TM 3-6665-209-35
1
Grommet
8
Screw
15
Terminal board
2
Screw
9
Screw
16
Resistor R3
3
Lockwasher
10
Electron tube socket
17
Capacitor C1
4
Screw
11
Nut
18
Electrical chassis
5
Lockwasher
12
Resistor R4
19
Screw
6
Spacer
13
Capacitor C3
20
Nut
7
Lockwasher
14
Resistor R2
Figure 13-Continued.
the wires at their terminals on
wire leading to the power
the relay.
transformer T1 (8, fig. 12).
2. Remove four nuts (24) and
Note
screws (26) and remove the
holding relay K1 (25) from the
The wire leads of the resistor R3 (16,
electrical chassis (13).
fig. 13) may be soldered to terminals
(g) Capacitor C1.
1 and 6 of the electron tube socket
1. Unsolder the two wires leading
(10). These terminals are not used in
to the terminals of the capacitor
the
electron
tube
circuit
and
C1 (17, fig. 13).
therefore may be used to support the
2. two nuts (20) and screws (19)
resistor R3. A wire lead from the
and remove the capacitor C1
terminal board (15) (terminal strip-
(17) from the electrical chassis
lug) also would be soldered to
(18).
terminal 6 of the electron tube socket
(h) Capacitor C3 and resistors R2, R3,
and a wire lead from the power
and R4.
transformer T1 (8, fig. 12) would be
1. Unsolder the wire leads of the
soldered to terminal 1 of the electron
capacitor C3 (13) resistor R2
tube socket.
(14), resistor R3 (16), and
resistor R4 (12) from the
(i) Electron tube socket.
terminal board (15).
1. If
not
already
previously
removed, pull the electron tube
Note
V1 (11) from its electron tube
socket (10, fig. 13).
The terminal board (15) (terminal
2. Mark all wires leading to the
strip-lug) is mounted to the electrical
electron
tube
socket
and
chassis (18) at any convenient
unsolder the wires at their
location. It may be secured at one of
terminals on the socket.
the mounting holes of the electron
3. Remove two nuts (11) and
tube socket (10) or a separate
screws (9) and remove the
mounting hole may be drilled in the
electron tube socket (10) from
chassis for this terminal board. If the
the electrical chassis (18).
terminal board (15) was not released
(3) Cleaning and inspection.
when
prior
components
were
(a) Clean all parts with dry-cleaning
removed, remove the mounting
solvent and wipe dry with a-clean,
hardware which secures it to the
dry cloth.
chassis.
(b) Check all wires for broken or
cracked insulation.
If wire is
2. Unsolder the other wire leads of
damaged or there is doubt as to its
the capacitor C3 (13) and
condition, replace the wire.
resistor R2 (14) from terminal 5
(c) Inspect the terminals of the switch,
of the electron tube socket (10).
timers, relays, and terminal boards
3. Unsolder the other wire lead of
for good electrical conductivity.
the resistor R4 (12) from the
Inspect the relay contacts for
ground terminal on the electron
cleanliness.
tube socket (10).
(d) Inspect the grommets (1) for wear or
4. Unsolder the other wire lead of
deterioration. Replace if necessary.
the resistor R3 (16) from its
connection with the electrical
AGO 8069A
33
