Teledyne Continental Motors, Inc.
TM
Torque
Specifications
IOF-550 Permold Series Engine Maintenance Manual
B-5
1 April 2007
Figure B-3.
Extension increases applied torque
Examples in Figure B-3 and Figure B-4 indicate the torque at the fastener may be
increased or decreased by an extension. The two examples in Figure B-3 increase the
force applied to the fastener but the position of the extension in Figure B-4 reduces the
effective length of the handle. The formula is the same but variable B is a negative
number in Figure B-4.
Let’s assume the torque wrench has an effective length of 12 inches and the extension
measures six inches from the center of the drive adapter to the center of the wrench. If we
need to torque a nut and bolt to 45 inch-pounds, we set the dial on the wrench in Figure
B-3 to 30 (45
÷
(12+6) x 12). The same torque wrench dial, used with the extension in
Figure B-4 must be set to 90 (45
÷
(12-6) x 12) to apply 45 inch pounds of torque to the
same nut and bolt.
Figure B-4.
Extension decreases applied torque