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21
307-863
Drive Housing
WARNING
To reduce the risk of serious bodily injury always
follow the Pressure Relief Procedure Warning on
page 2 before checking, adjusting, cleaning or
shutting down the sprayer.
NOTE: Refer to Fig. 19 for this procedure.
1.
Remove the front cover (23).
2.
Disconnect the hose (59) from the pump nipple
(57). For the upright carts only, detach the drain
hose (102) from the pump.
3.
Remove the four screws (73) and lockwashers
(74) from the bearing housing (21).
4.
Lightly tap the back of the bearing housing with a
plastic mallet. Pull the pump, bearing housing and
connecting rod away from the drive housing as
one assembly.
5.
Remove the two screws (24) and lockwashers
(11). Remove the four screws (10) and
lockwashers (11).
6.
Lightly tap around the drive housing (20) with a
plastic mallet to loosen it from the pinion housing
(19n).
CAUTION
DO NOT drop the gear cluster (18) when removing
the drive housing (20). The gear cluster is easily
damaged. The gear may stay engaged in either the
drive housing or the pinion housing.
DO NOT lose the thrust balls (20c and 19j) located
at each end of the gear cluster. The balls, which
are heavily covered with grease, usually stay in the
shaft recesses, but they could be dislodged. If they
are caught between the 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 (20d, supplied) to
the gear cluster (18). Be sure the thrust balls (20c
and 19j) are in place.
8.
Place the bronze colored washer (20a) and then
the silver–colored washer (20b) on the shaft pro-
truding from the big bearing of the drive housing
(20). Align the gears and push the new drive hous-
ing straight onto the pinion housing and locating
pins (B).
9.
Starting at Step 5, work backwards to reassemble
the sprayer. Or, move ahead to the next section in
this manual if further service is needed.
Fig. 19
10
11
19j
18
20c
11
24
68
23
22
20
20a
20b
19n
11
10
B
74
73
Torque to
175 in–lb
(20 N.m)
57
21
102
59