Goulds Pumps 3610 - IOM - Manual (Page 71)

Maintenance
Shaft straightness check
NOTICE:Do not use shaft centers for the runout check as they may have been damaged during
the removal of the bearings or impeller.
Shaft surface check
Check the shaft surface for damage. Replace the shaft if it is damaged beyond reasonable
repair.
Rotor
Allowable runouts of the fully assembled rotor are listed in the Shaft and rotor runout
requirements table.
Table 1: Shaft and rotor runout requirements
Characteristic Requirement
Flexibility factor, L 4 /D 2 >1.9x10 9 mm
(3.0x10 6 in.)
Allowable shaft runout, TIR 25 µm
(0.0010 in.)
Component fit to shaft Clearance
Allowable rotor radial runout, TIR* 75 μm
(0.0030 in.)
*Total indicated runout of impeller hubs and sleeves
Figure 17: Fully assembled rotor
Bearings inspection
Condition of bearings
Do not reuse bearings. The condition of the bearings provides useful information on operating
conditions in the bearing frame.
Installation, Operation, and Maintenance Manual 69