Adjust the height of the door.
Step 1. Remove the arm cap screw from the bottom pivot.
Step 2. Remove the arm cap from the pivot.
Step 3. Loosen the arm locking screw. Loosening the arm lock screw of a Rixson 147 bottom pivot requires a 5/16” hex wrench.
Loosening this screw permits the arm knuckle to be raised by adding “C” shims or lowered by removing shims.
Step 4. To raise or lower the door, use a three- or four-foot crowbar to carefully lift the door. This increases the gap between the arm knuckle and the pivot stud.
To raise the door, slide one or more “C” shims onto the pivot stud between the lip and the knuckle. Check the clearance between the door and the threshold and the door and the header, then, if the height is correct, tighten the arm locking screw.
To lower the door, remove one or more “C” shims from the pivot stud. Once the height is correct, tighten the arm locking screw.
Future articles will continue the discussion of pivots, including lowering the door, and servicing and maintaining pivots in regards to concealed overhead closers and floor closers.
I was invited to the retrofitting of the lock hardware on a pair of wide stile aluminum doors equipped with rim exit devices latching onto a mullion.
Floor closer conversion & surface mounted door closer is installed.