21
18
9
10
10
33
14
F
28
16
37
39
G
30
Fig. 10
79
1
2
Seals (93) located inside conduit (22)
Apply 6 ounces bearing grease
22
1
5
31
1
2
ULTRA
MAX
1595 shown
7957A
13
308854
Motor Replacement
WARNING
ELECTRIC SHOCK HAZARD
To reduce the risk of Electric Shock: wait
5 minutes after turning sprayer off before
servicing to allow stored current to dis-
charge.
NOTE:
Refer to Fig. 10 and parts list, except as
noted.
1.
Relieve pressure
;
page 4.
2.
Remove motor shield (14). Remove front cover
(31). Disconnect hose (28) at pump. Disconnect
drain hose (79) from pump (39).
3.
Remove outlet cover on pressure control wiring
box. Disconnect four motor leads. See Fig 6.
4.
Unscrew conduit connector (16) from motor and
pull motor leads from tubing (22).
5.
Remove screws (33) from recess of drive housing.
6.
Remove screws (21 and 30) from motor bell (F).
7.
Use a plastic mallet to tap displacement pump (39)
from rear to loosen drive housing (18) from motor
bell (F). Pull off drive housing.
CAUTION
DO NOT drop gear cluster (9) when removing drive
housing (18). The gear cluster may stay engaged in
the motor front end bell or the drive housing.
DO NOT lose thrust balls (10) located at each end of
gear cluster (9) or drop them between gears. The
balls, which are heavily covered with grease, usually
stay in the shaft 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.
8.
Lower pressure control (5) by unscrewing motor
mounting screws (37).
9.
Lift off motor (1).
10. Mount and center new motor on frame and attach
pressure control (5) with motor mounting screws
(37).
11. Insert motor leads through connector (16) and
tubing (22) to pressure control. Screw connector
(125) two or three threads into motor. Tighten
locknut up to motor. Connect four motor leads.
See Fig. 6.
12. Liberally grease gear cluster (9) and pinion gear
(G) and pack all bearings in motor bell. Be sure
thrust balls (10) are in place. (One ball is included
with a replacement drive housing.)
13. Align gears and push drive housing (18) straight
onto motor bell (F) and locating pins.
14. Continue to reassemble sprayer.
