Goulds Pumps NM3171 - IOM - Manual (Page 24)

26. Remove bearing locknut (136) and bearing
lockwasher (382).
27. Pull ball (thrust) bearing (112) off shaft (122)
using suitable bearing puller and pulling on
bearing housing (134). DO NOT hammer on
pump shaft to remove bearing.
28. Slide pump shaft (122) out of column assembly
(192) from impeller end.
29. Unscrew column pipe assembly/pump cover
screws (371W).
30. Remove pump cover (180). Be sure shaft
column assembly (192) is supported properly.
31. Remove column bearing housing (213).
Note: Pump may be supplied with
intermediate column bearing housing (213),
Remove column/column screws (372B),
column pipe assemblies (192) and
intermediate column bearing housings (213)
individually.
32. Remove column pipe assembly/protector plate
screws (371Z).
33. Remove shaft column assembly (192).
Note: Protector plate (215) should not be
removed unless it is to be replaced. To
remove protector plate, unscrew protector
plate/mounting plate screws (317X). Remove
protector plate from mounting plate (189).
INSPECTION AND PARTS REPLACEMENT
GUIDELINES
Impeller (101) - Replace if impeller shows excessive
erosion, corrosion, extreme wear or vane breakage.
O-ring groove and impeller hub must be in good
condition. Check impeller balance if possible.
Shaft (122) - Check for runout (.005" MAX) to see
that the shaft has not been bent. Shaft surface and
threads must be in good condition. Replace if
necessary.
Casing (100) - Replace if casing shows excessive
erosion, corrosion or extreme wear.
Lip Seals - upper (332) and lower (333A) - Replace
if damaged.
Vapor Seal (215A) - Replace if damaged.
Column Bearing Assembiy (213) - Assure flush
passages are clean. Check clearance. Assembly
should be replaced if diametral clearance exceeds
0.062" (1.6mm).
Flush Tubing (190) - Make sure tubing is clear and
clean.
Ball Bearing (112) - Renew at each overhaul and
when damage is obvious (through vibration, etc.).
Note: Refer to back cover for information on
ordering spare parts.
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NM 3171 IOM 5/08