You will be working with or near the electric motor high voltage wiring and the circuit board.
How to change garage door opener gear.
In order to get at the gear you will need to disconnect the top rail from the front.
How to replace a garage door opener gear step 1 unplug opener.
Do the edges appear to be worn down or shredded.
This is a video on how to change the gear sprockets in a craftsman garage door opener.
Pull the emergency release rope and then shut the garage door by hand.
Before doing any work on the garage door opener you must unplug the opener to guard against the.
If the gears have screwed up teeth you can likely just replace them to solve the problem.
Examine the white plastic gears.
Position a work table near the area under your motor unit to hold the garage door opener.
Remove the 3 nuts that hold the motor to the frame and then remove the worm gear.
Lower the motor unit down.
This was a craftsman model 139 53976srt.
Use a step ladder to access the garage door opener s power cord and motor unit.
Shine the flashlight directly at the gear set.
Unplug the garage door opener.
Remove the chain and cable assembly.
Install the new worm gear making sure the roll pin is properly seated in the new gear.
Step 2 disconnect top rail.
Only replace the parts that are used on your garage door opener.
How to replace worn out or stripped linear garage door opener gears unplug the power cord.
Re install other components in reverse order.
If not your opener might simply be shot and you ll need a new one.
If so you will.
Lower the garage door if necessary.
Remove retaining screws from the cover.