Sheraton 9A Headstock Lapping

[Dubi]

Dubi,
Thanks for the comments, and photo.

Each spindle end inserts into its respective bore without any looseness, and rotates firmly.
Started adding longitudinal marks with non-permanent wick pen to assist assessment.
Can insert spindle all the way axially by hand without twist, then extract axially, but with plastic dead-blow hammer.
Inspection of marks shows the contact areas, see photo.

Size is now virtually spot-on, and the bores concentric.
Now must get some clearance for the oil film.

Busy making laps from PVC pipe.
Made a sample, slit and sized to fit, then multiple holes drilled for the slurry.
Have to get a length to make it practicable to hold and rotate on axis.

I will start with slurry to achieve some sense of spindle rotation, then swap to toothpaste as you suggested.
Do you have a recommendation for the flavour ? Ha, Ha.

Have started on the shims also.

Keep well,
John

Nice work, keep it up. How is the virus situation where you are?
Here in Jakarta we have about 3,000 new cases a day if you can
believe the Government figures.

Dubi

 

[electrosteam]

I am in NSW.
Some of the states have various levels of mask wearing, border closing and movement restrictions.
Here masks are recommended - and common, but not 100%.
Indoor groups limited, restaurants and bars have restrictions.
NSW tests over 10,000 per day, infections are down to about 5, with none on ventilators.

Best wishes for the situation in Indonesia,
Keep well,
John.

 

[Charles Lamont]

I suggest now is the time to use a bearing scraper. A scraped bearing should wear better because of the multitude of microscopic oil pockets created.