TB 9-5120-212-35
(4) Check cw and ccw balance of TI as follows:
(a) Set RATCHET PAWL (fig. 4) to nut-on position.
(b) Turn T-handle cw to obtain a 500 ft-lb indication on TI indicator. Record
indication of Force/torque indicator.
(c) Turn T-handle ccw to release applied torque.
(d) Press the F4 key on the force/torque indicator until you see the
soft
soft keys as necessary to select the torque cell for the TI range and
keys. Press the
direction being calibrated. Insure the serial number matches the torque cell being used.
(e) Press the F4 key on the force/torque indicator until you see the UNIT soft
key. Press the UNIT soft key as necessary to select ftlb.
(f) Press the SIGNAL
to select the GROSS mode of operation. Press the
F4 key on the TI indicator until you see the Acal soft key. Press the Acal soft key as
necessary to activate the Acal enunciator.
(g) Exercise TI and torque cell scale three times in ccw direction.
(h) Press the F4 key on the force/torque indicator until you see →0← as soft
key. Press the →0← soft key to zero force/torque indicator.
(i) Turn T-handle ccw to obtain a 500 ft-lb indication on TI indicator. Record
indication of force/torque indicator. If indication is not within 5 ft-lbs of indication recorded
in (b) above, perform b(1) through (3) below.
(5) Turn T-handle cw to release applied torque.
(6) Press the F4 key on the force/torque indicator until you see the
soft
soft keys as necessary to select the torque cell for the TI range and
keys. Press the
direction being calibrated. Insure the serial number matches the torque cell being used.
(7) Press the F4 key on the force/torque indicator until you see the UNIT soft key.
Press the UNIT soft key as necessary to select ftlb.
(8) Press the SIGNAL
to select the GROSS mode of operation. Press the F4
key on the TI indicator until you see the Acal soft key. Press the Acal soft key as
necessary to activate the Acal enunciator.
(9) Exercise TI and torque cell scale three times in cw direction.
(10) Press the F4 key on the force/torque indicator until you see →0← as soft key.
Press the →0← soft key to zero force/torque indicator.
(11) Set TI for cw operation.
(12) Turn T-handle cw to obtain a 500 ft-lb indication on TI indicator. If force/torque
indicator does not indicate between 485 and 515 ft-lbs (490 and 510 ft-lbs for Powerdyne,
Model PD1220B), perform b(4) through (10) below.
(13) Operate TI cw to obtain indications listed in table 5. If force/torque indicator
indications are not within limits specified, repeat (4) through (12) above.
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