PS Magazine - TB 43-PS-560

PS, The Preventative Maintenance Monthly

ISSUE 560

JULY 1999
PS Magazine - TB 43-PS-560 - Page 4 of 34
PS 560
6
JUL 99
ecause the HEMTT’s battery box
sits directly over the vehicle’s air res-
ervoirs, it’s in your best interest to cor-
ral battery corrosion before it spreads.
If corrosion gets on the air reservoir
fittings, it may not be long before you
lose air pressure. You don’t want that
to happen on the highway.
M977/M985 HEMTT Cargo Trucks . . .
HEMTT . . .
n a hurry to use the material han-
dling crane on your M977 or M985
HEMTT cargo truck? When aren’t you
in a hurry, right?
Well, slow down enough to com-
pletely raise the mast, then make sure
the boom is clear of the cargo bed be-
fore you rotate the crane. If you don’t,
at best you’ll damage the cargo bed
the crane proximity switch is a likely
target. The sensor is no match for steel.
If the mast on either HEMTT isn’t
raised completely, the shaft can catch
and bend the cargo bed panel. Take the
time to make sure everything has
cleared the panel top before rotating
the boom.
Extend
boom all
the way
before
rotating
Put mats under batteries.
..
... and under hold-down straps
The mat comes in a 1 x100-ft roll,
so you can cut whatever size piece will
do the job.
Covering the bottom of the box is
always a good idea, but putting some
pieces under the hold-down straps will
soak up any boil-over from the battery
caps before it has a chance to run down
to the box bottom.
Use electrical ties to hold the mat on
the straps. Get a bundle of 100 ties
that are 6
1
/
2
inches long with NSN
The best way to prevent battery cor-
rosion from spreading is to use a bat-
tery mat, NSN 6160-01-389-1966, un-
der the batteries
and
under the hold-
down straps.
stop
before
the mast
hits
my bed!
hey!
yer leakin'
acid
all over
my
fittings
!
sorry,
i guess i
need a
good
mat
!
panel, and at worst you can break crane
components.
In addition, if the M977 mast is
raised just enough for the boom
straight shaft to clear the panel, then
Hitting bed panel can damage
crane proximity switch
PS 560
6
JUL 99
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