PS Magazine - TB 43-PS-674
PS, The Preventative Maintenance Monthly
ISSUE 674
JANUARY 2009
47
PS 674
JAN 09
Lubrication vs. sand:
Change the oil more frequently, but keep lube to a
minimum on exposed and semi-exposed moving parts.
Keep the cover panels and dust covers in place as much as possible to seal out
sand. Try to position the pumps so that they’re protected from wind and sand.
Put nylon stockings over air cleaners to give them extra help.
Let it cool off:
If you shut
off the M12’s heater without
letting it cool down, the water’s
heat can crack the tank. Turn
off the thermostat and wait
two minutes and then turn off
the heater switch and wait until
the water temperature drops
below 100°F before shutting
down the M12.
Battery:
With the new M12 diesel, don’t worry
about disconnecting the battery at shutdown. The diesel
version disconnects the battery automatically.
Hoses:
The M12’s rubber hoses also deteriorate quickly in extreme heat and
should be checked weekly for cracks and wear.
The quick disconnects on the fuel
supply and return hoses have a bad
habit of sticking. Before you go to the
±eld, make sure the quick disconnects
are working. If they’re not, tell your
repairman.
To help protect the M2 heater’s fuel
lines from damage, you can now order
caps. NSN 5340-01-145-9361 brings a
3/8-in diameter cap and NSN 5340-01-
089-9028 brings a 1/4-in diameter cap.
Belts:
Especially
in
the
desert, the ±ve belts dry out
and crack. If a belt breaks in
the ±eld, your deconning is
done. At least monthly, check
the belts for cracks and proper
tension. One belt that is usually
forgotten is the alternator belt.
To check it, you need to take
off the back panel.
If you’re operating in extreme heat, keep replacement belts on hand and increase
your PLL for all rubber parts. If you decon often, keep a close eye on all belts and
replace them when you spot cracks.
M12A1 Decon…
PM for Trouble-Free Deconning
While checking belts for cracks and slack,
don’t forget alternator belt
Make sure quick disconnects are not sticking
Make sure water temperature drops below
100°F before turning off M12 heater
I’m the
new
diesel.
you
don’t
need to
disconnect
my battery.
deconning can
be practically
trouble-free with
your m12 if you
remember these
bits of pm…
sometimes
deconning is
trouble-free.
sure,
when
you’ve paid
attention
to pm!
then
deconning is
a delight!
it’s
auto-
matic!
674.46-47.indd
1-2
11/22/08
3:21:45 PM
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