PS Magazine - TB 43-PS-679

PS, The Preventative Maintenance Monthly

ISSUE 679

JUNE 2009
PS Magazine - TB 43-PS-679 - Page 12 of 33
In the Field
21
PS 679
JUN 09
Hawker Batteries
If your unit has gone to the new
Hawker batteries, be aware that they
have a different threshold than regular
batteries and that will affect the BIT
test. You will need to change the
threshold manually for a correct test.
Check the batteries weekly. Remove all the
battery caps and make sure the electrolyte is
1
/
4
inch below the Fller neck or ledge. Add
distilled water if necessary.
Check the terminals for corrosion. If you
spot any, clean it off with the wire brush in
your tool kit or a scouring pad. Neutralize
corrosion with a mixture of
1
/
2
pound baking
soda to one gallon of water.
While you’re checking the batteries, don’t
forget the ground straps. If they’re broken,
frayed, loose or corroded, the batteries will be
weakened. Do not use the straps to maneuver
batteries. You’ll just break them.
Monthly, pull the batteries and
check for corrosion in the battery
box. If you Fnd any, remove it
with a wire brush and the baking
soda-water solution. If corrosion
has eaten away paint, repaint the
box with the paint that comes with
A good investment is an acid
neutralizing mat for the battery
box that soaks up any battery acid.
Then no cleaning or painting is
required—you just replace the
mat. Order a 100-ft roll of heavy
duty battery mat with NSN 6160-
01-395-5943.
Don’t forget to check the vehicle
batteries.
When
you
check
the
Avenger batteries, pull the seat and
eyeball
the
vehicle
batteries
for
corrosion. Your repairman services
the vehicle batteries.
Operators
Keep the slave cable connected at all
times. That way the Avenger can run
on both system and vehicle batteries.
If
you operate
with
the
truck
turned off, keep an eye on the battery
indicator. Once it reads below 85, you
need to start the truck and recharge the
batteries. Running the ECU/PPU will
also recharge the batteries.
Fill to
1
/
4
inch below
fller cap neck
Clean o±± corrosion with brush and
baking soda mixed with water
Check ground
strap ±or
corrosion, poor
connection or
±raying
Don’t ±orget to check vehicle batteries
±or corrosion
my threshold
is
different
from regular
Batteries!
Keep slave cable
connected at all
times
Below 85?
Start
truck and
recharge!
Put the battery mat in the
bottom of the battery box
to soak up acid.
679.20-21.indd
1-2
5/5/09
4:30:22 PM
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