TM55-2840-251-23
Section X ENGINE TESTING (Continued)
1-95 GROUND TESTING OF ENGINE ON MOBILE
TRAILER ASSEMBLY (AVIM) (Cont)
4.b. (Cont)
(1) Loosen screw (1) securing part power trim
stop (2) to gas generator maximum speed stop anvil.
(2) Position part power trim stop so that it is
inter- posed between power lever anvil and maximum gas
generator speed stop (3).
(3) Tighten screw.
c. Part Power Trim Check.
(1) Engine is trimmed by adjusting gas generator
maxi- mum speed stop to part power trim check curve
(refer to Part Power Trim Curve opposite). These curves
allow setting of maximum Ng at reduced power and at all
off-standard atmospheric conditions.
CAUTION
Observed gas generator speed should not exceed
97.1% Ng (36400 rpm) during part power trim check
and subsequent gas generator maximum speed adjust-
ments. Interturbine temperatures should not exceed
the value shown by maximum uptrim line on part
power trim check curve.
(2) To determine expected power output for an
engine under static conditions, proceed as follows:
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