PS Magazine - TB 43-PS-690
PS, The Preventative Maintenance Monthly
ISSUE 690
MAY 2010
20
PS 690
MAY 10
T
he M67 sight is replacing the M64A1
sight on all Army mortars. But that
doesn’t mean you should stop using
your M64A1s.
The M64A1 should be used until it’s
no longer serviceable. When either the
M64A1 telescope elbow or telescope
mount no longer works, you will
need to order both the M67 telescope
elbow, NSN 6650-01-341-5195, and
the M67 telescope mount, NSN 6650-
01-340-6082. You can’t use M64A1
components with those of
the M67.
Don’t forget batteries.
If the generator
sits for weeks without being started,
count on the batteries going dead. At
least every other week, check the batteries
for corrosion and low water in the cells.
Make sure the battery brackets are tight
so that the batteries can’t bounce around
during operation. Then start the generator
and let it run for an hour to recharge
the batteries.
Get help Flling the generator fuel tank.
It’s easy to overFll the tank if you do the
job on your own and overFlling leads
to leaks. While you Fll the tank, have
someone else watch the fuel gauge so
you’ll know when to stop.
Stay alive on the dead crank switch.
If
you don’t remember to switch the switch
to O±± at shutdown, the batteries will
drain overnight. That sometimes hurts
the batteries’ ability to hold a charge.
But also remember you must switch back
to NORMAL for startup or else nothing
happens. Then you might think something
major is wrong, when it’s just a switch that
needs switching.
Check fluids.
Before start up, check both the oil and coolant. The generator tends to
use
oil, so it’s critical you make sure it
has
oil. And remember the dipstick has both an ENG ON
and ENG O±± reading. If you don’t pay attention to which one you’re reading, you could
put too much oil in, which pops seals, or not enough oil, which destroys the engine.
The M64Al telescope mount, NSN
6650-01-201-8299, is eligible for
unserviceable credit. The M64A1
telescope elbow, NSN 6650-01-211-
3608, is not eligible for unserviceable
credit because it’s considered a
consumable item.
If you have questions, contact
TACOM at DSN 786
-8783, (586)
282-8783 or email:
joe.schmidt
@us.army.mil
Plug in to
Generator
PM
Patriot Missile System…
Plug in to
Generator
PM
Mortars…
M67 Replacing
M64A1 Sight
no juice
means no
firing of
patriot
missiles.
if you don’t want
your patriot to
be dead on the
launcher, plug in to
this generator pm…
uh-oh,
this launcher
isn’t firing today.
that’s ‘cause
someone
forgot to
plug in to
generator
pm!
Don’t forget dipstick has ENG ON and ENG O±± reading
Check batteries
for corrosion,
loose clamps,
low water
Remember
to turn
dead crank
switch
O±± at
shutdown
and to
NORMAL
at startup
If M64A1 sight
components
fail, order both
M67 mount and
telescope elbow
Telescope elbow
Mount
690.20-21.indd
1-2
3/29/10
11:58:50 AM
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