131 sport differential is singing at a higher speed

[forsti]

Hello dear community ...

Today I finally had time to make the wheel bearings on the rear axle in a fiat workshops is to let ... I had this working for one of the mechanic had been working on 131 ... plug right axle was first developed, the old stock with the extortion but was first broached in order to reduce the tension so that the camp has been released. new stock with a pipe pressed again or the ring after the stock was heated and then pressed onto the bearing which is fixed in the cool itself. There were seals and replaced all the simmering and put back together. the same on the left side ... Everything went super ....

but ...

I then had a new gearbox oil from agip SAE 75W-90 changed the gearbox, or the same oil was bottled in the differential ...


The problem I have now is that the differential in the last part to sing at a higher rate begins and I will believe nothing but what I noticed before but never, and I shall now make true!

is our error happens during installation or what was damaged, and was behind a false oil used??

But the gear is off now with these agip SAE 75W-90 very well and is bed?utend better and easier!

what shall I make now is the noisy rear axle!

please dear Forio, I beg you to help ...

[djape1977]

oh boy, youre using some sorth of automatic online translator?

if i understood correctly, after you changed the rear wheelbearings the diff became noisy?

if i were you, i'd scrap the whole rear axle and get myself used one from fiat 132.

[forsti]

yes. that`s my problem...
i meen i have taking a wrong syntetic oil...
131 differencial is the same from 132 or better?
are the 132 differencial passed  1 to 1 for 131 sport

greetings heli

[djape1977]

i don't think it's the wrong oil. more likely that diff gears are worn at some angle and with busted bearings they worked fine and now that you changed the bearings the angles have changed and now you can hear the damaged gears.

132 rear axle can be fitted to 131 with little modification. it's much stronger. i've had several 132s over the years and have never heard a noisy diff. if you can get a rear axle from 132 1800 you'll also have rear disc brakes