14 307-711
Maintenance
T
ighten the Paint Pump Screws and Inlet V
alve
See Fig. 10.
1.
Follow the
Pressure Relief Procedure
on page 8.
2. Torque the four screws (25) on the paint pump (22)
to
170–200 in-lb (19–23 N.m).
3. Torque the inlet valve (26) to 320–360 in-lb (36–41
N.m).
Check
and/or Change the Hydraulic Oil
See Fig. 1
1.
1.
Follow the
Pressure Relief Procedure
on page 8.
2. Remove
the fill cap (5). The oil should be 1 inch (25
mm)
from the top of the plate. If the oil is low
, add oil
as necessary. use only Graco lightweight hydraulic
oil,
part no. 218–797. Reinstall the fill cap, hand
tight,
if
you are not going to change the oil.
3. To
change the oil, turn the sprayer over and drain the
oil
through the fill cap hole.
Whenever
you remove the fill cap, be very careful not
to let any dirt, paint particles, or other contaminants
get into the hydraulic system. Contaminants can
cause
damage to the hydraulic system.
CAUTION
4. Fill
the hydraulic pump housing with
16.5 ounces (55
ml) of Graco lightweight hydraulic oil.
Reinstall the fill
cap.
5. Plug
in the sprayer
. T
urn the pressure control (4) fully
counterclockwise (no pressure). Turn on the
sprayer
and let it run for two minutes to fill the hydrau
-
lic system. Increase the pressure to the maximum
and
turn the sprayer on and of
f four times to help
rid
the
hydraulic system of air
.
Fig. 10
Lubricate
the threads.
T
orque to 170–200 in-lb (19–23 N.m).
T
orque to 320–360 in-lb (36–41 N.m).
22
26
25
Fig.
1
1
1
inch
(25 mm)
5
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