33
307–786
DRIVE HOUSING REPLACEMENT
Before doing this procedure, follow the
Pressure
Relief Procedure Warning
on page 24 to reduce
the risk of a fluid injection injury , splashing in the
eyes or in the skin, injury from moving parts or elec-
tric shock.
Unplug the sprayer!
WARNING
Refer to Fig 33–1.
1. Remove the front cover (49). Remove the motor
shield (56).
2. Remove the four screws (25) and lockwashers (23)
from the bearing housing.
3. Lightly tap the lower rear of the bearing housing (69)
with a plastic mallet to loosen it from the drive hous-
ing (67). Then pull the bearing housing and connect-
ing rod assembly straight off the drive housing.
4. Remove the two screws (26) and lockwashers (20)
from the recess of the drive housing
5. Remove the two screws (13) and lockwashers (20)
from the rear of the motor front end bell (R)
6. Remove the two screws (16) and lockwashers (20)
from the upper rear of the motor front end bell (R).
7. Tap the drive housing (67) with a plastic mallet to
loosen it from the front end bell (R), then pull it
straight off.
CAUTION
DO NOT allow the gear cluster (51) to fall when re-
moving the drive housing (67). It is easily damaged
if dropped. The gear may stay engaged in either the
front end bell or the drive housing.
DO NOT lose the thrust balls (9) located at each
end of the gear cluster (51) or allow them to fall be-
tween gears. The ball, which is heavily covered with
grease, usually stays 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 bear-
ings will wear prematurely.
8. Liberally apply bearing grease to the gear cluster
(51). Use approximately 6 oz. of the grease supplied
with the drive housing replacement kit.Check to be
sure the thrust balls (9) are in place.
9. Place the bronze–colored washer (67b) THEN the
silver–colored washer (67a) on the shaft protruding
from the big gear in the drive housing (67). Align the
gears and push the new drive housing straight onto
the front end bell and locating pins.
10. Starting at Step 7 and working backwards, continue
to reassemble the sprayer.
16
20
Fig 33–1
49
24
25
23
E
67
67b
51
67a
9
9
34
26
20
56
69
20
13
34
R
