Goulds Pumps NM 3196 i-FRAME - IOM - Manual (Page 83)

Checklist
Perform these checks when you inspect the bearings:
• Inspect the bearings for contamination and damage.
• Note any lubricant condition and residue.
• Inspect the ball bearings to see if they are loose, rough, or noisy when you rotate them.
• Investigate any bearing damage to determine the cause. If the cause is not normal wear, correct the
issue before you return the pump to service.
Bearing-housing inspection
Checklist
• Inspect the bearing-housing (134) bore according to the bearing fits and tolerances table.
• Replace the bearing housing if the dimensions exceed acceptable values. Reference: see Bearings fits
and tolerances.
• Visually inspect the bearing housing for cracks and pits.
Checklist for specific models
This table shows bearing-housing checks that are required for specific models of pump.
Frame Bearing-housing check
STi and MTi Ensure that the snap-ring groove is not cracked.
Inspection locations
The following images point to the areas to inspect on the bearing housing.
134
Figure 30: STi and MTi bearing housing
Bearing fits and tolerances
This table references the bearing fits and tolerances according to the ABEC I standard.
Table 13: Bearing fits and tolerances table
STi inches
(millimeters)
MTi inches
(millimeters)
LTi inches
(millimeters)
XLT-i, i-17 inches
(millimeters)
Shaft OD
Inboard 1.3785 (35.014)
1.3781 (35.004) 1.7722 (45.014)
1.7718 (45.004) 2.1660 (55.016)
2.1655 (55.004) 2.5597 (65.016)
2.5592 (65.004)
Clearance 0.0010 (0.025) tight
0.0001 (0.003) tight 0.0010 (0.025) tight
0.0001 (0.003) tight 0.0012 (0.030) tight
0.0001 (0.003) tight 0.0012 (0.030) tight
0.0001 (0.003) tight
Bearing ID
Inboard 1.3780 (35.001)
1.3775 (34.989) 1.7717 (45.001)
1.7712 (44.988) 2.1654 (55.001)
2.1648 (54.986) 2.5591 (65.001)
2.5585 (64.986)
Maintenance
Model NM 3196 i-FRAME Installation, Operation, and Maintenance Manual 81