PS Magazine - TB 43-PS-589
PS, The Preventative Maintenance Monthly
ISSUE 589
DECEMBER 2001
PS 589
DEC 01
17
C
rewmen, the wire rope on your M113-series carrier's ramp may look tough, but
corrosion can turn it into a real softy. No rope means the ramp can't be raised or
lowered and your vehicle is NMC.
When the ramp is completely raised, the wire rope retracts under the floor plates.
Any dirty water there soaks the rope and washes away its lubricating grease. Dirt
and moisture cling to the wire strands and corrosion gets the foothold it needs.
You can prevent that by giving the wire rope a good cleaning every 6 months or
1,500 miles. In areas of high humidity, you may need to clean the rope more often.
Here's what to do:
1.
Coat the rope with clean OE/HDO
oil and scrub it with a nylon brush. The
brush loosens dirt particles that get
embedded between the wire strands.
2.
Wipe off the excess oil with a clean
cloth. Make sure you wipe in a spiral-
ing motion, following the direction of
the strands. That wipes away all of the
loose dirt. Wear leather gloves to pro-
tect your hands from frayed wire, too.
3.
Give the rope a light coat of CW-II
grease, NSN 9150-00-530-6814.
Of course, it's also a good idea to
keep the hull under the floor plates clean.
PS 589
DEC 01
16
M2A2/M3A2, M2A2/M3A2 ODS Bradleys…
Halt Hatch Headaches
T
he gunner’s hatch on your up armored Bradley weighs almost 100 pounds. All
that keeps it from giving you a serious headache is a small washer.
The gunner’s hatch up armor modification kit uses a washer, NSN 5310-01-274-
3255, to secure the hinge bracket hold-up pin. The washer is a bit flimsy, so it often
gets bent or broken off.
A bent or lost washer lets the hold-
up pin, NSN 5315-01-440-0269, slip
out of the hinge. With nothing to grab,
the latch mechanism slips loose and—
CRASH—down comes the hatch.
Eyeball that washer right now. If
it’s bent, broken or missing, replace it
with a new and improved washer,
NSN 5310-01-460-8846. The new
washer is twice as thick as the old one.
Unless the hinge screw, NSN 5305-
00-988-1723, is damaged during
removal, you can reuse it to secure the
new washer.
what
happened
to
perry?
looks like
he had a
close
encounter
with his
hatch again!
Bent washer
lets pin slip
out of hinge
Scrub rope with
nylon brush
Wipe clean with
twisting motion
M113-Series FOV…
589. 16-17 (C)
10/25/01
8:33 PM
Page 1
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