TB 9-5120-202-24
NOTE
Use the appropriate note for the TI being calibrated. Using the
SIGNAL select the GROSS mode of operation. If the TI
is the audible (snap) type then use the SIGNAL to select
the 1stPeakHold mode.
(5) Insert TI in applicable torque cell, using adapter as required. Insert in
horizontal position for clockwise torque.
(6) Perform applicable note below for the TI being calibrated.
NOTE
Torque Wrench, Direct Reading: (figs. 1, 3, and 5).
Gradually apply perpendicular force on handle of TI until
indication in (1) above is obtained.
NOTE
Torque Wrench, Direct Reading with Audible Signal:
(figs. 2, 4, and 6). Adjust trigger finger of sensory signaling
mechanism on TI to point selected in (1) above. The pointer tip
and not the trigger finger is the reference which must be used
when adjusting the sensory signaling mechanisms. Gradually
apply perpendicular force on handle of TI until sharp audible
sound is heard and an impulse is felt in hand. Stop applying
force at this point.
NOTE
Torque Wrench, Direct Reading with Flashlight Signal:
(fig. 7). Check standard dry-cell battery for possible current
failure in flashlight attachment.
Gradually apply
perpendicular force on handle of TI until needle on indicator
dial reaches preset pin, making contact and lighting bulb. Stop
applying force at this point.
NOTE
Torque Wrench, Audible Signal, Micrometer Preset:
(figs. 8 and 9). These two classes of torque wrenches differ only
in that one contains a ratchet mechanism enclosed in the drive
head. The ratchet is a reversible mechanism and operates by
manual movement of a lever. Gradually apply perpendicular
force on handle of TI until audible signal (snap) is heard. Stop
applying force at this point.
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