Finish Thompson PFM/PFP/PFV Vapor Seal and Bearing Replacement - Manual (Page 6)

Simply thread shaft onto new bearing assembly
(turn clockwise).
Note: Hole in shaft should be opposite from bearing.
R R e e a a s s s s e e m m b b l l i i n n g g t t h h e e p p u u m m p p
Shaft/bearing assembly must be carefully inserted
through the center of the vapor seal.
Carefully pull the shaft straight through the
vapor seal until the bearings begin to enter
the pump head.