2 pin to 4 pin diff centre

[chops_Drover]

When changing over from a 2 pin carrier in the front diff to a 4 pin am I able to just take out the original carrier & replace it with the 4 pin or do I need to get this shimmed etc to suit?

[want33s]

Straight swap.
Ratio's might be different depending on year of 4 pinion centre.
Jas.

[ronoor]

why the change if its for a locrite u can use a 2 post i think they work better smoother ok for32 33''. cheers ron

[jono_785]

can someone confirm that u can run a locrite in a 2 pin carrier???

[ajsr]

i dont belive you can use a 2 for a lockright
needs to be a 4 Im pretty sure

[Bad JuJu]

can someone confirm that u can run a locrite in a 2 pin carrier???

No It will not fit.

[chops_Drover]

Thanks Jas,

the swap is so I can run the lockright in the 3.7 ratio front diff. I have had 3.9's in there & have blown the rear so with easy to get parts (the 3.7's) I am trying to get it going again with the lockers...

So I am able to just do the carrier swap at home, no need for specialist tools or anything?

Cheers guys

[want33s]

As long as the ratios are the same and you are putting a rear diff in the rear(spline counts are different) it is an easy job to do at home with little more than a few spanners or a socket set.
Drain oil...
Disconnect brake lines. Clamp the flexi hose if you have a brake hose clamp otherwise drip fluid everywhere.
Remove axles...
Pull centre out....
Reverse order to reassemble.
Jas.

[chops_Drover]

Sorry, I am talking about pulling the carrier that holds the lockright part out of the 3.9 diff centre & swapping it with the 2 pin carrier in the 3.7. So changing the carrier part only out of a 3.9 centre & into a 3.7 centre.

Does that make more sense?

[want33s]

Ok then.
Carrier = The cast iron housing the tailshaft goes to.
Hemisphere = The bit that holds the planetary gears and is encased by crownwheel.

Same process to remove the centre from car.
Then when you have the centre out, loosen but don't remove the two 12mm bolts that hold the lock tabs on the bearing adjusters.
Undo the four 17mm bolts that hold the bearing caps on. Careful not to drop the bearing shells in the dirt. Don't mix up the shells or caps. It is important they go back on the same sides.
Undo the bolts that hold the crownwheel on and swap with your other.
Use locktite threadlocker on the crownwheel bolts (#262 I think)

All just spanner spinning.. Easy stuff.
The only "hard" part is setting the preload and lash when re-assembling.

Jas.

[chops_Drover]

Okay sorry from my manual it called the hemisphere the carrier....

So if I follow the same steps with it as I did originally, but just swap the "hemisphere" part I should need a diff specialist to reset it all. We punched alignment marks into the original diff to mark it...

Thanks heaps

[want33s]

I have setup all my own diffs so I would say you don't NEED a diff specialist unless you have removed/replaced the pinion shaft.

I googled 'setting a diff' and found the info I needed.
I would explain it here but if I forget something it may be costly.

Jas.

[chops_Drover]

No worries.

Really appreciate your help mate....

[ronoor]

i dont belive you can use a 2 for a lockright
needs to be a 4 Im pretty sure

u can use a 2 post. ring BBM we have done 2 cars and they work very well cheers ron

[sheps]

can someone confirm that u can run a locrite in a 2 pin carrier???

No It will not fit.

i have a lockright in the front of my sierra and it is a two pin center. the side gears are reused as the lockright coupler wont fit