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