Over time though this slack can increase or the gear and sprocket assembly can wear and the chain may pop off the sprockets.
How to install craftsman chain drive garage door opener.
Located along the rail the chain an.
It s built for 7 ft.
If the chain and cable assembly breaks the door won t move.
You can put the chain back on your automatic garage door opener using a simple adjustment mechanism.
Chain driven garage door openers should have some slack in the chain for optimal performance.
This video from sears partsdirect shows how to replace the chain and cable assembly on a chain drive garage door opener.
The chain and cable assembly connects to the trolley and drives the trolley along the rail to raise and lower the door.
The hp chain drive garage door opener kit is the entry level opener that s big on value.