Amv Disassembly (C02027); Amv Reassembly (C02027) - Graco 482 Series Instructions-Parts List Manual

AMV Disassembly (C02027)

This procedure describes how to disassemble the
automatic metering valve. Refer to Parts information
on page 17 while performing the procedure to disas-
semble the AMV.
NOTE: The numbers in parentheses in the text refer to
reference numbers in the parts drawings and parts
lists.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 7.
Relieve Fluid Pressure
To relieve the fluid pressure to the AMV, perform the
following procedure:
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.
Meter Valve Disassembly Procedure
To disassemble the AMV, perform the following proce-
dure:
3. Remove the metering valve from its mounting.
4. Unscrew the 1/4" hex nipple (5) from the 90_
elbow (6) to disconnect the cartridge (2) from the
AMV (1). Exercise care to avoid spilling seal fluid
(8) from the cartridge.
NOTE: This unit is assembled using a C02021 meter-
ing valve.
5. Disassemble the C02021 metering valve. Refer to
the AMV Disassembly (C02021, C02022,
C02025) procedure on page 10.
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Service

AMV Reassembly (C02027)

This procedure describes how to reassemble the
automatic metering valve. Refer to Parts information
on page 17 while performing the procedure to re-
assemble the AMV.
NOTE: The numbers in parentheses in the text refer to
reference numbers in the parts drawings and parts
lists.
NOTE: Repair Kit C02023 plus C26303 Seal Fluid are
available. For the best results, use all the new parts in
the kit when repairing the AMV. Parts included in the
kit are marked with one asterisk for example (5*).
NOTE: Clean all the parts thoroughly before reassem-
bling the AMV. Check them carefully for damage or
wear, replacing parts as needed.
Prior to installation, lubricate all seals and o-rings with
PARKER-O-LUBEt or an equivalent lubricant. Check
with the material supplier for a compatible lubricant.
Meter Valve Reassembly Procedure
To reassemble the AMV, perform the following proce-
dure:
1. Reassemble the C02021 metering valve. Refer to
the AMV Disassembly (C02021, C02022,
C02025) procedure on page 11.
2. Reinstall the 1/4" hex nipple (5) into the 90_
elbow (6) to reconnect the cartridge (2) with the
AMV (1). Exercise care to avoid spilling seal fluid
(8) from the cartridge.
3. Reinstall the AMV back on its mounting fixture.
4. Reconnect the air and fluid hoses.
5. Fill the cartridge (2) with seal fluid (8). Do not
exceed the 2/34" level measured from the top of
the cartridge. Install the end cap (3).
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.