The A.S. is now set and the washer and spring (216/215) is locked onto the segment with a sealing agent:
Now that the A.S is aligned properly, we can actually check the horizontal bearing friction with some degree of relevance.
The A.S force is roughly 1/10th of the tracking force, so if we have 1 gram tracking, our aligned A.S. system will apply 0.1 g of sideways pressure, if set to "1" on the conical side of the dial (67).
By using ".5" or lower on this dial:
we are actually applying 0.05g sideways force (or lower-according to dial) to the arm.
This force must be enough to move the arm back to the rest post because the specs state that the arm has a maximum horizontal friction of 0.015g.
You might have noticed the difference to the vertical arm friction (0.007g).
Although the two sets of bearings are identical, the difference is due to the extra drag imposed by the shut off lever 158 and its components.
As can be deduced from this extensive alignment procedure and specifically mentioned in every service manual, the A.S. seal must not be broken and all the relevant parts to the A.S spring must not be altered. Without these tools, the precise alignment is simply not possible.
From this point on, the arm's friction and the A.S system is calibrated.
The mechanisms driving the arm, such as main lever/lift rod height and clearances, both pimple clearances, cueing settings, start and stop indexing, need to be adjusted / corrected amongst other alignments. Pictures for these steps can be seen on my webpage under Service Tips and the various units listed thereunder.
As a last look into this arm, the tracking dial's accuracy is ascertained with the use of Lab grade Correx scale. The setting I use is 1 gram:
and the result:
The Dual changers and players from the Steidinger era were precise instruments as can be gathered, but in order to keep that precision, subsequent servicing must be equally precise, otherwise the precision is lost!
This arm and the A.S components along with some other parts will now be removed and returned to a very patient VE member -Eric- who will need to follow these alignments when reintegrating them into his unit.
The original glyptol sealer is easier to break and remove from the groove when readjustment is necessary, but any nail polish will do subsequently - (colour is a matter of personal choice...).