Technical data

DRIVE HOUSING REPLACEMENT (See Fig 22) <;p.::z:, >: ;l,.
.
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Before doing this procedure, follow the Pressure
>
Relief Procedure Warning on page 13 to reduce
the risk of an injection injury, injury from movrng
parts or electric shock. Unplug the sprayer1
NOTE:
Stop the sprayer at the bottom of its stroke
to get the crank (E) in its lowest position. To
lower it manually, carefully rotate the blades
of the fan with a screwdriver.
1.
2.
3.
4.
5.
6.
Remove the front cover and screws (31,321.
Disconnect the pump outlet hose (47) from the
displacement pump outlet nipple (48).
Use a 3/W” hex key wrench to remove the four
screws (33) and lockwashers (49) from the bearing
housing.
Lightly tap the lower rear of the bearing housing
(27) with a plastic mallet to loosen it from the drive
housing. Then pull the bearing housing and con-
necting rod assembly straight off the drive housing.
Use a l/4” hex key wrench to remove the two
screws (51) and lockwashers (83) from the recess of
the drive housing and the two screws (211 and
lockwashers (83) from the rear of the motor front
end bell (lb).
Lightly tap the drive housing with a plastic mallet to
loosen it from the front end bell, then pull it straight
Off.
CAUTION
DO NOT allow the gear cluster (9) to fall when
removing the drive housing (2). It is easily damag-
ed if dropped. The gear may stay engaged in
either the front end bell or the drive housing.
DO NOT lose the thrust balls (10) located at each
end of the gear cluster (91 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
bearings will wear prematurely.
7. Liberally apply bearing grease to the gear cluster
(9). Check to be sure the thrust balls (10) are in
place.
8.
Place the bronze-colored washer W. i and then the
silver-colored washer (18al on the shaft protruding
from the big gear in the drive housing (181. Align
the gears and push the new drive housing straight
onto the front end bell and locating pins.
9. Starting at Step 5 and working backwards, con-
tinue to reassemble the sprayer.
Fig 22
820-047 29