Goulds Pumps CV 3171 - IOM - Manual (Page 39)

CV 3171 IOM 05/11 39
INSPECTIONS
The pump parts must be inspected to the following
criteria before they are reassembled to insure the
pump will run properly. Any part not meeting the
required criteria should be replaced.
Casing and Adapter
1. The casing (100) and adapter (108A) should be
inspected for excessive wearing or pitting. They
should be replaced if they exceed:
A. Localized wear or grooving greater than
1/8” (3.2 mm) deep.
B. Pitting greater than 1/8” (3.2 mm) deep.
2. Inspect casing gasket seat surface for
irregularities.
3. Check ID of casing collar (155) per the
dimensions in Table 3. If ID is greater than
allowable, pry or pull the casing collar from its
seat on the backside of the adapter (Figure 30).
4. Check ID of the steady bearing (197) per the
dimensions in Table 3. If ID is greater than
allowable, remove the inner and outer retaining
rings (369) and seals (333H) (if applicable),
then press out the steady bearing (197) using a
small press.
5. Check bore of adapter (108A) per Table 3. If
bore is excessive, replace.
6. Inspect casing-to-column connection area for
any cracks or excessive corrosion damage.
Replace if any of these conditions exist.
Impeller
1. Inspect impeller (101) vanes for damage.
Replace if grooved deeper than 1/16” (1.6 mm)
or if worn evenly more than 1/32” (0.8 mm).
2. Inspect back pumpout vanes for damage.
Replace if worn more than 1/32” (0.8 mm).
3. Inspect leading and trailing edges of the vanes
for pitting, erosion, or corrosion damage.
Column Sections
1. Inspect column section(s) (306,192) for any
cracks or excessive corrosion damage. Replace
if any of these conditions exist.
Steady Bearing Housings
1. Check the ID of steady bearings (197) per the
dimensions in Table 3. If ID is greater than
allowable, remove the inner and outer retaining
rings (369) and seals (333H) (if applicable),
then press out the steady bearing (197) using a
small press.
2. Check bore of steady bearing housing (213) per
Table 3. If bore is excessive, replace.
Figure 31
6
Figure 30