The chain and cable assembly connects to the trolley and drives the trolley along the rail to raise and lower the door.
Fix garage door opener chain.
This diy repair guide explains how to replace the chain and cable assembly on a chain drive garage door opener.
If the chain and cable assembly breaks the door won t move.
Sometimes the cable will break if it is a combination chain and cable drive system.
How do i adjust it.
Having an automatic door opener in your garage is a great convenience but you have to give the opener and all its parts regular.
You can put the chain back on your automatic garage door opener using a simple adjustment mechanism.
Garage door opener is very strong and seldom does the chain actually break.
Over time the sprocket s teeth can wear and the chain may jump or skip when the opener raises the door.
Chain driven garage door openers should have some slack in the chain for optimal performance.
There are only a few ways that the chain can be tightened.
The chain on my garage door opener seems to be sagging and rubbing on the track.
Chain drive garage door openers have a sprocket that is attached at the top of the motor.
A garage door opener chain may make a lot of noise when you pull it to open your door but it is one of the most reliable types of door openers ever invented.
There may be an adjustment linked to the chain or an adjustment to the length of the door opener track.
Over time though this slack can increase or the gear and sprocket assembly can wear and the chain may pop off the sprockets.
In this case the cable can be replaced fixing the problem.
How to fix a chain drive garage door when it won t open.
Both adjustment types should be done with the door closed and disconnected from.