Remove the cotter pin connecting the trolley with a pair of pliers.
How to replace garage door opener trolley rack.
In order to remove and replace the trolley first you will need to have help holding the opener or you need to take it down to the ground.
Once the wear and tear is too bad the garage door won t open at all or will open but not easily.
Close the door by hand so that the trolley is a the outer end of the rail.
Position a ladder underneath the trolley.
I think the part that broke is a sub component of the trolley.
A quick diy video on how to replace a trolley on a chain drive garage door opener.
They help to carry and balance the weight of the garage door so your garage door lifts properly.
Constant rubbing of the rail beam along the side of the trolley will eventually wear away one side of the trolley.
This home depot guide will explain the cost to install garage doors and openers or replace existing ones so you can decide which options are best for your budget.
I did a complete video on the entire chamberlain carriage trolley mechanism if that is what you re looking for you can find that here.
Pull the release cord that connects the garage door to the trolley.
Take the pin and cotter pin out of the trolley pull.
Garage door installation and replacement costs may vary according to style and size.
When the springs can t handle the weight it puts the burden on the opener which then weighs down the trolley carriage.
This will disconnect the door from the motor.
Lots of other garage door openers starting with 189 but not my exact model.
Slide the new rack and the trolley on the end of the rail until the teeth on the rack engage the screw drive.
Simply raise the door with your automatic opener and it will automatically reconnect.
Next pull the emergency release toward the door.
I have a craftsman 1 2 hp garage door opener which recently had a part break on me.
The model on the unit is 139 18060 which i can t seem to locate on searspartsdirect website strangely enough.
Run the garage door opener in the up position until it is well onto the rail or until it stops at the up position.
To start pull the old trolley carriage off clamping the chain to the rail.
This also works for belt drives as many of them are the same in design.
The liftmaster 41b3869 1 garage door opener belt drive trolley sold by north shore commercial door replaces the whole opener and is easy to install.
