Bearing Disassembly - Flowserve IJ Installation Operation & Maintenance

IJ PUMP OPERATION AND MAINTENANCE MANUAL
6. Remove spider and lube-oil-pump-to-end-plate gasket. If necessary to remove a
half-coupling, remove setscrew, slide half-coupling from shaft, and remove its key.

6.4.3 BEARING DISASSEMBLY

1. Remove any optional equipment, wiring, or piping obstructing removal of either bearing
housing. This may include temperature detectors, vibration probes, a tachometer generator, an
overspeed trip, etc. Tag wires, pipe ends, and their connection points for ease of reassembly.
Before removal of bearings preparatory to removal of the
seal unit, it is essential to engage plate-to-sleeve retainers
with the shaft sleeve. If they are left unengaged, the seal
springs will expand and the shaft sleeve will move inboard to
where the seal plate would prevent access to the sleeve,
necessitating the removal of pieces rather than the intact
seal unit.
2. If cartridge type mechanical seals are furnished, lock seal plates and shaft sleeves together.
See seal manufacturer's instructions in the APPENDIX.
3. Move deflector rings (7) or Inproseal rotors (385) (if installed) away from bearing housings.
Deflector rings or rotors are held in position by either set screws or O-ring friction. Loosen
setscrews, if furnished, and pry deflector rings or rotors away with a screwdriver.
If the stationary oil baffles are solid rings, then do not
attempt to remove them until the bottom halves of the
bearing housings have been removed.
4. Remove the thrust bearing housing end cover (61), stationary oil baffle or Inproseal stator
(385) (if installed), and outer retaining plate (if applicable).
5. Remove top halves of bearing housings (13 and 62).
6. Remove top halves of journal bearings (51 and 63). Check diametrical clearances between
journal bearings and shaft as follows:
a. Place Plastigage strips or lead wire at several locations on the shaft in the journal area.
b. Reinstall the top halves of journal bearings (51 and 63) and top halves of bearing
housings (13 and 62). Bolt top halves of bearing housings tightly to bottom halves.
c. Remove the top halves of the bearing housings (13 and 62) and journal bearings (51 and
63).
d. If Plastigage was used, compare the width of the crushed strips with the supplied
comparator to obtain the bearing clearance. If lead wire was used, then remove crushed
wire and measure thickness with a micrometer to determine bearing clearance.
e. Compare clearance obtained in step d. above with clearances specified in OPERATING
SPECIFICATIONS to determine if bearing replacement is necessary.
7. If the sensor disk is located on the end of the shaft, remove the sensor disk (282).
BO2660-01
NOTE
NOTE
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