Graco C02025 [12/20] Service
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Graco C02025 [12/20] Service

Graco C02025 [12/20] Service
12 310543
Service
AMV Disassembly (C02027)
This procedure describes how to disassemble the
automatic metering valve. Refer to Parts information
on page 16.
NOTE: The numbers in parentheses in the text refer to
reference numbers in the parts drawings and parts
lists.
Relieve Fluid Pressure
To relieve the fluid pressure to the AMV, perform the
following procedure:
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 6.
1. Perform the Pressure Relief Procedure to relieve
pressure to the metering valve. Flush the meter-
ing valve, if possible.
2. Disconnect the air and fluid hoses.
Metering Valve Disassembly Procedure
To disassemble the AMV, perform the following proce-
dure:
1. Remove the metering valve from its mounting.
2. Unscrew the 1/4 npt hex nipple (205) from the 90
elbow (206) to disconnect the cartridge (202) from
the AMV (201). Exercise care to avoid spilling seal
fluid (208) from the cartridge.
NOTE: This unit is assembled using a C02021 meter-
ing valve.
3. Disassemble the C02021 metering valve. Refer to
the AMV Disassembly procedure on page 8.
AMV Reassembly (C02027)
This procedure describes how to reassemble the
automatic metering valve. Refer to Parts information
on page 16.
NOTE: The numbers in parentheses in the text refer to
reference numbers in the parts drawings and parts
lists.
NOTE: Clean all the parts thoroughly before reassem-
bling the AMV. Check them carefully for damage or
wear, replacing parts as needed.
Metering Valve Reassembly Procedure
To reassemble the AMV, perform the following proce-
dure:
1. Reassemble the C02021 metering valve. Refer to
the AMV Reassembly procedure on page 9.
2. Reinstall the 1/4 npt hex nipple (205) into the 90
elbow (206) to reconnect the cartridge (202) with
the AMV (201). Exercise care to avoid spilling seal
fluid (208) from the cartridge.
3. Reinstall the AMV on its mounting fixture.
4. Reconnect the air and fluid hoses.
5. Fill the cartridge (202) with seal fluid (208). Do not
exceed the 2.75 in. (70 mm) level measured from
the top of the cartridge. Install the end cap (203).
6. Turn on the air pressure and apply power to the
fluid supply system.
7. Check for leakage at the AMV.
8. Return the AMV to normal operating condition.

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