PS Magazine - TB 43-PS-571
PS, The Preventative Maintenance Monthly
ISSUE 571
JUNE 2000
PS 571
21
JUN 00
Dear Half-Mast,
Some of our M992A2 ammo carriers still have the old grease-lubricated
vaneaxial fans, NSN 4140-00-756-3612.
Trouble is, the TMs only have information on maintaining and lubing the
new oil-lubed fans, NSN 4140-01-284-5722.
Money’s tight so we hate to replace the old fans, especially since they
still work great. But if we can’t maintain them, their days are numbered
anyway.
What should we do?
SSG F.L.C.
M992A2 Ammo Carrier . . .
Dear Sergeant F.L.C.,
First of all, don’t
replace the grease-
filled fans until they
become unserviceable.
That would be a
waste of good money.
Second, lube the
fans semiannually
with instrument and
aircraft grease
(GIA). Just pump GIA
into the grease fitting of each fan until grease comes out of the relief fitting.
Make sure to wipe off any excess grease when you’re finished to prevent
clogging of the radiator core.
Get a 1
3
/
4
-lb can of GIA with NSN 9150-00-985-7246.
NSN 9150-00-985-7247
gets a 6
1
/
2
-lb can.
M109-Series SP Howitzer, M992-Series Ammo Carrier . . .
Prevent
corrosion with
antiseize
compound
ouch!
a little
antiseize
compound
would've
kept those bolts
from
cor
r
oding
!
Corroded bolts snap off
lube
and
let live
,
that's what i
always say!
...until grease comes out here
Pump GIA in here.
..
emoving the deck plates on an
M109-series howitzer or M992-series
ammo carrier isn’t easy, especially if
the deck plate bolts are corroded. In
fact, a corroded bolt is more likely to
snap off—either in the field or when
you try to remove it.
Your mechanic will have to drill and
tap out broken bolts.
Make that bolt removal job a little
easier. The next time you have the
deck plates off, coat the deck bolt
threads with antiseize compound,
NSN 8030-01-044-5034, before putting
them back on.
That’ll keep corrosion
to a minimum and
lessen the chance
of broken bolts.
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