6.8.2 Remove the rotating element
You must remove the line shafting or motor before you can remove the pump-half of the coupling.
1.
Thread a long bolt, washer, and nut through the hole at the end of the shaft.
1
1.
Coupling-end of the shaft drilled through for a long bolt with nut and washer
Figure 42: Rotating element removal
2.
Place a sling around the eye bolt, putting a slight amount of tension on the sling.
3.
Remove the four bolts that hold each bearing housing to the casing.
4.
Lightly tap on the inboard and outboard bearing housings to spread them apart, and then slide the
rotating element away from the lower half of the casing.
5.
Lower the rotating element to the ground by sliding the outboard bearing housing away from the
pedestal, allowing the element to rest on the floor with the shaft in a horizontal position.
1
2
3
1.
Lower
2.
Rotate
3.
Slide
Figure 43: Lowering of rotating element
The rotating element can now be serviced using the procedures in the Disassembly section.
6.8.3 Assemble the rotating element
1.
Inspect the main joint gasket and replace it if necessary.
2.
Place a sling around the bolt in the end of the pump shaft.
On full pedestals, the lifting sling must come through the hole in the top plate of the pedestal.
3.
When the rotating element is off the ground and in a vertical position, align any anti-rotation pins in
the casing rings and stuffing boxes for proper orientation in the slots in the lower half of the casing.
6.8 Vertical units
56
Model 3409 Installation, Operation, and Maintenance Manual
