TM 9-4110-255-14
4-28. TOGGLE SWITCH S1 TESTING AND REPLACEMENT . Continued
(3) Using multimeter set to measure continuity, check toggle switch (4) continuity between terminals 2 to 1
with toggle switch in both GLOWPLUG and OFF position. Continuity should be indicated only when toggle
switch is in the GLOWPLUG position. If continuity was indicated in the OFF position or if no continuity was
indicated in the GLOWPLUG position, replace toggle switch.
(4) If no failure was indicated, close control panel (3) and install two new lock washers (2) and bolts (1).
b. Removal.
(1) Be sure battery has been disconnected then remove two bolts (1) and lock washers (2). Open control
panel (3). Discard lock washers.
NOTE
Terminal and mounting hardware is supplied with toggle switch.
(2) Tag wire leads (5) and remove two screws (6), lock washers (7), and wire leads.
(3) Remove nut (8), lock washer (9), retainer (10), and toggle switch (4).
c. Installation.
NOTE
Terminal and mounting hardware is supplied with toggle switch.
(1) Install toggle switch (4), retainer (10), lock washer (9), and nut (8).
(2) Using tags and wiring diagram (fig. 1-4), install wire leads (5), two lock washers (7), and screws (6).
Remove tags.
(3) Close control panel (3). Install two new lock washers (2) and bolts (1).
NOTE
FOLLOW-ON MAINTENANCE:
Unlatch and close control box cover door.
Connect battery (para 4-35) and put unit back into service.
4-72
