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TM 11-5820-890-30-5
14-35. REPLACEMENT OF CB1 CIRCUIT BREAKER.
Tools:
Flat tip screwdriver
Soldering kit
Torque screwdriver
Soldering aid
Flat tip bit
Heat sink
Needle nose pliers
Torque wrench
Adjustable wrench
Expendable Supplies:
Solder
Alcohol
Silicone compound
Cotton swabs
References:
Paragraph 14-17 for removal and installation of the heat sink assembly (8A1).
ITEM
ACTION
REMARKS
REMOVAL
a.
Heat sink assembly (2)
b.
Power supply adapter
chassis (1)
c.
Circuit breaker (12)
wires
d. Hex nut, switch plate,
and lock ring
e.
Circuit breaker
INSTALLATION
f.
Circuit breaker
g.
O-ring
(12)
(12)
h. Hex nut, switch
plate, and lock ring
Remove and retain heat sink assembly
Refer to paragraph 14-17
from power supply adapter chassis (1).
for heat sink removal.
See figure 13-2.
Set upside down on work surface with
front toward you. See figure 13-6.
Use soldering kit, soldering aid, and
heat sink. Tag location of all wires
soldered to CB1 circuit breaker terminals
near the DS1 lamp. Unsolder each wire
from the circuit breaker.
Use adjustable wrench. Note orientation
of circuit breaker. Remove and discard
hex nut, switch plate, and lock ring
securing circuit breaker to chassis.
Remove and discard defective circuit
breaker.
Obtain replacement circuit breaker, hex
nut, switch plate, and lock ring.
Apply silicone compound to o-ring on
replacement circuit breaker.
Use adjustable wrench. Insert replacement
circuit breaker in chassis with proper
orientation. Install and hand tighten
replacement hex nut, switch plate, and
lock ring securing circuit breaker to
chassis. Use torque wrench. Torque
to 20 in-lb.
14-55
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