PS Magazine - TB 43-PS-597

PS, The Preventative Maintenance Monthly

ISSUE 597

AUGUST 2002
PS Magazine - TB 43-PS-597 - Page 6 of 32
Travel Lock Linch Pins
The travel lock linch pins, NSN 5315-01-
382-5953, should be put in the locked position
whenever the mine clearing blade is not in use.
That keeps the blade from being accidentally
dropped while the tank is moving.
M1-Series Tank…
Motors
If the blades come crashing down
when the electrical or manual blade
release is used, too little oil or oil con-
tamination could be the culprit.
Use the electrical switch to raise and
lower the blades once more. If they come
crashing down again, have your mechan-
ic drain the old oil from each motor and
replace it with four ounces of damping
fluid, NSN 9150-00-607-0897.
Water Damage
Heavy rain or high-pressure water
can seep into the relay box if any of the
cover assembly bolts are missing or if
the cover seal is missing or damaged.
Water buildup causes electrical shorts.
I
t takes regular doses of PM to keep your tank’s mine clearing blade out of a main-
tenance minefield. Follow the good words in TM 9-2590-509-10, then dig a little
deeper to unearth these PM tidbits:
Your mechanic can replace a missing
or damaged seal with NSN 5330-01-
277-5647. New bolts come with NSN
5305-00-269-3235. NSN 5310-00-637-
9541 gets new lock washers.
Locking Plate
Keep a close eye on the locking
plate, NSN 2590-01-277-5628, for
the blade’s mounting pins. These
C-shaped plates are under a lot of
stress and can crack or break.
Before starting mine clearing operations,
move both pins to the stowed position so the
blade can be lowered.
Without ‘em, the mounting pins
slip out and the blade comes loose
from the mounting frame.
Depth Adjustment
When you’re training with the mine clearing blade, keep the adjusting plate set at
its shallowest depth—eight inches. That prevents damage to your tank’s engine and
the blade’s teeth.
Power Cable
Make sure the power cable
is secured to the fender tor-
sion bar. That keeps the cable
from getting pinched when
the driver’s hatch is opened.
PS 597
9
Secure power cable to
fender torsion bar
Put linch pins in
locked position when
blade not in use
Look for cracked or
missing lock plates
Fill motors here
with damping fluid
Check relay box for
missing hardware
OK! LEt’s
go! we’ve
got a job
to do!
I can’t do
my
mine clearing
job until
you
do your pM
job!
Move pins to
stowed position
for plowing
Clearing the PM Minefield
Look for cracked or
missing lock plates
597. 08-09 (C)
6/26/02
6:11 PM
Page 1
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