Key stock should be used when connecting couplers and cable drums to the shaft.
Garage door motor coupler.
If you pressed the open button but the garage door didn t move your motor side of the coupler is in the up position while your door track side is in the down position.
This means that when you connect them and press the opener button the motor will try to lower the door which is already down and you may break your new coupler.
Pull the coupler off the motor shaft and insert the new one in its place.
Garage door shafts couplers we sell solid and hollow shafts as well as couplers for torsion spring systems.
A garage door that operates as it should lasts longer and gives you better service than one that is neglected squeaky and beat up.
The solid shaft pictured to the right of the hollow shaft comes in 1 and 1 1 4 diameters and is equipped with a fully keyed slot.
Use this lubricant for all the moving parts on your door.
Make sure door is in down position and to release the lock on it.
The lock release will have a cord with a t handle at one end next disconnect power supply undo the bolts holding the motor to the hanger frame.