PS Magazine - TB 43-PS-728
PS, The Preventative Maintenance Monthly
ISSUE 728
JULY 2013
2
PS 728
JUL 13
Dear Editor,
Here at Ft Leonard Wood’s Engineer School, students give our seven
AVLBs a lifetime of use every training cycle.
We started having issues
with broken rivets on bridge
panels. Because replacing
rivets is a depot-level repair,
we replaced the panels instead.
That costs a
lot
of money.
PM Bridging gave us
permission to replace the
broken rivets with Grade
8 bolts as a field-level
maintenance fix. That saves
money and greatly reduces
down time.
Here are the bridge panels
you can use Grade 8 bolts on:
Refer to TM 5-5420-203-14 (Jun 91,
w/Ch 2, Jun 97) for removing rivets. Torque
the bolts 150-180 lb-ft.
James S. Carmack
Ft Leonard Wood, MO
Grade 8 flat head
socket cap screws
Grade 8 hex cap screw
Other hardware
Follow these rules when
replacing broken rivets
with Grade 8 bolts:
1.
No more than 15 bolts
per section.
2.
No more than two
bolts in any one hinge.
3.
On the bottom base
frame support, no more
than five bolts in a row.
Here’s a list of bolts, nuts, flat washers and lock washers
we purchased online at:
MLC 60 panel assembly, center male
MLC 60 panel assembly, center female
MLC 60 panel ramp, male
MLC 60 panel ramp, female
MLC 70/85 panel assembly, male
MLC 70/85 panel assembly, female
00-542-3116
00-542-3115
00-542-3117
00-542-3118
01-420-1684
01-419-9478
Panel Name
NSN 5420-
Button head bolt
Nut
Lock washer
Flat washer
3
/
4
x 10 x 3.5
3
/
4
x 10
3
/
4
3
/
4
13003-00008
1136416
0157755
1133864
Item
Size
Part Number
3
/
4
x 10 x 3.5
3
/
4
x 10 x 4.5
3
/
4
x 10 x 5
3
/
4
x 10 x 5.5
3
/
4
x 10 x 6
3
/
4
x 10 x 6.5
3
/
4
x 10 x 7
3
/
4
x 10 x 7.5
1124450
24452
24453
24454
24455
13003-00009
24456
13003-00010
Screw Size
Part Number
3
/
4
x 10 x 4.5
3
/
4
x 10 x 7.5
3
/
4
x 10 x 8
3
/
4
x 10 x 6
3
/
4
x 10 x 6.5
3
/
4
x 10 x 7
3
/
4
x 10 x 7.5
3
/
4
x 10 x 8
3
/
4
x 10 x 10.5
0137868
0137869
0137870
0137871
0137872
0137873
0137874
0137875
15384
Screw Size
Part Number
AVLB…
Torque bolts to 150-180 lb-ft
Replacing rivets with Grade 8
bolts saves time and money
a
bolt
solution
to a
riveting
issue!
using grade 8 bolts
within proper guidelines
has been approved for
use
army-wide.
APPROVED!
which bolt has
two thumbs
and
army approval?
this
one!
Editor’s note:
Thanks for the great information. This should be a big help to
Soldiers in the Feld who have problems with broken AVLB rivets.
728 02-03.indd
1-2
5/29/13
3:05 PM
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