[Hammarlund] SP-600JX14 problem FOUND Vol-II - capacitor shaft NOT BENT
Bill Cotter
n4lg at qx.net
Thu Nov 21 19:32:10 EST 2024
After a total teardown of the SP600JX14 gear train, I discovered
the gear was NOT bent. What was wrong was that the two ball
bearings (one on each of the gear) were missing! What caused it to
appear bent in the photographs was the spring action of the tuning
capacitor link to the gear.
I measured the ball-cup and determined that the proper size was
0.187" or 3/16" dia. I bought a 600-ball assortment from amazon for
$8, and used two oof them to repair the gear train. While it was
all apart I cleaned every part and lightly lubricated the shafts
and sliders, and left the brass gears dry. It is unbelievably smooth.
Thanks to all the posters with their help.
73 Bill N4LG
More information about the Hammarlund
mailing list