Drive Housing
WARNING
INJECTION HAZARD
To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pressure Relief Procedure on page 10.
NOTE: Refer to Fig. 8 for this procedure.
1.Relieve pressure.
2.Remove the bearing housing. Follow Steps 1 to 8 on page 15.
3.Remove the two screws (24) and lockwashers (29) from the drive housing (20).
4.Remove the four screws (17) and lockwashers (29) from the pinion housing (19).
5.Lightly tap around the drive housing (20) to loosen the drive housing. Pull the drive housing straight off the pinion housing. Be prepared to support the gear cluster (18), which may also come out.
CAUTION
DO NOT drop the gear cluster (18) when removing the drive housing (20). The gear cluster is easily damaged. The gear may stay locked in the drive housing or pinion housing.
DO NOT lose the thrust balls (20b or 19d) located at each end of the gear cluster, or allow them to fall between the gears. The ball, which is heavily cov- ered with grease, usually stays in the shaft re- cesses, but could be dislodged. If the balls are caught between the gears and not removed, they will seriously damage the drive housing. If the balls are not in place, the bearings will wear prematurely.
6.Liberally apply bearing grease to the gear cluster (18). A tube of grease is supplied with each re- placement gear cluster. Use a full 7 ounces (190 grams) of grease. Be sure the thrust balls (20b and 19d) are in place.
7.Place the washer (20a) on the shaft protruding from the large shaft of the drive housing (20). Align the gears and push the new drive housing straight onto the pinion housing and locating pins (B).
8.Starting at Step 4, work backwards to reassemble the sprayer. Or, move ahead to the next section in this manual if further service is needed.
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