Repair
3A5379B
33
Install Displacement Pump
1. Verify power is disconnected from the driver.
1. Raise the ram to install the displacement pump to
the platen.
2. Insert the displacement pump on the platen.
3. Carefully place the displacement pump on the tie
rods (DD).
4. Screw the nuts onto the tie rods (DD) and torque to
50-60 ft-lb (68-81 N•m).
5. Install the coupling (DC), and slide the coupling
cover (DB) down. Install the clip (DA).
6. Reconnect all hoses, and reconnect the ground
wire.
7. Fill the wet cup (R) 1/3 full of Graco Throat Seal Liq
-
uid or a compatible solvent.
8. Attach the platen to the displacement pump. Follow
steps to
Connect Platen
on page 34.
9. Turn the driver disconnect switch (K) ON.
10. Run the pump slowly to ensure that it is operating
properly.
Keep hands and fingers away from the priming piston
during operation and whenever the pump is pressur
-
ized to reduce the risk of injury. On the pump down
-
stroke the priming piston extends beyond the intake
housing to pull the material into the pump. The prim
-
ing piston works under extreme force. During opera
-
tion and whenever the pump is pressurized, the
priming piston can severely injure or amputate a hand
or finger, or break a tool, caught between it and the
intake housing. Always relieve the pressure before
checking, clearing, cleaning, flushing, or servicing any
part of the pump.
Be sure to use at least two people when lifting, mov
-
ing, or disconnecting the pump. This pump is too
heavy for one person. If you are disconnecting the
displacement pump from a motor that is still mounted
(for example, on a ram), be sure to support the dis
-
placement pump while it is being disconnected, to
prevent it from falling and causing injury or property
damage. Do this by securely bracing the displace
-
ment pump, or by having at least two people hold it
while another disconnects it.
F
IG
. 43:
F
IG
. 44:
ti10511a
DD
ti10509a
DC
DB
DA
DA
DB
DB
DA
DC