T O 35C2-3-442-2
P-8-627-34
TM-07464A
TM 5-6115-457-34
6-146A. DISASSEMBLY. Refer to figure
6-145A. REMOVAL. Refer to figure 6-36
and remove the load contactor as follows:
6-36A and disassemble the main load con-
tactor as follows:
a. Remove protective cover (3) by
loosening studs (1). Disconnect strap (17)
a, Remove screws (3), lock washers
(4), washers (5) and two terminal covers
by removing screws (14), spacers (16), and
nuts (15),
(6) from the primary contactor assembly
(15). Remove screws (7) and washers (8)
b. Disconnect cover (19) from load
holding the auxiliary contact connector (46)
contactor by removing screws (18). Dis-
to the cover assembly (14).
connect bus bar (12) and contactor cables
b. Remove screws (9), lock washer (10)
(27) from load contactor by removing nuts
and washers (11) from the primary con-
and washers.
tactor assembly (15). Push in on the aux-
iliary contact connector (46) freeing it and
c. Loosen nuts (9) securing bus bars
the gasket (12) from the cover assembly (14).
(12) to reconnection board studs, to re-
Remove the primary contactor assembly (15)
move bus bars from contractors. Dis-
and gasket (13) from the cover assembly (14).
connect electrical connector from con-
c. Remove screws (16), lock washers
nector J41 of load contactor.
(17) and washers (18) from the chamber base
(19), Remove the chamber base (19) and
d. Disconnect load contactor (26) from
gasket (20) from the main base (42),
mounting bracket (25) by removing nuts
d. Disassemble the main contact oper-
(23) and screws (24).
ator assembly (21) in the following manner.
Remove nut (22) and lock washer (23) from
BENCH TEST.
6-146.
adjusting bushing (24). Remove retainer
(25) and locating bushing (26) from the main
a. Apply 24 Vdc at pins A and B of
contact bridge assembly (29). Remove the
main load contactor (3) connector. When
main contact (30), spring (27) and shim (28)
main load contactor operates, it should
from the main contact bridge assembly (29).
create a distinctive noise.
e. Remove the arc chute (35), arc chute
spacer (36) and grommet from the main
b. With an ohmmeter, check for conti-
base (42). Remove nuts (31 and 38), lock
nuity between terminal Al and A2, B1 to
washers (32 and 39), terminal washers (33)
B2, and Cl to C2 on top of the main load
and washers (40) from contact assembly (41).
contactor.
Remove contact assembly (41) from main
base (42).
c. At the connector, check for conti-
nuity between pins C to D, E to F, G to H,
WARNING
J to K, and R to T.
Avoid breathing fumes generated by
unsoldering/soldering. Eye pro-
d. At the connector, check for an open
tection is required.
I
circuit between pins L to M, N to P, and
R to S.
f. Remove screws (43) and washers (44)
from the end plate (71) and remove same
e. Remove the 24 Vdc and check for the
from the main base (42). Remove screws
(47 and 49) and washers (48 and 50) and re-
opposite of the conditions (continuity or open
move the actuator assembly (45). Tag and
circuit) listed in steps (2), (3), and (4).
Change 8
6-117
