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TM 11-5820-890-30-5
3-27. REPLACEMENT OF SWITCHES.
Tools:
Flat tip screwdriver
Adjustable wrench
Hex key set
Soldering kit
Expendable supplies:
Alcohol
Cotton swabs
Solder
Masking tape
References:
Paragraph 3-25 for removal and installation of test adapter from maintenance group lid.
Figure 3-12 for location of switches.
a. Replacement of Toggle Switches (S7 and S9 through S15).
ITEM
ACTION
REMARKS
REMOVAL
a. Terminal lugs (9)
b. Switch (8, 10, 11, or 13)
INSTALLATION
c. Alignment washer
d. Switch (8, 10, 11, or 13)
e. Hex nut and Iockwasher
f. Terminal lugs (9)
Using flat tip screwdriver, remove and
See figure 3-12 (sheet 1).
retain screws and Iockwashers securing
Use masking tape on
terminal lugs (9) to switch. Note positions
terminal lug wires during
of all terminal lugs removed from switch.
removal to keep track of
positions on switch.
Note position of switch. Using adjustable
wrench, remove and retain hex nut and
Iockwasher securing switch to test adapter.
Remove and discard switch.
Make sure there is an alignment washer
on replacement switch. Check that tab
of washer is pointing toward the switch.
Insert switch into test adapter so that
tab of washer fits into hole in back of
test adapter front panel.
Using adjustable wrench, install and tighten These were removed in
retained Iockwasher and hex nut on switch
step b.
securing it to front panel.
Using flat tip screwdriver, install retained
These were removed in
screws with Iockwashers through terminal
step a.
lugs (9) and into switch connections.
Tighten screws. Make sure each terminal
lug is secured to correct position.
3-96
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