TM 9-4110-255-14
4-28. TOGGLE SWITCH S1 TESTING AND REPLACEMENT.
This task covers:
a. Testing
b. Removal
c. Installation.
INITIAL SETUP
Materials/Parts:
Equipment Conditions:
Lock Washers (2)
Refrigeration unit shut down (para 2-7) and battery
1, Appendix G
disconnected (para 4-35).
Marker tags (2)
Control box cover door raised and latched.
4, Appendix E
a. Testing. (See Figure 1-4.)
(1) Be sure battery has been disconnected then remove two bolts 1) and lock washers (2). Open control
(
panel (3). Discard lock washers.
Figure 4-22. Toggle Switch
(2) Using multimeter set to measure continuity, check toggle switch (4) continuity between terminals 2 to 3
with toggle switch in both START/RUN and OFF position. Continuity should be indicated only when toggle
switch is in the START/RUN position. If continuity was indicated in the OFF position or if no continuity was
indicated in the START/RUN position, replace toggle switch.
4-71
