|
| |
4-40.
TM 5-4120-377-14
Preliminary procedure: Remove control panel. (See Para 4-37.)
Figure 4-45. Mode Selector (Rotary) Switch (S1)
a. Access
(1) Using allen wrench, loosen setscrews in both knobs.
(2) Remove knobs.
(3) Using screwdriver and wrench, remove four screws and lock nuts that secure rear panel.
(4) Pull rear panel away from box as far as harness will allow.
(5) Using wrench and holding rear of mode selector switch, remove nut and lock washer from the shaft
face.
b. Inspection
(1) Check switch to see that all leads and resistors R1, R2 and R3 are properly connected. (See wiring
diagram, fig. 4-20.)
(2) Repair or replace all loose or broken leads.
(3) Check that switch terminals are not loose, broken, or corroded.
(4) Check switch for evidence of overheating or other visible damage.
(5) Replace switch if damaged.
4-82
|
