PS Magazine - TB 43-PS-675
PS, The Preventative Maintenance Monthly
ISSUE 675
FEBRUARY 2009
50
PS 675
FEB 09
Dust Bowl Precleaner
The dust bowl precleaner is located
on the back of the excavator’s rear
curbside fender. It collects Fne dust
before it gets into the cab air system’s
air Flter element.
Remove
the
precleaner
lid
by
unscrewing the knurled nut. Use a
clean rag to wipe out the dust and sand
that collects inside the precleaner.
Use low-pressure air—30 psi or
less— from inside-to-out, to loosen dirt
and sand from the Flter element. Never
bang the element on a hard surface.
That damages it. Replace the element
once a year, or after six cleanings.
By the way, squeeze the dust and
sand out of the dust cap on the bottom
of the air Flter element canister. Do
this before the day’s run.
Also, make sure the cap is in place on the canister. It has a bad record of getting knocked
off when the air hose or tools are removed from the canister’s storage compartment.
±ilter Element Is Crucial
A clean air Flter element
is crucial in dusty and sandy
areas. So keep an eye on
the air cleaner restriction
gauge located on the cab’s
dashboard.
If the gauge reads more
than 25 in H20 (625mm
H2O), it means the air Flter
element is dirty and needs
to be cleaned.
IHMEE…
keep your Ihmee
on the job by
following the
pmcs in tm 5-
2420-230-10 and
use these pm
tips for smooth
airflow through
the excavator’s
air filters.
engineer battalions in
Southwest Asia (swa)
are giving the Interim
high mobility engineer
excavators (Ihmee)
a real run for their
money.
they’re moving, dumping
and excavating dirt
and sand in the worst
possible conditions.
Wipe dust out
of precleaner
Use
30 psi
or less
Keep an eye on the air
Flter restriction gauge
Air Filter
PM
Reminders
675.50-51.indd
1-2
12/24/08
9:23:18 AM
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