Quote:
Originally Posted by WISCOJIM
|
I actually ended up breaking down and going to a website called The Schematic Man which is run by a website called Steve's Antique Technology and they had the Sam's Photofact as an Instant Download for $6 which is way less than getting it directly from Sam's.
And as I suspected the tuning dial was restrung at some point in time in the radio's history and whoever did the dial restringing restrung it wrong which was why I was having issues with the tuning dial not tuning properly, and because of that when I tried restringing it (before I realized it was restrung improperly) I tried restringing it like the previous person had restrung it and I ended up breaking the dial string so I had to order some new Dial String material from AES (which I got about 6 feet of it so I had plenty enough to go around for a couple more radios in case I get another radio that has a broken tuning dial string.)
I'm guessing I'm going to need about 2 feet or so of dial string to restring this radio as the Sam's for this particular model didn't include the dial string length for some reason (which I know they've included that information on other radio service manuals before but it seems that they just forgot that tidbit of information on this particular unit.)
A nice helpful feature that this radio has is that all of the small pulleys that are used in the stringing of the tuning mechanism of this radio are color coded green and the ones that aren't used as part of the stringing of the tuning mechanism are color coded white.
That is a really nice and handy feature that when used in combination with the tuner stringing diagram in a service manual helps you get the tuning mechanism restrung correctly.
There are 4 small pulleys all together on this radio chassis one on each corner, and the ones on the upper left, upper right and lower right corners are the ones color coded green, corresponding to the pulleys used in the tuner dial stringing process and the one on the lower left corner is the one that was color coded white indicating that it wasn't to be used in the dial stringing process.
Unfortunately though whoever it was that restrung this radio's tuning mechanism previously was either an amateur who didn't have access to to the service manual for this radio or they were just plain lazy and weren't paying attention to the dial stringing diagram in the service manual because they used all 4 of the pulleys in the restringing job they did to this radio previously which they weren't supposed to do, they were only supposed to only use three of them (the green colored pulleys) which is why the tuning mechanism didn't work correctly (it would get hung up when tuning it either up or down when you would get to the middle of the tuning dial and the tuning knob pulley would slip).
And before I saw the stringing diagram for this radio I attempted to restring it like it was done before but trying different numbers of turns around the tuning knob pulley and that's actually how I ended up breaking the dial string, but once I saw the actual stringing diagram and then saw the pattern the green pulleys were in that was when it clicked in my mind that that was why the pulleys were green colored in the pattern that they were.
Before that I noticed the green colored pulleys and the pattern they were in but didn't know why they were in that pattern and thought it was kind of weird that they would have 3 green colored pulleys and 1 white colored pulley with the green pulleys being in a triangle pattern.