Section VII. RADIO INTERFERENCE SUPPRESSION
(1) Remove capscrew (fig. 3-33) and IET
3-48. General Methods Used to Attain Proper
washer that secures ground strap to engine.
Suppression
(2) Remove capscrew and IET washer that
Essentially, suppression is attained by providing a low
secures ground strap to generator, and remove ground
resistance path to ground for the stray currents. The
strap.
methods used include shielding the ignition and high-
(3) Place new ground strap in position and
secure to engine with IET washer and capscrew.
straps, and using capacitors and resistors.
(4) Connect ground strap to generator and
secure with IET washer and capscrew.
3-49. Interference Suppression Components
c.
Voltage Regulator.
a.
Primary Suppression Components.
The
(1) Remove four nuts and screws (fig. 3-33)
primary suppression components are those whose
that secure regulator and two mounts, and remove
primary function is to suppress radio interference.
regulator.
These components are described and located in figure
(2) Place new regulator in position with two
mounts and secure with four screws and nuts.
b.
Secondary Suppression Components. The
secondary suppression have radio interference
3-51. Testing of Radio Interference Suppression
suppression functions which are incidental or secondary
Components
to their primary function.
Test any capacitors for leaks and shorts on a capacitor
3-50. Replacement of Suppression Components
tester; replace defective capacitors. If test equipment is
not available and interference is indicated, isolate the
a.
General.
Replacement of suppression
cause of interference by the trial and error method of
components requires positive metal-to-metal contact
replacing each capacitor in turn until the cause of
with washers and ground straps. Replace as follows:
interference is located and eliminated.
b.
Generator Ground Strap.
3-45
