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.

How to replace garage door opener trolley rack.

Next pull the emergency release toward the door. 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. They help to carry and balance the weight of the garage door so your garage door lifts properly.

Pull the release cord that connects the garage door to the trolley. Remove the cotter pin connecting the trolley with a pair of pliers. Garage door installation and replacement costs may vary according to style and size. To start pull the old trolley carriage off clamping the chain to the rail.

Run the garage door opener in the down direction until the trolley and rack come off the end of the rail. I think the part that broke is a sub component of the trolley. 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. This will disconnect the door from the motor.

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. The model on the unit is 139 18060 which i can t seem to locate on searspartsdirect website strangely enough. This also works for belt drives as many of them are the same in design.

This is what connects the trolley to the draw bar. Take the pin and cotter pin out of the trolley pull. A quick diy video on how to replace a trolley on a chain drive garage door opener. Simply raise the door with your automatic opener and it will automatically reconnect.

When the springs can t handle the weight it puts the burden on the opener which then weighs down the trolley carriage. Run the garage door opener in the up position until it is well onto the rail or until it stops at the up position. Position a ladder underneath the trolley. Close the door by hand so that the trolley is a the outer end of the rail.

If you take it down label the wires you take off.