PS Magazine - TB 43-PS-680
PS, The Preventative Maintenance Monthly
ISSUE 680
JULY 2009
46
PS 680
JUL 09
47
PS 680
JUL 09
MRAP
users, a loose sensor wire can cause the engine fre suppression system
(FSS) to activate—without warning—while your MaxxPro is running.
When this happens, you’ll hear a loud explosion go o±± under the hood, ±ollowed
by a fne, gray chemical dust that covers the engine and everything else nearby. Talk
about a mess!
Here’s the problem: high operating temperatures in SWA cause the wire’s sensor
clips to come loose or just ±all o±±. A loose wire that touches the engine makes the
suppression system do its thing—that is, go o±±!
So, eyeball the sensor clips to see i± they’re loose. Find a loose clip? I± so, use a
3
/
16
-in diameter rivet, NSN 5320-01-232-7730, and rivet the clip back in place. Then
use sealant, NSN 8040-01-010-8758, to seal both sides o± the sensor clip, under and
on top o± the hood. For more in±ormation, see TACOM MAM 08-056.
NSN
Item
Equipment
M915-series trucks
M917A1 dump truck
C530A roller
SP 848 roller
RS-28 Tampo roller
SEE
621B scraper
130G grader
D7G tractor
D8 tractor
MW24C scoop loader
815F compactor
HYEX
HMEE BHL Type III
IHMEE
Ignition switch
Lock cylinder w/key
Key blanks
Ignition key and lock
Ignition switch w/key
Ignition key (only)
Switch with key
Ignition lock switch w/key
Ignition switch key
Door key
Battery key
Hood wrench
Disconnect switch key
Battery disconnect key
Battery disconnect switch key
Ignition switch key
Battery disconnect switch key
Battery disconnect switch key
Key blank
Ignition lock switch w/out key
Key only
Door/fuel/ignition key
Key not yet available
Key not required
Construction Equipment…
When You Need the
Right
Key
MRAP
MaxxPro…
Loose Sensor Wire
where are
my keys?
has
anyone seen
my keys?
how many
times have
you heard or
said
that?
well, you’re
not going
anywhere
if the key
to your
construction
equipment
gets lost.
don’t let
that vehicle
just sit in
the motor
pool! order
new keys or
key blanks.
here’s a list
you need to
keep handy…
Look closely for loose wire
sensor clips under the hood
Wire sensor clip
comes loose
Rivet sensor
clip in place
what
was that
noise!?
hello?
where
is
everyone?
680.46-47.indd
1-2
6/9/09
4:46:51 PM
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