is flushed. In the case of long pieces or pieces bent
Open ends of pipes, tubing, hose, and fittings
to complex shapes, rust and scale can be removed
should be capped or plugged when they are to be
by pickling (cleaning metal in a chemical bath).
stored for any considerable period. Rags or waste
Parts must be degreased prior to pickling. The
must not be used for this purpose, because they
manufacturer of the parts should provide
deposit harmful lint which can cause severe
complete pickling instructions.
damage to the fluid power system.
5-21
