PS Magazine - TB 43-PS-688
PS, The Preventative Maintenance Monthly
ISSUE 688
MARCH 2010
12
PS 688
MAR 10
13
PS 688
MAR 10
Y
our TM gives you what you need to maintain your equipment—usually. But there
was a mistake when the base HEMTT IETM, TM 9-2320-279-14&P (EM 0290), was
released in June 2009. The washer, NSN 5310-00-935-8984, is shown in the wrong
place for axle number 4. That washer is shown as Item 26 in Fig 158 of the repair
parts and special tools list (RPSTL).
If the star washer is missing from the ground wire, or is on the wrong side of the
ground wire, the crane on your HEMTT wrecker could quit operating. But you can
put a stop to that.
Just put the washer in the right place
the next time the wrecker comes in for
service. Note and follow these steps until
the ±gure in the IETM is corrected:
1.
Take off the nut, ground wire—and
the misplaced star washer, if that applies.
2.
Scrape off the paint, about the size of
a quarter, from around the bolt hole.
3.
Put on the star washer, then the
ground wire and nut.
4.
Torque the nut to about 110 lb-ft.
Dear Half-Mast,
While servicing M920 tractor trucks, I’ve noticed a recurring problem.
The wooden spacer plate, NSN 5365-01-079-6540, that goes under
the batteries often rots and needs replacing. That part costs almost $50.
It sure would be nice to have this plate last longer in bad weather and
battery leakage. Do you have a tip that can help us?
SGT B.L.R.
Dear Sergeant B.L.R.,
Certainly. You still have to use the
spacer plate, but here’s a tip that should
help you out. Use battery box liner, NSN
The battery box liner should absorb
and neutralize battery acid and prevent
corrosion to the box. You’ll have to cut
enough liner to cover the entire bottom
of your truck’s battery box.
Then replace it
whenever you
need to.
Battery Spacer Plate’s Fate
HEMTT…
Keep Wrecker
Crane
Working
with Washer
M915-Series Tractor Trucks…
Battery Spacer Plate’s Fate
Washer, NSN 5310-00-935-8984, goes
between ground wire and frame, like so:
I may
be a
little
guy…
…but I have the
power
to stop
your crane from
working!
cover all
the space
you want to
protect with
this liner!
hey buddy,
what’s up
with you?
I feel a leak. I
wish
somebody
would remember
to check my
batteries…
688.12-13.indd
1-2
2/1/10
11:44:56 AM
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