TM9-4120-370-14
TO35E9-229-1
Preliminary procedure: Remove control panel. (See para 437.)
Access
a.
(1) Using allen wrench, loosen setscrews in both knobs.
(2) Remove knobs.
(3) Using screwdriver and wrench, remove four screws and 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.
Inspection
b.
(1) Check switch to see that all leads are properly connected. (See wiring diagram, Figure 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.
