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 TM 55-1925-273-10-2
0117 00
f.
Push the START-STOP toggle switch (figure 6, item 3) to START in order to crank the engine. As soon as the
engine starts, release the toggle switch (switch is spring-loaded and will return to run position).
! CAUTION
Oil pressure should rise to 24 PSI (1.7 bar) after the engine starts. If oil pressure does not rise,
stop the engine immediately, push the toggle switch down to STOP to prevent damage, and refer
the problem to unit maintenance.
g.
Allow the engine to idle 3 to 5 minutes, or until oil the pressure gauge (figure 6, item 4) reads 24 PSI (1.7 bar).
h.
Operate the engine at low load until all systems reach operating temperatures. Check all gauges (figure 6, items 4,
5, and 6) during the warm-up period.
3.
To operate the firefighting pump:
a.
Ensure that the pump is primed.
b.
Place the PTO lever (figure 5, item 1) in the engaged (forward) position.
c.
Move the governor control lever (figure 6, item 1) to the high idle (full load) position.
d.
Check the engine gauges (figure 6, items 4, 5, and 6) for readings in green range.
e.
Observe the FIRE MAIN PRESS gauge to ensure that the firefighting pump is delivering liquid.
4.
Operate the fire main under usual conditions (WP 0071 00, volume 1).
5.
To shut down the firefighting pump:
a.
Move the governor control lever (figure 6, item 1) to the half engine speed (slow idle).
b.
Place the power take-off control lever (figure 5, item 1) in the disengaged (aft) position.
! CAUTION
Stopping the engine without a cooldown period may cause accelerated wear of engine compo-
nents. Follow the stopping procedure below to avoid damage to the engine.
c.
Allow the engine to idle with no load for a minimum of 5 minutes.
d.
Move the governor control lever (figure 6, item 1) to the OFF position.
e.
Push the START-STOP toggle switch (figure 6, item 3) down to the OFF position.
f.
Push in the EMERGENCY/STOP pushbutton (figure 6, item 2).
SECURE THE PIPING SYSTEM
CLOSE the following valves:
1.
FM-1, SEA SUCT, F. F. PMP. (figure 1, item 1)
2.
AE-28, SEACHEST VENT (figure 1, item 2)
0117 00-6
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