PROPER SUPPRESSION. Essentially, sup-
unit and battery charger.
pression is attained by providing a
(4) Filter unit installed on gen-
The methods used in-
clude shielding the ignition and high-
(5) Welded one-piece frame and
with bonding straps, and using filtering
housing assembly with latching access
(6) Ground stud on frame to ground
via ground strap.
a. Primary Suppression Components.
The primary suppression components are
those whose primary function is to sup-
b. Secondary Suppression Compo-
These components have radio
interference suppression functions which
are incidental or secondary to their
They are the lock-
washers used on the fuel pump, elec-
unit, and battery charger.
MAINTENANCE OF FRAME AND HOUSING
flapper (11) is attached to the roof,
which is opened by exhaust gas from the
a. Frame and Housinq Components.
exhaust ejector when the engine is
1-6) consists of a frame (one-piece
welded), panels (welded to frame), lift-
c. Covers. Covers
ing eyes, covers, access doors, battery
holddown, exhaust ejector assembly, air
cleaner assembly, ground stud, and drain
d. Access Doors. There are seven
access doors plus an exhaust flapper,
Construction. The frame
is constructed of steel channel pieces
(1) Control panel access door
(rear of AGPU).
welded together to form a unitized, one-
piece assembly. Steel panels are welded
to the frame assembly to form the hous-
(2) Electrical trays access door
(right upper rear of AGPU).
are attached to the frame assembly. A
roof assembly (2) is attached to the
(3) Battery access door (right
lower rear of AGPU).
housing by four latches (1). An exhaust