ITT Goulds Pumps 3700, Installation, Operation And Maintenance Manual

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Shaft inspection
Check the shaft surface for damage, especially in areas indicated by the arrows in the following figure.
Replace the shaft if it is damaged beyond reasonable repair.
Figure 52: Shaft inspection
6.5.4 Bearings inspection
Condition of bearings
Do not reuse bearings. The condition of the bearings provides useful information on operating conditions
in the bearing frame.
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.
Replacement bearings
Table 7: 3700 bearings based on SKF / MRC designations
Replacement bearings must be the same as, or equivalent to, those listed in this table.
Group Radial (inboard) Thrust (outboard)
SA 6210 C3 7310 BEGAM
MA 6211 C3 7311 BEGAM
SX 6212 C3 7312 BEGAM
MX, LA 6213 C3 7312 BEGAM
LX, XLA 6215 C3 7313 BEGAM
XLX 6218 C3 7317 BEGAM
XXL 6215 C3 7318 BEGAM
6.5.5 Wear rings inspection and replacement (Not applicable for
3703/3700LF/3700LFI)
Wear ring types
All units are equipped with casing, impeller, and seal-chamber cover wear rings. When clearances be-
tween the rings become excessive, hydraulic performance decreases substantially.
6.5 Preassembly inspections
Model 3700, 3703, 3710, 3700LF, 3700LFI API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Instal-
lation, Operation, and Maintenance Manual 81