PS Magazine - TB 43-PS-561
PS, The Preventative Maintenance Monthly
ISSUE 561
AUGUST 1999
PS 561
17
AUG 99
PS 561
16
AUG 99
echanics, forget to regularly lube
the cab lift mechanism on the MLRS
carrier and pretty soon corrosion takes
over. The mechanism freezes in place
and so does the cab.
t may sound good put to music, but vibration plays havoc with the double flex
joint on your M113A3 carrier’s exhaust system.
Enough vibration loosens the two V-clamps that hold the joint in place. As the
joint loosens, hot exhaust gases vent into
the engine compartment. That cooks the
air filter and other components.
Prevent this by checking the V-clamps
after each operation. If you can move the
clamps with your hand, they’re too loose.
Call in your mechanic to tighten ’em.
Mechanics, replace missing or damaged
V-clamps with NSN 5340-01-134-3802.
M113A3 Steer Lock Conversion
Mechanics, hold off on replacing a bad electrical steer lock solenoid, NSN
5945-00-933-8450, on that M113A3 FOV. Instead, get your DS to install the
new electrical-to-mechanical conversion kit, NSN 2520-01-434-8596. At $480,
the kit costs more than a new electrical solenoid, but it also lasts a lot longer.
MLRS . . .
M113A3 FOV . . .
Clamps loose? Get ’em tightened
If you see grease and dirt building
up on the outside of the boot, chances
are it’s leaking. Replace it with NSN
If the clamp is worn or damaged, re-
place it with NSN 4730-00-908-3193
before locking the boot
back in place.
You can avoid a stuck cab by lubing
the lift mechanism semiannually like
it says in LO 9-1450-646-12.
After you raise the cab, remove the
clamp and then coat the inside of the
canvas boot with molybdenum disul-
fide grease (GMD). That’ll keep it lift-
ing for another six months.
While you’re at it, carefully check
the surface of the boot. Engine heat
and constant wear from the lift mecha-
nism stud can create small leaks. The
holes are difficult to see, but will let
the boot go dry as the GMD leaks out.
Eyeball boot for leaking GMD
Dirt and corrosion freeze lift mechanism
while you're
lubing, don't forget
my
cab lift
mechanism
.
somebody
sure
woke up
on
the
wrong side
of
the
motorpool
this morning!
hrmph!
nothing
good
about the
vibrations
i'm
having.
PS 561
17
AUG 99
PS 561
16
AUG 99
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