Drive Housing - Graco 231–034 Instructions And Parts List

Drive Housing Replacement
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.
CAUTION
Do not drop the gear (51) when removing the drive
housing (67). The gear may stay engaged in the
front of the motor or the drive housing.
Do not lose the balls (9) which are located at each
end of the gear (51). Do not drop the balls between
the gears. The balls, which are heavily covered
with grease, usually stay in place, but could be dis-
lodged. If the balls fall into the gears and are not
removed, the balls will seriously damage the drive
housing. If the balls are not in place, the bearings
will wear prematurely.
1. Relieve the pressure.
2. Remove the cover (49) and the shield (59). Unclip
the drain hose (99) from the pump.
3. Remove the four screws (25).
E
69
23
25
49
99
Fig. 24
67a
51
67b
67
20
26
4. Tap the lower–rear portion of the bearing housing
(69) with a plastic mallet to loosen the bearing
housing from the drive housing (67). Pull the
bearing housing and the connecting rod straight off
of the drive housing.
5. Remove the two screws (26).
6. Remove the two lower screws (13) and then
remove the two upper screws (16) from the motor.
7. Tap the drive housing with a plastic mallet to
loosen the drive housing from the motor (73). Pull
the drive housing straight off of the motor.
8. Apply grease to the gear (51) until the area con-
tains a total of 4 ounces (112 grams) of grease.
The grease is supplied with the drive–housing
replacement kit. Be sure the balls (9) are in place.
9. Place the bronze-colored washer (67b) and then
the silver-colored washer (67a) on the shaft which
protrudes from the big gear in the drive housing
(67).
10. Align the gears and push the new drive housing
straight on to the front of the motor and the locat-
ing pins.
11. Continue to reassemble the sprayer.
34
16
20
R
9
9
Apply grease to the gear until the area contains
a total of 4 ounces (112 grams) of grease.
Torque the screw to 175 in–lb (19 N.m).
59
13
20