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Repair
309298J 35
Repair
Prepare the Gun for Service
• 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 o-ring (12a), some fluid
needle parts (8), and certain fluid fittings with Part
No. 116553 Dielectric Grease, as specified in the
text.
• Lightly lubricate o-rings and seals with non-silicone
grease. Order Part No. 111265 Lubricant. Do not
over-lubricate.
• Only use genuine Graco parts. Do not mix or use
parts from other PRO Gun models.
1. Flush and clean the gun, page 23.
2. Relieve the pressure, page 18.
3. Remove the gun from the manifold, page 36.
4. Remove the gun from the worksite. Repair area
must be clean.
WARNING
Electric Shock Hazard
Installing and repairing this equipment
requires access to parts that may cause
electric shock or other serious injury if the
work is not performed properly. Do not install or ser-
vice this equipment unless you are trained and quali-
fied.
WARNING
Skin Injection Hazard
To reduce the risk of a fluid injection injury,
always follow the Pressure Relief Proce-
dure on page 18 when you stop spraying,
before servicing the gun, and whenever you
are instructed to relieve the pressure.