Servicing the crankcase
The only service required for the HyPlex Prime crank
-
case is to maintain adequate levels of clean oil and to re
-
place worn piston rod seal assemblies.
Rebuilding the crankcase is not recommended.
Lubricating the pump
Use of
Shell Morlina 100 Hydraulic Oil (ISO 100) is rec
-
ommended, but other manufacturer's equivalents can be
used.
When operating the pump in an environment with an
ambient temperature greater than 86°F (30°C) a heavier
oil is recommended to be used. Contact Flow Technical
Services for additional information.
Maintain oil level between the high and low level marks
on the dipstick inserted through the crankcase cover.
•
Check oil levels regularly
•
Change the oil every Dynamic Seal kit interval
•
Change oil immediately if water droplets are found
on the dipstick
Crankcase replacement parts
Part number Qty. Description
015445-1 3 Piston rod seal carrier
assembly
A-0275-036 3 Seal carrier o-ring
A-12498 1 Gasket
Replacing the piston rod seal assembly
The piston rod seal assembly contains three oil seals in
-
stalled in seal carrier and an o-ring on the outer diame
-
ter. The oil seals cannot be replaced individually; the
entire assembly must be replaced.
To access and replace the seal assembly, the subplate
must be removed
Use the assembly thimble (015624-1) on the end of the
crosshead adapter; this will expand the sealing edge as
the housing slides back to engage the crankcase bore.
Use care to ensure that the oil seal carrier (044099-1) is
oriented correctly with the OD o-ring toward the
crankcase).
FLOW recommends replacing all three piston rod seal
assemblies at the same time to prevent unexpected
down time.
© Flow International Corporation M-416 | 93
CHAPTER 4
Service
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