TM 55-4920-431-13
Note the meter position and remove meter from panel.
e.
Install replacement meter, noting previous meter position.
f.
Install three retaining screws and nuts to secure meter to panel.
g.
Refer to wiring diagram, figure FO-2. Connect wire leads to meter posts and
h.
install nuts on posts. Tighten nuts.
Verify meter in accordance with paragraph 4-30.
i.
Reinstall panel and case lid.
j.
Switch Replacement.
a.
Gain access to inside case per paragraph 4-7.
Refer to wiring diagram, figure FO-2. Identify wire leads at switch to be re-
b.
placed.
c.
Unsolder wire leads from switch terminals.
Remove retaining nut mounting switch (12, figure 5-2) to panel. Remove
d.
switch noting index position.
Install replacement switch, insuring proper indexing.
e.
Install retaining nut on switch.
f.
Refer to wiring diagram, figure FO-2. Solder wire leads to switch terminals.
g.
Reinstall panel and case lid.
h.
LED Indicator Replacement.
a.
Gain access to inside case per paragraph 4-7.
Refer to wiring diagram, figure FO-2. Identify wire leads to defective LED
b.
indicator (CR1 through CR12) to be replaced. Unsolder wire leads.
Press on rear of LED indicator (17, 18, or 19, figure 5-2) to remove from
c.
panel.
Install replacement LED indicator by pressing through front of panel.
d.
Refer to wiring diagram, figure FO-2. Solder wire leads to LED indicator.
e.
f.
Install cap (13, 14, 15, or 16) on LED indicators.
Reinstall panel and case lid.
g.
Instrument Case Replacement.
Remove ten screws (17, figure 5-1) and washers (18) securing front panel
a.
assembly (16) to case (26).
