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Remove/Install
Pivot Bushing
Removal:
Once the angular contact bearing inner race is removed, the pivot bushing
can also be removed with the puller and the slide hammer.
1. Screw the puller onto the threaded end of the slide hammer.
2. Remove the two inner race adapters from the ends of the arms, if they are
installed.
3.
The circular slot in the fittings at the end of the arms is designed to
engage the flange at the bottom of the bushing. Separate the arms of the
puller a little and lower them to the bottom of the cell, around the pivot/
thermowell.
4.
Close the arms of the puller, engaging the slots on the bushing flange on
each side.
5. Hold the arms closed with one hand and slide the weight of the slide
hammer up with the other, banging it against the stop away from the cell.
After a few moderate blows, the bushing should break loose.
Installation:
1. Drive the pivot bushing into position by striking the stop closest to the cell
with the slide hammer weight.
Do not use any locking compound when installing the bushing.
2. Make sure it is driven all the way down. Check this by putting the rotor in
the cell and confirming that the ball bearing is supporting it, and not the
bushing at the bottom. If it is not all the way down, the uplifted rotor will
push against the bob when the test cell is assembled, preventing proper
rotation of the bob.
