PS Magazine - TB 43-PS-629
PS, The Preventative Maintenance Monthly
ISSUE 629
APRIL 2005
PS 629
APR 05
25
130G Grader…
Circle Drive
J
i
t
t
e
r
s
D7G Tractors…
Tight Seal Deal
With the filter elements installed, be
careful how the canister lid goes back
in place. That lid needs a tight seal to
keep out sand.
The lid has a recessed lip with a
raised mark on its outer cover.
Air Indicator Check
Eyeball the dozer’s air cleaner indicator. It’s
right next to the filter canister. If the indicator
moves from yellow to red, open the canister and
pull out the primary air filter.
Use low-pressure air from a nearby tactical
vehicle to blow air—30 psi or less—from inside to
outside to loosen sand from the dozer’s air filter
element. Never bang the filter on a rock or hard
surface like the dozer’s track. Replace the primary
air filter element once a year, or after six cleanings.
When the dozer’s secondary filter becomes
clogged, have your mechanic replace it.
dude!
you sure
are
dirty!!
tell me
about it!
read
this.
How do I tell if
it’s
clogged?
If, after installing a clean or new primary
filter element, the indicator moves into the
red zone when you try to start, the secondary
filter’s clogged. Black exhaust smoke is
another indication of a clogged filter.
Finally, if you reset the indicator and it
stays in the red zone after installing a new or
clean primary filter element, that is a sure-fire
indication of a clogged secondary filter.
Raised mark points towards vehicle front
Make sure the
raised mark
points toward
the front of
the vehicle.
That way the
primary filter
element fits
tight against
the lid with a
good seal.
Air filter indicator
showing red?
T
hese dozers are getting a constant workout in the big sandbox. That means clean
air is needed (and lots of it) so the vehicle’s engine can run smoothly. Clean air
means clean filters. That’s where you come in with a helping hand and keen eye.
Operators,
you’re ready to
head out before
the day’s run.
But
now
the
grader’s blade
won’t elevate, or
you can’t rotate
the circle drive.
So
what gives
?
it could be
missed lubing
or lack of
exercise.
what’s the
matter?
you sick or
sumpin’?
629.24-25(C)
2/22/05
1:34 PM
Page 1
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