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. . . . . . . . . . . . . . Pump Maintenance

12.6.1 When packing is fitted
Withdraw the gland and remove the back cover and stuffing box from
the adapter. Remove the shaft sleeve and gland from the shaft, and then
remove the packing and lantern ring from the stuffing box.

2.6.2 When a mechanical seal is fitted
Draw the gland back carefully, bearing in mind that the stationary face
of the mechanical seal is positioned in the gland.
Carefully remove the stuffing box or seal chamber from over the
mechanical seal rotating element which is mounted on the sleeve.
Remove the rotating element of the seal from the shaft sleeve. Then
remove the gland from the shaft, and the stationary face of the seal
from the gland.
At this point it is now possible to remove the dowel pins and unbolt the
frame adapter from the bearing housing.
The gasket between the adapter and bearing housing should now be
removed and the gasket surfaces cleaned for a new gasket to be installed
on reassembly.
The flinger and the lip seal or bearing isolator closest to the impeller
end of the shaft can now be removed.

12.6.3 Dismantling the bearing housing
1. Remove the bearing cap securing bolts.
2. To remove the shaft assembly, tighten the jack screws evenly until
the bearing cap clears the housing, at which time the shaft
assembly can be drawn clear of the beating housing.
3. Remove the beating cap 'O'-ring.
4. Remove the snap ring that locates the thrust bearing in the cap
and then withdraw the bearing cap from the shaft, leaving the
bearings in position.

5. Remove the lip seal or the bearing isolator from the beating cap.
6. Withdraw the radial bearing from shaft.
7. Remove the thrust bearing loclmut and lockwasher.
8. Withdraw the thrust bearing from shaft.
When removing a bearing from the shaft, it is important to use force on
the inner ring of the bearing only. Save the beatings for inspection.

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