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

How to replace garage door worm gear? - Chamberlain Powerdrive PD422D 1/2 HP Security Plus Screw Drive Garage Door Opener

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2 Answers

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Posted on Jan 02, 2017

Chuck

1102 Answers

SOURCE: the garage door is up and travels down a few

If your garage door has the sensors at the base with a laser light, check the aim of them.

Posted on Feb 13, 2011

STEVE WOLFINBARGER

504 Answers

SOURCE: garage door worm and drive gear were replaced.

sounds like the rpm senor may have be out of place - the fingers on the cup must break the field between the sensor pickup

Posted on Apr 28, 2011

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