TM 55-4920-221-14
case, binding or catching switch contacts, and loose or
(2) Connect leads to terminals of unexcited
damaged terminals.
bus test switch (33).
(3) Inspect threaded parts for worn or
(3) Install equalizer coil test switch (34), app.
damaged threads and repair threads by chasing, if
switch (35), rheostat switch (36), and rheostat regulator
practical.
switch (37) in a similar manner.
c. Installation.
(4) Install total load disconnect switch panel
(1) Position battery switch (28) in rear of
control panel, and secure with two screws (30) and
lockwashers (31).
136. INVERTER, INVERTER LOAD, AC GENERATOR
LOAD
SWITCHES,
AND
(2) Connect electrical leads to switch
SWITCH.
terminals.
a. Removal.
138. PHONE JACK.
(1) Remove T1, T2, and T3 variable controls
a. Removal.
(paragraph 117).
(1) Remove total load disconnect switch
(2) Tag and remove leads from terminals of
panel (paragraph 120).
inverter load switch (22, figure 8).
(2) Tag and disconnect leads from terminals
(3) Remove special hex nut securing switch
of phone jack (38, figure 8).
to front of control panel, and remove switch from rear of
panel.
(3) Remove phone jack and phone jack
insulating spacer (39) from rear of control panel by
(4) Remove inverter switch and ac generator
removing special hex nut, to-o screws (40), and nuts
load switches (21) in a similar manner.
(41).
b. Cleaning, Inspection, and Repair.
(4) Unsolder and remove capacitor (2) from
(1) Clean and dry thoroughly parts with a
phone jack.
cloth dampened with dry cleaning solvent, P-D680.
b. Cleaning and Inspection.
(2) Inspect switches for damaged case,
(1) Clean and dry thoroughly parts with a
binding or catching switch action, and damaged
cloth dampened with dry cleaning solvent, P-D680.
terminals.
(2) Inspect capacitor for breaks, cracks, burns
(3) Inspect threaded parts for worn or
or indications of discoloration, damaged terminals and
damaged threads and repair threads by chasing, if
replace if defective.
practical.
(3) Inspect phone jack for loose or corroded
c. Installation.
terminals and other damage.
(1) Position inverter load switch (22) in rear of
(4) Inspect insulating spacer for cracks,
control panel, and secure to front of panel with special
breaks, or deterioration.
nut.
c. Installation.
(2) Connect leads to switch terminals.
(1) Install capacitor (2) on phone jack (38).
(3) Install inverter switch, alternator switch,
and ac generator load switches (21) in a similar manner.
(2) Place phone jack insulating spacer (39)
onto the phone jack and position phone jack in rear of
(4) Install T1, T2, and T3 variable controls
control panel.
(paragraph 117).
(3) Secure phone jack to front of panel with
137. BATTERY SWITCH.
special nut, two screws (40), and nuts (41).
a. Removal.
(4) Connect leads to phone jack terminals.
(1) Tag and disconnect leads from terminals
(5) Install total load disconnect switch
of battery switch (28, figure 8).
(2) Remove switch from rear of control panel
by removing two screws (30), and lockwashers (31)
139. TERMINAL BOARD.
securing switch to the front of control panel.
a. Removal.
b. Cleaning, Inspection, and Repair.
(1) Tag and disconnect leads from terminal
board (7, figure 16).
(1) Clean and dry thoroughly parts with a
cloth dampened with an approved dry cleaning solvent,
(2) Remove assembled terminal board from
P-D-680.
control panel frame by removing three nuts from
capscrews (11).
(2) Inspect switch for cracked or damaged
48
