6.1.7 Labyrinth Seals
Labyrinth seals are found on the inboard and outboard end caps of the bearing housing to prevent con-
taminants from entering the bearing housing.
On some older models lip seals were used. These were assisted by cast slingers that fling contaminant
fluids away prior to reaching the lip seals. Lip seals do not require any preventative maintenance but
should be replaced during any rebuild operations. They can be cleaned occasionally from the outside by
removing the slingers.
6.2 Disassembly
6.2.1 Remove the coupling guard
1.
Remove the nut, bolt, and washers from the slotted hole in the center of the coupling guard.
2.
Slide the driver half of the coupling guard toward the pump.
1
2
Item Description
1.
Driver
2.
Slide to remove
3.
Remove the nut, bolt, and washers from the driver half of the coupling guard.
4.
Remove the driver half of the coupling guard:
a) Slightly spread the bottom apart.
b) Lift upwards.
5.
Remove the remaining nut, bolt, and washers from the pump half of the coupling guard.
It is not necessary to remove the end plate from the pump side of the bearing housing. You can
access the bearing-housing tap bolts without removing this end plate if maintenance of internal
pump parts is necessary.
6.
Remove the pump half of the coupling guard:
a) Slightly spread the bottom apart.
b) Lift upwards.
6.2 Disassembly
52
Model AF (42"/1200mm/54"/60"/66") LM/LMR Bearings Installation, Operation, and Maintenance Manual
