TM 11-5820-890-30-4
16-20. REPLACEMENT OF ON/OFF SWITCH (CB1).
Tools:
Cross tip screwdriver
1/2-inch combination wrench
Torque wrench
Torque screwdriver
Soldering kit
1/2-inch socket
Needle nose pliers
Expendable Supplies:
Solder
Cotton swabs
Alcohol
References:
Paragraph 16-17 for removal and installation of the rear cover assembly (15A1).
ITEM
ACTION
REMARKS
REMOVAL
a. Rear cover assembly (1)
Remove and retain rear cover
assembly.
b. ON/OFF switch (CB1)
(7) terminals
c. ON/OFF switch (CB1)
(7), hex nut, switch
plate, and lock ring
d. ON/OFF switch
(CB1) (7)
INSTALLATION
e. ON/OFF switch
(CB1) (7)
f. ON/OFF switch
(CB1) (7), hex nut,
switch plate, and
lock ring
g. ON/OFF switch
(CB1) (7) terminals
h. Rear cover
assembly (1)
Tag the wire locations on CB1 terminals.
Using soldering kit, desolder tagged wires
from CB1 terminals.
Using 1/2-inch combination wrench,
remove and discard hex nut, switch
plate, and lock ring securing CB1 to
case (3).
Remove and discard defective
ON/OFF switch (CB1) (7).
Obtain replacement ON/OFF
switch (CB1).
Using 1/2-inch combination wrench, install
and hand tighten replacement hex nut,
switch plate, and lock ring securing CB1
to case (3). Using torque wrench and
1/2-inch socket, torque nut to 10 in-lb.
Refer to paragraph 16-17
for rear cover assembly
removal instructions.
See figure 16-4.
Replacement nut, plate,
and lock ring are supplied
with replacement CB1.
Using soldering equipment and needle
Before and after soldering,
nose pliers, attach and solder tagged
clean wires and switch
wires to correct CB1 terminals, and
terminals with alcohol and
remove wire tags.
cotton swabs.
Install retained rear cover
Refer to paragraph 16-17
assembly.
for rear cover assembly
installation instructions.
16-29
