Alternator Bearings

[adam03031980]

Hi All

Looking to put new bearings in my alternator its a bosch/valeo part no 9640878780 but cannot find anywhere that will tell me what size or part no is required for a replacement can anyone help? i cant take the alternator out to check as use the car daily

[jasper5]

According to your part number if you go to a normal bearing supplier you will need a 6303 bearing and a 6003 bearing SEALED type.

Available on Amazon or Ebay as well as all bearing suppliers.

[adam03031980]

thats great thanks jasper one last question any idea now big a multi spline tool is required

[jasper5]

Sorry, you need the sealed type , i posted the wrong links.

I can find out tomorrow about the size of the splined tool, I used one last week, I borrowed it off my mate who rebuilds alternators.

[adam03031980]

lol thats ok, would it still be the same part no

[jasper5]

Same part numbers.

[jasper5]

I managed to get hold of my mate....the splined tool is 17mm.

[adam03031980]

Thats great cheers jasper mine only go up to 14 so will go buy one

[jasper5]

The correct tool has a sleeve that fits over another part so you can hold the alternator shaft whilst you tighten up the bolt....the splined part needs to be mega tight.

[adam03031980]

Any idea what torque setting i should do it up to

[jasper5]

No idea, very tight...I had a pulley come loose on a customer's car, aux belt flew off when the pulley flew off, tightened it up with that tool as tight as I could get it, it didn't come loose again.

[adam03031980]

Mine goes up to 230nm which i guess should be enough thanks though much appreciated