Repair; Repairing The Main Air Regulator - Graco EcoQuip 300 Operation, Repair, And Parts

Repair

Repair
Repair Repair
Repairing the the Main Main Air
Repairing Repairing the Main
See Enclosure Parts List, page 39
1. Perform Pressure Relief Procedure, page
2. Make sure all of the air pressure is relieved in
the unit. Remove the water separator filter for
access to the piston cover and return spring.
3. Use a crescent wrench that can open to 2 in. (5
cm) to unscrew the piston cover.
NOTE: There is a spring inside this cover.
NOTE: NOTE:
30
Air Regulator Regulator
Air Regulator
for repair kits.
10.
4. Unscrew the diaphragm cover for access to the
diaphragm and to the end of the piston shaft.
EQ300
5. Remove the diaphragm and inspect for any
cracks or tears. Replace the diaphragm if
necessary.
6. Carefully remove the spring and piston assembly,
then clean out any debris in the body of the
regulator.
EQ300 EQ300 Models EQ300 Models only: Models only: Make sure wire mesh is only:
free of debris.
7. Inspect the piston and its seal for any foreign
matter that may have been the cause for the
piston to stay open.
8. Inspect for any damage to the piston shaft where
it interacts with the diaphragm cup. Replace
components with excessive wear.
EQ600
334667G