Goulds Pumps 4550 - IOM - Manual (Page 28)

b) Turn adjusting screws (283A) clockwise
completely and jack shaft and bearing assembly
until bearing is clear.
c) Pull shaft and bearing assembly through the
pedestal.
d) Remove bearing housing snap-ring (496).
e) Slide bearing housing from thrust bearing.
f) Remove snap-ring and press bearing off shaft.
10) Remove the bearing flush line(s).
11) Remove the column-cover nuts (317W) and
disengage cover (180) from the column. Note
position of cover relative to column flange.
12) Remove cover snap-ring and slide cover sleeve
bearing (849) and pin from the cover.
13) Remove bearing holder nuts (372B) and remove
bearing holders (213) from the column. Slide the
sleeve bearing (197B) from the bearing holder.
Save all bolts, nuts, screws and miscellaneous
hardware. they are of alloy construction for
corrosion resistance.
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 Assembly (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 Spare Parts for information on
ordering spare parts.
REASSEMBLY
VERTICAL 4550 SERIES
Replace all worn or defective parts as required. Clean all
those to be reused. Reassemble in reverse order of
disassembly, with the following notes:
1. After the shaft is installed in the pedestal and column,
adjust the shaft downward, prior to installing the
impeller.
2. When the impeller (and shaft sleeve, if so provided)
is installed, be certain the threads are firmly seated
against the shaft shoulder.
3. After the impeller is installed, adjust the shaft upward
until the back of the impeller starts to touch the face
of the cover, before the casing is installed.
4. With the casing assembled, check discharge pipe and
shaft column alignment. Trim or shim thrust collar
(283A) as required.
5. Adjust impeller as outlined under “Impeller
Adjustment” in the Installation Section.
6. Check motor rotation prior to connecting and
adjusting the coupling.
7. Install coupling guard.
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4550 IOM 5/08