Revision 1.8 / June 2016
18
Shimming for Proper Shaft Location
Proper shaft location will insure that the rotor is positioned in the center of the wet end of the pump.
Failure to position the rotor correctly may result in excessive and premature wear to the wet end parts.
Here are the steps necessary to shim your MasoSine Pump.
1. Install the bearing housing, item 700, into the power frame, item 600, and tighten the bearing
housing mounting cap screws, item 640. Install the pump housing, item 300, on the power frame
and tighten the housing mounting bolts, item 340. The mating surfaces between the parts should
be cleaned to eliminate any debris or burrs.
NOTE: Be sure that both the cap screws and bolts
are tightened to the torque specification provided on page 28.
2. Install the shaft sleeve, item 530, over the wet end of the shaft, item 200 as shown in
below. The shaft sleeve should be pushed onto the shaft until it reaches the shoulder. The mating
surfaces between the sleeve and the shaft should be cleaned to eliminate any debris or burrs.
3. Using a depth micrometer, or other tool which measures increments of 0.001", measure the
dimension from the shoulder on the shaft sleeve to the back face of the pump housing as shown in
Figure 7
.
4. Subtract the measurement which you received in step 3 from the "X" dimension listed in the chart
below for your pump model. The result will equal the amount of shim necessary to install between
the bearing housing and power frame.
NOTE: If the dimensions listed are considerably
different from your measurement, please contact MasoSine Pump Technical Services at
303-425-0800. Remove the shaft sleeve from the shaft. Loosen and remove the bearing
housing mounting cap screws. Remove the bearing housing and shaft assembly from the
power frame.
5. Remove the shaft sleeve from the shaft. Loosen and remove the bearing housing mounting cap
screws. Remove the bearing housing and shaft assembly from the power frame.
6. Install the correct thickness of shim, item 800, required to fit within the tolerance listed in the chart
below for your pump model. Place the shim over the bearing housing flange such that the holes in
the shim are lined up with the holes on the bearing housing flange.
7.
Install the bearing housing into the power frame and tighten the bearing housing mounting cap
screws.
NOTE: Be sure that the cap screws are tightened to the torque specification
provided on page 28. Verify your measurements.
Figure 7 – “X“ Dimension
