PS Magazine - TB 43-PS-590

PS, The Preventative Maintenance Monthly

ISSUE 590

JANUARY 2002
PS Magazine - TB 43-PS-590 - Page 3 of 29
PS 590
JAN 02
3
PS 590
JAN 02
2
HMMWVs…
Distribution
If your
HMMWV
doesn’t have
this box…
…or this
box, your
HMMWV is
deadlined.
What the
heck is
going on
around
here?
I’m ready!
Let’s go-
go-GO!
[sigh] my
battery’s
drained.
my
heater fan
stopped
working.
looks like we
got a problem
with
faulty
distribution
boxes!
Box Check
Distribution Box
Ver: 14.0A
KDS Controls, INc.
Troy, MI
CR-2695
ENGINE ELECTRICAL START SYSTEM
ORD NO 19207ASSY12469158-1
SERIAL NO.
00042
MFR. 09HP0
However, SOUM 00-015 still applies. Disconnect the batteries’ negative cables or
the engine harness cannon plug from the distribution box any time the truck is
parked for more than 24 hours.
If the label is missing or doesn’t indicate “Ver: 14.0A”, remove the box and
replace it with the new engine electrical start system (EESS), NSN 6110-01-463-
9260. The EESS has one cannon plug under the hood and looks like the original box
except for a bright yellow tag.
The EESS will be used to replace all other distribution boxes when they go bad.
If you have had any type of failure with the non-version 14.0A box, send an e-
mail message to:
HMMWV-Reporting@tacom.army.mil
.
If you need help in identifying or replacing these boxes, contact your local
TACOM logistics assistance representative.
I
f your HMMWV is operating with a distribution box, NSN 6110-01-446-7126,
that is not marked “Ver: 14.0A,” your truck is deadlined. Period. It has been dead-
lined since about mid-May 01 by Safety-of-Use Message (SOUM) 01-012.
That message told all HMMWV owners to check for the faulty distribution box,
which can cause vehicles to try to start themselves, among other things.
You might hear a click or continuous cranking from the starter. Batteries might
drain overnight or the windshield wiper or heater motors might work erratically.
The box is under the dashboard above the brake pedal. You can also tell if you
have one of these boxes by looking for two cannon plug connectors instead of one
next to the windshield washer reservoir under the hood.
If you’ve got the box, inspect the label on the box next to the serial number. If
“Ver: 14.0A” is on the label, your truck is not NMC.
Yellow
Tag
590. 02-03 (C)
11/26/01
9:40 AM
Page 1
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