Graco 390 - Step 7: Relieve Residual Pressure; Trigger Lock Operation; Component Identification

Pressure Relief Procedure
3A5265A 3
7. If you suspect the spray tip or hose is clogged or
that pressure has not been fully relieved:
a. VERY SLOWLY loosen the tip guard retaining
nut or the hose end coupling to relieve pressure
gradually.
b. Loosen the nut or coupling completely.
c. Clear hose or tip obstruction.
Trigger Lock
Always engage the trigger lock when sprayer is
stopped to prevent the gun from being trig-
gered accidentally by hand or if dropped or
bumped.
Identify Needle and Flange Bearings in a Housing
ti24612a
ti31676a
NEEDLE BEARINGS
DRIVE
HOUSING
SIDE
MOTOR
SIDE
FLANGE BEARINGS
DRIVE
HOUSING
SIDE
MOTOR
SIDE