Graco PGM Instructions - Parts Manual page 38

Repair
Remove Dispense Valve
1. Prepare Gear Meter Assembly for Repair,
page 35.
2. Manually actuate solenoid to ensure pressure has
been removed.
F . 22: Dispense Valve Air Solenoid
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3. Verify air supply is off.
4. Remove air lines from dispense valve.
5. Remove four dispense valve mounting bolts and
remove dispense valve.
NOTE: For remote mount dispense valves, remove
supply hose at inlet block of dispense valve.
6. Refer to dispense valve manual for complete dis-
pense valve repair instructions; refer to Related
Manuals on page 3.
Install Dispense Valve
1. For direct mounted dispense valves, replace
o-ring (409) if necessary.
2. Align dispense valve with mounting pins on front
block.
3. Install four mounting bolts (408) torque to
50-60 in-lb (5.6-6.7 N•m).
38
4. Connect air lines.
5. Apply air to the solenoid.
6. Manually shuttle solenoid, see F
Replace Solenoid
1. Prepare Gear Meter Assembly for Repair,
Dispense Valve
Air Solenoid
2. Disconnect solenoid cable. Remove mating
3. Remove the dispense valve solenoid (410) and
4. Reconnect solenoid cable.
Gear Meter O-Ring Replacement
Refer to Parts section starting on page 49 for o-ring kits.
1. Prepare Gear Meter Assembly for Repair,
2. Remove pump block shoulder bolts (4, 1102). See
pense valve is open when solenoid is depressed.
page 35.
screws (405) from gusset.
replace it with a new solenoid.
page 35.
F . 23.
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NOTICE
Pump section should be fully supported to prevent
damage being dropped. It is recommended that the
gear meter assembly be located on a work bench for
service.
. 22. Verify dis-
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3A5185B