Chamberlain Belt Drive Garage Door Opener Assemble and Install – Easy to Understand DIY Video Tutorial

How to Assemble and Install a Chamberlain Belt Drive Garage Door Opener

How do you install a Chamberlain belt drive opener?

This video demonstrates how to assemble and install a Chamberlain belt drive garage door opener in a garage with a sectional door and a finished ceiling. These steps apply to all recent models of Chamberlain belt drive garage door openers so your product may appear different than what is in the video.

Download myQ APP (What is myQ? Learn More)

Before we do anything else, head over to the App Store or Google Play and get the latest myQ App installed. When you search for myQ several apps will appear. Chose the app with the myQ Garage and Access Control. Install that one and follow the directions to sign up for an account, or sign in if you already have one. You’ll be able to use the myQ app to close the door without being in the line of sight of the door. This unattended close feature is only to be used with sectional garage doors.

Here’s what we’re going to cover:

  • Things you’ll need to check before you get started.
  • Assembling the opener.
  • Installing the opener.
  • Completing the electrical and wiring connections.
  • Making the necessary adjustments, including testing the safety reversal system.

Before you begin, completely uninstall and remove your old garage door opener, if there is one. Also, disable any locks and remove ropes that are connected to the garage door.

Measure the height of your garage door.

All Chamberlain garage door openers are provided with a rail designed for a SEVEN-foot tall garage door. If your door is taller than seven feet, and up to ten feet tall, you will need a rail extension kit. Your garage should also have horizontal and vertical reinforcements already installed. These provide support and help prevent damage to the door.

Pre-installation checklist.

Check the balance of the garage door. Start with your garage door in the closed position. Lift the door three to four feet off the ground. Release the door. If balanced, it should stay in place, supported entirely by Its springs. Raise and lower the door to check for sticking or binding. If your door binds, sticks, or is out of balance, contact a trained door systems technician before you install this opener. Never try to loosen, move or adjust garage door, springs, cables, pulleys, brackets, or hardware, all of which are under EXTREME tension. Be sure to close the door when finished with these checks.

Unbox and assemble Chamberlain Belt Drive Opener.

Unbox the Chamberlain Belt Drive garage door opener and layout the parts. It’s good to rest the motor on protective cardboard so it doesn’t get scratched.

Here’s what comes in the box:

  • The trolley assembly
  • The belt
  • The header bracket and door mounting bracket
  • The safety reversing sensors with mounting brackets
  • The control (wall console)
  • Remote controls
  • And the other parts including hardware

Refer to your manual for a list of tools and additional items you may need. The support bracket for mounting the motor unit to the ceiling is not provided. You’ll also need to supply light bulbs.

Place the Chamberlain belt drive garage door opener on protective packing material, about ten feet away from the garage door.

To assemble the rail, carefully remove the door arm and hanging bracket parts. Layout the rail sections on the floor with the tapered ends pointing toward the garage door. The front rail section, with the window, goes on the door end of the rail. make sure the cutout rail tab is on the top. Slide the tapered ends of the rails into the larger ends.

Placing the rail on top of the packing material and the motor unit will help with assembly. At the motor unit end of the rail, insert a screwdriver through the hole in the second rail section.

Make sure the inner trolley is inside the out trolley. Make sure the release lever is pointed toward the motor unit and slide the trolley assembly onto the rail, over to the screwdriver.

Install the cover protection bolt in the rail onto the rail, and over to the screwdriver. Install the cover protection bolt in the rail section closest to the motor unit, making sure not to overtighten.

Insert the U-Bracket with the flat side down. Push firmly until it reaches the stop. If you need a little help, place a piece of old two-by-four against a solid surface and brace the rail against it and then tap the rail with a mallet. Remove the bolts from the top of the motor unit and use them to attach the u-bracket to the rail. Hand tightens the bolts, do not use power tools.

Remove the tape from the idler pulley and make sure there is grease in the center hole. On the rail closest to the Chamberlain belt drive garage door feed the belt through the window.

Insert the idler pulley, and make sure the ribbed side of the belt is in contact with the pulley. Secure the pulley in place with the provided hardware.

Use a flat head screwdriver to lift the cutout rail tab to a 90-degree angle. Hook the belt onto the trolley. Pull the other end of the belt until the trolley rests against the screwdriver. Extend the belt and wrap it around the sprocket on the motor unit. Make sure the belt is not twisted and the ribbed side is in contact with the sprocket.

Remove the spring trolley nut from the threaded shaft. Slide the threaded shaft through the hole of the trolley. Attach the spring trolley nut to the threaded shaft with only a couple of turns. The threaded shaft needs to reach the belt. Connect the belt to the threaded shaft using the master link hardware. If there’s any slack in the belt, the finger tightens the spring trolley nut. Do not use any tools. Remove the screwdriver from the rail. To set the spring, insert a flat-head screwdriver against the nut ring slot and turn the nut with a wrench until the spring releases and snaps the nut ring against the trolley.

Complete the assembly by installing the sprocket cover.

Your garage door is ready to install. Do not proceed with installation until you have thoroughly read all of the instructions and safety information in your installation instructions. This demonstration only provides an overview of an installation in a garage with a sectional door.

Installing Header Bracket

The header bracket will be centered over the garage door and fastened to structural support. Do not attach the header bracket over drywall. If there is a header bracket already there installed, use it if possible.

Raise the garage door to the highest point of travel and make a mark 2 inches above this. Using a level is helpful.

With the door closed, place the bottom of the header bracket on your mark and make marks for pilot holes. Be sure to refer to the installation instructions for the correct drill bit size. Install the header bracket using the provided hardware.

This garage already has support brackets installed. If a properly installed support bracket is not already in place, you must supply one along with the hardware for fastening It to the structural supports in the ceiling.

Install Assembled Chamberlain Belt Drive Opener.

It’s time to place the assembled Chamberlain Belt Drive door opener into position. It’s easiest if you have a helper to assist.

Position the Chamberlain Belt Drive opener so the end of the rail reaches the header bracket. If the door spring is in the way, raise the motor unit onto a temporary support and have a helper hold it securely in place. Connect the rail to the header bracket using the clevis pin and secure it in place with a ring.

Open the garage door and place a 2×4 under the rail. This will put the motor unit at the proper height for connecting to the support bracket.

Put on protective gloves when handling the hanging brackets. Measure the distance from the support bracket to the garage door opener. Measure and cut the hanging bracket. Connect the hanging bracket to the garage door opener and the support bracket. Remove the 2×4 and lower the garage door.

Thread the emergency release rope through the handle and tie it off. Then install the emergency release rope to the trolley, making sure the handle is at least 6 feet off the ground.

If your garage door is made of lightweight material such as fiberglass, aluminum, or light steel, make sure both horizontal and vertical reinforcements are installed before attaching the door bracket. the door bracket will be centered under the header bracket. It attaches to the vertical reinforcement on the top panel using the provided hardware.

The outer trolley needs to be close to the garage door so you can install the arm. If you need to move it, disconnect the trolley by pulling down on the emergency release handle and slide the trolley over to the door. The door arm consists of a curved section and a straight section. Use the provided clevis pins to connect the straight door arm to the trolley and the curved door arm to the door bracket. Align the curved and straight arms so they appear to be positioned between 1 and 2 o’clock. Use the provided hardware to connect the two parts.

Installing The Chamberlain Belt Drive Wall Console

Next, install the Chamberlain Belt Drive door control following the directions in your installation instructions. Install the door control within sight of the door at a minimum height of 5 feet above floors, landings, steps, or any other adjacent walking surface where small children cannot reach, and away from the moving parts of the door.

Wiring The Chamberlain Belt Drive Opener Wall Console

Wire The Chamberlain Belt Drive wall control the motor unit by inserting the white wire in the white connector and the red wire in the red connector.

Safety Reversing Sensors

Your Chamberlain Belt Drive opener comes equipped with safety reversing sensors (safety beams) which are to be mounted on each side of the garage door at floor level. Safety reversing sensors are to be installed no more than 6 inches from the floor.

Snap the sensor bracket onto the door track, then mount the safety sensor using the provided wing nut and bolt. If your garage is not pre-wired for safety sensors follow the instructions for routing the wires that are attached to the sensors.

Since the garage already has wiring in place, we’ll follow the directions for connecting the safety sensors to the existing wiring. Now, follow the directions for wiring the safety reversing sensors to the motor unit.

Insert the white wire in the white connector and the black wire in the grey connector. Plug the garage door opener into the electrical outlet but do not run the opener.

Now check the safety sensors. The sending sensor amber LED should be solid. If the sending sensor is off make sure of the following:

  • The Chamberlain garage door opener has power
  • The wire from the sensor is not broken or shorted
  • The wires are wired to the correct terminals on the opener

If the receiving green LED sensor is flickering or off, loosen the wing nut and adjust the sensor position until the LED glows solid.

Programming Travel Limits

Re-engage the trolley by pulling back on the emergency release rope. Lift the door until the trolley clicks into place.

Programming travel limits tell the opener where to stop when moving the door up or down. There are 3 buttons the down button and the up button.

The adjustment button press and hold the adjustment button until the up button begins to flash. Now, press and hold the up button until the door is in the desired up or open position. To prevent damage to vehicles, be sure the fully open door is in the fully open position, press and release the adjustment button.

The garage door lights will flash twice and the down button will start flashing. Now, press and hold the down button until the door is in the desired position. Once the door reaches the correct closed position press and releases the adjustment button. The garage door opener lights will flash twice and the up button will begin to flash.

Now, press and release the up bottom. When the door travels to the open position, the down button will begin to flash. Press and release the down button. The door will travel to the closed position.

Programing the travel for your garage opener is now complete.

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