11
SPRAY PATTERN
CONDITION
PROBLEM
SOLUTION
Fluid leakage from
packing nut
a) Packing nut loose.
b) Packing worn or dry.
a) Tighten, but not so tight as to
grip needle.
b) Replace packing or lubricate.
Dripping from fluid tip
a) Dry packing.
b) Sluggish needle.
c) Tight packing nut.
d) Worn fluid nozzle or needle.
a) Lubricate.
b) Lubricate.
c) Adjust.
d) For pressure feed, replace with
new fluid nozzle and needle.
Thin, sandy, and coarse
finish
a) Gun held too far from surface.
b) Atomization pressure set too
high.
a) Move gun closer to surface.
b) Adjust atomization pressure.
Thick, dimpled finish
resembling orange peel
Gun held too close to surface.
Move gun further away
from surface.
