Goulds Pumps 3910 11th ed. - IOM - Manual (Page 51)

8. Check seal chamber cover wear ring (230) runout in
the following manner:
a. Mount dial indicator on shaft (122) as shown in
Fig. 53.
b. Rotate shaft (122) so indicator rides on seal
chamber cover wear ring (230) surface for 360
degrees. If total indicator reading exceeds 0.15
mm (.006 in.), determine cause and correct.
9. Check seal chamber face runout in the following
manner:
a. Mount dial indicator on shaft (122) as shown in
Fig. 54.
b. Rotate shaft (122) so indicator rides along the seal
chamber face for 360 degrees. If total indicator reading
is greater than the values shown in Table 7, determine
cause and correct.
Table 8
Maximum Allowable Seal Chamber Face
Runout
Group Maximum Allowable Total Indicator Reading
SA 0.045 mm (0.0018 in.)
SX 0.05 mm. (.002 in.)
MX, LA 0.06 mm. (.0024 in.)
XLX 0.07 mm. (.0028 in.)
10. Check seal chamber lock (register) runout in the
following manner:
a. Mount dial indicator on shaft (122) or shaft sleeve
(126) as shown in Fig. 55.
b. Rotate shaft (122) so indicator rides along the seal
chamber lock (register) for 360 degrees. If total
indicator reading is greater than 0.125 mm (.005
in.), determine cause and correct.
11. Install impeller key (178) in keyway of shaft (122).
Key should be at top (12 o’clock) position for
installation of impeller (101).
12. Install impeller (101) on shaft (122).
$
CAUTION
When handling impeller, wear heavy work gloves to
prevent cutting hands on sharp edges.
NOTE: Anti-galling compound should be applied to
the impeller bore to aid in assembly and disassembly.
13. Install impeller nut (304) and tighten firmly.
NOTE: Impeller nut has LEFT HAND threads.
$
CAUTION
!
The impeller and wear ring clearance setting
procedures must be followed. Improperly setting the
clearance or not following any of the proper
procedures can result in sparks, unexpected heat
generation and equipment damage.
3910-1
1th IOM 5/08
51
Fig. 54
Fig. 53
Fig. 55
6