TM55-2840-251-23
Section X ENGINE TESTING (Continued )
1-94
GROUND TEST OF ENGINE
INSTALLED IN AIRCRAFT
(Cont)
8.
(Cont)
e.
Fuel Control Unit (FCU) and/or Fuel Pump
check. Check unit as follows:
(1)
If fuel control un- it or fuel pump have
been re- placed they must be depreserved as follows:
(a)
Remove lock- wire and disconnect
inlet tube (8) from fuel dump valve (9).
(b)
Advance power control lever.
(c)
Motor engine until clear fuel issues
from dump valve inlet port.
NOTE
Use
a
suitable
container
to
receive
preservation oil and fuel.
(d)
Move power control lever back to
CUTOFF.
(e)
Reconnect dump valve inlet tube (1),
torque to 65 to 75 inch-pounds and secure with Lockwire
(E.4).
(2) Carry out motoring run with fuel cut-off lever in
OPEN position to check for fuel system leaks.
(3) With fuel cut off carry out a motoring run to dry
out engine.
(4) Perform checks No. 1 thru 6 (subparagraphs 1-
94, 2 thru 7).
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