Graco Viscount II, Instructions-Parts List Manual

Page: 17 / 30

Repair
3A0537G 17
Reassemble the Coupling
Adapter and Tie Rods to the
Motor
NOTE: Use this procedure only if the coupling adapter
(108) and tie rods (103) have been disassembled from
the motor, to ensure proper alignment of the motor shaft
to the piston rod.
NOTE: 3000 and 4000cc Pumps do not have a coupling
adapter (108) or a mounting plate (111).
1. 750, 1000, 1500, and 2000cc Pumps only: Loosen,
but do not remove, the screws holding the mounting
plate (111) to the motor (101). See F
IG
. 6.
2. Install the tie rods (103).
a. 750, 1000, 1500, and 2000cc Viscount I Plus
Pumps:
Screw the tie rods (103) through the
mounting plate (111) and into the threaded
holes in the base of the motor. Torque to 50-55
ft-lb (68-75 N•m).
b. 750, 1000, 1500, and 2000cc Viscount II
Pumps:
Screw the tie rods (103) into the mount-
ing plate (111) and torque to 50-55 ft-lb (68-75
N•m).
c. 3000 and 4000cc Pumps: Screw the tie rods
(103) into the base of the motor and torque to
50-55 ft-lb (68-75 N•m).
3. Fill the cavity in the bottom of the motor shaft with
grease.
4. 750, 1000, 1500, and 2000cc Pumps only: Install
the coupling adapter (108) as follows.
a. Viscount I Plus motors: Screw the coupling
adapter (108) into the motor shaft until the pin
holes align. Install the pin (107) in the first hole
from the end of the coupling.
b. Viscount II motors: Slide the adapter nut (112)
onto the adapter (108). Screw the nut (112)
onto the motor shaft (S) and torque to 75-80
ft-lb (102-109 N•m).
5. Orient the lower (102) to the motor (101). Position
the lower on the tie rods (103). Lubricate the
threads of the tie rods. Loosely screw the tie rod
locknuts (104) onto the tie rods.
6. 750, 1000, 1500, and 2000cc Pumps only: Tighten
the mounting plate screws as follows.
a. Viscount I Plus motors: Torque the screws (109)
to 15-17 ft-lb (20-23 N•m).
b. Viscount II motors: Torque the screws (109) to
50-55 ft-lb (68-75 N•m).
7. Torque the tie rod locknuts (104) to 50-55 ft-lb
(68-75 N•m).
8. Insert the collars (106) into the coupling nut (105).
a. 750, 1000, 1500, and 2000cc Pumps: Tighten
the coupling nut onto the coupling adapter (108)
and torque to 90-100 ft-lb (122-135 N•m).
b. 3000 and 4000cc Pumps: Tighten the coupling
nut onto the motor shaft (S) and torque to 150
ft-lb (203 N•m).
9. Flush and test the pump before reinstalling it in the
system. Connect hoses and flush the pump. While it
is pressurized, check for smooth operation and
leaks. Adjust or repair as necessary before reinstall-
ing in the system. Reconnect the pump ground wire
before operating.