MAINTENANCE
1. Always
stop the pump at 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 1/3 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
.
WARNING
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
the hydraulic oil level weekly
.
The oil must
be
up to the top mark on the dipstick. Use only
Graco
Hydraulic
Oil.
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 recom-
mended
maintenance.
6. Inspect the return line filter frequently for clog-
ging.
Replace it after every 500 hours of operation or
every
6 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 6 months of use. See Step 8 for the proce
-
dure.
CAUTION
Cleanliness is essential when servicing the
hydraulic
system. Use special care
to avoid getting
dust or dirt into the hydraulic system to prevent
damage
to the hydraulic components.
8. To change the hydraulic oil:
a. Follow the Pressure Relief Procedure
Warning
on page 8.
b.
Place a waste container under the
drain plug of
the
hydraulic reservoir
. See Fig 1
1. Unscrew
the
plug and drain the reservoir . Reinstall the plug
before
proceeding.
c.
Remove the nuts and reservoir cover
.
d. Remove the return line filter and install a new
filter
assembly
.
e.
Inspect the inlet filter and replace it if needed.
f. Install
the reservoir cover and nuts. Then pour in
five gallons (19 liters) of Graco Hydraulic Oil
through
the intake filter
. See Fig 1
1. Install the fill
cap.
Fig
1
1
HYDRAULIC
OIL FILL CAP
NUTS
COVER
INLET
FILTER
RETURN
LINE
FILTER
ENGINE OIL
FILL PLUG
HYDRAULIC OIL DRAIN
PLUG LOCATED UNDER
RESERVOIR
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