PS Magazine - TB 43-PS-602
PS, The Preventative Maintenance Monthly
ISSUE 602
JANUARY 2003
JAN 03
11
C
ould be that the problem isn’t the starter at all, but the ammo carrier’s starter
relay, NSN 5945-01-291-0734.
Depending on the age of the starting system, the current draw can be greater than
what the starter relay can handle. Too much current fuses the relay’s contacts
together.
When that happens, the carrier may not start and the starter may engage by itself
while the carrier is already running. Mechanics may also get a surprise if they try
to replace the starter. When the last wiring harness is connected, the starter may
engage even if the starter switch is off and the master power is off.
PS 602
JAN 03
10
D
o you have a doghouse cover over the PTO shaft in your AVLB? If not—and the
shaft breaks loose—
you
could be in another kind of doghouse.
Sure, installing the doghouse
cover is a hassle. Space is limited and
you’re probably thinking the cover
doesn’t do much good anyway. But
you’ll regret not installing the cover
if the shaft ever breaks loose.
If that happens, pieces of the PTO
shaft can go flying. The only thing
protecting you is the doghouse cover.
So replace a missing cover with NSN
Once you have the cover in place,
don’t use it as a place to store duffle
bags, ruck sacks or other items.
Straps can work down past the lip
of the doghouse cover and wrap
around the PTO shaft. If that doesn’t
break the shaft, the intense heat can
catch the material on fire.
Doghouse cover
protects against
loose PTO shaft
whaddaya mean
you didn’t have
time to install
my doghouse
cover!?
what if my
pto shaft
breaks
loose??
oh, man!
I’m in the
doghouse
again!
If your
carrier has
any of these
symptoms, have
your mechanic
check the
starter relay
for fused
contacts.
Here’s how…
1.
Disconnect the wiring
harness, NSN 6150-01-
383-4031, from the
starter relay.
2.
Using a multimeter,
place the red lead on pin
E and the black lead on
pin B.
3.
If the multimeter
shows continuity, the
starter relay contacts are
fused. Replace the relay.
Make a note of
this test until the
troubleshooting
procedures in TM
9-2350-293-20-1
are updated.
It’s already
running! You’ll
burn up the
starter!!
M992A2 Ammo Carrier…
Put red
probe in
pin E…
…and
black
probe
in pin B
It’s not
me!
It’s
engaging
on its
own!
AVLB…
Straps can slip past lip
of doghouse cover
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