Filter
Top Products
1.
Always
stop
the
pump
a
the
bottom
of
Its
stroke
when you take a break and at the end
of
the
day. This
helps keep fluid from drying on the rod
and damaging the packings.
2.
Keep
the
displacement
pump
packing
nut/wet-cup
1/4
full
of
TSL at
all
times. The TSL
helps
protect the packings and rod.
3.
Check
the
tightness
of
the
packing
nut
daily.
It
should be tight enough to stop leakage,
but
no
tighter. Overtightening will damage the packings.
------CAUTION------
Proper engine and hydraulic oil level
is
important
to prevent
costly damage
to
the sprayer. Check it
as
often
as
recommended
in
Steps 4 and 5, below.
4.
Check
tha
hydraulic
oil
level
weekly.
The oil
must be up
to
the top mark on the dipstick (25).
Use
only Graco Hydraulic Oil,
see
ACCESSORIES.
5.
Check
the
engine
oil
level
at
least
weekly.
The
oil must
be
up
to
the top mark on the dipstick with
the fill cap unthreaded.
The
engine should not
use
more than one ounce
of
oil per hour
of
operation.
Consult the engine manual, supplied, for additional
recommended maintenance.
6.
Inspect
the
return
line
filter. (65)
frequently
for
clogging. Replace it after every
500
hours
of
opera-
tion or every six months, whichever comes first. A
clogged or worn
out
filter reduces filter capability
and will damage the hydraulic pump.
7.
Change
the
hydraulic
oil
after
every
2000 hours
of
operation or every
12
months, whichever comes
first. For continuous operation in temperatures
above 85°F (30°C), change the oil after every 1000
hours or six months
of
use.
Refer to Step 8
for
pro-
cedure.
------CAUTION
-----
.......
Cleanliness
is
essential when servicing the
hydraulic system.
Use
special care
to
avoid get-
ting dust or dirt into the hydraulic system to pre-
vent damage to the
hydraulic components.
10 307-293
8.
To
change
the
hydraulic
oil:
a.
Follow the Pressure Relief
Procedure
Warn-
Ing,
on
page 8. Allow the oil to cool before pro-
ceeding.
b.
Place a waste container under the drain plug (7)
of
the hydraulic reservoir.
See
Fig
11. Unscrew
the
plug, and drain the reservoir. Reinstall the
plug before proceeding.
c.
Remove the nuts (4) and reservoir (66).
d. Remove the return line filter (55) and install a
new filter assembly.
e. Inspect the inlet filter (21)
and
replace
if
needed.
f. Install the reservoir and nuts. Then pour
in
2-1/2
gallons (9.5 liters)
of
Graco Hydraulic
Oil
through the dipstick hole (25),
See
Fig
11. In-
stall
the dipstick.
Fig
11
_______________
_