How To Replace Garage Door Opener Trolley Rack

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.

How to replace garage door opener trolley rack. To start pull the old trolley carriage off clamping the chain to the rail. 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. When the springs can t handle the weight it puts the burden on the opener which then weighs down the trolley carriage. Pull the release cord that connects the garage door to the trolley.

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. Take the pin and cotter pin out of the trolley pull. Once the wear and tear is too bad the garage door won t open at all or will open but not easily. Run the garage door opener in the down direction until the trolley and rack come off the end of the rail.

Constant rubbing of the rail beam along the side of the trolley will eventually wear away one side of the trolley. Run the garage door opener in the up position until it is well onto the rail or until it stops at the up position. Garage door installation and replacement costs may vary according to style and size. Simply raise the door with your automatic opener and it will automatically reconnect.

Position a ladder underneath the trolley. Next pull the emergency release toward the door. If you take it down label the wires you take off. 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.

I have a craftsman 1 2 hp garage door opener which recently had a part break on me. Remove the cotter pin connecting the trolley with a pair of pliers. Close the door by hand so that the trolley is a the outer end of the rail. This is what connects the trolley to the draw bar.

The model on the unit is 139 18060 which i can t seem to locate on searspartsdirect website strangely enough. I think the part that broke is a sub component of the trolley. They help to carry and balance the weight of the garage door so your garage door lifts properly. Lots of other garage door openers starting with 189 but not my exact model.

A quick diy video on how to replace a trolley on a chain drive garage door opener.