Question about Chamberlain Powerdrive PD422D 1/2 HP Security Plus Screw Drive Garage Door Opener

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My garage door Chamberlain1/2 HP

The chain does not pull the door up nor down. The motor makes whine sound. When it's attached to rail.

MK

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  • Anonymous Feb 02, 2009

    the door open half and clost ,clost half and open.

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  • 112 Answers

You have a stripped gear inside the opener. When you take the cover off it will be full of small white flakes. Replace the entire gear and sprocket assembly

Posted on Jan 30, 2009

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1 Answer

Door will not move up or down,the drive motor just hums.


On the inside of the motor box, check to make sure the chain has not come off the gear.

Apr 05, 2010 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Chamberlain powerdrive door opener will not move. moter hums but chain will not move


CHECK TO SEE IF HE TRAVELER IS AGAINST THE BOLT ON THE RAIL. IF IT IS YOU WILL NEED TO LOOSEN THE CHAIN / BELT TO GET IT TO MOVE THEN ADJUST THE TRAVEL LIMIT SO IT GOES UP / DOWN LESS AND DOESN'T HIT THE BOLT.

HOPE THIS HELPS

Jan 10, 2010 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Chamberlain 1/2HP garage door opener making noise but not opening


TIME TO REPLACE THE GEAR KIT PARTS ARE AVAILABLE IF YOU ARE A REASONABLE MECHANIC IT IS A DOABLE REPAIR - FOLLOW THE INSTRUCTIONS!!!!!

Apr 09, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Garage door doesn't open or close


You should check the gears inside the box, After years , the gears get dry and die, you can by online or from Sears the kit and replace the old gears. I just changed mine...not too difficult :) .

Mar 11, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

3 Answers

Rail bows when door is closed


What you describe is common with those operators.

Jan 01, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

3 Answers

Chamberlain Power Drive 1/2 HP - motor runs but does not move chain


I have the same problem. I just removed the cover and discovered a nylon gear had been worn out. I found lots of shavings inside the cover. The nylon gear is beneath the exterior chain gear. I am looking for information on how to replace it, if I can find the part. If you decide to look at yours, unplug the power and remove the sheet metal screws securing the bottom portion of the cener cover to the front and back covers. Then just remove the upper screws from the center cover. Good luck.

Oct 08, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

5 Answers

Chamberlan 1/2 hp security + not working


sounds like it is out of synch.do you have a manual on this model

May 19, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

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