TM 55-4920-432-13&P
2-6
OPERATING PROCEDURES (CONT.)
2-6
j.
Close ",Control," needle valve and open ,"Bleed" valve slowly to return to zero deflection.
k.
For true readings use needle valves to get applicable instrument readings corresponding to those
on calibration cards. Refer to table 2-3, for test data pertaining to aircraft instruments which can be
checked using this Tester.
l.
After test open applicable "Bleed" needle valve until all instruments read zero.
TABLE 2-3
INSTRUMENT CALIBRATION CARDS
2-8
