General Troubleshooting, Problem Cause Solution

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 22.

General Troubleshooting

Problem	Cause	Solution


Fluid leakage through venting holes.	Worn packing (17) or needle (5).	Replace packing or needle.

Air leakage through venting hole.	Worn o-ring (9) or gasket (15).	Check and replace parts as needed.

Air leakage from back of gun.	Worn o-rings (8, 9).	Replace o-rings.

Air does not trigger.	Piston stem is disconnected from	Replace piston assembly.
	main body of piston assembly (3).
	Cylinder air pressure is too low.	Increase cylinder air pressure to 50
		psi.

Air does not shut off.	Piston assembly not seating properly.	Clean/service piston assembly.
		Replace worn or swollen o-rings.
	Broken return spring (7).	Replace return spring.
	Swollen o-ring (8).	Replace o-rings.
	Worn piston stem o-rings (10, 11).	Replace o-rings.
	Bottom gasket (12) failed.	Replace gasket.

Fluid leakage from front of gun.	Fluid needle tip (5a) is dirty, worn, or	Clean or replace fluid needle tip or
	damaged.	entire needle (5).
	Dirty or worn nozzle (23).	Clean or replace nozzle.

Fluid is present at air cap holes.	Nozzle (23) is insufficiently tightened	Tighten or replace o-ring.
	or sealing o-ring (36) is damaged.

311051F