PS Magazine - TB 43-PS-607

PS, The Preventative Maintenance Monthly

ISSUE 607

JUNE 2003
PS Magazine - TB 43-PS-607 - Page 9 of 33
H
aving a hard time slip-
ping the powerpack sling
hooks in place when
pulling a combat vehicle
pack?
Some mechanics make
the task simpler by grind-
ing down the hooks a bit.
That lets the hooks slip in
and out of the lifting eyes a
little easier.
Those same mechanics
are in serious danger!
Grinding down hooks,
spreaders, chains or cables
for any lifting device com-
promises
its
lifting
strength. The device could
give out during a lift, crush-
ing equipment and maybe
even you!
So take a close look at all
your lifting devices. If they
have any components that
have been ground down,
replace ‘em right away.
Combat
Vehicles…
grinding
down the
hooks
on that
lifting
sling sure
made this
job
easier!
MLRS Carrier…
T
hat old enemy, vibration, is claiming yet
another victim: the vane axial fan on your
MLRS carrier. Stress and vibration can
cause one or more of the fan’s mounting
bolts to loosen or snap. If that happens,
even more stress is put on the remaining
bolts. Eventually, the vane axial fan can
fall off.
During your PMCS, eyeball the mount-
ing bolts closely. If you spot signs of loos-
ening (shiny spots around the bolt heads)
or missing bolts, report ‘em.
While you’re there, take a look at
the fan drive guard, too. Vibration can
weaken and snap the guard at its
mounting bolts. When that happens,
the guard can fall into the fan blades.
Look for cracks or breaks to the
guard and report any you see. Your
mechanic can replace a damaged
guard with NSN 4140-01-315-3959.
Look for shiny spots
around bolt heads
Guard cracked
or broken?
Replace it
if you think
I’ve
got
the shakes,
you ought
to see my
vane axial
fan!
PS 607
JUNE 03
15
you did
what!!?
what if
the hook
breaks!?
607. 14-15 (C)
5/2/03
1:32 PM
Page 1
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