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TM 11-5820-890-30-5
4-32. REPLACEMENT OF LAMP HOLDER DS1.
Tools:
1/2-inch open-end wrench
1/2-inch socket
Flat tip screwdriver
9/16-inch open-end wrench
9/16-inch socket
Torque screwdriver
Torque wrench
Soldering kit
Expendable Supplies:
Cotton swabs
Solder
Alcohol
References:
Paragraph 4-31 for removal and installation of circuit breaker CB1.
ITEM
ACTION
REMARKS
REMOVAL
a. Mounting adapter
b. Six captive screws (13)
and front access cover
(11)
c. Circuit breaker CB1 (10)
d. Lens (16) and lamp (15)
e. Wires
f. Lamp holder DS1 (11)
INSTALLATION
g. Lamp holder
DS1 (11)
h. Wires
i.
Lens (16) and lamp (15)
Circuit breaker
j.
CB1 (10)
k. Front access
cover (11) and six
captive screws (13)
Set on work surface with left side
toward you.
Using flat tip screwdriver, fully loosen six
captive screws (13) securing front access
cover (11) to power control chassis (10).
Remove front access cover. Inspect front
access cover, replace if required.
Remove and retain.
Remove and retain lens (16) and lamp
(15) from defective lamp holder DS1 (11).
Using soldering kit, tag and desolder wires
from defective lamp holder DS1 (11).
Using 9/16-inch open-end wrench, remove
and retain nut and Iockwasher securing
defective lamp holder DS1 (11) to power
control chassis (17). Remove lamp holder
through front of chassis. Discard defective
lamp holder
Position lamp holder DS1 to power con-
trol chassis (17) and install retained lock-
washer and nut. Using torque wrench and
See figure 4-5.
Refer to paragraph 4-31 for
removal procedures.
See figure 4-10.
These were removed in
step f.
9/16-inch socket, torque nut to 29 to 31 in-lb.
Using soldering kit, solder tagged wires
Before and after soldering,
to leads of replacement lamp holder DS1
clean wires and leads with
(11). Remove wire tags. Replace
alcohol and cotton swabs.
insulation sleeving as required.
Install retained lens (16) and lamp (15)
These were removed in
to lamp holder DS1 (11).
step d.
Install retained circuit breaker CB1 (10)
Refer to paragraph 4-31 for
in power control chassis (17).
installation procedures.
Hold in place and tighten six captive screws See figure 4-5.
(13) securing front access cover (11) to
This was removed in
power control chassis (10). Using torque
step b.
screwdriver, torque screws to 8 to 10 in-lb.
4-127
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