MECHANICAL SEAL AND BEARING ASSEMBLY REPAIR/REPLACE .
This task covers: a. Removal b. Disassembly c. Cleaning/lnspection/Repair d. Assembly e. Installation
Wrench Hex Key
Pump assembly drained
Electric hot plate (to heat bearings)
Tool kit, general mechanic's (Item 1, Appendix B)
Flexible coupling removed
Piping and vent assembly
Dry cleaning solvent (Item 30, Appendix C)
General Safety Instructions
Well ventilated area
In most instances it is not necessary to remove the pump assembly from the skid to repair or replace the
mechanical seals or bearing assemblies.
Disconnect all plumbing from mechanical seals.
Remove shaft guard (1) by removing two screws (2).
Remove four nuts (3) from stud bolts (4) and loosen drive collar setscrews.
Remove five screws (5) connecting thrust bearing housing (6) to pump (7).
Remove thrust bearing cover (8) from housing (6) by removing six screws (9).
Remove locknut (10) and safety washer (11).
Remove lubricating ring (12) and lubricating bushing (13).
Remove thrust bearing housing (6) and mechanical seal (14) from pump assembly (7).
Remove alien setscrew (15) from coupling hub (16).
Remove hub (16) from pump shaft.
Remove key (17) from pump shaft.
Remove guide bearing housing (18) and mechanical seal (19) in the same manner.