TM 11-5895-1090-34/TO 31 R2-2TSC-152
attenuator.
(5) Place gasket over meter and secure
(6) Install variable resistor and secure to
meter to front panel with three screws and nuts.
e.
M2-STATUS MONITOR Meter.
front panel with hex nut.
(7) Replace knob lock and tighten it finger
(1) Remove the two hex nuts from the
tight on threaded shaft of the variable resistor.
screw posts on the rear of the meter.
(8) Gently turn the plastic knob control
(2) Tag and remove the solder terminal
counterclockwise until the mechanism is in the unlocked
lugs which hold the wires to the rear of the meter.
position, taking care not to unscrew the knob lock
(3) Remove three screws and nuts
assembly from the threaded shaft.
securing meter and gasket to the front panel.
(9) Replace knob so that it is in close
(4) Inspect the gasket and replace if worn
proximity but not touching the soft rubber gasket of the
or damaged.
knob lock. Tighten the two setscrews.
(5) Place gasket over meter and secure
h. S1-SHF MONITOR Switch.
meter to front panel with three screws and nuts.
(1) Loosen setscrew on switch knob;
(6) Reconnect leads to the meter.
remove knob and knob lock.
(7) Remount the solder terminal lugs on
(2) Tag and solder leads to switch.
the screw posts on the rear of the meter.
(3) Remove hex nut securing switch to
(8) Fasten the solder terminal lugs to the
front panel.
rear of the meter using two hex nuts.
f.
M3-ELAPSED TIME Meter.
(4) Remove lockwasher from shaft of
switch.
5) Place lockwasher over shaft of new
nuts securing ELAPSED TIME meter to chassis.
switch and install switch.
(2) Tag and unsolder leads at rear of
(6) Secure switch to front panel with hex
meter.
nut.
(3) Reconnect leads to meter.
NOTE
(7) Reconnect leads to switch.
(8) Replace knob lock and knob; tighten
In 4 below, the elapsed time indicator
will be temporarily secured to its
the setscrew in knob.
i.
S2-STA TUS MONITOR Switch.
supporting frame with the screw upside
(1) Loosen setscrew on switch knob;
down in order to facilitate installation.
remove knob and knob lock from front panel.
(4) Hold the elapsed time indicator in
(2) Tag and unsolder leads to switch.
place and insert one screw from the bottom of the
(3) Remove hex nut securing switch to
mounting bracket.
From the top, tighten a nut
front panel.
sufficiently so that the elapsed time indicator is held in
(4) Place lockwasher over shaft of the
place.
new switch and place switch in position.
(5) In the remaining hole, insert the screw
(5) Secure switch to front panel with hex
from the top and tighten on lockwasher and nut.
nut.
(6) Remove the first nut and screw which
(6) Reconnect leads to switch.
temporarily held the meter to the mounting bracket.
(7) Replace knob lock and knob; tighten
Reinsert the screw from the top and tighten on
set-screw in knob.
lockwasher and nut.
j.
S3--Channel Select Switch.
g. R1-CAL ZERO Variable Resistor.
(1) Loosen setscrew on switch knob;
(1) Loosen the two setscrews on control
remove knob and knob lock from front panel.
knob and remove it.
CAUTION
(2) Tag and unsolder leads to switch.
(3) Remove hex nut securing switch to
In the following step, be careful not to
front panel.
damage the soft rubber gasket or- the
(4) Place lockwasher over shaft of the
rubber coating on the hex nut.
If
new switch and install switch in position.
damaged, the knob lock must be
(5) Secure switch to front panel with hex
replaced.
nut.
(2) With one hand, push in on the knob
(6) Reconnect leads to switch.
lock. Using the tip of a 1/2 inch open-end wrench,
(7) Replace knob lock and knob; tighten
remove knob lock by turning the hex nut and plastic ring
the setscrew in knob.
counterclockwise.
k.
S4-FAULT RESET Switch.
(3) Remove hex nut securing variable
(1) Tag leads and remove the two screws
resistor to front panel.
securing leads to the rear of the fault reset switch.
(4) Tag and unsolder leads at rear of
CAUTION
variable resistor.
Be very careful in the next step not to
(5) Reconnect leads to new variable
damage the rubber boot on the hex nut.
3-4