I was invited to the installation of a McKinney Continuous Geared Door Hinge onto a narrow stile aluminum glass door and aluminum frame. This door was an exterior rear entry into one part of a modular office building. According to the locksmiths, personnel were having problems opening and closing...
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Step 3. Remove the door, threshold and pivots from the frame.
Step 4. Remove any debris and seal the sub-floor.
Step 5. Place the frame leaf of the continuous hinge onto the hinge side of the frame. The frame leaf is 1-1/4” wide.
Step 6. Locate the continuous hinge at the proper height for the frame. Check to be sure the hinge leaf aligns along the vertical edge of the frame. A 1/4” gap between the frame leaf and the door leaf compensates for the unique characteristics of each opening. Note: McKinney recommends leaving at least 1/8” clearance between the top of the hinge and the header.
Step 7. Mark the locations for the mounting screws. The frame leaf screws are #12-24 x 7/16” self drillers. The locksmiths preferred to drill a pilot hole to ensure proper placement. For this installation, a #13 bit was used.
Step 8. With the frame leaf in place, drill the pilot holes and install the mounting screws. Install one screw at the top, one screw in the middle and one at the bottom. Then install the remaining frame leaf screws. Swing open the door leaf.
Step 9. Place the door into the opening and use shims to properly position the door. Note: McKinney recommends leaving at least 1/8” clearance between the sides and top of the door and the frame.
Step 10. Mark the locations for the mounting screws. The door leaf uses two types of screws: 3/4” x 12 self-drillers and 1/4” - 20 shoulder screws with sex nuts.
Step 11. With the door leaf in place, mark the locations for the four 3/4” self-driller screws. Drill a #13 pilot hole for each screw and install the screws using a Phillips head screwdriver.
Step 12. Remove the shims and operate the door. If the door swings smoothly, continue with Step 13. If not, make the necessary adjustment so the door operates properly.
Step 13. Mark the location for the shoulder screws and sex nuts. Drill a 1/4” diameter opening though the door.
Step 14. Open the door and enlarge the inside holes to approximately 3/8” diameter using a step drill. The larger opening is necessary to accommodate the body of the sex nut.
Step 15. Use a hammer and wood block to seat the sex bolts.
Step 16. Secure the sex bolts to the continuous hinge using the 1/4”-20 shoulder screws. Do not over tighten. Test the operation of the door. If you have difficult starting the 1/4”-20 screw, use a nail to align the sex nut.
Step 17. Re-install the shoe onto the door.
Step 18. Install the cover cap. The cover cap hides the screws from being exposed and resists tampering. The cover cap is installed using a rubber mallet or a hammer and a wood block.
Step 19. Once the cover cap is installed, use the supplied hex wrench to tighten the setscrew in order to secure the cap from being slid off.
Step 20. Adjust the exit device to release and latch properly. Test operation.
The McKinney heavy duty, full surface continuous geared door hinges are equipped with concealed thrust type bearings designed to carry a vertical load of up to 540 pounds This continuous hinge comes with a “life of the opening” guarantee.
The next time you’re called to fix a lock, take a look at the hinge. If you’re unfamiliar with installing geared continuous hinges, you’re missing a profitable opportunity
For those of us who’ve hung thousands of doors the old-fashioned way, having the flexibility to adjust clearances after the door is hung makes it easier to get it right the first time.