PS Magazine - TB 43-PS-561
PS, The Preventative Maintenance Monthly
ISSUE 561
AUGUST 1999
PS 561
45
PS 561
44
AUG 99
M157-Series Smoke Generator . . .
or you’re out of fuel. Either way, the
fuel pump can burn out if you don’t
shut down.
Gaskets in good shape?
Fittings loose?
Check the bands holding the tank
for breaks or kinks. Make sure nothing
has been pushed between the bands
and tank and that the bands are locked
in place on the top of the tank. If the
All four wedge blocks bolted tightly?
causes leaks, and damages the fuel
pump and the cables. So make sure
that all four wedge blocks are in place
and tight. Tighten their bolts if neces-
Bands locked down?
sary. Tell your repairman if blocks are
missing. He can order more with NSN
For the same reason, wiggle the fuel
line fittings at the lid assembly, at the
fuel/water separator, and at the genera-
tor to see if they’re loose. Tighten them
with your wrench if necessary.
During operations, keep your eye
on the control panel fuel lights. When
the
lights go out, shut down ASAP.
Either the fuel pump has lost its prime
Keep it tight
. If the fog oil tank isn’t
tightly strapped down, it can bounce
around and break loose. That could be
fatal to the crew.
four wedge blocks aren’t tightly bolted
down on both generators, the genera-
tors bounce around during travel and
operation. That bends the fuel lines,
don't
let
poor pm
make your m157 a
non-smoker
.
you
call
that
smoking?
Shut down ASAP when lights go out
moking will be so much smoother
for your M157 or M157A2 smoke gen-
erator if you stoke up on a bit of PM.
Pay attention to fuel
. Sounds
simple, but some smoke crews think
they are having major problems when
they are really just out of fuel. So,
check how much fuel is in the two
cans before smoking. If they’re not
full, fill ’em up.
While you have the fuel can lid off,
check that the two rubber gaskets—
one between the can lid and the lid
assembly and the other between the
lid assembly and can—are in place
and not cracked. If the gaskets, NSN
5330-01-337-5350, are missing or
cracked, your M157 will have trouble
drawing fuel.
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