Graco A Series Instructions-Parts List Manual page 26

WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 9.
1. Relieve pressure.
2. Try to stop the pump with the piston rod (107) in its
lowest position. To lower the piston rod manually,
rotate the motor fan blades. Use a screwdriver to
push the retaining spring (18) up and push out the
pin (17). See Fig. 26.
3. Remove the screws (56) and lower the junction
box (59). Disconnect the motor wires and the
pressure control wire (A) from the motor start
board. Refer to Fig. 27 on page 27.
4. Remove the drive housing cover (13).
5. Remove the pressure control (69) while guiding the
harness (A) through the motor.
DETAIL
107
Fig. 26
Motor
Torque to
A
9 N.m
19,6
64
01074
6
19
A
13
31
34 (x 3)
6. Turn the displacement pump rod (107) so the pin
hole aligns with the bottom drive housing screw
(19). See the DETAIL below. Remove the three
drive housing screws and lockwashers (19,6).
7. Remove the two motor screws and lockwashers
(5,6).
8. Tap the lower rear of the drive housing (11) with a
plastic mallet to loosen the motor. Pull the drive
housing straight off the motor. Do not allow the
gear (16) to fall. Read the CAUTION on page 28.
9. Remove the two screws (46) and lift the motor off
the base (66).
10. Align the new motor with the base and reinstall
the screws.
11. Assemble the drive housing to the motor. Follow
Steps 8 to 10 on page 28.
12. Connect the wires in the junction box. Refer to Fig.
27 on page 27. Install the junction box.
13. Reconnect the piston rod (107) to the drive hous-
ing; see page 23, Installing the Pump, Step 2 and
the Warning that follows the step.
C
B
4a
12b
16
12
11a
12a
11
4
5
A
6
46
59
56
03180