Displacement Pump - Graco GM 5000 Instructions And Parts List

Displacement Pump
WARNING
To reduce the risk of serious bodily injury, always fol-
page 4 before repairing the sprayer.
low the Pressure Relief Procedure Warning on
Removing the Pump
See Fig.
21.
1.
2.
3.
4.
-
Flush the pump. Relieve pressure.
Hold the intake valve (223) with a wrench and un-
the hose (133).
screw the suction tube swivel union
(53).
Unscrew
out the rear.
Push the retaining spring
(75)
up. Push the pin (71)
Loosen the locknut (137). Unscrew the pump.
Fig. 2 1
Disassembling
the
Pump
1.
Unscrew the intake valve
(223) and remove all parts.
See Fig. 21.
2. Remove the plug (205). Unscrew the packing nut
(216).
See Fig. 22.
I ,
3. Tap the piston rod
(224) down and then pull it out the
bottom of the cylinder (219). See Fig.
22.
4.
Remove the glands (209*, 208*) and v-packings
(207*, 213*) from the throat. See Fig. 22.
5.
Clamp the flats of the piston rod (224) in a vise.
the piston. Remove the glands (210*, 2 1 4 ' )
and
Loosen the piston (222). Unscrew the nut ( 2 1 1) from
packings (212*, 206*. 203*)
from the piston. See
Fig. 23.
Fig. 22
' W
26
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