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 11. 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 11. Install the fill
cap.
Fig 11
HYDRAULIC
OIL FILL CAP
NUTS
COVER
INLET
FILTER
RETURN
LINE
FILTER
ENGINE OIL
FILL PLUG
HYDRAULIC OIL DRAIN
PLUG LOCATED UNDER
RESERVOIR
