PS Magazine - TB 43-PS-557
PS, The Preventative Maintenance Monthly
ISSUE 557
APRIL 1999
PS 557
7
APR 99
PS 557
M1000 HET Semitrailer . . .
M939A2-Series Trucks . . .
...and loading binder threads
...davit winch.
..
why
didn't the
ctis
work?
you may
have
damaged
the
ecu
!
sand
and
grit
are
grinding
up your
pivot pins
!
that's because
you used
grease
to
lube
my
ramp
!
perators, greasing the ramp pivot
shafts and spring rod guides on the
M1000 HET’s ramp is not a good idea.
Grease may help the rod guide move
back and forth on the pivot pin, but it
also attracts dirt, grit and sand like a
magnet. Lube also thickens in cold
weather. That combination works like
sandpaper to
score the surface
of the ramp’s
pivot pins.
If your
semitrailer’s
pins or guides
are now lubed,
use P-D-680
(Type 3) dry
cleaning solvent
to remove any
gunk.
Then, use
solid film
lubricant (SFL),
echanics, before connecting or
disconnecting the central tire infla-
tion system’s (CTIS) wiring harness
connector from the electronic con-
trol unit (ECU) in your 5-tonner,
set the vehicle battery switch to OFF.
Making a harness move while the
battery switch is ON can damage
the ECU and leave you with no
CTIS.
HAZMAT Help
I
f you have HAZM
A
T
questions,
get answers from the Logistics Sup-
port Activity’s Packaging, Storage and
Containerization Center (PSCC).
They handle questions on HAZMAT
regulations, storage, packaging and
transport.
Call them at DSN 795-7070/7025 or
(570) 895-7070/7025. Fax questions to
Ext 7894 or e-mail them at:
psccpkg@logsa.army.mil
Send mail to:
Chief, LOGSA PSCC
ATTN: AMXLS-TP
11 Hap Arnold Blvd
Tobyhanna, PA
18466-5097
rod guides and ramp pivot shafts. SFL
NSN 9150-01-260-2534, on the lubes
the pin and guide’s surface, but doesn’t
attract dirt.
While you’re at it, use SFL on the
semitrailer’s davit winch and the
threads of the loading ramp binders,
too.
Use SFL on spring
rod guides, ramp
pivot shafts.
..
...before moving wiring harness
Make sure battery switch is OFF.
..
PS 557
7
APR 99
PS 557
6
APR 99
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