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

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My garage door wont open more than 6 inches with the door attached to the belt, but when I releasae the door load the belt works just fine. It worked fine for 6 months but now i have this problem....

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YOU MAY HAVE A BROKEN SPRING

CHECK TO SEE HOW THE DOOR WORKS MANUALLY - DISCONNECTED FROM THE OPENER. IF YOU CAN'T LIFT IT EASILY THE SPRING MAY NEED TO BE ADJUSTED OR REPLACED.

IF IT LIFTS EASILY BY HAND THEN LUBE (WHITE LITHIUM OR WD-40) THE SPRINGS, HINGES AND OPENER RAIL - TRY IT AGAIN, IF IT STILL REVERSES ADJUST THE OPEN SENSITIVITY 1/8 TURN AT A TIME IF IT TAKES MORE THAN 3/4 OF THE ADJUSTMENT RANGE OR STILL DOESN'T WORK I WOULD HAVE IT LOOKED AT BY A PRO. SOME THINGS YOU CAN LOOK RIGHT AT AND NOT SEE.

HOPE THIS IS HELPFUL

Posted on Oct 05, 2010

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Posted on Jan 02, 2017

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