Graco EM 490 Instructions-Parts List Manual page 17

REMOVING
and REPLACING ELECTRIC MOTOR
grounding screw (301) and the black motor lead from
Disconnect the green and yellow motor lead from the
the toggle switch (316).
the Pressure Relief Procedure Warning on Unscrew the connector
(130 and 303) nuts on both ends
of the conduit (1). Remove the screws (71, nuts (31 and
lockwashers (4).
See
Fig
20.
Remove the motor from
union (10) at the displacement pump. See Fig 14.
Disconnect the hose
( 5 2 ) from the nipple or swivel the frame while carefully guiding the wires through the
connector
l 3 0 3 ) in
control box. Remove the conduit (1)
Remove the drive assembly as described on page 19.
You can leave the pump, connecting rod and bearing
from wires.
assembled to the drive assembly.
from the motor, being careful to avoid twisting the
Loosen the locknut and unscrew the connector (130)
Drive out the pin (27) and remove the gear
(37). See Fig wires. Install the new motor in the reverse order
of
15. Remove the screws (25) and cover 141) from the removal.
pressure control ( 5 0 ) . See Fig 15. Disconnect the red,
pink and brown motor leads from circuit board (23).
A circuit board ( 2 3 ) is included with a new motor. See
grounding screw (301) and the black motor lead from
Disconnect the green and yellow motor lead from the page
21 for installation.
the toggle switch
(316).
41
f i
Fig 16
25
1
307-735 17