Originally Posted by kemmer
AFAIK, Peugeots never had swiss threaded bbs. Motobecane and some other french bike makers used swiss threading, but Peugeots should be french or standard (on newer bikes).
Peugeot used Swiss threading in the bottom brackets during the period (approximate) 1979-83. Bikes prior to that are French; bikes after are English. The dates are approximate because that's the period I've been able to nail it down to; it's from actually wrenching the bikes, and I haven't wrenched every model in that period, or for that matter, any 1978s (that I recalls).
I would overhaul the BB, and if the cups and spindle are good, keep them...