TM 10-5410-228-24
(4)
Remove four screws (19) and four nuts (20) securing terminal board assemblies TB1 and TB2
(13) to control box weld assembly (5).
(5)
Remove two screws securing terminal lugs to switch S3 (21). Tag terminal lug wires.
(6)
Remove two nuts (22), lockwasher (23) and locking ring (24) securing switch S3 (21) to control
panel faceplate assembly (4).
(7)
Loosen setscrew (25) securing knob (26) to potentiometer R1 (27). Note position of knob (26) and
remove knob (26) from potentiometer R1 (27).
(8)
Tag and unsolder leads to potentiometer R1 (27).
(9)
Remove nut (28) and lockwasher (29) securing potentiometer R1 (27) to control panel faceplate
assembly (4).
(10) Tag and unsolder leads to post bindings E1 and E2 (30 and 31).
(11) Remove two nuts (32) and two washers (33) securing post bindings E1 and E2 (30 and 31) to
control panel faceplate assembly (4).
NOTE
Steps 12 through 15 apply to both switches.
(12) Tag and unsolder leads to switches/indicators S1/DS1 and S2/DS2 (34).
(13) Using extraction tool, carefully squeeze tabs (36) and pry indicator unit (35) from switch
housing (37).
(14) Using a small flat-head screwdriver, turn two screws (38) counterclockwise until two retaining
cams (39) lay down.
(15) Pull indicator unit (35) and switch housing (37) from control panel faceplate assembly (4) and
retaining cover (40).
(16) Loosen two captive screws (41) and remove relay K1 (42) from socket XK1 (43).
(17) Remove socket XK1 (43) from control box weld assembly (5). Tag and remove wires from sockets
(43).
(18) Remove two screws (44), two flat washers (45), two lockwashers (46) and two nuts (47) securing
buzzer (48) in control box weld assembly (5). Discard two lockwashers (46).
(19) Remove two screws securing terminal lugs to buzzer (48). Tag terminal lug wires.
(20) Remove four nuts (49), four lockwashers (50), eight flat washers (51) and four screws (52)
securing connector J1 (6) in control box weld assembly (5). Discard four lockwashers (50).
(21) Remove four nuts (53), four lockwashers (54), four flat washers (55) and four screws (56)
securing connector P3 (7) in control box weld assembly (5). Discard four lockwashers (54).
(22) Remove nut (57) securing connector J2 (8) in control box weld assembly (5).
c.
Assembly (Refer to Figure 2-39)
NOTE
Nut supplied with connector.
(1)
Secure connector J2 (8) in control box weld assembly (5) with nut (57).
(2)
Secure connector P3 (7) in control box weld assembly (5) with four screws (56), four flat washers
(55), four new lockwashers (54) (Item 14, Appx E) and four nuts (53).
(3)
Secure connector J1 (6) in control box weld assembly (5) with four screws (52), eight flat washers
(51), four new lockwashers (50) (Item 14, Appx E) and four nuts (49).
(4)
Secure terminal lugs to buzzer (48) with two screws. Remove tags from terminal lug wires.
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