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 TM 55-1925-273-10-1
0071 00
NOTE
Starting air start pressure must be at least 100 PSI (6.9 bar) to ensure that the engine starts
properly.
d.
Verify that the starting air pressure gauge reads at least 100 PSI (6.9 bar).
e.
On the pump drive engine control panel, turn the start/stop pushbutton (figure 14, item 3) clockwise to release the
pushbutton to the OUT position.
! CAUTION
If oil pressure does not rise within 15 seconds, stop the engine or damage to equipment could
result.
f.
Push the OFF-RUN-START toggle switch (figure 14, item 4) up to the START position to crank the engine. As
soon as the engine starts, release the toggle switch. Verify that the toggle switch returns to the RUN position.
g.
Allow the engine to idle 3 to 5 minutes, or until the coolant temperature gauge (figure 14, item 5) begins to rise.
h.
Check for hydraulic oil leaks in the area of the towing machines on the main deck, and the towing machine operator's
control station on the 01 level.
7.
Prime the diesel engine-driven firefighting pump by completing the following actions:
a.
OPEN the following valves:
(1)
GS-111, FF PMP PRM EDUCTOR DISCH (figure 11, item 14), the fire pump priming eductor discharge
valve, located in AMS 1 on the port side, near the fire pump.
(2)
CA-73, SVCE AIR TO FF PMP PRM EDUCTOR (figure 11, item 15), service air to the fire pump prime, to
start the eductor.
b.
Continue priming the diesel engine-driven firefighting pump until water discharges from the overflow lines.
c.
CLOSE the following valves:
(1)
CA-73, SVCE AIR TO FF PMP PRM EDUCTOR (figure 11, item 15) to stop the eductor.
(2)
GS-111, FF PMP PRM EDUCTOR DISCH (figure 11, item 14)
8.
Load the pump drive engine by completing the following actions:
! CAUTION
Ensure that the engine is at idle before engaging the power take-off lever or damage could occur.
a.
Place the power take-off control lever (figure 14, item 1) in the engaged (forward) position.
b.
Check the engine gauges (figure 14, items 5 and 6) to ensure that the readings are in the green range.
c.
Move the mechanical governor control lever (figure 14, item 2) to the high idle (full load) position (aft). Verify that
the pump drive engine is operating at approximately 1800 rpm.
d.
Observe the fire main pressure gauge to verify that the firefighting pump is delivering water at approximately 120
PSI (8.3 bar).
0071 00-15
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