How To Install Door Closer Arm. Fix the main arm and the extendable arm, then push the main arm to tie it up with the extendable arm, leaving this one at 90 degrees. Attach the arm door jamb mount to the end of the upper arm with the mounting pin in your kit.
Fix the main arm and the extendable arm, then push the main arm to tie it up with the extendable arm, leaving this one at 90 degrees. Start with the door closed. Mounting screws to install the closer body to the door and the parallel arm bracket to the frame soffit.
Actual costs will depend on job size, conditions, and options.
It is a lot easier to replace a door closer than it. Adjust the tension screw on the pneumatic cylinder to regulate the closing speed. Watch this video to find out more. When the door is closed, the arm’s position is parallel with the top of the frame, which is the reason it is called a “parallel” arm closer.