TM 5-6350-264-14&P-2
NAVELEX EE181-AA-OMI-030/E121 RT1161 M9443
T.O. 31S9-2FSS9-1-2
Table 5-1. Troubleshooting Procedures - Continued
Trouble
Probable cause
Corrective action
4. (cont)
c. (cont)
press against the screened end
of the transducer, and press it
out of the mount. Remove and
keep the plastic washer. Dis-
connect leads from rear of the
transducer.
(2)
To install a transducer, match dot
color on transducer with dot
color on mount - blue for re-
ceive and white for transmit.
Put top side of mount against
a flat surface, and align trans-
ducer with underside of mount.
Use heel of hand to press trans-
ducer into mount until shoulder
around bottom of transducer is
flush against bottom of mount.
Use a 7/8-inch (2.2-cm) rod,
such as a wooden dowel, to
press plastic washer down in-
side mount until it is flat
against screened end of trans-
ducer. To match leads to the
transducers, note that the trans-
mit transducer (white dot) re-
quires 8-inch (20.5-cm) leads
and the receive transducer
(blue dot) requires 3 1/2-inch
(8.9-cm) leads. Ensure that
transducer leads have approxi-
mately one twist per inch (2.5
cm). Connect leads to rear of
transducer. Place transducer
mount inside chassis and insert
screws through rear of the chassis
and into mount. Insert screws
through sides of chassis and into
transducer mount. Tighten the
screws to secure the mount in
the chassis. Swing chassis
against mounting surface, secure
with mounting hardware, and
replace conduit clamps. Shift
PC board off center toward re-
ceive transducer (blue dot).
Align single screw hole in board
with screw hole in center of
receive transducer mount.
5-26
