Major Manufacturing's Pit Bull Steel Door Tool Simplifies Hardware Changes

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One of the more difficult modifications is recessing a latch pocket into a hollow metal door edge to accommodate an auxiliary lock. Major Manufacturing's Pit Bull tool makes this task much simpler.


Most hollow metal doors are factory constructed to accommodate a specific building's hardware requirements. Retrofitting or adding lock hardware can be a time-consuming job. Unlike a wood door, a hollow metal door cannot be easily modified. One of the more difficult modifications is recessing...


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Step 8. To prevent the hollow metal door from distorting, Major Manufacturing includes two steel bars to be clamped into placed onto each face of the door. Use two “C” clamps to secure the two steel bars against each face of the door where the pocket will be formed.

Step 9. Use a 1-1/8” box end wrench to slowly tighten the draw bolt. The forming die will create the pocket in the door edge as it bottoms out against the drawing die. Stop tightening the draw bolt when the forming die bottoms out.

Step 10. Use the supplied hex wrench to tighten the two setscrews in the forming die. The points of the setscrews will locate the position for drilling and tapping the two latch mounting holes.

Step 11. Remove the “Pit Bull” fixture and install the deadbolt according to manufacturer's instructions.

Forming a “Pit Bull” a latch face pocket into a metal door edge helps to ensure that the door and lock will operate properly, while providing the end user with the appearance that the job was properly completed.

For more information, contact your local wholesaler or Major Manufacturing, 1825 Via Burton, Anaheim , CA 92806 . Telephone: 714-772-5202. Fax: 714-772-2302. Web Site: www.majormfg.com.

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