Repair
Prepare the Gun for Service
WARNING
Fire, Explosion, and Electric Shock Hazard
To reduce the risk of a fire, explosion, or electric shock:
•Follow the Fluid Voltage Discharge and Grounding Procedure on page 20 and
be sure the ES ON/OFF valve is OFF before flushing, checking, or servicing the system and whenever you are instructed to discharge the voltage.
•Clean all parts with a
•Do not service this equipment unless you are trained and qualified.
•Do not touch the gun nozzle or come within 4 in. (102 mm) of the nozzle during gun operation or until you perform the
Fluid Voltage Discharge and Ground- ing Procedure on page 20.
WARNING
Pressurized Equipment Hazard
To reduce the risk of injury, follow the Pres- 
sure Relief Procedure on page 20 before checking or servicing any part of the system and whenever you are instructed to relieve the pres-
sure.
Repair
•Check all possible remedies in Troubleshooting before disassembling the gun.
•Use a vise with padded jaws to prevent damage to plastic parts.
•Lubricate the power supply
•Lightly lubricate
•Only use genuine Graco parts. Do not mix or use parts from other PRO Gun models.
•Air Seal Repair Kit 244781 is available. The kit must be purchased separately. Kit parts are marked with an asterisk, for example (6*).
•Fluid Seal Repair Kit 244911 is available. The kit must be purchased separately. Kit parts are marked with a double asterisk, for example (26a**).
1.Follow the Fluid Voltage Discharge and Ground- ing Procedure on page 20.
2.Flush the gun, page 26.
3.Blow the fluid lines dry with air.
4.Relieve the pressure, page 20.
5.Disconnect the gun air and fluid lines at the isolation system.
6.Remove the gun from the worksite. Repair area must be clean.
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