TM 5-4520-256-14
3-20. ON/OFF TOGGLE SWITCH MAINTENANCE.
This task covers:
a. Removal
b. Inspection
c. Cleaningd. Installation
INITIAL SETUP:
Tools Required:
Tool Kit, General Mechanics
Materials Required:
Cleaning Solvent (Item 11, Appendix E)
WARNING
Cleaning solvent, Federal specification P-D-680, is toxic and flammable. Use only in a well-
ventilated area. Avoid prolonged breathing of fumes. Keep solvent away from flames. Do not
use in excessive amounts. Avoid skin contact.
Equipment Conditions:
Heater unit shut down and cool.
Power cable disconnected from power source.
Access door removed (para 3-10a).
a.
Removal.
(1)
Tag and disconnect two wires from rear of switch (5).
(2)
Remove nut (2), lockwasher (1), lock ring (4), and switch (5) from control panel (3).
Change 3 3-56
