Graco ULTRA PLUS+ 1500 Instruction Manual page 19

Motor
INJECTION
HAZARD
To
reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
A
CAUTION
To
avoid damage to the drive housing:
Do not drop the gear cluster ( 9 ) , which may
stay engaged in the motor bell or
in the drive
housing.
Do not lose the thrust balls
( 1 0 )
or drop them
between gears. The balls usually stay in the
shaft recesses, but could be dislodged. If the
balls are not in place, the bearings will wear
prematurely.
1.
Remove the motor shield
(14).
Remove the front
cover
( 3 1 ) .
Disconnect the hose
(47).
2. Remove the pressure control cover
( 3 6 ) .
Discon-
nect the four motor leads.
3 .
Unscrew the connector
(54)
from the pressure
control. Pull the wires through the connector.
4.
Unscrew
the
connector
(54)
from the motor and
remove the conduit (22).
5. Remove the screws
(51)
from the recess of the
drive housing.
6. Remove the screws (21 and
30)
from the the mo-
tor end bell (F).
Fig.
7. Use a plastic mallet to tap the displacement pump
from the motor end bell
(F). Pull off the drive
(39) from the rear
to
loosen the drive housing (18)
housing.
8.
Remove the screws (37) holding the motor to the
frame. Lift off the motor.
9. Mount the new motor on the frame.
10. Slide a connector (54) over the conduit (22) of the
new motor and screw two or three threads of it
into the motor. Tighten the locknut
(44)
up to the
motor.
gear (G) and pack all bearings in the motor end
bell.
Be
sure the thrust balls
(IO)
are in place.
housing.)
(One ball is included with a replacement drive
12. Place the bronze-colored washer (18b) and THEN
the silver-colored washer (18a) on the shaft pro-
truding from the'big gear in the drive housing
13.
Align the gears and push the drive housing
(18)
14.
Continue to reassemble the sprayer.
11. Liberally grease the gear cluster
(9)
and pinion
(18).
straight onto the motor bell
(F)
and locating pins.