PS Magazine - TB 43-PS-623
PS, The Preventative Maintenance Monthly
ISSUE 623
OCTOBER 2004
D
rivers, when you finish using the gladhands on your HEMTT, make sure you put
the covers back in place. You’ll be glad you did!
Leaving the covers off lets
in dirt and moisture. The gunk
that forms can jam open the
check valves and let air
escape. The vehicle’s com-
pressor tries to compensate
for the lost air pressure, but
eventually wears itself out.
So do yourself a favor.
Keep those gladhands covers
in place and keep your
HEMTT feeling glad.
Uncovered
gladhands are
open to dirt
and moisture
PS 623
OCT 04
19
HEMTT…
Keep Gladhands Covered
HEMTT Air Restriction Indicator
NSN 2940-01-203-2446 gets an air restriction indicator for the HEMTT. This NSN replaces the
parts info shown as Item 5, Fig 32 of TM 9-2320-279-24P-1.
PS 623
OCT 04
18
M984A1, M977, M985 HEMTTs…
Turn the Tables
Y
ou need to turn the tables on corrosion for the HEMTT crane’s turntable bearing,
drivers.
That bearing is often missed because you can’t see the grease fitting unless the
mast is raised. Without lube, the bearing goes dry and burns up. A new bearing will
cost your unit between $1,000 and $2,100 depending on the vehicle.
So semiannually, or every 500 operating hours, raise the mast and lube the bear-
ing with GAA. Here’s how:
1.
Find the grease fitting and
pump in GAA until you see new
grease coming out of the seal.
Wipe off the excess.
2.
Rotate the crane 90° and
repeat step 1. Continue rotating
and lubing until the turntable
has been lubed at the 12, 3, 6
and 9 o’clock positions. Then
completely rotate the turntable
360° to spread the lube.
Lube
turntable
bearing
semi-
annually
or every
500
hours
I gave you
an
order!
turn around
and lift
that crate!!
I don’t
care what
you say!
I’m not lifting
anything
until
you give my crane’s turntable
bearing some lube!
…and the
sarge didn’t
know
what
to do!
it’s my
cell.
huh. who
could
that be?
hello?
HEY!
you forgot
something! my
gladhands need
covering!
623.18-19(C)
8/27/04
3:44 PM
Page 1
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