Flowserve RIS Seal - Manual (Page 3)

3
3 Pump Preparation
3.1 Check the condition of the bearing assembly and axial shaft
movement.
3.1.1 Check radial shaft movement with a dial indicator by forcing
the shaft up and down and observe the movement of the
dial indicator. Replace or repair bearing assembly if the
movement is greater than the manufacturer's specifications
or 0.381 mm (0.015 inch).
3.1.2 Shaft run-out should be less than 0.127 mm (0.005 inch).
Turn the shaft 360 degrees and observe the movement
of the dial indicator. See Figure 1.
Radial Shaft Movement
Figure 1
0.381 mm
(0.015 inch)
Maximum
Axial Shaft Movement
Figure 2
3.1.3 Axial shaft movement must be less than 0.381 mm
(0.015 inch). Adjust the bearing cover shim thickness
according to the manufacturer's instructions. If spring
loaded spherical thrust bearings are utilized, it may be
necessary to machine the gasket surface of the bearing
cover in lieu of adding shims. See Figure 2.
0.381 mm
(0.015 inch)
Maximum