PS Magazine - TB 43-PS-675

PS, The Preventative Maintenance Monthly

ISSUE 675

FEBRUARY 2009
PS Magazine - TB 43-PS-675 - Page 26 of 33
49
PS 675
FEB 09
Alcohol Only
Some of these vehicles have ANTIFREEZE stenciled
on the side of the reservoir tank. That’s a big NO–NO!
Ethylene glycol monomethyl ether–known as
antifreeze–should
never
be used in the reservoir
tank. It plugs up hoses and corrodes lines.
So, make sure you paint over any antifreeze stencil
near the excavator’s reservoir tank. If the tank is
already ±lled with antifreeze, drain it and re±ll
it with alcohol, NSN 6810-00-543-7415. No flushing
is necessary.
To prevent future problems, stencil USE ALCOHOL
ONLY near the tank’s ±ller cap. Remember that the
pump has two settings–one for winter and one for
the summer.
A Closer Look
Take a close look at the tank before the vehicle gets prepped for the paint shop.
The tank deteriorates and cracks
from the elements and vehicle
operation (vibration). Replace the
tank using NSN 2930-01-457-5596 if
it’s in bad shape. If the tank looks
OK, make sure it gets covered
or taped before going off to the
paint booth.
By the way, the tank’s cap and
gasket must be ordered separately
Some Fitting TLC
Handle the reservoir tank with TLC
when tightening the ±ttings that
attach the outlet line.
The plastic tank breaks easily if
too much twisting is done. Also,
its threads strip if nuts are over-
tightened.
Tighten the jam nut before you
tighten the line nut. If you run the
line nut down too tight, you can
strip tank threads or break the tank.
Keep the tank ±lled in the summer. That helps keep dirt and dust out.
SEE…
keep these pm tips in
mind when it comes to the
evaporator reservoir tank
(bottle) for the excavator’s
compressed air system
antifreeze unit.
Stencil warning near cap
Cover up
plastic
tank
Tighten
jam nut
frst…
…then
line nut
The setting
can be a little
confusing,
so here’s
the straight
scoop…
…Turn the
knob or
handle to
1 in winter,
0 in summer.
675.48-49.indd
1-2
12/24/08
9:23:01 AM
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