| How often should oil seals be replaced? |
| Oil seals are generally replaced when bearings or other crankcase work
is done. Bearings typically last 10 years or more with regular oil changes.
Visual inspection of the oil seals [both crankcase and crankshaft] should
be done each time a seal servicing [Lo-Pressure and Hi-Pressure] is done
to prevent unexpected failures. If seal servicing is not done frequently
enough, pumped liquid could travel back along the plunger rod to the
crankcase oil seal and eventually enter the crankcase. Once the liquid
is in the crankcase, the oil seals should be replaced. The oil seals are
replaced from the drive-end [crankcase] of the pump and should be done
by a trained service center. |
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| What is the life of the seals for a Cat Pump®? |
| Although Cat Pumps® use a special spring reinforced seal design and a
unique blend of material that typically provides 3-4 times longer seal life than other competitive pump seals, seals and valves are still considered wear items and must be periodically replaced. Each system will offer slightly different seal life. Factors that will affect seal and valve life include: duty-cycle, liquid being pumped, liquid temperature, recycled liquids, how well the system was initially set up, by-pass conditions and maintenance cycles. It is most important to establish a regular maintenance cycle and not wait until the pump is leaking or stops running
to do maintenance. Running a pump with severely worn seals or valves accelerates the wear to other components. This could result in
a very expensive repair or even pump replacement. In a new installation, check your seals and valves after 1500 hours. If no wear is seen, check again after each 500 hour interval and at the first sign of wear, that will become your maintenance cycle. |
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