FMC Corporation - Talstar FMC L06 - Manual (Page 26)

Doc No: OMM50000903
Rev: B Page 26 of 65
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10. Inspect all parts for damage or
unusual wear. Insure that the
interior surface of the cylinder (39) is
smooth and free of cracks or
grooves. New piston cups (40) will
fail prematurely if installed in liners
with damaged bores. FMC strongly
recommends that all three piston
cups be replaced, not just those that
show signs of leakage, whenever
this type of service is performed.
This will maximize operational time
between service intervals.
11. Reverse steps 3 through 10 to
rebuild the pump after worn or
damaged components have been
replaced. FMC recommends that all
seals and gaskets that are disturbed
during the service procedures be
replaced. This includes the rod seal
o-ring (45) that is located on the
piston/crosshead rod (shown)
directly behind the piston assembly.
Some pump models have the o-ring
in a groove in the piston holder
instead of a separate seal holder.
Lubricate the piston cups and piston
rods during assembly.
12. Tighten all fasteners to the values specified in Fastener Torque Requirements,
Section 11.0 of this manual.