HMMWV Control Boxes Another safety problem

From: Winget, William A CONT JTFCS5G (winget@jfcom.mil)
Date: Tue Jan 22 2002 - 07:51:13 PST


I was just forwarded this, don't think it's the same old box that started
the wiper motors automatically (remember Computers are your friends!!!)
For those of you dealing with HUMVEES and buying those surplused Control
Boxes.
WITH THIS box: The Starter can now engage when you hit the run switch and
keep running until power is disconnected (I'd assume this means yanking the
battery cable, not merely turning the switch off, but it wasn't clear.)
Here's shortened Message.
SUBJECT: SAFETY OF USE MESSAGE (SOUM), TACOM CONTROL NO. SOUM 02-002,
"TECHNICAL," ALL HIGH MOBILITY MULTIPURPOSE WHEELED
VEHICLES (HMMWV) WITH CONTROL, REMOTE SWITCH (PROTECTIVE CONTROL BOX (PCB)),
NSN 6110-01-395-9585, RECEIVED UNDER CONTRACT DAAE07-
01-C-S023.
THE PCB'S RECEIVED AFTER JUL 01, UNDER CONTRACT DAAE07-01-C-S023,
MANUFACTURED BY SIGNAL AND SYSTEMS, INC, ARE
POTENTIALLY DEFECTIVE. THIS PCB (CAGE CODE 51819) MAY CAUSE THE STARTER TO
ENGAGE IMMEDIATELY WHEN THE IGNITION SWITCH IS PLACED
IN THE RUN POSITION. THE STARTER CANNOT BE SHUT DOWN UNTIL POWER IS
DISCONNECTED.
THE PCB, NSN 6110-01-395-9585, IS ONLY AUTHORIZED FOR USE BY THE MARINE
CORPS. HOWEVER, RECORDS INDICATE THAT SOME ARMY
USER'S RECEIVED SUBJECT NSN AFTER JUL 01. BASED ON OUR RECORDS, WE HAVE
RELEASED 922 OF THESE BOXES TO THE FIELD (BOTH MARINE
CORP AND ARMY). FOR ARMY USE, THIS CONTROL BOX HAS BEEN REPLACED BY NSN
6110-01-463-9260 AND IS BEING ACCOMPLISHED THROUGH
ATTRITION.
CONDUCT AN IMMEDIATE INSPECTION TO LOCATE ALL ASL PCB STOCK FOR THE
POTENTIALLY DEFECTIVE PCB'S MANUFACTURED BY
SIGNAL AND SYSTEMS, INC (CAGE CODE: 51819, PN 12446779), UNDER CONTRACT
DAAE07-01-C-S023. SUSPECT PCB'S CAN BE IDENTIFIED BY THE
CONTRACT NUMBER LOCATED ON THE PCB DATA PLATE. ALL PCB STOCKS LOCATED DURING
THE SUPPLY INSPECTION "WILL NOT BE ISSUED". UNITS
ARE REQUIRED TO REMOVE AND SEGREGATE THE STOCK FROM ANY REMAINING ISSUEABLE
STOCKS, MARK THEM AS UNSERVICEABLE (CC "F"),
PCB'S MANUFACTURED BY SIGNAL AND SYSTEMS, INC (CAGE CODE: 51819,
PN12446779), UNDER CONTRACT DAAE07-01-C-S023. SUSPECT PCBS CAN BE
IDENTIFIED BY THE CONTRACT NUMBER LOCATED ON THE PCB DATA PLATE.

Goes on to tell you about fire/ injury/ death etc. Don't be one of them.
Regards Winget.



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