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TM 9-4110-257-14
4-28. TOGGLE SWITCH S1 TESTING AND REPLACEMENT.
This task covers: a. Testing b. Removal c. Installation
INITIAL SETUP
Materials/Parts:
General Safety Instructions:
Lock Washers (2)
WARNING
1, Appendix G
Marker tags (2)
Exposed rotating parts are used in the
7, Appendix E
refrigeration unit. Personal injury can result
Equipment Conditions:
if battery is connected.
Refrigeration unit shut down (para 2-7) and battery
disconnected (para 4-35).
Control panel cover door raised and latched.
a.
Testing. (See Figure 1-4.)
(1) Be sure battery has been disconnected and 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
(4) 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).
4-70
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