TM55-2840-251-23
Section X ENGINE TESTING (Continued)
1-95
GROUND TESTING OF ENGINE ON MOBILE
TRAILER ASSEMBLY (AVIM) (Cont)
7.
Test After Component Repair/ Replacement.
a. General. The following adjustment should
be carried out after repair or replacement of each major
component. The adjustments required during engine
trim and/or engine performance checks and setting up
of the reversing system are also given.
b. Power Turbine Governor Check. If the
power turbine governor has been replaced or its
operation is suspect, proceed as follows:
WARNING
Adjustment screws (6) and (7) are the only
screws permitted to be adjusted.
(1) Maximum Governing Speed: As on
most aircraft installations, either the propeller fine pitch
setting restricts the propeller speed (Np) at static
conditions or the travel of the maximum governor
speed stop is limited, making it impossible to check the
overspeed setting. However, if the governor maximum
setting is suspected of limiting engine power, it may be
checked as follows:
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