TB 9-5120-212-24
NOTE
Perform (4) below for ccw calibration only when specifically
requested by user.
(4) Perform paragraph 19 above and select the torque cell for the TI range and
cw torque.
(5) Repeat a (1) through (3) above, except turn crank handle ccw.
(6) Turn TI crank handle cw to obtain a 0 indication.
b. Adjustments
(1) Set the force/torque indicator to measure ccw torque.
(2) Exercise TI as follows:
(a) Set anti-wind-up knob on TI to CCW. Turn pull handle ccw to obtain an
approximate full-scale indication on TI.
NOTE
In order to set the anti-wind-up knob from CCW to CW a small
amount of ccw force will need to be applied.
(b) Set anti-wind-up knob on TI to CW. Slowly release pull handle cw to obtain a 0
indication on TI.
(c) Repeat (a) and (b) above two times.
(3) Ensure no torque is currently applied to TI.
(4) Press and hold the PRINT pad and press the ZERO pad.
(5) The TI display will prompt "ZERO LOAD CCW", press the ZERO pad again.
NOTE
When applying 7000 ft-lbs in both cw and ccw directions the
load must be held steady for a few seconds after RESET pad is
pressed so assistance will be needed.
(6) The TI display will prompt "FULL LOAD CCW", turn pull handle ccw to obtain
a reading of 7000 ft-lbs on the force/torque indicator.
(7) After the load has stabilized press the RESET pad.
(8) The TI display will prompt "ZERO LOAD CW", remove load then press the
ZERO pad.
(9) Set the force/torque indicator to measure cw torque.
(10) Exercise TI as follows:
(a) Set anti-wind-up knob on TI to CW.
Turn pull handle cw to obtain a
reading of 7000 ft-lbs on the force/torque indicator.
19