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40 series diff centres

Posted: Thu Nov 20, 2003 12:00 pm
by BrianWood
Hi

Are the front and rear diff centres in a 40 series interchangeable?

Brian

Posted: Thu Nov 20, 2003 1:05 pm
by dumbdunce
short answer is yes.

the carrier, ring gear, pinion gear, all bearings, flanges etc are identical. if you blow up your rear you can pull the front and put it in the back.


HOWEVER

some later models may have had 4-pinion carriers in the rear (stronger). since your truck had a drum brake front end this is unlikely.

I think there may be differences in the third member casting, to allow for the front diff effectively running 'backwards', to ensure adequate oil flow, but could be wrong. never had a front and rear side by side to confirm or deny.

semi floating rears are mega different though, I think they are a salisbury type, once again you're not likely to be cursed with one of these.

enjoy

Brian

Posted: Thu Nov 20, 2003 3:18 pm
by Gazzaj
is this the same with hiluxs are they interchangable

Posted: Thu Nov 20, 2003 4:17 pm
by BrianWood
Thanks for that dumndunce.

The rear is a bit whiney when warm, and I have the spare front diff from the changeover, so I think I'll look at replacing it shortly

Very good to know there are people out there like yourself who know these things inside out.

thanks again

Brian

Posted: Thu Nov 20, 2003 6:43 pm
by ORSM45
change your oil first