removing difficult screws

Occasionally there is a screw that is difficult to unscrew. Recently I had a need to remove the half forks on my Glasair. The AN structural screws were connected ...
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REMOVING DIFFICULT SCREWS

By DONALD B. WALL EAA 218017 5471 Lake Howell Rd.

Winter Park, FL 32792 Occasionally there is a screw that is difficult to unscrew. Recently I had a need to remove the half forks on my Glasair. The AN structural screws were connected by using hidden nuts in the forks. Access to the nut was not practical. Hence, how could I remove this highly 86 JULY 1992

torqued screw without removing the strut from the aircraft? I needed a way to develop a large torque on a recessed screw head without damaging the screw. I chose to combine a three inch clamp with a short Phillips head screwdriver tip as shown in the attached photograph. Please note that either a box or open end wrench will work to rotate the screwdriver tip. The clamp is tightened snug over the screwdriver tip, the screw

and nut, and drawn up tight. The screwdriver tip should be rotated with the wrench as required. In the example shown, the wrench is rotated the same direction as the C-clamp threads. Of course, adjustments must be made if the C-clamp thread is different than the screw tread which you are trying to remove. The main idea is to keep the C-clamp snug. These otherwise difficult to remove screws were easy to remove using this technique.