PS Magazine - TB 43-PS-612

PS, The Preventative Maintenance Monthly

ISSUE 612

NOVEMBER 2003
PS Magazine - TB 43-PS-612 - Page 13 of 33
The fuel will also need help in the
cold. Add 16 ounces of isopropyl alco-
hol, NSN 6810-00-286-5435, to each 5
gallons of untreated gasoline or add 2
ounces of icing inhibitor, NSN 6850-
01-377-5075, to each 5 gallons of any
other untreated fuel.
C
old weather can cause the M157A2 and M56/M58 smoke generators to go cold
turkey on smoking. Ice can form in the fog oil tank and block the fog oil lines unless
you fortify your smoke generator with cold weather PM. Here are the cold facts:
M157A2
MOGAS
JP-1
JP-4
JP-5 turbine
JP-8 turbine
Diesel fuel-arctic
DF-1 diesel
PREHEAT CYCLE
FUEL
0
1
1
3
4
4
4
PS 612
23
M157A2, M56/M58 Smoke Generators…
PS 612
NOV 03
22
• Lightly lube internal moving parts
only. Put a VERY LIGHT coat on inner
rails and on op rod bearing
surfaces.
• Clean the gun often, paying spe-
cial attention to moving parts.
• Keep the gun covered as much as
possible.
• Wipe sand off ammo. Keep the
ammo covered as much as possible.
Following these
four rules will
help your gun much
more than using
miracle
cleaning
and lubing
suggestions.
Firing in the Desert
The rules
for
all
small arms
in the desert
are…
Above 32
°
F
32 to -10
-11 to -25
-26 to -40
PERCENTAGE OF FOG OIL
TO DIESEL/KEROSENE
OPERATING
TEMPERATURE
100/0
75/25
60/40
50/50
When it's below freezing, have your
fuel supply folks add kerosene or diesel
fuel to the fog oil to form a mixture that
flows easier.
They should follow
this table for the
correct mixture…
Then use these
preheat cycles
according to
the fuel you're
using…
hoo! I don’t
think I can
smoke if it’s
this
cold!
my fog
oil’s
turned to
sludge!
wait!
I
think I’ve got
some stuff
that’ll help
us smoke!
Clean often!
Keep covered!
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