Views: 511
Posted By Doorman2722

Are the cables the same length? Are the cables...

Are the cables the same length? Are the cables the same diameter? how many turns did you put on the new springs? Was the door sitting level when you set the drums?
Replies: 5
Views: 284
Posted By Doorman2722

The intermittent failure of the remotes and...

The intermittent failure of the remotes and outdoor keypad can be caused by interference from LED/ CFL or any FL or other electronics (these devices can transmit a signal to block radio signal from...
Replies: 5
Views: 284
Posted By Doorman2722

First off I don't recognize that model number,...

First off I don't recognize that model number, are you sure on that? I have been fixing Liftmaster for 24 years and have never replaced or heard of anyone replacing a bad motor. I would say it's very...
Replies: 15
Views: 511
Posted By Doorman2722

A bigger diameter spring wire has to be longer...

A bigger diameter spring wire has to be longer than the original spring to be equal to the torque. Using a bigger wire size will give you more cycles with the spring. If you haven't ever changed a...
Replies: 15
Views: 511
Posted By Doorman2722

Is that the weight with no spring tension? or...

Is that the weight with no spring tension? or with one spring still wound? You need the dead weight to calculate... also the door doesn't look 16 foot wide. You can actually down load the app your...
Replies: 15
Views: 511
Posted By Doorman2722

Was anything added to the door that might make it...

Was anything added to the door that might make it heavier like insulation or reinforcing struts? Is there anyway you can weigh the door? I can tell you the right spring. Do you think the spring was...
Replies: 4
Views: 380
Posted By Doorman2722

Yes put a light coat of grease on top and...

Yes put a light coat of grease on top and bottom... Garage door track, NO!
Replies: 2
Views: 373
Posted By Doorman2722

Only Chamberlian /Liftmaster would have a...

Only Chamberlian /Liftmaster would have a schematic... I've never seen one. I believe the voltage is something like 5 volts at the button (AC i think). Thy a short jumper wire from terminal 1 to...
Replies: 3
Views: 381
Posted By Doorman2722

Check the trolley, I would bet it is jammed...

Check the trolley, I would bet it is jammed against the 5/16 stop bolt.... loosen the chain, push button and run the opener towards the closed position then immediately unplug the opener to stop it....
Replies: 7
Views: 757
Posted By Doorman2722

I believe the buttons on the back are for the up...

I believe the buttons on the back are for the up and down force settings. I think this model has a plastic piece that attaches to the chain and hits a switch on top of the opener, both for open and...
Replies: 5
Views: 517
Posted By Doorman2722

Check the trolley, if the chain was originally...

Check the trolley, if the chain was originally mounted on the left side and the new opener requires it to be mounted on the right side... it will work backwards
Replies: 5
Views: 517
Posted By Doorman2722

Something has been mounted backwards? Like the...

Something has been mounted backwards? Like the trolly car. We need pictures please
Replies: 37
Views: 1,308
Posted By Doorman2722

Hook the arm to the door first then have someone...

Hook the arm to the door first then have someone help you...push the open button then hit the stop button to move the trolley towards the open position. Then slightly lift the door up then hook up...
Replies: 37
Views: 1,308
Posted By Doorman2722

That threaded rod is for chain tension, it will...

That threaded rod is for chain tension, it will not move the car. The chain tension looks good, leave it alone.
Replies: 5
Views: 659
Posted By Doorman2722

I've seen worse but move it if you can. Also you...

I've seen worse but move it if you can. Also you should put a kicker/anti sway from one of the drops to the angle iron on the ceiling that is holding the motor to ceiling.
Replies: 7
Views: 757
Posted By Doorman2722

I can't find a manual for that model, can you...

I can't find a manual for that model, can you post a picture of the opener
Replies: 37
Views: 1,308
Posted By Doorman2722

aka pedro... no the arm should separate from the...

aka pedro... no the arm should separate from the trolley when you pull the rope. This opener is a Liftmaster commercial opener and that is the way they are designed. Residential the arm will remain...
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