Drive Housing Replacement - Graco ULTRA MAX 1095 Instructions-Parts List Manual

Drive Housing Replacement

WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 7.
CAUTION
DO NOT drop gear cluster (51) when removing drive
housing (67). Gear cluster may stay engaged in the
motor front end bell or the drive housing.
DO NOT lose thrust balls (90) located at each end of
gear cluster (51) or drop them between gears. The
balls, which are heavily covered with grease, usually
stay in the shaft recesses, but could be dislodged. If
caught between gears and not removed, the balls will
seriously damage drive housing. If the balls are not
in place, the bearings will wear prematurely.
NOTE: Read General Repair Information on page 16
before doing this procedure. See Fig. 18.
1. Relieve pressure.
2. Remove front cover (49) and motor shield (54).
Unclip drain hose (85) from pump.
3. Remove four bearing housing screws (25) and
lockwashers (23).
4. Lightly tap lower rear of bearing housing (22) with
a plastic mallet to loosen it from drive housing (67).
Pull assembled bearing housing and connecting
rod straight off drive housing.
5. Remove two drive housing screws (26) and
lockwashers (20).
6. Remove two lower screws (13) and lockwashers
(20) and then two upper screws (16) and lock-
washers (20) from front of motor (73).
7. Tap drive housing (67) with a plastic mallet to
loosen it from front of motor (73), and then pull
drive housing straight off.
8. Liberally apply approximately 4 ounces of bearing
grease to gear cluster (51). Grease is supplied
with drive housing replacement kit. Be sure thrust
balls (90) are in place.
9. Place bronze-colored washer (67b) then silver-col-
ored washer (67a) on shaft protruding from big
gear in drive housing (67).
10. Align gears and push new drive housing straight
onto front of motor and locating pins.
11. Continue reassembling sprayer.