- The Sherwin-Williams Company Paint Sprayer User Manual

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Drive Housing Replacement
WARNING
INJECTION HAZARD
T o reduce the risk of serious injury ,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 7.
NOTE: Stop the sprayer at the bottom of its stroke to
get the crank (H) in its lowest position. T o lower it
manually , carefully rotate the blades of the fan with a
screwdriver.
1.
Remove front cover (31). Remove motor shield
(14).
2.
Disconnect pump outlet hose (47).
3. Remove screws (33) from bearing housing.
4. Lightly tap lower rear of bearing housing (27) with a
plastic mallet to loosen it from drive housing (18). Pull
bearing housing and connecting rod assembly
straight
of f drive housing.
5. Remove screws (51) from recess of drive housing.
6. Remove screws (30 and 21) from motor bell (F).
7. Tap drive housing (18) with a plastic mallet to loosen
from motor bell, then pull straight of f.
NOTE: T
o avoid damage to the drive housing:
Do not drop the gear cluster (9), which may stay
engaged in the motor bell or in the drive housing.
Do not lose the thrust balls (10) or drop them between
gears. The balls usually stay in the shaft recesses, but
could be dislodged. If the balls are not in place, the
bearings will wear prematurely .
8.
Use approximately 6 oz. of bearing grease
supplied with drive housing replacement kit to
grease gear cluster (9). Check to be sure thrust
balls (10) are in place.
9. Place bronze–colored washer (18b) and then silver–
colored washer (18a) on shaft protruding from big
gear
in drive housing (18).
10. Align gears and push new drive housing straight
onto motor bell and locating pins.
11. Continue to reassemble sprayer . T orque screws
(33) to 300 in–lb (34 N.m).
7397A
Fig. 20
1
3
4
2
Torque to 300 in–lb (34 N.m)
Bronze color
Apply 6 ounces bearing grease to this gear
Silver color
1
31
33
27
H
18
18b
9
18a
F
21
14
30
10
51
2
3
4
47