Repairing 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.

Repairing chain drive garage door opener.

Too little tension could cause the chain to skip off the sprocket and fall down on your car. Of slack from the rail to the chain check your manual. A chain drive garage door usually has two small switches on the top of the unit these are triggered when small rollers attached to the chain ride into the mechanism. In most types of carriage assemblies for door chain openers the adjustment bolt is located inside the carriage assembly.

This video from sears partsdirect shows how to replace the chain and cable assembly on a chain drive garage door opener. Press the wall control button or remote so that the opener completes its close. If you re too far away this can cause a problem with opening or closing the door. You may also need to reprogram your keypad or replace the batteries in it.

How to put a chain back on an automatic garage door opener. The adjustment bolt is held in place by nuts located on the sides of the assembly. Replace the chain and cable assembly with the manufacturer approved replacement part. Your chain drive garage door opener is tasked with operating the largest moving part in your entire home with this type of responsibility you want to make sure that the opener will work consistently without any problems.

Most chain drive openers suggest you tighten the chain so there s about 1 4 in. If the chain and cable assembly breaks the door won t move. If your opener seems to overrun the switch and just keeps trying to pull the garage door up or down after it reaches the end of travel you might assume that it missed the. Firstly check that you re using it within the range required for your opener.

Over tightening the chain will put excess wear and tear on the shaft and gears. This diy repair guide explains how to replace the chain and cable assembly on a chain drive garage door opener. Also verify the antenna on the motor unit is in the proper placement. You need to loosen the bolts located near the motor and squeeze the nut located on the opposite end to tighten the chain.

Disengage the garage door from the opener by pulling down on the emergency pull cord to release the door trolley from the opener carriage. Over time the sprocket s teeth can wear and the chain may jump or skip when the opener raises the door.