33
307–785
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 (59).
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 of
f 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
of
f.
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
59
69
R
20
13
34
LIBERALLY
APPL
Y GREASE
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