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Gun Repair
312900C 27
Gun Repair
Prepare the Gun for Repair
• Check all possible remedies in Gun Operation
Troubleshooting before disassembling the gun.
• Use a vise with padded jaws to prevent damage to
plastic parts.
• Lubricate the power supply seal (18a), some pack-
ing rod parts (26), and certain fluid fittings with
dielectric grease (40), 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.
• 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 (5†).
1. Flush the gun, page 18.
2. Relieve the pressure, page 19.
3. Disconnect the gun air and fluid lines.
4. Remove the gun from the worksite. Repair area
must be clean.
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 service this equipment unless you are trained
and qualified.
Pressurized Equipment Hazard
• To reduce the risk of injury, follow the Pressure
Relief procedure on page 19 before checking or
servicing any part of the system and whenever you
are instructed to relieve the pressure.