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 ARMY TM 5-6675-309-14
MARINE CORPS TM 08840A-14/1
2.
Connect switch S2 (67) wires to termina-
(b) Replacement
tion points. Replace spot ties as required.
1.
Insert switch S11 (64) in PSTS front panel
Place PSTS front panel (51) in PSTS in-
3.
(51).
strument case (1). Align mounting holes.
2.
Install nut (30) securing switch S11 (64)
4.
Install 20 screws (49) and washers (50)
to PSTS front panel (51).
securing PSTS front panel (51) to PSTS
3.
Place knob (31) on switch S11 (64) shaft.
instrument case (1).
4.
(8) Switches S4 thru S9. Remove and replace
Tighten two setscrews (32) securing knob
typical switch S4 (68, figure 8-6, sheet 1) as
(31) to switch S11 (64) shaft.
follows:
5.
Solder wires to switch S11 (64).
(a) Removal.
Place PSTS front panel (51) in PSTS in-
6.
1. Remove 20 screws (49) and washers (50)
strument case (1). Align mounting holes.
securing PSTS front panel (51) to PSTS
Install 20 screws (49) and washers (50)
7.
instrument case (1). Remove PSTS front
securing PSTS front panel (51) to PSTS
panel far enough to provide access to
instrument case (1).
switch S4 (68) connections.
(10) Circuit breaker CB1. Remove and replace
2. Tag and unsolder wires from switch S4
circuit breaker CB1 (9, figure 8-6, sheet 1) as
(68).
follows:
3. Remove nut (27), washer (28), and lock-
washer (69), securing switch S4 to PSTS
(a) Removal.
front panel (51). Remove switch S4.
1. Remove 20 screws (49) and washers (50)
(b) Replacement.
securing PSTS front panel (51) to PSTS
instrument case (1). Remove PSTS front
1.
Install nut (70) and lockwasher (69) on
panel (51) far enough to provide access to
switch S4 (68).
circuit breaker CB1 (9).
2.
Insert switch S4 (68) in PSTS front panel.
2. Tag and disconnect all wires from circuit
Install washer (28) and nut (27) securing
3.
breaker CB1 (9).
switch to front panel.
3. Remove four screws (24) securing circuit
Solder wires to switch S4 (68).
4.
breaker CB1 (9) and boot (26) to PSTS
front panel (51). Remove circuit breaker
Place PSTS front panel (51) in PSTS in-
5.
CB1 and boot.
strument case (1). Align mounting holes.
Install 20 screws (49) and washers (50)
6.
(b) Replacement.
securing PSTS front panel (51) to PSTS
instrument case (1).
Switches S11, S12, S13, and S16. Remove
(9)
and replace typical switch S11 (64, figure 8-6,
sheet 1) as follows:
(a) Removal
Isopropyl alcohol is flammable and gives
off harmful vapors. Use only in well-ven-
1. Remove 20 screws (49) and washers (50)
tilated area away from open flames and
securing PSTS front panel (51) to PSTS
sparks. Avoid prolonged or repeated inha-
instrument case (1). Remove PSTS front
lation of vapors.
panel far enough to provide access to
switch S11 (64) connections.
1. Clean threads of four screws (24) with
isopropyl alcohol using lint-free material.
2. Tag and unsolder wires from switch S11
Wipe dry.
(64).
2. Apply sealing compound primer (MIL-
3. Release two setscrews (32) securing knob
S-22473) to threads of four screws (24).
(31) to shaft of switch S11. Remove knob.
Allow to air dry.
4. Remove nut (30) securing switch S11 (64)
3. Apply sealing compount (MIL-S-22473,
to PSTS front panel (51). Remove switch
Grade C) to threads of four screws (24).
S11.
8-117
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