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 ARMY TM 5-6675-309-14
MARINE CORPS TM 08840A-14/1
relay K4 (114, figure 8-6, sheet 3) the
check for short between lug and binding
cathode of diode CR81 (112) is connected
post J8.
to terminal F2 and the anode to terminal
4.
Solder resistor R88 (20) to binding post J8
E1. There is no diode mounted on relay
(21).
K6.
Replace electronic component assembly
5.
All relays are removed and replaced in
no. 1 A1 (7, figure 8-6, sheet 2) following
the same manner, with the exception of
procedures described in paragraph
K3 and K41, which will be covered sepa-
8-9d(1)(b).
rately. The only difference being the num-
Place PSTS front panel (51, figure 8-6,
6.
ber of screws securing the relay and
whether or not it has a diode. The below
sheet 1) in PSTS instrument case (1).
Align mounting holes.
procedure covers all relays except K3 and
K41.
Install 20 screws (49) and washers (50)
7.
(15) Relays K1, K2, K4 thru K40, and K42 thru
securing PSTS front panel (51) to PSTS
instrument case (1).
K45. Remove and replace typical relay K1
(117, figure 8-6, sheet 2) as follows:
(14) Time totalizing meter M1. Remove and re-
(a) Removal.
place time totalizing meter M1 (60, figure 8-6,
sheet 2) as follows:
1.
Remove 20 screws (49, figure 8-6, sheet 1)
and washers (50) securing PSTS front
(a) Removal.
panel (51) to PSTS instrument case (1).
Remove PSTS front panel far enough to
and washers (50) securing PSTS front
provide access to relay K1 (117, figure
panel (51) to PSTS instrument case (1).
8-6, sheet 3).
Remove PSTS front panel far enough to
Remove two screws (115) and washers
2.
provide access to time totalizing meter
(116) securing relay K1 (117) to relay
M1 (60, figure 8-6, sheet 2).
bracket no. 1 (138, figure 8-6, sheet 4).
2. Loosen two screws (56), washers (58), and
3.
Unsolder and remove diode CR1 (118,
nuts (59) securing flange (57) and meter
figure 8-6, sheet 3).
M1 (60) to PSTS front panel (51, figure
8-6, sheet 1).
Tag and unsolder all wires from relay K1
4.
(117). Remove relay K1.
sheet 2) securing meter M1 (60) to flange
(b) Replacement.
(57); remove meter M1.
Install and solder connections to diode
1.
(b) Replacement.
CR1 (118), observing polarity.
1. Install meter M1 (60) into flange (57),
2.
Solder all wires to relay K1 (117).
tight against back of PSTS front panel
Place relay K1 (117) on relay bracket no,
3.
(51, figure 8-6, sheet 1), and using two
1 (138, figure 8-6, sheet 4).
flange screws (61, figure 8-6, sheet 2),
secure flange to meter M1.
Install two screws (115, figure 8-6, sheet
4.
3) and washers (116) securing relay K1
2. Center meter M1 (60) in PSTS front panel
(117) to relay bracket no. 1 (121, figure
(51, figure 8-6, sheet 1) opening and se-
8-6, sheet 4).
cure with two screws (56, figure 8-6, sheet
2), washers (58), and nuts (59).
Place PSTS front panel (51, figure 8-6,
5.
sheet 1) in PSTS instrument case (1).
Align mounting holes.
sheet 1) in PSTS instrument case (1).
Align mounting holes.
Install 20 screws (49) and washers (50)
6.
securing PSTS front panel (51) to PSTS
4. Install 20 screws (49) and washers (50)
instrument case (1).
securing PSTS front panel (51) to PSTS
instrument case (1).
(16) Relay K41. Remove and replace relay K41
(104, figure 8-6, sheet 3) as follows:
NOTE
(a) Removal.
The cathode of each relay-mounted diode
is always connected to relay terminal X1
and washers (50) securing PSTS front
identified by a blue bead. In addition, on
8-119
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