PS Magazine - TB 43-PS-675
PS, The Preventative Maintenance Monthly
ISSUE 675
FEBRUARY 2009
10
PS 675
FEB 09
11
PS 675
FEB 09
Dear Sergeant M.U.V.,
Can do!
Item 44g in Table 2-2 of
TM 9-2320-387-10 says that
if your up-armored HMMWV
is missing a retainer plate or
more than one screw, your
truck is NMC. That hasn’t
changed, but TACOM LCMC
will
add
inspection criteria
for your M1151A1, M1152A1
and M1165A1 HMMWV’s
underbody armor. This is
because it has a unique
attaching scheme.
The -10 TM will eventually be updated with the extra criteria. But while you wait
for that to happen, note these additions, and keep a copy of this article with your TM.
Under these circumstances, your HMMWV is still mission capable:
1.
One of two plates must remain on each of the group of two front underbody panels.
2.
One of two plates must remain on each of the group of two rear underbody panels.
3.
A total of up to four retainer plates may be missing provided that the conditions
above are met.
Remember, this change
applies only to M1151A1, M1152A1 and M1165A1
HMMWV models!
Make sure you follow the underbody NMC changes for M1114, M1116 and M1145
up-armored HMMWVs we put out on pages 18 and 19 of PS 667 (Jun 08). Here’s the
link to that article:
Dear Half-Mast,
I’ve heard that
the underbody NMC
criteria for M1151A1,
M1152A1 and
M1165A1 HMMWVs
has changed. Can
you tell me what
those changes are?
SFC M.U.V.
The 24-bolt rim is used in new production HMMWVs, and it doesn’t change the gross
vehicle weight (GVW) rating. When you order this rim, you get the inner rim, outer
rim, and related hardware.
This new rim also has the same form, F
t, and function as the 12-bolt rim. So the
24-bolt rim assembly attaches to the vehicle the same way the 12-bolt assembly does,
except it has 12 additional bolts to fasten the inner rim half to the outer rim half.
During maintenance services, you’ll see that the number of bolts is the only
difference between the 12-bolt and 24-bolt assemblies. You’ve got 12 more bolts on
the 24-bolt rim assembly to remove or install.
±inally, even though there are no compatibility issues when mixing 12-bolt rims and
24-bolt rims on the same HMMWV, tire mixing limitations still apply.
See TACOM SOUM 08-002 for tire compatibility guidance. It’s available online using
this link:
And you can eyeball TACOM MAM 08-019 online here:
By the way, now whenever you order the HMMWV wheel assembly, NSN 2530-01-
558-2138, you’ll get the 24-bolt rim assembly, plus the tire and runfl
at insert.
M1151A1, M1152A1 and M1165A1 HMMWVs…
Underbody NMC Criteria Update
HMMWVs…
New 24-Bolt Wheel
/
Rim Assembly
want a more reliable
wheel/rim assembly
for your hmmwvs?
then get the new
24-bolt option, nsn
2530-01-561-
7
699.
tacom mam 08-019
tells you all about it.
if you haven’t seen that
maintenance advisory
message yet, here’s
what you should know.
what’s with
all these
bolts?!
NSN 2530-01-561-7699 brings new 24-bolt rim
archives/PS2008/667/667-18-19.pdf
don’t forget
the following
underbody
armor checks
when doing
your pmcs!
Front underbody panel plates and screws
Rear underbody panel plates and screws
675.10-11.indd
1-2
12/18/08
1:22:18 PM
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