Goulds Pumps 7200CB - IOM - Manual (Page 99)

Maintenance
1. Install the bearings (for ball bearings use a flapper wheel to make inside diameter of old
bearing a slight clearance fit) on the shaft and bolt the bearing housings (134 and 134A) to
the suction cover (182) and head (184).
2. Mount the dial indicator on the shaft (122). Rotate the shaft (122) so that the indicator rides
along the seal chamber bore for 360°.
3. If the total indicator reading exceeds 0.005 in. (0.127 mm), determine the cause and make
corrections.
It may be necessary to readjust the housing.
a) Remove the dowel pins and use the adjusting screws to bring the runout to within 0.002
in. (0.0508 mm).
b) Redowel the housings in a different location.
4. Check the seal-chamber face runout.
a) With a dial indicator mounted on the shaft, rotate the shaft so that the indicator rides
along the seal-chamber face for 360°.
b) If the total indicator reading exceeds the allowable runout as this table shows,
determine the cause and make corrections.
Seal chamber bore in inches (millimeters) Maximum allowable total indicator reading in
inches (millimeters)
5.118 (130) 0.0025 (0.0635)
5.512 (140) 0.0030 (0.0762)
6.299 (160) 0.0030 (0.0762)
6.693 (170) 0.0035 (0.0889)
7.087 (180) 0.0035 (0.0889)
5. Remove the dowel pins and unbolt the bearing housings. Discard the old ball bearings.
Assemble the radial end (ball bearing pumps)
1. Install the mechanical seal (250) on the shaft. Apply an o-ring lubricant to the inside
diameter of the seal sleeve o-ring. Torque gland nuts (355) to the values found in the
"Maximum Torque Values for Fasteners" table.
2. Install the inboard labyrinth seal (333A) into the inboard radial end cover (119A):
a) Clean the end cover with a solvent.
b) Fit the labyrinth seal (333A) into the bore of the cover (119A). Apply an o-ring lubricant
to the outside diameter of the labyrinth seal o-ring.
c) Tap the seal in with a rubber mallet.
Model 7200CB, API Type BB5 Barrel Multistage / ISO 13709 2nd Edition / API 610 11th Edition Installation, Operation, and 97
Maintenance Manual