Recapping a bathtub choke and condenser assembly in allwave15

[David McGee]

I'm new to the Forum. I'm recapping Allwave 15 and need guidance on how to recap the three choke and condenser assemblies (nos. 92, 93 and 94. thanks

[David C. Poland]

I have never rebuilt those 3 larger bathtub caps on the rear apron of a  Scott AW-15 or AW-12 receiver from the early 1930's. I have restored several of each. They are in low voltage cathode circuits in the IF stages and I did not want to disturb the coils inside unless voltage checks show a dead short.

However, I would have approached the chore by drilling out the rivets to dismount it. Then use a Drummel tool to cut open the back on 3 sides and pry it open. Then melt out the tar in an old electric fry pan or old toaster oven. And hope I can separate the coil to save it. Connect a new cap to the coil and solder to the lug and case. Use something like a hot glue gun to secure the contents. Finally, re-mount the cap with slot type (not Phillips) screws and nuts. And use a Sharpie to mark the unit as rebuilt. 

For the other simple bathtub caps, I disconnect the old and add a replacement next to it.

If you have an extremely nice example, maybe explore remounting with rivets.

[mike hadley]

Hi David,

I posted on a thread a while ago

https://ehscott.ning.com/forum/topics/allwave-15-tar-caps-necessary...

hopefully that should tell you what you need to know

Mike