PS Magazine - TB 43-PS-693
PS, The Preventative Maintenance Monthly
ISSUE 693
AUGUST 2010
4
PS 693
AUG 10
5
PS 693
AUG 10
C
rewmen, when replacing or tightening a
wheel assembly in the feld, your best
bet is to shoot For the “stars.”
Some crewmen are guilty oF
tightening those wheel nuts in a
clockwise or counterclockwise
pattern. They’re the same ones
who end up with stripped lugs
and nuts that loosen and
Fall oFF.
Instead, tighten the nuts in
a criss-cross star pattern. That
evens out the torque and keeps
the nuts in place.
Just make sure you tell your
mechanic when you get back From
the feld. He’ll tighten the nuts to the
correct torque: 157-173 lb-Ft on the frst
go-around and 214-236 lb-Ft to fnish.
C
rewmen, it gets really hot in the engine compartment oF your M88A1 recovery
vehicle during operation. In Fact, it gets hot enough to cook the generator without a
little help on your part.
The small air intake vent at
the bottom oF the back wall
in the crew compartment
provides that help. The vent
allows cooling air to get to the
generator, but only iF you let it.
Tossing feld packs, helmets,
and other gear against the vent
blocks airflow. No more air, no
more generator. It’s as simple
as that.
OF course, keeping the vent clear won’t help a bit iF the air intake tube that leads
to the generator comes loose.
Check the hose clamps, NSN 4730-00-908-6292, that
hold the tube in place. IF they’re loose, tighten ‘em.
While you’re at it,
eyeball the tube For cuts
or cracks. Any damage
will let in hot air From the
engine compartment that
can overheat the generator.
IF you fnd any problems,
replace the tube with NSN
The
Proof
is
in the Pattern
Begin
here
End
here
Stryker…
The
Proof
is
in the Pattern
M88A1 Recovery Vehicle…
Keep
Gear
AWAY
From
Vent!
Tighten nuts by the numbers
in criss-cross star pattern
The wrong
tightening
pattern can
let me go on a
solo run!
Keep gear away from generator air intake vent
Check tube for damage
and looseness
where are we
gonna store
all this
stuff?
just
don’t
pile
it in front of my
generator air
intake vent!
693.04-05.indd
1-2
6/25/10
1:08:21 PM
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