How often? Diff rebuilds.

[The Chef]

I have a B44 that I purchaced secondhand and was wondering how often I should rebuild the diffs or at least check them. As I bought it second hand and didn't build it it feels a little strange so any advice would be great thanks you.

[mpg200]

I bought mine second hand too. The best thing to do is rebuild them when they feel 'gritty' , they should run smooth, just check the tightness,not too loose. In general I rebuild because need to change the gears.

[RoyalCBR]

I have just done my front and rear diffs on my B44 for the first time.

My B44 was second hand as well - looked up 'how to' online, this is a useful vid:

http://www.petitrc.com/setup/associa...ips/index.html

Try the 2nd and 3rd video.

In the end quite easy - I need to upgrade by diff balls as well to some nice shiny ceramic ones

[smarkham]

I just re buildmine when they feel gritty as above. The first re build you can just turn the rings around and just replace the balls. Well worth going ceramic ball route with minimal diff grease just enough to hold the balls in place and loads of the black thrust grease on the thrust balls.

[The Chef]

Front diff gone stripped. Now rebuilt and better

[buhade]

Do not use ceramic balls, there surface is to flat, its only for scale racing. the ball must cut in the diff rings.