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TM 5-4210-220-12
4-13 PUMP BODY - Continued
4-13.1 Structural Control Panel - Continued
b.
Electric Switch Repair (Heater and panel light
switches).
NOTE
Control panel may remain Installed.
Switches
are
non-repairable.
Replace if faulty.
(1)
Tag and remove wires from switch.
(2)
Remove protective boot (1) and nut (2)
Remove switch and discard.
(3)
Install new switch using nut (2) provided
with switch.
(4)
Install protective boot (1).
(5)
Connect wires to switch as tagged.
(6)
Set battery switch to BOTH. Check
function of new switch.
c.
Air Switch Repair (tank, foam, eductor and flush
switch).
NOTE
Control panel may remain Installed.
Air
switches
are
non-repairable.
Replace if faulty.
(1)
Tag and remove air lines from switch.
(2)
Remove nut (1) and switch body (2) and
discard.
(3)
Install new air switch (2) using nut (1)
provided with switch.
(4) Apply pipe sealant (item 22, Appendix E)
to elbow fittings (3) and install in switch
body.
(5)
Connect air lines to switch as tagged.
(6)
Close air tank drain valves, set battery
switch to BOTH and start main engine.
Start and operate the structural fire
system as detailed in para. 2-11. Be sure
the air switch operates correctly.
4-122
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