DeVilbiss AG361 Service Manual page 16

FLUID FAULTS
Slow fluid leak from fluid tip and
needle seat.
Major fluid leak or fluid jetting from
fluid tip and needle seat.
Slow fluid leak from needle packing,
four possible places.
AIR FAULTS
Small air leak from air cap when gun
is not triggered.
SB-E-2-642 R3.1
CAUSE
Fluid tip internal seat scored
damaged or worn.
Fluid needle external profile
damaged or worn.
Contamination on needle or tip
mating surfaces preventing good
seal.
Incorrect fluid tip for fluid needle
fitted to gun.
Sluggish needle.
Tight packing nut.
Contamination on needle or tip
mating surfaces preventing good
seal.
Incorrect fluid tip for fluid needle
fitted to gun.
Fluid needle packing worn or loose.
CAUSE
Piston contaminated and not
correctly seating.
Piston seal damaged or missing.
16/24
CORRECTION
Replace.
Replace.
Thoroughly clean.
Check tiip/needle selection chart
and fit correct item.
Lubricate packing.
Adjust.
Remove tip and needle and
thoroughly clean.
Check tiip/needle selection chart
and fit correct item.
Tighten or replace as necesarry.
CORRECTION
Remove piston and thoroughly clean
valve shaft and seating surfaces.
Replace.
EN