To set the end thrust protection the following procedure should be used:
Note: The following procedure will require the use of a dial indicator and either a
magnetic stand or a stand that can be bolted to one of the end cover bolts.
Position the pump horizontally.
Fit three thrust screws with lock nuts to one of the end covers. Apply Loctite 567 thread sealant
to thrust screws prior to screwing in.
Warning! Do not place any sealant directly into the tapped holes in the end cover. This
could result in bearing contamination.
Mount the dial indicator stand on the pump end cover and attach the Dial Indicator so that the
end of the indicator is on the end of the pump shaft. The travel axis of the indicator must be on
the same line as the axis of the pump shaft.
Push the rotor firmly until it becomes tight against the end cover being set.
Zero the Dial Indicator
Tighten the three thrust screws until they just touch the bearing race. This will be indicated by
the Dial Indicator needle starting to move off zero.
Once the thrust screw are in contact with the bearing tighten them progressively to move the
rotor off the cover by the value as specified in the table above.
Note:
Then make small fractional adjustments of the balance until the total adjustment setting is
reached. ts
shared progressively across all three thrust screws.
Tighten the lock nuts ensuring the thrust screw does not move and that there is no movement
on the dial of the Dial Indicator.
Repeat the process on the thrust screws on the other end of the pump.
If the vanes had been left out for setting remove an end cover and refit the vanes and end
cover.
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