14
D10-991-2400 5/1/04
Method #2 (head pressure
greater than 2 psi)
This simple and clean method of priming the Hydra-cells
requires an inlet head pressure of at least 5 feet (1.5 m) or 2
psi (.14 bar). The pressure source is required to hold the
diaphragms back while the piston moves so as to force out the air.
Completely assemble
the pump and fill the reservoir with the
appropriate Hydra-oil to the fill port.
a. When tank head pressure is being used to prime, install
the pump back into the system and connect the tank supply
line to pump inlet. Pump discharge line may be connected
at this time, but end of line must be open to allow air to pass
out.
b. Slowly turn the pump shaft by hand and watch for bubbles
exiting the oil reservoir fill opening. This will take several
rotations; when no more bubbles come out and the reservoir
level has dropped about 1” (25 mm), the hydraulic cells are
primed.
c. Replace the oil fill cap and complete installation.
d. When compressed air is being used to prime, insert a
clean air hose to the pump inlet and restrict the pump outlet.
Turn the shaft a quarter turn and then apply air pressure
into the manifold to put pressure on the diaphragms. This
will force air out from inside the pistons and you will see
bubbles at the reservoir opening. Repeat for several
rotations until no more air bubbles come out and the reservoir
level has dropped about 1” (25 mm). The hydraulic cells are
now primed.
e. Replace the oil fill cap and complete installation.
D/G-10 Service (Fluid End)
6. Reinstall Pumping Head
MODEL D-10
NOTE: Use the bolt (29) protruding through the cylinder
casting at the 10 o-clock position to locate the valve plate
on the cylinder casting. Place the “blind hole” on the valve
plate over this bolt.
a. Reinstall the valve plate (16), with the valve assemblies
installed as outlined above, onto the cylinder casting.
Recheck that the blind hole is over the protruding bolt at the
10 o-clock position. Install the socket-head cap screws (41)
and secure the valve plate to the cylinder casting.
b. Reinstall the O-rings (7,8,9) on the rear side of the manifold.
Use petroleum jelly or lubricating gel to hold them in place.
c. Reinstall the manifold onto the valve plate. Be sure the drain
plug (3) is at the bottom of the manifold.
NOTE: on pumps with non-metallic head position
support plate (42) onto manifold with ports and bolt
holes aligned properly.
d. Insert all bolts (4), washers (5), and nuts (31). Hand tighten.
e. Reinstall the centerbolt (1) with its washer (2), and torque
to 45 ft-lbs.
f.
Alternately tighten perimeter bolts (4) until all are secure.
Torque to 45 ft-lbs.
g. Recheck all bolts for tightness.
MODEL G-10
NOTE: Use the bolt (29) protruding through the cylinder
casting at the 10 o’clock position to locate the valve plate
on the cylinder casting. Place the “blind hole” on the valve
plate over this bolt.
a. Reinstall the valve plate (16), with the valve assemblies
installed as outlined above, onto the cylinder casting.
Recheck that the blind hole is over the protruding bolt at the
10 o’clock position. Install the two socket-head cap screws
(41) and secure the valve plate to the cylinder casting.
b. Reinstall the O-rings (7,8,9) on the rear side of the manifold.
Use petroleum jelly or lubricating gel to hold them in place.
c. Reinstall the manifold onto the valve plate. Be sure the drain
plug (3) is at the bottom of the manifold.
NOTE: on pumps with non-metallic head position
support plate (42) onto manifold with ports and bolt
holes aligned properly.
d. Insert all six bolts (4) around the edge of the manifold.
Reinstall the pump centerbolt (1) with its washer (2).
e. Alternately tighten perimeter bolts (4) until all are secure.
Torque to 54 N-m.
f.
Tighten the pump centerbolt. Torque to 54 N-m.
g. Recheck all bolts for tightness.
