TM55-2840-251-23
Section X ENGINE TESTING (Continued)
1-95
GROUND TESTING OF ENGINE ON MOBILE
TRAILER ASSEMBLY (AVIM) (Cont)
4.c.(2) (Cont)
(a) Obtain ambient air temperature.
(b) Obtain field barometric pressure (not
corrected to sea level).
(c) To determine target torque enter part
power trim check curve with ambient temperature and
proceed vertically upward to intersect field barometric
pressure line. From this intersection proceed horizontally to
the left and read target torquemeter pressure. Record
value obtained.
(d) To obtain maximum ITT at which
target torque can be achieved enter curve with ambient
temperature and proceed vertically upward to intersect
max overtrim line. From this intersection, proceed
horizontally to right to read interturbine temperature.
Record value obtained.
(e) Carry out prestart check (subparagraph
2).
GO TO NEXT PAGE
1-171
