PS Magazine - TB 43-PS-606
PS, The Preventative Maintenance Monthly
ISSUE 606
MAY 2003
G
ot a hot-running engine in your M109-series howitzer or M992A2 ammo carrier?
There’s a good chance the radiator shroud seals are to blame.
Those seals form an air barrier between the radiator and fan tower. That barrier
increases air flow through the radiator to keep the engine cool. If seals are missing,
torn, squashed or mangled, air escapes around the sides of the radiator. Engine tem-
perature goes up.
Have your mechanic check out
the shroud seals next time the
pack’s out. If the seals are missing
or damaged, he’ll order new ones.
NSN 5330-00-102-9927 gets a
seal for the right or left side. NSN
5330-01-314-1439 gets a top or
bottom seal for the M109A6 and
the M992A2. A top or bottom
seal for the M109A2-A5 comes
with NSN 5330-00-899-5220.
PS 606
MAY 03
11
M109-Series SP Howitzer…
Both
Fittings Need Lube
PS 606
MAY 03
10
M109-Series SP Howitzers,
M992-Series Ammo Carriers…
M
any of you are doing only half the job when it comes to lubing the elevation
cylinder on your M109-series howitzer.
The elevation cylinder has
two
lube points. One is in plain sight. The other is hid-
den. The one in plain sight usually gets grease. The hidden one is neglected.
Forgetting either lube point makes for jerky, squeaky cylinder movement.
To reach the hidden fitting, the cannon has to be raised to maximum elevation.
So make a slick move and raise the cannon. Find the fittings on each end of the
cylinder and hit them with a good dose of GAA. Then next month—and every
month after that—remember to grease
both
lube points again.
If you do forget, and the cylinder starts squeaking and jerking, hit that hidden
point with lube.
wow!
what a
beautiful
day!
sez you!
with my worn
out shroud
seals, I
feel like I’m
cooking!
Replace worn or
missing shroud seal
yeah,
you!
hold
it!
you didn’t lube
both
of the
grease fittings
on my elevation
cylinder!
One lube fitting
is in plain sight…
…but other is hidden
back here
Back to TopBack to Top
