The trolley is responsible for pushing or pulling the opener arm along the chain so as to open and close the garage door.
How do you attach a garage door chain.
Attach the rail to the motor compartment.
You simply pull back on the emergency cord and it disengages.
Grasp the chain 1 foot from where it connects to the end of the threaded chain anchor.
Just pull the red cord straight down to disengage the door from the opener.
This is great if your garage door is near a living area like a living room or bedroom.
First you need you to make sure the garage door is open.
Trying to reengage your garage door opener with the door closed doesn t work.
You ll have to do this manually since it isn t attached to the operator.
Attach the straps to the irons with hex head screws.
Next up is reattaching the gear to the track.
You should have 1 2 inch of play in the chain.
Now you re ready to re attach the door in four easy steps.
Tightening your garage door chain is a simple matter of turning the right nut.
Pull the chain toward the garage door and hold it in position.
Ie if the motor has just turned to close the door make sure the chain trolley is in the closed door position vise versa for up.
This video from sears partsdirect shows how to replace the chain and cable assembly on a chain drive garage door opener.
Belt driven garage door openers also tend to last longer than chain.
Make sure the chain does not hang or is too tight too.
Then feed the belt or chain through the end of the rail around the pulley then around the other end at the motor.
Press down on the chain with your finger.
Attach the straps to the power unit with the hardware provided.
There is a threaded eye bolt that can be adjusted to get enough slack to attach the chain.
If you have ever needed to disconnect the opener from the door due to pow.
Thread the nut s facing the door clockwise until it meets the bracket then release the chain.
Make sure the chain and motor are in the sane position.
Test opening the garage door several times to make sure it clears the opener.
The first key is that you have to open your garage door.
Located along the rail the chain an.
This is the largest piece of the opener and it will be positioned furthest from the garage door.
The one you re looking for is attached to a bolt found at the spot where the trolley or carriage connects to the rail.
Install the pulley at end of rail opposite the motor compartment.
If you are in the market for a new garage door opener you might consider upgrading to a belt driven garage door opener.
Once that s done you can move the whole door back manually.
Belt driven openers are a little more expensive but are much quieter.
