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TM 5-4120-377-14
c. Test
(1) Using multimeter and switch position chart shown on figure 4-46, check continuity at contacts
indicated. With switch position closed, continuity should be indicated. With switch position open, no continuity
should be indicated. Check between each set of contacts and at each switch position.
Figure 4-46.
Switch Position and Terminal Identification
(2) Replace switch if it fails above test.
d. Removal. (Assuming switch has been pulled from box for above test.)
(1) Tag and disconnect leads.
(2) Remove switch.
e. Installation
(1) Cut heat shrink tubing to approximately three-quarter inch (1.9 cm) long.
(2) Slip heat shrinkable tubing over leads.
(3) Solder leads in place using tags and wiring diagram. (See fig. 4-20.)
(4) Slip heat shrinkable tubing over solder connection and shrink in place.
(5) Slip switch into control box and place shaft through hole.
(6) Using wrench and holding backside of switch, secure switch to box with lock washer and nut. Be sure
that switch positions match front plate.
(7) Insert rear panel into box and aline holes.
(8) Using screwdriver and wrench, secure rear panel with four screws and lock nuts.
4-83
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