PS Magazine - TB 43-PS-587

PS, The Preventative Maintenance Monthly

ISSUE 587

OCTOBER 2001
PS Magazine - TB 43-PS-587 - Page 8 of 32
But the parts are not the same
from one vehicle to another, so
here’s what to order for all Bradleys
except the M2A3/M3A3.
Item
Generator (300-amp)
Regulator
Pigtail
NSN
PS 587
OCT 01
15
M2/M3-Series Bradleys, MLRS Carrier…
T
he 300-amp generator assembly,
NSN 2920-01-204-4470, for the
Bradley and MLRS is no longer
stocked. You now have to order the
individual parts separately.
PS 587
OCT 01
14
Replace Setscrew Right
Replace Setscrew Right
I
I
t’s no fun to replace a broken or missing setscrew in the breech mechanism of an
M1A1 tank’s left extractor—especially if you just did it a few days ago.
So make sure you do it right the first time, mechanics.
First, clean the extractor with dry cleaning solvent, NSN 6850-00-285-8011, and
a clean rag, NSN 7920-00-205-1711. Cleaning gets rid of old sealing compound,
carbon and grease that can keep the setscrew from bonding tightly to the extractor.
Pay special attention to the threads in the setscrew hole.
Next, coat the threads of the new setscrew, NSN 5305-12-189-0277, with sealing
compound, NSN 8030-01-025-1692. If you forget the sealing compound, the
setscrew will vibrate loose and fall out.
Finally, screw the setscrew in place. Leave
3
∕
4
to
7
∕
8
inch of the setscrew showing.
If the setscrew’s too tight, it’ll break. But if it’s too loose, it’ll fall out.
Clean extractor
carefully
Leave
3
∕
4
to
7
∕
8
inch of
setscrew showing
whaddya
mean the
setscrew on
the breech
extractor is
missing?
I just
replaced it
yesterday!
The MLRS cannot use the univer-
sal regulator listed for the Bradleys
because it puts out too much voltage
and can damage the vehicle.
Here’s what the MLRS needs:
The new M2A3/M3A3 Bradleys
use a completely different 400-amp
generator and also require an elec-
tronic control module.
Item
Item
NSN
NSN
Generator (300-amp)
Regulator / Pigtail
Generator (400-amp)
Regulator
Pigtail
Electronic control
module
GET THE RIGHT PARTS
Order
generator
assembly
by its
component
parts
…and
get us
the right
parts!
Use
your
smarts
…
M1A1 Tank…
587. 14-15 (C)
9/4/01
9:46 PM
Page 1
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