Install guide

control display unit holder (9). Move re-
lay K1 (4) away from holder far enough to
permit access to wires.
3. Tag and unsolder wires connected to re-
lay K1 (4); remove relay.
4. Unsolder and remove diode CR1 (5).
(b) Replacement.
1.
2.
3.
4.
5.
Prepare and install plastic tubing on
diode. Solder diode CR1 leads to relay
terminals observing polarity and note of
figure 4-17.
Solder tagged wires to terminals of relay
K1 (4).
Install relay K1 (4) and secure to control
display unit holder (9) with two screws
(l), lockwashers (2) and washers (3). To
ensure proper orientation blue bead must
be located as shown in figure 4-17.
Inspect gasket (32). Replace if cracked,
torn loose, or excessively compressed.
Position control and display panel (31)
against control and dis la unit cover
(12). Torque 16 screws (29) and washers
(30) securing control and display panel
(31) to control and display unit cover (12)
5 inch-pounds using procedures described
in paragaph 3-11.
(3) Control and display panel. Remove and re-
place control and display panel (31, figure 4-17) as
follows:
(a) Removal.
1.
2.
3.
4.
5.
6.
Remove 16 screws (29) and washers (30)
securing control and display panel (31) to
control and display unit cover (12). Sepa-
rate control and display panel (31) and
control and display unit cover (12) to
permit access to front panel mechanical
and electrical connections.
Remove eight screws (24) securing bezel
(25) to control and display panel (13).
Remove four screws (23) securing display
unit DS1 (37) to control and display panel
(31).
Disconnect connector (21) from control
and display panel (31 ) by turning two
jackscrews (20).
Tag and unsolder wires connected to fault
indicator DS2 (26).
Remove nut (28) and washers (27) secur-
ing fault indicator DS2 (26) to control
ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
and display panel (31) and remove fault
indicator DS2 (26).
7. Remove six screws (38) and washers (39)
securing control display unit holder (9) to
display and control panel (31). Remove
control and display panel (31).
(b) Replacement.
Isopropyl alcohol is flammable and gives
off harmful vapors. Use only in well-ven-
tilated area away from open flames and
sparks. Avoid prolonged or repeated inha-
lation of vapors.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Clean shoulder of indicator DS2 (26)
where it contacts display and control
panel (31) using isopropyl alcohol and
clean lint-free cloth. Repeat at least three
times using clean cloth each time. When
clean, wipe dry using lint-free material.
Apply adhesive (MIL-A-46146, Type I)
0.010- to 0.030-inch thick on shoulder
contact surface. Install in control and
display panel (31) within 5 minutes after
applying adhesive.
Install nut (28) and washer (27) that se-
cure indicator DS2 (26) to control and
display panel (31) and tighten nut (28)
sufficiently to hold but not enough to
reduce adhesive thickness to less than
0.010 inch.
Cure adhesive for 72 hours minimum.
Secure control display unit holder (9) to
control and display panel (31) with six
screws (38) and washers (39).
Prepare and solder tagged wires to indica-
tor DS2 (26).
Connect connector (21) to control and
display panel (31) by engaging and turn-
ning two jackscrews (20).
Secure indicator DS1 (37) to control and
display panel (31) with eight screws (23).
Secure bezel (25) to control and display
panel (31) with four screws (24).
Inspect gasket (32). Replace if cracked,
torn, loose, or excessively compressed.
Position control and display panel (31)
against control and dis la unit cover
(12). Torque 16 screws (29) and washers
4-143