DRIVE
HOUSING
WARNING
To
reduce the risk
of
serious bodily injury, always
follow the Pressure Rellet Procedure
Warnlng
on
page
24
before repairing the sprayer.
NOTE
Refer to Fig 31-1 for this procedure.
1.
Remove the front cover
(74).
2.
Disconnect the pump outlet hose (133).
3. Remove the four screws (81) and lockwashers
(46)
from the bearing housing
(76).
4.
Lightly tap the back of the bearing housing
(76)
with
a plastic mallet. Pull the pump, bearing housing and
connecting rod away from the drive housing as one
assembly.
5. Remove the
two
bearing housing screws
(80)
and
lockwashers
(59).
Remove the four pinion housing
screws
(67)
and lockwashers (59).
6.
Lightlytap around the drive housing
(77)
with a plastic
mallet to loosen it from the pinion housing (138~).
DO
NOT
drop
the
gear cluster
(78)
when removing
the
drive housing
(77).
The
gear cluster
is
easlly
damaged.
The
gear may stay engaged in either
the
drive housing or the pinion housing.
DO
NOT
lose
the thrust balls (77c and 138k)
lo-
which are heavily covered with grease. usually Stay
cated at each end of the gear cluster.
The
balls,
in the shafl recesses, but they could be dislodged.
If
they are caught between the gears and not re-
moved, 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 (77d, supplied) to the
gear cluster
(78).
Be sure the thrust balls (77c and
138k) are in place.
8.
Place the bronze colored washer (77a) and then the
from the big bearing of the drive houslng (77). Align
silver-colored washer (77b) on the shafl protruding
the gears and push
the
new drive housing straight
onto the pinion housing and locating pins (6).
9.
Starting at Step 5, work backwards to reassemble the
manual
if
further service is needed.
.
sprayer. Or, move ahead
to
the next section in this
Fig
31-1
W
308-105
31
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