TM 11-5985-371-12&P
SECTION VI ORGANIZATIONAL MAINTENANCE PROCEDURES
4-13. General. This section covers the removal and replacement of components which --
you determined to be faulty during troubleshooting (table 4-2) or which you observed
to be damaged during performance of PMCS (table 4-1).
WARNING
If the antenna is connected to a transmitter, make certain the
radio operator has disconnected the antenna rf cable from the
transmitter before entering the roped-off radiation hazardous area
to replace the terminating resistor box.
a . Removal.
(1) After making certain the radio operator has disconnected the antenna rf
cable from the radio, disconnect the antenna wires
from the top of the balun
(2) Unsnap the end loops of the antenna wire from the four lanyards that con-
nect to the antenna stakes, and remove the four conductor splices (para 4-16).
(3) Untie the halyard
from the cleat
on the balun
and lower the
terminating resistor box
to the base of the mast
.
(4) Disengage the slide hook
from the eyelet on the halyard
.
(5) Disconnect the antenna wires
from the antenna connectors
on each
side of the terminating resistor box, by removing the conductor splice
from each
antenna wire and pulling the antenna wires through the terminating resistor box con-
nectors
.
b. Repair.
(1) Remove the 20 screws
that hold the front plate
to the terminating
. Using the multimeter measure the resistance of each power
resistor box
. The correct reading is 200 ohms.
resistor
(2) If defective, pull out the defective resistor(s)
; replace with a known
good resistor(s).
(3) Check the resistance between the outer connectors
. The correct
reading is 600 ohms.
(4) Replace the front plate
with the 20 screws
.
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