Motor - Graco 223-773 A Series Instructions And Parts List

WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 10.
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 (10) 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 (31). Disconnect the hose (47).
2. Remove the pressure control cover (36). 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).
Torque to
175 in-lb (19 N.m)
Bronze
Apply 6 oz.
bearing grease
Silver
31
32
Fig. 43

Motor

18
27
10
49
33
39
7. Use a plastic mallet to tap the displacement pump
(39) from the rear to loosen the drive housing (18)
from the motor end bell (F). Pull off the drive hous-
ing.
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.
11. Liberally grease the gear cluster (9) and pinion
gear (G) and pack all bearings in the motor end
bell. Be sure the thrust balls (10) are in place.
(One ball is included with a replacement drive
housing.)
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 (18).
13. Align the gears and push the drive housing (18)
straight onto the motor bell (F) and locating pins.
14. Continue to reassemble the sprayer.
14
64
37
21
63
F
G
18a 10
9
18b
40
41
51
63
47
54
22
54
36,15
30
63