User's Manual

11308-674
Service
Reconnecting the Displacement Pump
CAUTION
Be sure to support the displacement pump while it is
being disconnected, to prevent it from falling and
causing injury or property damage. Do this by se -
curely bracing the pump, or by having one person
hold it while another disconnects it.
1. Hand–tighten the locking nut (4) on the displace -
ment pump (102).
2. Place the lower tie plate (3) above the locking nut
(4). T ighten the locking nut against the lower tie
plate. T orque to 140–150 ft-lb (190–203 N m).
3.
Have one person hold the displacement pump
while another connects it to the motor (see the
CAUTION above). With two adjustable wrenches,
use one to prevent the coupler (6) from turning,
and the other to firmly attatch the displacement rod
(105). See Fig. 3.
4. Attach the displacement pump to the hydraulic
motor by inserting the three bolts (1) through the
upper tie plate (103) , tie rods (2), and the lower tie
plate (3). T orque to 20–30 ft-lb (27–40 N m).
5.
Reconnect all hoses.
6. Fill the packing nut (106) with Graco Throat Seal
Liquid, or compatible solvent. See Fig. 4.
7. T urn on the power supply . Open the hydraulic
return line valve first , then the supply line valve.
Run the pump slowly to ensure proper operation.
WARNING
T o reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 7.
8. Before returning the pump to production, relieve
the pressure and tighten the packing nut just
enough to prevent leakage, but no tighter .
Fig. 4
106
06188