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TM 10-4930-250-13&P
2.8 SYSTEM COMPONENT REPLACEMENT. (Refer to figure 2-27.)
The following procedures are provided to assist in the "hot" replacement of system components due to an operational
casualty. System defueling is not required if the replacement component is immediately available. If the system will be shut
down for an extended period of time, defueling IAW para. 2.7 is recommended, if the situation permits.
In the event the casualty results in fuel leakage, immediately isolate the leaking component by closing the nearest valves
upstream and downstream of the failed component.
2.8.1 REPLACE ENGINE MODULE. (Refer to figure 2-27.)
WARNING
•
The
exhaustsystemwill remain
hot
for
some
time
after
engine
shut
down.
Avoid
contact with
exhaust
systemcomponentsuntil they
have
cooledsufficientlyfor
safe
handling.
Seriouspersonalinjury may occur from contactwith
hotmetal. •
Seriousinjury couldoccur if
heavyequipment
is
moved/liftedwithout
sufficientpersonnelto
do
the
job. Always
use
sufficientpersonnelto move
or relocatethe
enginemodule.Use
proper physical
liftingproceduresoruse
a
suitableliftingdeviceor
dolly. Wear safety shoes,gloves,
and
other
suitable
protectiveclothing. a.
Removeenginemodule(7)
from
pump-enginemoduleIAW
para.2.4.d. b.
Install
enginemodulein
(7)
pump-enginemoduleIAW
para.
2.4.k.
2.8.2
REPLACE
PUMP-ENGINEMODULE
.
(Refer to
•
The exhaust system will remain hot for some time after engine shut down. Avoid contact with
exhaust system components until they have cooled sufficiently
for safe handling. Serious personal
injury may occur from contact with hot metal.
•
Serious injury could occur if heavy equipment is moved/lifted without sufficient personnel to do the
job. Always use four personnel to move or relocate the pump-engine module. Use proper physical
lifting procedures or use a suitable lifting device or dolly. Wear safety shoes, gloves, and other
suitable protective clothing.
a.
Shut down system IAW para. 2.5. 1.
b.
Close unisex coupling valves on pump inlet manifold (1) and inlet wye (2).
c.
Close emergency fuel shutoff valve (3).
d.
If installed, remove acoustic cover IAW para. 2.5f.
e.
Remove air cleaner and install dust cap IAW para. 2.9m. Stow air cleaner in accessory module (4).
I.
Disconnect cables W201 (5) and W202 (6) from engine module (7).
Stow cables in accessory module (4).
g.
Disconnect the inlet wye (2) from the pump inlet manifold (1).
h.
Close unisex coupling valves on suction hoses (8) and disconnect the two suction hoses (8) from the pump inlet
manifold (1).
i.
Close unisex coupling valves on 3" x 6' discharge hose (9) and disconnect the 3" x 6' discharge hose (9) from the
pump outlet (3).
j.
Drain pump inlet manifold (1) of fuel.
k.
Remove pump-engine module (10) and position replacement pump-engine module for connection to system IAW
para. 2.4h.
2-39
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