Drive Housing - Graco 231–406, Series A Instructions-Parts List Manual

WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 8.
NOTE: See Fig 19 and parts list .
NOTE: Stop the sprayer at the bottom of its stroke to
get the crank (H) in its lowest position. To 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 (132).
3. Remove screws (33) from bearing housing (27).
4. Tap rear of pump (39) with plastic mallet to loosen
from drive housing (18). Pull bearing housing
assembly (27) straight off drive housing (18).
Torque to 300 in-lb (34 N.m)
Bronze colored washer
Apply 6 oz. bearing grease
Silver colored washer
33
31
Fig 19

Drive Housing

9
18b
18
63
51
27
49
39
132
5. Remove screws (51) from drive housing.
6. Remove screws (30, 21) from motor (1).
7. Tap drive housing (18) with plastic mallet to loosen
from motor and pull straight off.
NOTE: 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 that thrust balls
(10) are in place.
9. Place bronze-colored washer (18b) and silver-col-
ored washer (18a) on shaft protruding from big
gear in drive housing (18).
10. Align gears and push new drive housing straight
onto motor and locating pins.
11. Continue to reassemble sprayer. Torque the
screws (33) to 34 N.m (300 in–lb).
14
21
63
18a 1
10
H
30
63