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TM 11-5820-890-30-5
4-62. REPLACEMENT OF CIRCUIT
Tools:
1/2-inch open-end wrench
1/2-inch socket
Expendable Supplies:
Cotton swabs
BREAKER CB1.
Flat tip screwdriver
Torque wrench
Torque screwdriver
Soldering kit
Solder
Alcohol
ITEM
ACTION
REMARKS
REMOVAL
a. Mounting adapter
b. Side access cover
Set on work surface with left side
toward you.
(16)
Using flat tip screwdriver, fully loosen ten
captive screws (15) securing side access
cover (16) to power control chassis.
Remove and retain side access cover.
c. Circuit breaker CB1 (12)
Using 1/2-inch open-end wrench, remove
and retain hex nut (13), Iockwasher, ON/
OFF plate (14), and locking ring. Remove
CB1 to allow access to wires.
d. Wires
INSTALLATION
e. Wires
Using soldering kit, tag and desolder
wires from leads of circuit breaker CB1
(12). Discard circuit breaker.
Using soldering kit, solder tagged wires
to leads of replacement circuit breaker
CB1 (12). Remove wire tags.
f. Circuit breaker
Position circuit breaker in case (8) and
CB1 (12)
install retained locking ring. Using torque
wrench and 1/2-inch socket, secure circuit
breaker to case with retained ON/OFF
plate (14), Iockwasher, and hex nut (13),
torque nut to 19 to 21 in-lb.
See figure 4-14.
See figure 4-19.
These were removed in
step d.
Before and after soldering,
clean wires and leads with
alcohol and cotton swabs.
These were removed in
step c.
g. Side access
cover (16)
Hold in place and tighten ten captive
screws (15) securing side access cover
(16) to power control chassis. Using
torque screwdriver, torque screws
This was removed in
step b.
See figure 4-14.
to 8 to 10 in-lb.
4-175
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