PS Magazine - TB 43-PS-689
PS, The Preventative Maintenance Monthly
ISSUE 689
APRIL 2010
10
PS 689
APR 10
11
PS 689
APR 10
D
rivers, if you’ve been doing a lot of cross-country driving lately, the Fberglass fan
shroud in your HMMWV may have taken a beating.
The bottom of the shroud gets hit by brush, rocks, tree stumps and road debris.
That cracks the shroud and can even bend it inward enough that it gets hit by the fan
blades. That means even more shroud cracks and possibly a shattered blade.
So take a look at the bottom
of
the
shroud
after
you’ve
been operating in the boonies.
If you spot problems, tell your
mechanic.
He’ll repair minor damage
with the Fberglass repair kit,
NSN 2090-00-372-6064. Cracks
and breaks that can be Fxed
without removing the shroud
are considered minor. Major
damage means he’ll have to
replace the shroud following the
instructions that start on Page
3-110 of TM 9-2320-280-20-2
(Jan 96 w/Ch 3).
A
broken ear on the 60-amp, 100-amp or 200-amp alternator on your HMMWV
causes downtime and bucks to Fx it.
But you’ll get a broken ear if you forget to re-install the spacer at the rear alternator
brace! Tightening the brace nut without the spacer
in place
puts too much strain on
the ear. Then the ear breaks off and the alternator has to go
to the rebuild shop.
So
remember
to
reuse
the
spacer, and don’t lose it. Spacer,
NSN 5310-01-337-7034, is used
with brace, NSN 5340-01-292-
8404, on 200-amp alternators.
Spacer,
NSN
5310-01-292-
5354, is used with brace, NSN
on
60-amp
and 100-amp alternators. ±or more
details, eyeball Pages 4-10 and 4-
11 of TM 9-2320-280-20-2.
HMMWV…
Don’t
Shrug O
Shroud
HMMWV…
Don’t
Forget the Spacer!
Check bottom of fan shroud for cracks or breaks
ow!
I hope
they
{ooch!}
check my fan
shroud when
we get back!
it’s
-{ouch!}-
taking a real
beating!
Spacer
goes here
glad I had
ear protection
on the range!
what about ear
protection for my
alternator?!
689.10-11.indd
1-2
2/22/10
4:38:22 PM
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