Check out CJ101 Multi-Stage Centrifugal Pumps on F & W's website.
A Flint and Walling CJ101D203 pump is a multi-stage centrifugal pump that can be used for various applications such as booster service, water circulation, liquid transfer, cooling systems, and more. If using on a well, its designed for shallow wells with suction lifts to surface of water down to 25′. It has the following features and specifications.
Which impellers do I choose, brass or plastic?
Brass impellers are preferred over plastic impellers in water pumps because they have a higher tensile strength and more elasticity than plastic, making them more resistant to braking, especially with chemicals typically found in well water. It is important to note that most OEM water pumps have plastic impellers and in a well-maintained system should not have any issues.
NOTE: A brass impeller costs many times as much as a plastic impeller to replace. You may want to review parts cost before you choose. CJ101 Replacement Parts
For handyman talents. It’s best to have a parts breakdown picture handy for a reference. This pump has only 4 through bolts holding it together. Sometimes, after being together for a long time, the parts get stuck together. The suction flange "refer to parts breakdown picture" may need to be separated with a putty knife, but after its free, you must first remove the impeller before proceeding. (lock the motor, where it has a flat on the shaft with a wrench, where shaft protrudes from motor to pump). Unscrew the impeller the same as a nut from a bolt before removing the intermediate stage assembly "refer to parts breakdown picture". The buna rubber seal is in the mounting ring and is best to replace with the motor removed. The seal surface, in the cast iron mounting ring, must be clean before installing the new rear part of seal. Lube rubber to install the new rear seal into the mounting ring with silicone carbide facing you. Reinstall motor, clean motor shaft and lube, then lube inside of outer shaft seal. Slide outer seal on motor shaft with silicone carbon surfaces mating. Install stainless steel spring, then screw on 1st impeller. The following is best done with 2x 3/8" all thread pieces in top 2 holes to keep it aligned while reassembling. Clean gasket surfaces, install gasket required (use grease to retain in place), "square cut O-rings are in the intermediate stage, disassemble, clean cast iron O-ring groves, lube and install new square cut O-ring, then install intermediate stage. Install 2nd impeller, gasket, (3 stage have 2X intermediate stages) so prepare and repeat installing the 2nd intermediate stage. Install 3rd impeller, gasket, then install suction flange. Install 2x lower bolts, remove all thread, install 2x upper bolts, tighten bolts as required. Check that shaft turns freely. If I doesn't, try standing pump vertically, loosen bolts, make sure the motor shaft turns, and tighten bolts. Your rebuild is complete.
Still need more help? Video of rebuild for CJ101 (Approximately 1hr, 5minutes) click here
Take out 4 bolts attaching motor to pump. On the motor shaft going to pump, break apart motor and pump at the flat on shaft. Pull motor away. Reverse procedure to install replacement motor, attaching shaft to pump before installing motor retaining bolts.
Need a replacement motor or parts? - CJ101 Replacement Motors & Parts
CJ101 Performance Chart
CJ101 Performance Graph
CJ101 Instructional Manual
Flint & Walling Centrifugal Pumps Catalog - Featuring Service Plus Motors
Wire size/Distance & Breaker Chart