Graco 482 Series, Instructions-Parts List Manual

Page: 12 / 24

12 310543
Service
AMV Disassembly (C02026)
This procedure describes how to disassemble the
pistol grip metering valve. Refer to
Parts information
on page 16 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.
Gun Handle Disassembly Procedure
To remove the metering valve from the gun handle,
perform the following procedure:
1. Disconnect the tubing (4) from the elbow (2).
2. Remove the socket head screw (7) and the second
screw (not listed) that secures the meter valve (1)
to the mounting block (13). Remove the meter
valve.
NOTE:
The gun handle assembly should not be
disassembled unless there is damage or wear to the
original parts.
3. Remove the four socket head screws (3) from the
gun handle (8).
4. Unscrew the #10-32 x 1/4” fitting (5) to disconnect
the tubing (4) from the gun handle (8).
5. Unscrew the valve (6) that controls the air inlet
pressure to the gun.
6. Carefully remove the roll pin (12) that holds the
trigger (9) in the gun handle (8). Remove the
trigger from the handle.
7. Carefully remove the roll pin (11) that controls the
tension of the spring (10) out of the gun handle (8).
8. Carefully remove the roll pin (12) that holds the
spring (10) in the gun handle (8). Remove the
spring from the handle.
Meter Valve Disassembly Procedure
The procedure to disassemble the C02026 metering
valve and C02027 metering valve are the same.
To disassemble the C02026 meter valve, refer to the
AMV Disassembly (C02027) procedure on page 14.