31
DRIVE HOUSING REPLACEMENT
Before doing this procedure, follow the
Pressure
Relief Procedure Warning
on page 22 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 31–1.
1. Remove the lift handle (2). Remove the motor shield
(23).
2. Remove the four screws (48) and lockwashers (47)
from the bearing housing.
3. Lightly tap the lower rear of the bearing housing (66)
with a plastic mallet to loosen it from the drive housing
(8). Then pull the bearing housing and connecting rod
assembly straight off the drive housing.
4. Remove the two screws (49) and lockwashers (9)
from the recess of the drive housing
5. Remove the two screws (58) and lockwashers (9)
from the bottom rear of the motor front end bell (A).
6. Remove the two screws (10) and lockwashers (9)
from the upper rear of the motor front end bell (A).
7. Tap the drive housing (8) with a plastic mallet to
loosen it from the front end bell (A), then pull it straight
off.
CAUTION
DO NOT allow the gear cluster (51) to fall when re-
moving the drive housing (8). 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 (8a, 13h) located at
each end of the gear cluster (51) or allow them to fall
between 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 the grease supplied with the drive housing
replacement kit. Check to be sure the thrust balls
(8a,13h) are in place.
NOTE:
The gears and bearings between the drive hous-
ing and the motor front end bell should contain a
total of 6 oz. of grease.
9. Place the bronze–colored washer (8b) THEN the sil-
ver–colored washer (8c) on the shaft protruding from
the big gear in the drive housing (8). 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.
10
9
Fig 31–1
55
24
48
47
8a
8b
51
13h
8c
9
23
49
66
B
9
58
LIBERALLY APPLY GREASE
8
2
69
1
5
NOTE: Pressure Control
does not have to be
removed for this
procedure.
