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

1 Answer

Garage opener cannot close, just replaced gears.

HI, I have a chamberlain 1245 opener that will not close more than a foot or so before reversing. In order to get the door closed, I had to pull the rip-cord release and manually slide it closed. When I tried to re-engage the door to the rip-cord part by pressing the close button, it moved the same distance before reversing, even with the down force cranked to highest. For that reason, I know the door resistance is not the issue as it cannot move the chain alone at highest down force to reconnect the door. I got into this predicament after our opener failed due to the plastic gear being worn completely out. I replaced that gear and the worm gear, regreased everything, hit the button and it opened the garage just fine. It just cannot seem to close it. I have tried to troubleshoot this a lot, as this is the second of two identical units. One difference which may or may not be related is this opener’s motor spindle actually moves slightly laterally while trying to close. In other words, if you are on a ladder and looking at the worm gear when you hit the button, the whole gear moves about ¼” while rotating before moving back when it stops. The inch of exposed spindle at the other side of the motor can be seen moving as well. The other opener has no movement like this. It worked a week ago. Any ideas before I call a pro to put in a new unit?

Posted by on

  • Joseph Chapman
    Joseph Chapman May 11, 2010

    Does this unit have photo eyes? If you hold the wall button will the travler move more?


×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Sniper:

    An expert who has posted more than 50 answers, of which 90% or more were rated as helpful.

  • Expert
  • 98 Answers

If the unit has photo eyes that could be your problem. not reattching the 4 wireing harness from the limit assy. can cause a similar issue.

Posted on Jan 03, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

With my door closed, i push door button to open and the chain and opener continues inthe closing mode. any help?


Shop for sears craftsman liftmaste... on Google


Garage Door Opener Gear...
$31.45
Sears Parts D... Liftmaster 41C4220A Ge...
$21.75
Preferred Do... Chamberlain/l... Sprocket, Gea...
$17.95
eBay Direct Replacement f...
$20.95
Moving Up G... Liftmaster 41c4220a gea...
$31.67
North Shore... Search Results

    Liftmaster Gear And Sprocket Kit 41c4220a Chamberlain ...

    www.sears.com/search=liftmaster%20gear%20and%20sprocket%20...

    Searsmore info. + -. Chamberlain LiftMaster 41C4220A Gear & Sprocket Assembly Kit. $31.40 ... Chamberlain Sears Craftsman Liftmaster 41A2817 Gear Kit. $27.65 ...

Jan 10, 2016 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I replaced the gears in the craftman garage door opener. Now it only moves about a foot and immediately reverses!


DID YOU REINSTALL THE LITTLE "CUP" ON THE MOTOR SHAFT.

IT MUST BE INSTALLED AND PUSHED UP SO THAT IT IS PICKED UP BY THE RPM SENSOR.

THIS WOULD GIVE YOU WHAT YOU DESCRIBE.

Jun 07, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Liftmaster 1265 won't motor more than a foot in the down


Check, The black interruptor cup. See if it has powder from gear on it , Remove particles, And run a Q-Tip between the two little towers on the RPM sensor, Which the interruptor cup rotates into to count rpm cycles.

Dec 31, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door only opens 4 inches then reverses and stops


you need to replace gear when the door is fully closed. then do your tweaking.

Jun 01, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Garage door opener


See your post under Garages in the Garden Web.

May 17, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Garage door opener will not work after gear replacement


From your description it sounds like you forgot to plug in the RPM sensor.

Mar 16, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener will not work after gear replacement


check the end shaft platic cap is installed and runs freely between the rpm sensors.. that might be ur problem..

Mar 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door will not work


Check to see if you plugged in the 4 wire limit assy. harness.

Dec 16, 2008 | liftmaster Chamberlain Garage Door Opener...

Not finding what you are looking for?
Chamberlain Powerdrive PD422D 1/2 HP Security Plus Screw Drive Garage Door Opener Logo

99 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chamberlain Car Audio & Video Experts

Iron
Iron

Level 3 Expert

3018 Answers

yadayada
yadayada

Level 3 Expert

71043 Answers

Are you a Chamberlain Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...