PS Magazine - TB 43-PS-627

PS, The Preventative Maintenance Monthly

ISSUE 627

FEBRUARY 2005
PS Magazine - TB 43-PS-627 - Page 4 of 33
A
few quick checks on your
MLRS generator can generate
powerful results during operations.
Check that the voltage regulator
is tightly screwed on the generator.
Only two screws hold the regulator
in place. If they work loose, the
regulator can come completely off
or shake so much its electrical con-
nection to the generator becomes
shaky. Then you have electrical
problems.
Push down on the rear secondary
generator belt. If it gives more than
1/4 inch, it may be too loose and
could start slipping. That could
cause electrical problems. Tell your
mechanic so he can tighten the
belts.
Make sure the pigtail on the
back of the generator is plugged in
tightly. If it works loose, once
again you have electrical problems.
Do all three checks at least
weekly during PMCS.
PS 627
FEB 05
5
MLRS…
PS 627
FEB 05
4
M113-Series FOV…
N
ew roadwheel arms come with pipe plugs installed. Unless you mechanics replace
the plugs with relief valves and grease fittings, you’ll have to install
more
new
roadwheel arms again real soon.
That’s because crewmen can’t lube the arms when there are no grease fittings.
With no grease, the bearings burn out. It’s that simple.
So pull the plugs and put in a safety relief valve, NSN 4820-01-070-7670, and
grease fitting, NSN 4730-00-050-4208, whenever you put on a new roadwheel arm.
By the way, don’t be fooled by the roadwheel arms on M113A3s. The threads are
recessed in a larger hole, but they still take the same relief valve and grease fitting
as other M113-series vehicles. The larger hole is there to protect the fittings from
damage.
Voltage regulator
screwed down tight?
Check
generator
belts for
play
Pigtail tight?
hmmm…
might be
your
generator.
let’s check
it out.
Replace pipe plugs…
…with relief valve and grease fittings
yeouch!
sounds like
you could
use a little
grease!
sure, but
before that,
I could use
a safety relief
valve and a
grease fitting
on my road-
wheel arms!
Stop Plugging Ahead
{sigh}
I just
don’t seem to
have any get-
up-and-go…
627.04-05(C)
12/20/04
7:47 PM
Page 1
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