TM 11-6625-820-45
(13) Remove dial retainer (10) and dial
g. Disassembly of RMI. Refer to TM 11
(12).
5826-211-50 for disassembly procedures for
(14) Remove synchro gear (13) and idler
Indicator, Course ID-250A/ARN.
gear (16).
SIMULA-
of COMPASS
h. Removal
(15) Remove three screws (20), three lock-
TOR indicator.
washers (19), and three synchro
(1) Remove the test set front panel (a
clamps (18).
above).
(16) Pull synchro B1 (21) off synchro
(2) Remove the three screws that hold the
housing (17).
COMPASS SIMULATOR indicator to
the front panel of the test set.
j. Removal of FLAG Meter.
(3) P u l l the COMPASS SIMULATOR
(1) Remove the test set front panel ( a
indicator away from the front panel.
above).
(4) Disconnect the cable attached to the
(2) Disconnect the two wires attached to
the meter. Label these wires for iden-
COMPASS SIMULATOR indicator.
i. Disassembly of COMPASS SIMULATOR
tification when replacing the meter.
(3) Remove the four nuts that hold the
(1) Remove four screws (30) and four
meter to the test set.
(4) Pull the meter out of the front panel.
lockwashers (29) from connector P1
k. Removal of DEVIATION Meter.
(28).
(1) Remove the test set front panel ( a
(2) Pull connector P1 (28) away from
above).
rear housing (23) to allow enough
(2) Disconnect the two wires attached to
space to unsolder leads attached to
the meter. Label these wires for iden-
connector. Label these leads to identi-
tification when replacing the meter.
fy them for reassembly. Remove gas-
(3) Remove the four nuts that hold the
ket (27).
meter to the test set.
(3) Set COMPASS SIMULATOR indica-
(4) Pull the meter out of the front pan-
tor down on a flat surface.
el.
(4) Remove eight screws (25) and eight
l. Removal of TO-FROM Meter.
lockwashers (24).
(1) Remove the test set front panel ( a
(5) Pull front cover (5) away from rear
housing (23).
above).
(6) Remove gasket (22).
(2) Disconnect the two wires attached to
(7) Separate front cover (5) from syn-
the meter. Label these wires for iden-
tification when replacing the meter.
chro housing (17).
(3) Remove the four nuts that hold the
Note. To remove dial window (9), push
meter to the test set.
carefully on front side of dial window (9)
to remove it from front cover (5) and
(4) Pull the meter out of the front panel.
windowseal
(8).
3-4. Replacement, Reassembly, and
(8) Loosen two setscrews (2 and 3). Re-
Lubrication Techniques for Test Sets,
m o v e knob (1) and spring washer
Radio TS-2500/ARM-92 and
(4).
TS-2500A/ARM-92
(9) Pull out drive gear (7). Remove shaft
a. Replacement of TO-FROM Meter.
sleeve (6).
(1) Place the meter back in the front
(10) Pull needle (11) straight off shaft of
panel.
synchro B1 (21).
( 2 ) Replace the four nuts to hold the
(11) Rotate synchro gear (13) until set-
meter to the front panel.
screw (14) lines up with hole in small-
(3) Connect the two wires to their proper
er rim of synchro housing (17). Loos-
terminal on the meter.
en this setscrew.
(4) Replace the test set front panel ( l be-
(12) Repeat step in (11) above to loosen
low).
setscrew (14).
3 - 2 Change 2
