FIGURE 20-2 SHORTENING TORQUE WRENCH EFFECTIVE LENGTH
FIGURE 20-1 LENGTHENING TORQUE WRENCH EFFECTIVE LENGTH
Given Symbols
Y = Unknown Y = Torque wrench setting
T = 135 in.-lb T = Torque applied to fastener
L = 10 in. L = Length of torque wrench
A = 1.5 in. A = Length of adapter
When using an adapter that lengthens torque wrench effective length,
calculate torque wrench setting using the formula below:
EXAMPLE
Solve for Y =
T x L
=
135 x 10
=
1350
= 117.39
L + A 10 + 1.5 11.5
Set torque wrench to 117 in.-lb to torque fastener to 135 in.-lb.
Given Symbols
Y = Unknown Y = Torque wrench setting
T = 135 in.-lb T = Torque applied to fastener
L = 10 in. L = Length of torque wrench
A = 1.5 in. A = Length of adapter
When using an adapter that shortens the torque wrench effective length,
calculate torque wrench setting using the formula below:
EXAMPLE
Solve for Y =
T x L
=
135 x 10
=
1350
= 158.82
L – A 10 – 1.5 8.5
Set torque wrench to 159 in.-lb to torque fastener to 135 in.-lb.
Page 20.4 Chapter 20 Standard Practices R66 Maintenance Manual 25 OCT 2010
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