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TM 10-4210-235-13
Table 4-1. Unit Preventive Maintenance Checks and Services for Fire Suppression Equipment
Trailer Set - continued
ITEM
ITEM TO BE
NOT FULLY MISSION
NO
INTERVAL
CHECKED OR
PROCEDURE
CAPABLE IF:
SERVICED
Unit Functional Check
j. Squeeze both fire hose nozzle
- continued
valve levers to relieve system
pressure.
k. Remove fire hose nozzles and
install the ones removed from the
trailer mounted extinguisher
assembly hose assembly.
l. Open (raise) both cylinder
valve quick release levers.
m. Repeat steps h. through j.
n. Disconnect the trailer mounted
extinguisher assembly hose
assembly from the auxiliary
mobile hose reel cart inlet hose
assemblies. Connect the auxiliary
mobile hose reel cart inlet hose
assemblies together and install the
loose fire hose nozzles to the
trailer mounted extinguisher
assembly hose assembly.
o. On both the trailer mounted
extinguisher assembly and the
auxiliary mobile hose reel cart,
install crank onto brake shaft and
rewind hose assembly onto drum.
Install fire hose nozzles onto
nozzle bracket and secure with lock
pin.
p. Open both charge ball valves
and close both purge ball valves.
Place retaining clips over each ball
valve handle.
q. Install one new strip tie on
each ball valve retaining clip.
r. Install two new strip ties on
each cylinder valve.
4-10
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