PS Magazine - TB 43-PS-671

PS, The Preventative Maintenance Monthly

ISSUE 671

OCTOBER 2008
PS Magazine - TB 43-PS-671 - Page 22 of 33
40
PS 671
OCT 08
Dear Half-Mast,
I have a problem with Figure 15 on Pages C-42 and C-43 in the
3-KW TQG technical manual, TM 9-6115-639-13&P (15 Aug 2005).
The drawing and the parts list shows all three electromagnetic relays
as identical.
But they’re not!
The first two relays are 24 VDC and the last relay is 110-120 VAC. If
a soldier plugs a 24 VDC relay into the socket meant for a 110-120 VAC
relay, when the generator is started, the relay coil will burn up!
Am I crazy? Or is the TM wrong?
SGT A.M.I.
Dear Sergeant A.M.I.,
You’re
not
crazy!
The TM is wrong for the 60
Hz model of the generator. (It’s
right for the 400 Hz model.) 60
Hz, 3-KW TQG maintainers, get
out your stubby pencil and make
these changes in TM 9-6115-
639-13&P. (If you’re using an
electronic TM, print the pages
and make the changes, then keep
those pages with the electronic
manual disk.)
Make your Frst change to
±igure 15 on page C-42. The
Fgure has three 2’s, each one
pointing to a relay. Make the 2
on the far right relay, a 2A.
Item
2A
SMR
PAOZZ
NSN
CAGE
60886
PART NUMBER
RH2B-ULAC-110-120V
DESCRIPTION, (UOC)
Relay, Electromagnetic
60 Hz, UOC: LQQ
QTY
1
Now, go to the next page and the parts list. On Item 2, change the quantity from
3 to 2. Now, add an Item 2A. Here’s how the addition should look:
Item
3
SMR
PAOZZ
NSN
CAGE
81349
PART NUMBER
JANTX1N6072A
DESCRIPTION, (UOC)
Semiconductor Device
400 Hz, UOC: LQR
QTY
3
Now look at Item 3 in that list—the semiconductor device. Add to the item
description 60 Hz and a UOC of LQQ. Change the quantity from 1 to 2. Also,
note that although this part is still in stock, it is obsolete and you may have a
semiconductor device with a part number of 1.5KE51CA instead of the one listed.
While you’re there, go ahead and add an additional item for 400 Hz needs.
Here’s how that addition should look:
Relaying a TM
3-KW TQG…
Correction
here
ya go!
great, we are
going to
win!
you ran
a great
race.
what
are you
going to
do now?
we’re going to
disneyworld!
Thanks for
pointing this out,
SGT A.M.I.
671.40-41.indd
1-2
9/3/08
1:09:27 PM
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