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REPAIR
Drive Housing
WARNING
To reduce the risk of serious bodily injury, including
fluid injection, splashing fluid in the eyes or on the
skin, or injury from moving parts, always follow the
Pressure Relief Procedure Warning on page 17
before repairing any part of the sprayer. Discon-
nect the spark plug cable.
NOTE: Refer to Fig 24-1 for this procedure.
1. Remove the front cover and screws
(23,68).
2. Disconnect the pump outlet hose (59) from the dis-
placement pump nipple (57).
3. Use a hex key wrench to remove the two screws (1
0)
and lockwashers
(11)
from the bottom front of the
pinion housing (19m). Then remove the top
two
screws (10) and lockwashers (11).
4. Working from the front of the drive housing, remove
the two screws (73) and lockwashers (74).
5. Lightly tap around the drive housing with a plastic
6.
While holding the connecting rod (22) with one hand,
lightly tap the back of the bearing housing (21) to
loosen the drive housing. Then
pull the drive housing
straight off the pinion housing.
mallet to loosen it from the pinion housing.
Fig
24-1
DO NOT allow the gear cluster (1
8)
to fall when re-
moving the drive housing (20). It is easily damaged
drive housing or pinion housing.
if dropped. The gear may stay engaged
in either the
DO NOT lose the thrust balls (20c or 19h) located
at
each end of the gear cluster, 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.
7. Liberally apply bearing grease (20d, supplied) to the
gear cluster (18). Check to be sure the thrust balls
(20c and 19h) are in place.
8.
Place the bronze-colored washer (20a) and then the
silver-colored washer (20b) on the shaft protruding
from the big bearing of the drive housing (20). Align
the gears and push the new drive housing straight
onto the pinion housing and locating pins.
9. Starling at Step 4 and working backwards, continue
to
reassemble the sprayer. Or, move ahead
to
the
next section in this manual if further service is
needed.
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