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Some parts in Rev. B of manual 308–807 have changed but have not yet been changed in the
instruction manual. Please note the changes below and mark them in your manual or keep this
sheet with your manual.
Series
Letter
Assembly No.
Change
All Models
B
Other Changes
Page 1:
Add: For use with fluids of viscosity less than 150,000 cps.
Before the Service Section: Add the following Troubleshooting Chart:
PROBLEM
When using a small orifice wand
(approximately .040 in. diameter),
1/4 to 3/4 in. of material continues
to flow from the outlet of the
wand immediately after releasing
the trigger.
Popping, snapping, spitting, gaps,
or irregularities in the material
stream as it flows from the wand.
Gun does not shutoff completely.
All written and visual data contained in this document reflects the latest product information available at the
time of publication. Graco reserves the right to make changes at any time without notice.
Parts Change Notice
Part That
Ref
Changed
No.
Part Description
114–330
3
Trigger
CAUSE
Air is trapped in the wand.
Air in the material.
Needle is not fully seating.
Supersedes Rev. B
Description of Change
Replaced by Part No. 194–983 Trigger
SOLUTION
Purge all air from the wand.
Helpful Tip: To verify that air is
trapped in the wand, trigger the gun,
then quickly shut off the material sup-
ply, relieve pressure in the gun, and
promptly remove the gun from the
supply hose. Then, without triggering
the gun, lay it on a bench and ob-
serve if material continues to flow
very slowly from the outlet of the
wand (approximately 0.1 in. per min-
ute from a .050 in. orifice). If this oc-
curs, there is air trapped in the wand.
Dispense material from the gun/wand
until the popping, snapping, and spit-
ting has stopped and the bead/extru-
sion is smooth and uninterrupted.
Readjust the trigger as described in
steps 6 and 7 under Reassembly, on
page 6 of your manual.
July 8, 1999
3X8–807
Rev. C
308-807
13
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