I just installed a Bosch rebuilt Alternator on a w123 with single pulleys,the recommended belt from my dealer was the 13 x 1030,i had to take it all apparft for after a short ride the front plate on the pulley was dissentegrated and the chuck key had moved out of place on the pulley groove where it should fit.
My questions are is that chuck key supposed to be aligned in that grrove all the way to the top while i tighten the bolt,i cant seem to be able to do that very well with the impact wrench i need to use to tighten it,the thread is a little bad on top and i need air to get it in place but im not sure about the chuck key yet,another question is do you guys think i'll need a x1050 belt? alternator goes in nice and so does belt,i just removed pivot bolt and put belt in before i tightened the alternator up.
Thanking you guys in advance