TM 11-5820-890-30-4
14-25. REPLACEMENT OF U1 VOLTAGE REGULATOR. Continued
ITEM
ACTION
REMARKS
REMOVAL Continued
b. Two screws, flat washers,
Iockwashers, and
shouldered washers
(9) and (11)
c. U1 voltage regulator (10)
leads
d. U1 voltage regulator (10)
wires
e. U1 voltage regulator (10)
INSTALLATION
f. U1 voltage regulator (10)
g. Mounting pad
h. U1 voltage regulator (10)
leads
i. Two screws, flat washers,
Iockwashers, and
shouldered washers
(9) and (11)
j. Mounting plate
Use cross tip screwdriver. Remove and
inspect two screws, fIat washers, lock-
washers, and shouldered washers secur-
ing U1 voltage regulator (10) with mount-
ing pad and U1-3 terminal lug to the
chassis. If damaged, obtain replace-
ment. See figures 14-5 and 14-6.
Maneuver U1 voltage regulator so U1-1
and U1-2 leads on underside are acces-
sible, and tag location of each wire sol-
dered to leads.
Use long nose pliers and soldering kit.
Desolder tagged wires from U1 voltage
regulator leads.
Remove and discard.
Obtain replacement U1 voltage regulator
and mounting pad.
Place mounting pad on underside of volt-
age regulator.
Use long nose pliers and soldering equip-
ment. Attach and solder tagged wires to
U1-1 and U1-2 leads on voltage regulator,
and remove wire tags.
Use cross tip screwdriver. Install two re-
tained screws, flat washers, lockwash-
ers, and shouldered washers securing
U1 voltage regulator (10) with mounting
pad and U1-3 terminal lug, with wire
soldered to it, to the chassis.
Install retained mounting plate on battery
tray subassembly.
Inspect each screw and its
threaded screw insert to
determine if any are defec-
tive. If a screw is stripped,
do not replace its threaded
screw insert.
Before and after soldering,
clean wires and leads with
alcohol and cotton swabs.
Inspect each screw and its
threaded screw insert to
determine if any are defec-
tive. If a screw is not
stripped but will not tighten,
refer to paragraph 14-33 for
removal and replacement of
threaded screw inserts.
Refer to paragraph 14-19
for installation of mounting
plate.
14-28
