Technical data
I. Disconnect the pump outlet hose (47) from the
displacement pump outlet nipple (46).
2. Remove the screws (15) and pressure control cover
(36) and disconnect the four motor leads.
3. Use an adjustable wrench to loosen the conduit
connector nut (345) at the pressure control
assembly (43).
4. Swing the conduit (22) away from the conduit
connector.
5. Pull the motor leads through the elbow, one at a
time.
CAUTION
Always pull the motor leads one at a time to avoid
loosening the terminals which could result in a bad
connection and poor sprayer performance.
\
6. Loosen the nut of the connector (54) at the motor
and pull the conduit (22) away from the motor, then
pull the leads through the conduit, one at a time.
7. Unscrew the connector elbow from the motor.
8. Pull the wires through the elbow, one at a time.
9. Remove the front cover and screws (31,321.
10. Remove the motor cover (14) and screws (64).
11. Use a l/4” hex key wrench to remove the two
screws (51 I and washers (63) from the recess of the
drive housing, and the two screws (21) and washers
;63\ from the lower rear of the motor front end bell
12. Use a plastic mallet to gently tap the displacement
pump (39) from the rear to loosen the drive housing
from the front end bell. Then pull the drive housing
away from the end bell.
CAUTION
DO NOT allow the gear cluster (9) to fall when
removing the drive housing (18). It is eesi/y
damaged if dropped. The cluster may stay engag-
ed in either the front end bell or the drive housing.
DO NOT lose the thrust balls (101 located at each
end of the gear cluster (9) or allow them to fall
between gears. The ball, which is heavily covered
with grease, usually stays in the gear recesses, but
could be dislodged. If caught between gears and
not removed, the balls will seriously damage the
drive housing. If the balls are not in place, the
bearings will wear prematurely.
13. While supporting the motor to keep the sprayer
from tipping, remove the nuts MO), lockwashers
(411, and capscrews (37) holding the motor mount-
ing plate (72) to the frame. Lift the motor assembly
off the frame.
14. Remove the mounting plate (721, four screws (79)
and lockwashers (63) from the old motor, and in-
stall them on the new motor.
CAUTION
A
Be sure to install the correct length of screw.
Longer screws will damage the motor.
15. Place the new motor assembly on the frame and
align with the frame mounting holes. Install the
screws (371, lockwashers (411, and nuts (401 tightly.
16. Liberally grease the gear cluster (9) and pinion gear
(0) and pack all bearings in the motor front end
bell. Check to be sure the thrust balls (10) are in
place.
17. Place the bronze-colored washer Mb1 and then the
silver-colored washer (Ma) on the shaft protruding
from the big gear in the drive housing (18).
18. Align the gears and push the drive housing (18)
straight onto the front end bell and locating pins.
19. Starting at Step 11 and working backwards, con-
tinue to reassemble the sprayer.
NOTE: Use a turning motion on the conduit when
feeding wires through it.
20. Reinstall the conduit seal ¬ shown) around the
wires in the conduit elbow (345) at the pressure
control to keep contaminants from entering the
pressure control.
21. Reinstall the motor cover and pressure control
cover.
30 82tI-047