Graco Inc 288048, 288554, 311053E General Troubleshooting, Problem Cause Solution

Troubleshooting

Troubleshooting

Check all possible remedies in the troubleshooting charts before disassembling the gun.

Some improper patterns are caused by the improper balance between air and fluid. Refer to Spray Pattern Troubleshooting, page 16.

General Troubleshooting

Problem	Cause	Solution
Fluid leakage through venting holes.	Worn o-rings or packings on needle	Replace o-rings or needle assembly.
	assembly (12).
Air leakage through venting hole.	Worn o-ring (23).	Check and replace as needed.
Air leakage from back of gun.	Worn o-rings (22, 23).	Replace o-rings.
Fluid leakage from front of gun.	Fluid needle (12) is dirty, worn, or	Clean or replace fluid needle.
	damaged
	Dirty or worn seat (10, 41).	Clean or replace the seat (10, 41)
		and gasket (11). The gasket must be
		replaced whenever you remove the
		seat from the gun.
	Spray tip seal is leaking.	Tighten nut (7) or replace spray tip
		gasket (8).
	Seat (10, 41) is insufficiently tight-	Tighten seat (10, 41) and replace
	ened or gasket (11) is missing or	gasket (11). The gasket must be
	worn from multiple uses.	replaced whenever you remove the
		seat from the gun.

14 311053E