PS Magazine - TB 43-PS-564
PS, The Preventative Maintenance Monthly
ISSUE 564
NOVEMBER 1999
etting the drop on old man winter
means checking your vehicle’s batter-
ies and antifreeze
before
the weather
turns frosty.
That means testing both liquids with
the antifreeze and battery tester, NSN
6630-00-105-1418, from your Com-
mon shop sets.
Before you do anything, though, you
have to ensure that the readings you
get from the tester are good. Here’s
how to test the tester:
Take a reading using distilled water,
NSN 6810-00-682-6867. If the read-
ing is more than 34
°
F or less than 30
°
F,
your tester needs adjusting. Take three
or four readings to be sure.
If the reading is off, remove the in-
struction plate on the bottom by work-
ing a knife blade under the edge. Care-
fully dig out the sealer over the screws
closest to each end.
Antifreeze and Battery Tester . . .
–34
o
F
adjustment screw
+32
o
F
adjustment screw
Don’t touch middle screw!
Now that you’ve checked the plus
side of the scale, check out the minus
side.
Both final adjustments
must be clockwise
The screw farthest from the eyepiece
controls the 32
°
F end of the scale. Use
a small screwdriver to adjust the screw.
Clockwise increases the reading; coun-
terclockwise reduces it. Make sure the
final adjustment to 32
°
F is clockwise.
Never touch the middle screw. It
holds the lens in place.
Remove metal cover on bottom
how does
that battery
check out
?
it's
ok
! now
let's check the
antifreeze
.
Repeat the tests until both readings
check out. Then use a little adhesive,
NSN 8040-00-843-0802, to hold the
screws in place. Replace the instruc-
tion plate.
Then go out and test your vehicle’s
antifreeze and batteries confident that
the tester is good to go!
Recheck and readjust if necessary
Mix up a solution of
exactly
one
part distilled water and one part anti-
freeze, NSN 6850-01-441-3218. Stir it
well.
Take several readings with the anti-
freeze solution. If the reading is more
than –32
°
F or less than –36
°
F, adjust
to –34
°
F using the screw closest to the
eyepiece. Again, make sure the last ad-
justment to –34
°
F is clockwise.
Rinse the tester and recheck with dis-
tilled water. Repeat the adjustment for
32
°
F if needed. Then recheck using
the antifreeze solution.
PS 564
7
NOV 99
PS 564
6
NOV 99
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