Service
14. Lubricate
the screws (25)
and then install and torque
them
to 170–200 in-lb (19–23 N.m ).
CAUTION
Whenever you remove the paint pump screws,
torque them as instructed above, and then retorque
them
after 3 to 5 hours of operation.
15. Check the hydraulic oil level and add Graco-ap-
proved oil as necessary until the level is 1 inch (25
mm)
from the top of the plate. See Fig. 1
1.
16. Turn the pressure control fully counterclockwise
(no
pressure). Plug in the sprayer and turn it on. Run
the sprayer for two minutes to fill the hydraulic sys-
tem.
Increase the pressure to maximum
and turn the
sprayer
on and of
f
four times to help rid the hydraulic
system
of air
.
Fig. 15
21
22a
22b
26a
26
27
25
24
28d
28f
28c
28e
28b
28a
C
4
4a
38
37
36
66
35
3
67
20
28
18a
Torque
to 125–150 in-lb (14–17 N.m).
Apply sealant to the threads.
Lubricate the internal threads.
T
orque to 125–150 in-lb (14–17 N.m).
T
orque to 280–300 in-lb (32–34 N.m).
Lubricate the threads.
T
orque to 320–360 in-lb (36–41 N.m).
T
orque to 170–200 in-lb (19–23 N.m).
Do not alter the position of the nut.
The start switch is located
in the switch box.
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