PS Magazine - TB 43-PS-622
PS, The Preventative Maintenance Monthly
ISSUE 622
SEPTEMBER 2004
PS 622
SEP 04
9
M109-Series SP Howitzers, M992A2 Ammo Carrier…
The Ins and Outs of PM
Y
ou’re a firm believer in preventive maintenance. You do a complete and thorough
PMCS whenever the TM requires it. So why is the track on your howitzer or ammo
carrier in such sad shape?
Sprocket wear could be the culprit. Most
crewmen check the sprocket wear marks to make
sure there are no problems. But what they don’t
notice is that the end connectors can sometimes
wear too far on the inside of the sprocket teeth.
In fact, the teeth may be worn down to or
below the wear marks, even though the outside
of the sprocket looks just fine.
When that happens, the sprocket “hooks” end
connectors during operation. The end connectors
are damaged, track life is reduced and sprockets
are broken.
PS 622
SEP 04
8
Ground Power Units…
T
ired of trying to maneuver a vehicle close enough to slave start a dead vehicle? It’s
never easy, but it’s especially hard within the close confines of a motor pool.
Not only is the job time-consuming, but it usually takes two or three soldiers to get
it done. And if there’s one thing maintenance managers can’t spare, it’s personnel.
You can solve this problem by buying a ground power unit (GPU), NSN 6130-01-
475-5321, for your motor pool. The GPU is a Class IX item, weighs only 125 pounds
and is easy to move between vehicles. In the field, it automatically receives a
recharge from the vehicle it’s hooked up to once the vehicle is started.
The GPU uses a dry-cell design,
so there’s no battery acid to handle.
With the GPU, a maintenance
team in a small vehicle can make
repairs to a disabled tank, re-start it
and send it back into action without
having another tank or recovery
vehicle on site to provide power.
The GPU works great with all
combat, tactical and construction
vehicles—anything that uses a
24-volt system.
So make sure
you check the
inside
as well
as
the outside
of the sprockets
during PMCS.
owww!
my
sprockets are
killin’ me!!
Lemme take
a look.
wow!
the inside
of your
sprocket
is com-
pletely
worn!
Check
inside
of sprocket
teeth for wear
GPU powers up all combat, tactical
and construction equipment with
24-volt systems
you wanna
start
something?
then you
came to the
right guy!
622.08-09(C)
7/26/04
8:46 PM
Page 1
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