Displacement Pump Repair - Graco GM3000 Instructions-Parts List Manual

Displacement Pump Repair

WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 12.
NOTE: Packing Repair Kit 235703 is available. Refer-
ence numbers of parts included in the kit are marked
with an asterisk, i.e., (121*). For the best results, use
all the new parts in the kit, even if the old ones still look
good.
NOTE: To minimize down time, and for the best sprayer
performance, clean the transducer (see page 20) when-
ever you repack the pump. Replace these parts as need-
ed.
9
Fig. 24
Removing the pump
1. Flush the pump, if possible. Relieve pressure. Stop
2. Remove the filter (21).
3. Remove suction hose or tube (40).(For suction
NOTE: If repairing only the intake valve assembly, go
to Intake valve repair, in manual 308190.
4. Use a screwdriver to push the retaining spring (12)
5. Loosen the screws (17). Remove the pump (18).
12
21
107
1
17
40
2
39
(See Fig. 24.)
the pump with the piston rod (107) in its lowest
position, if possible.
hose, refer to page 21.
up and push out the pin (11).
120
11
*122
18
*121
*119
30
118
Torque to
1
50 ft–lb (68 N.m)
2
Apply sealant
Model 231363 Shown
05844
308620 31