Bearing Housing & Connecting Rod - Graco 231–034 Instructions And Parts List

Bearing Housing and Connecting Rod
Pack the roller bearing with grease.
Oil the inner surface of the bearing housing.
Torque to 175 in–lb (19 N.m).
C
68
B
23
25
49
42
43
47
76
99
Fig. 23
WARNING
To reduce the risk of a serious injury, follow the
Pressure Relief Procedure on page 4 whenever
you are instructed to relieve the pressure.
NOTE: Stop the sprayer at the bottom of its stroke to
get the crank (E) in its lowest position. To lower the
crank manually, use a screwdriver to carefully rotate
the blades of the fan.
1. Relieve the pressure.
Replacement
E
67
G
69
61
70
40
223
2. Remove the front cover (49). Disconnect the drain
hose (99) from the pump. Hold a wrench on the
intake valve (223). Unscrew the suction tube. Dis-
connect the hose (70).
3. Push up the retaining spring (42). Push out the pin
(43).
4. Loosen the locknut (47). Unscrew the pump (76).
5. Remove the four screws and lockwashers (25,23).
6. Lightly tap the lower rear of the bearing housing
(69) with a plastic mallet to loosen it from the drive
housing (67). Pull the bearing housing and the
connecting rod (68) straight off the drive housing.
7. Remove the pail hanger (61) and install it on the
new bearing housing.
8. Inspect the crank (E) for excessive wear. Lubricate
the inside of the bronze bearing (B) with a high–
quality motor oil. Pack the roller bearing (C) with a
liberal amount of bearing grease.
9. Assemble the connecting rod (68) and the bearing
housing (69).
10. Clean the mating surfaces of the bearing housing
and the drive housing (69,67).
11. Align the connecting rod (68) with the crank (E).
Align the locating pins (G) with the holes in the
bearing housing (69). Push the bearing housing
onto the drive housing or tap the bearing housing
into place with a plastic mallet.
CAUTION
Do not use the screws (25) to try to align the bear-
ing housing. The bearing housing and drive hous-
ing will not align properly, which will result in pre-
mature wear of the bearing.
12. Install the screws (25) and the lockwashers (23).
Torque the screws evenly to 175 in-lb (19 N.m).
13. Install the pump. See page 38.
14. Install the remaining parts.