TM 11-5820-890-30-4
3-34. REPLACEMENT
Tools:
OF RELAYS.
3/16-inch nutdriver
Cross tip screwdriver, #0 point
Soldering kit
Adjustable wrench
Expendable supplies:
Alcohol
Cotton swabs
Solder
References:
Paragraph 3-26 for removal and installation of test adapter from maintenance group lid.
Figure 3-12 for illustration of relays.
ITEM
ACTION
REMARKS
REMOVAL
a. Wires
b. Two screws (71), flat
washers (69), and
hex nuts (68)
c. Relay (70)
INSTALLATION
d. Relay (70)
e. Two screws (71), flat
washers (69), and
hex nuts (68)
f. Wires
Note positions of all wires soldered to
relay K1, K2, or K3 (70). Use soldering
kit. Desolder all wires and, using adjust-
able wrench, disconnect RF cables from
relay. See figure 3-12 (sheet 2, detail C).
Use #0 point cross tip screwdriver and
3/16-inch nutdriver. Remove and retain
two screws, flat washers, and hex nuts
securing relay (70) to mounting bracket
(72). See figure 3-12 (sheet 3, detail C).
Remove and discard relay from mounting
bracket.
Install replacement relay in correct posi-
tion on mounting bracket (72) with two
retained screws (71) inserted through
holes in mounting bracket and relay case.
Use #0 point cross tip screwdriver and
These were removed in
3/16-inch nutdriver. Install and tighten
step b.
two retained hex nuts and flat washers
on two screws securing relay (70) to
mounting bracket (72).
Use soldering kit. Solder all wires to cor-
Before and after soldering,
rect positions on relay (70) and, using
clean solder joints with cot-
adjustable wrench, connect RF cables to
ton swabs and alcohol.
correct connectors on relay.
3-104
