Continental Refrigerator IO-240-A, Инструкция по установке и эксплуатации

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B-4 IO-240 Series Engine Installation & Operation Manual
31 October 2011
Torque Specifications
Figure B-3. Extension increases applied torque
Examples in Figure B-3 and Figure B-4 illustrate how extensions can alter the torque
applied to the fastener. Examples in Figure B-3 adds the length of the extension to the
torque wrench, increasing the leverage applied to the fastener. The position of the
extension in Figure B-4 reduces the effective length of the handle and the applied
leverage. The length of the extension (variable B) is subtracted from variable A 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, 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
Extension
Length = B
Torque Wrench Square Drive Distance = A
Fastener Torque Distance
Set Torque= x A
Fastener Torque
A + B
Extension
Length = B
Torque Wrench Square Drive Distance = A
Fastener Torque Distance
Set Torque= x A
Fastener Torque
A + B
Set Torque= x A
Fastener Torque
A + B
Extension
Length = B Torque Wrench Square Drive Distance = A
Fastener Torque Distance
Set Torque= x A
Fastener Torque
A + B
Extension
Length = B Torque Wrench Square Drive Distance = A
Fastener Torque Distance
Set Torque= x A
Fastener Torque
A + B
Set Torque= x A
Fastener Torque
A + B
Extension
Length = B
Torque Wrench
Square Drive Distance = A
Set Torque= x A
Fastener Torque
A - B
Extension
Length = B
Torque Wrench
Square Drive Distance = A
Set Torque= x A
Fastener Torque
A - B
Set Torque= x A
Fastener Torque
A - B