13
D10-991-2400B
D/G-10 Service (Fluid End)
4. Flush Contaminant from
Hydraulic End
(only if diaphragm has ruptured)
a. Remove oil drain cap (34) and allow all oil and contaminate
to drain out.
b. Fill reservoir with kerosene or solvent, manually turn pump
shaft to circulate kerosene, and drain.
CAUTION: If you have EPDM diaphragms, or if food
grade oil is in the reservoir, do not use kerosene or
solvents. Instead, flush with the same lubricant that is
in the reservoir. Pumps with EPDM diaphragms have an
“E” as the 7th digit of the Model No.
c. Repeat flushing procedure (step b).
d. Fill reservoir with fresh oil, manually turn pump shaft to
circulate oil, and drain once again.
e. Refill reservoir. If oil appears milky, there is still contaminate
in reservoir. Repeat flushing procedure until oil appears
clean.
5A. Prime Hydraulic Cells on
Standard Pumps
a. With pump horizontal, and fluid-end head removed, fill
reservoir with correct Hydra-oil for application. Have catch
basin for oil that leaks from behind diaphragms when priming.
Catch oil and dispose of it properly; do not reuse it.
b. All air in oil within hydraulic cell (behind diaphragms) must
be forced out by turning shaft (which pumps piston). Shaft
rotator is included in Wanner Tool Kit. Turn shaft until bubble-
free flow of oil comes from behind all diaphragms. Watch
oil level in reservoir; if it gets too low during priming, air will
be drawn into pistons (inside hydraulic end) and will cause
pump to run rough.
c. Wipe excess oil from cylinder casting (24) and diaphragms (20).
d. Ensure that oil is 1 inch (25 mm) from top of fill port.
e. Replace oil fill cap (27).
5B. Priming Hydraulic Cells for
Kel-Cell Pumps
NOTE: Providing oil prime to Kel-Cell fitted pumps
requires pressure be applied to the diaphragms. This can
be done manually, with the system head pressure, or with
pressurized air if available. Review all methods below to
determine the procedure most suitable.
Method #1 (system head pressure less than 2
psi)
a. Install valve plate (16) but without outlet valves installed (or
else remove outlet valves; leave seats installed) on cylinder
housing. Tighten two socket-head screws (41).
b. Fill reservoir with correct Hydra-oil to fill port.
c. With blunt pointer (eraser end of pencil), reach in through
each outlet valve port and push follower-diaphragm
backwards. Note air bubbles coming out at oil fill port. Now
turn shaft about 1/2 turn.
d. Repeat depressing diaphragms and rotating shaft
(approximately 4-6 times) until no more air bubbles escape
and oil has dropped about 1 inch (25 mm) from top of fill
port. Hydraulic cells are now primed. Replace oil fill cap.
e. Install outlet valve assemblies in each outlet valve port. See
Parts Manual for correct assembly order. You may have to
tip pump (head upward) in order to keep valve centered on
seat and allow retainer to fit all way into port flush.
f. Install manifold (6) and complete installation.
Alternative Method #1:
With pump horizontal, and fluid-end head removed, fill reservoir
with correct Hydra-oil for application. Have catch basin for oil
that leaks from behind diaphragms when priming. Catch oil and
dispose of it properly; do not reuse it.
a. All air in oil within hydraulic piston behind diaphragms must
be forced out by turning shaft (which pumps piston). Shaft
rotator is included in the Hydra-Cell Tool Kit. Keep pressure
on diaphragms while turning shaft until bubble-free flow of
oil comes from behind all diaphragms. Maintain oil level in
reservoir. Do not allow oil level to be lower than reservoir.
b. Quickly attach loaded valve plate (16) (before oil runs out
past diaphragms) with socket head screws (41), but do not
tighten completely. Leave gap between valve plate and
cylinder housing. Turn shaft 2-3 turns to finish forcing out
air behind diaphragms. Hydraulic cells are now primed. Now
finish tightening valve plate with two socket head screws and
add pump manifold.
c. Wipe excess oil from around pump head.
d. Check that oil level is 1 inch (25 mm) from top of fill port.
e. Replace oil fill cap and complete installation.
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