PS Magazine - TB 43-PS-587
PS, The Preventative Maintenance Monthly
ISSUE 587
OCTOBER 2001
PS 587
OCT 01
17
S
o you just got back the first AOAP report after putting a new 8V71T engine in
your vehicle. The report shows high wear metal contamination in the sample.
Panic time, right?
Not really. High wear metal content is not unusual for new 8V71T engines dur-
ing their break-in period. That period lasts through the first two oil changes.
Because of the metal wear, each oil change interval should not exceed 150 hours of
operation or 6 months duration for the break-in period.
So, if there are no other problems—noise, high temperature, low power—during
the break-in period, don’t worry about changing the oil more often than 6 months or
150 hours. Continue operating and resample at the next prescribed interval. But
make sure you enter the engine’s hours of operation on the AOAP form so the lab-
oratory knows it’s a new engine.
If you have questions about the AOAP report or the break-in period, contact your
local AOAP lab.
PS 587
OCT 01
16
MLRS Carrier…
MAKE SHACKLES STAY PUT
I
t’s tough to tow a disabled MLRS when its towing shackles, NSN 4030-01-187-
0964, are missing. But that’s exactly what happens if a cotter pin breaks or falls out
of a shackle.
So check the cotter pin on
both shackles for cracks and rust
during your before-operation
PMCS. Replace bad or missing
cotter pins with NSN 5315-00-
050-5632. Order the cotter pins
on a DD Form 1348-6 and put
“NSN not on AMDF”
in the
REMARKS block.
You can also substitute a
retaining clip, NSN 5315-01-
188-4490, in place of the cotter
pin. The retaining clip is made of
thicker metal, so rust and dam-
age are less of a problem. It’s
held in place with tension, so it’s
also more likely to stay put.
Check cotter
pin for rust
or damage
Retaining clip
makes good
substitute
how do you
expect
me
to tow you
back
with-
out
towing
shackles?
well, how do
you expect
me
to keep towing
shackles when
nobody checks
my cotter pins?
Metal
ShavingS?
ME!?!
M578 Recovery Vehicle, M109-Series SP Howitzers, M992A2 Ammo Carrier…
587. 16-17 (C)
9/3/01
6:51 PM
Page 1
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