12 3A9322B
5. Remove four T15 torx screws (14) and
one T10 torx screw (13) to open the gun
housing. Separate the needle valve (32)
and solenoid/ trigger assembly (33) by
removing the set screw with a 1/16”
Allen wrench. Thread them apart by
hand. (See note below)
NOTE: If replacing the needle valve (32),
keep the solenoid/trigger assembly (33) for
reuse. If replacing the solenoid/trigger
assembly (33), keep the needle valve (32) for
reuse.
6. Remove the solenoid washer that was
inside the old assembly. Washer may be
stuck inside solenoid of 33 or to the
back side of 32. Place solenoid washer
on to the back side of 32.
7. Replace the new part (32 or 33) and
thread back together by hand until
bottomed out. Then back out the
thread by 1 to 1.25 revolutions. This
sets the needle stroke length.
8. Using a 1/16” Allen wrench,
hand-tighten the set screws to lock the
assembly in place.
9. Loosen the two nuts on the back plate of
the solenoid/trigger assembly (33), then
torque both nuts to 10 in-lbs to center
the assembly to the needle valve (32).
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