According to my notes, the EL3302A/15D uses entirely Germanium transistors. However, even the later versions on the EL3302 used Germanium devices in the (playback) audio driver and output stages.
Have a look at post #38 in this thread:
https://www.vintage-radio.net/forum/...t=75160&page=2
I'm not sure about sourcing new belts, but I'm pretty sure that this has been discussed on the forum in the past.