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MAYCO C30HDZ PUMP — OPERATION AND PARTS MANUAL — REV. #12 (04/03/12) — PAGE 33
OPERATING INFORMATION
Cam Roller
If the cam roller does not ride on the cam profile smoothly, it may
be caused by insufficient line back-pressure; e.g., a wet mix with
only 50 feet of hose. Add more hose as necessary. It can also be
caused by cavitation or the passing of over-sized aggregates
through the valving, causing it to skip.
Snap-Joint
When using Snap-Joint couplings with gaskets to join hose, see
that they are washed clean after each job. Keeping the hose ends
clean (heavy duty) is very important for the best job setup. A thin
coat of grease on the rubber gasket or dipping both coupling and
gasket in water before coupling the hose will make for easier
installation.