GENERAL TROUBLESHOOTING
PROBLEM
CAUSE
REMEDY
Fluid leaking from needle
packing
Worn needle packing or needle shaft
Replace air valve & fluid needle assembly, item 5.
Loose needle packing
Tighten packing nut gradually until leak stops.
Fluid leaking from the front of
the gun
Worn or damaged needle ball
Replace air valve & fluid needle assembly, item 5.
Worn seat assembly
Replace fluid nozzle, item 9.
Fluid in air passages
Spray tip seal leaking
Tighten air cap & nozzle guard assembly, item 11 or 13.
Replace carbide tip seal. RS-5000-K5 or RS-5000-K10
Leaking around fluid seat
Tighten or replace fluid nozzle, item 9.
Fluid slow to shut off
Fluid buildup on needle assembly
Clean or replace air valve & fluid needle assembly, item 5.
No fluid output when gun is
triggered
Tip orifice is plugged
Flat tips - Turn off fluid supply. Relieve pressure into a closed
earth-grounded container. Engage trigger safety. Remove air
cap/nozzle guard assembly and spray tip. Clean or replace
the spray tip, item 12.
Twist tips – Rotate twist tip 180° within the air cap, then
spray into a closed earth-grounded container to try to clear
tip of any debris. If that fails, turn off fluid supply. Engage
trigger safety. Remove air cap/nozzle guard assembly and
spray tip. Clean or replace the twist tip, item 10.
Needle is damaged or broken
Turn off fluid supply. Relieve pressure into a closed earth-
grounded container. Engage trigger safety. Replace air valve
& fluid needle assembly, item 5.
Fluid filter is plugged
Turn off fluid supply. Relieve pressure into a closed-grounded
container. Engage trigger safety. Turn off air supply to pump
and relieve fluid pressure from pump using bypass valve on
pump. Very slowly loosen the fluid hose connection at the
gun to relieve any pressure in the hose. Remove the fluid
hose. Using two wrenches, one to hold the fluid tube in
place, and the other to remove the nut. Open the fluid filter,
and clean or replace the filter element, item 17e.
Fluid hose is plugged
Turn off fluid supply. Relieve pressure into a closed-grounded
container. Engage trigger safety. Turn off air supply to pump
and relieve fluid pressure from pump using bypass valve on
pump. Very slowly loosen the fluid hose connection at the
gun to relieve any pressure in the hose. Remove the hose
and clear obstruction, or replace hose.
Needle Packing Nut
Trigger Safety
Fluid Filter
EN
77-3130-R4 (5/2019)
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