REASSEMBLY
NA Series Operating & Instruction Manual
Page 27
REASSEMBLY
WORK IN A CLEAN AREA!
Before reassembling
1.
Clean all components carefully.
2.
Make sure that all mounting surfaces are free from defects ( mainly those in contact with
gaskets )
3.
Verify the wear ring clearance, any increase reduces pump performances.
The clearances can be restored by replacing worn components.
4.
If necessary, replace the bearings by using the same original type.
Reassembling the pump
Refer to Pump disassembling and proceed in the reverse order.
Start from the bearing housing, then reassemble the casing cover, shaft seal and impeller.
The bearings should be mounted forced on the shaft and sliding in the bearing housing.
Gland packing reassembling
1.
Insert in the stuffing box housing the sleeve, then the packing, the lantern ring, if existing, in its
original position, then fix the gland collar with relative stubs and nuts on the stuffing box
housing.
2.
Assembly all on the shaft and on the bearing housing paying attention to insert on the shaft also
the O-ring or the gasket depending on pump construction.
