PS Magazine - TB 43-PS-558
PS, The Preventative Maintenance Monthly
ISSUE 558
MAY 1999
PS 558
9
MAY 99
PS 558
8
HEMTT . . .
Stop Oil Slop
A
n engine oil change is a sloppy job on a HEMTT. As described in the manual,
you remove the drain plug and catch the 28-30 quarts of oil in an oil pan on
the ground.
The problem is that there are hoses, crossmembers and springs between the
drain plug and the oil pan.
Since there’s no room to place the pan closer to the drain plug, those compo-
nents get covered in oil. And some oil splashes onto the ground.
Specialist Gregory Record at Ft Sill
minimizes the mess by using a 4-ft sec-
tion of radiator hose (NSN 4720-01-122-
8202, for example) to guide the oil.
He holds one end under the plug and
makes sure the other end feeds into the oil
pan. The little oil that spills can be wiped
up with rags.
ake a big note, fuel haulers, that your M978 HEMTT tanker is out of business
if the MC MANUAL CONTROL EM VALVE lever does not return to the
closed position after its weekly check.
A change to TM 9-2320-279-10 is
in the works, but you need to make
that big note now.
Here’s what you need to do every
week to ensure the emergency fuel
shutoff lever works:
Pull the MC MANUAL CONTROL
EM VALVE lever towards you. That
opens the V1 emergency valve, letting
you dispense fuel.
Pull out the EMERGENCY SHUT-
OFF control. The MC MANUAL
CONTROL EM VALVE should pop
back into place and close down the
V1 valve. That stops fuel flow during
a spill or fire.
If the lever closes, your tanker is
good to go. If it doesn’t close, your
tanker is NMC until it’s adjusted,
lubed or replaced.
M939-Series Trucks . . .
M978 HEMTT Tanker . . .
...then EMERGENCY SHUTOFF control
Pull EM
valve lever.
. .
rivers, be sure
to hook up the mud
flaps on your M929
or M930 dump truck
before dumping a
load. If you don’t,
the flaps get caught
under the rear
wheels when you
back up. Before you
know it, they’re
ripped off.
The mud flaps
have special hooks
to keep them out of
harm’s way when
dumping. Use ’em.
remember,
you need
two
people
to make the
emergency shut-
off check
!
how’s
it look?
good
to
go
!
hook up the
mud flaps
before
you dump.
➥
➥
Radiator hose reduces oil spillage
PS 558
8
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