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Front Diff/sump Removal

Turbine

By Turbine,
in General Maintenance

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Turbine Collaborator

Turbine

Posted
Posted

Hi guys, I have taken on the job of removing our old RB20DET out of the GTS4 (oil pump failed, stuffed rod bearings :laugh: .

Fun Job. I have the engine out, but I left the front diff/sump still in the car. I need to get the sump out.

Is it a drama to remove it. Do I have to remove the drivers side driveshaft?? :D

Lots of people have done this job quite differently by taking the engine, sump/diff out together. I guess I'll learn :P

Any advice will help. Thanks

Turbine

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Duncan Grand Master

Duncan

Posted
Posted

ouch! how much work did it take to remove the engine without the sump lol!

anyway, its easy from here, the driver's side drive shaft pulls out, just undo the lower control arm and pull the hub out and pop!

what on earth is holding the sump in place if the engine mounts are gone?

blind_elk Grand Master

blind_elk

Posted
Posted

It's no point pulling the hub, because the CV joints simply expand. You need to "punch" the shaft out of the differential. There is a machined groove in the CV joint - get a screwdriver or similar in there and whack with a sizeable hammer / mallet.

It will probably be made more difficult by the fact that the sump is "floating" and has nothing to really hold it in place.

It's much easier with the sump attached to the block, but you need to virtually disassemble the RH suspension to get the shaft in and out.

Turbine Collaborator

Turbine

Posted
  • Author
Posted

It didnt take long once all the sump bolts and nuts were off, it just fell off the engine.

So the lower control/ pitman arm joint has to come apart. What about the tie rod?

Well with the engine out, the sump is just sitting on the crossmember loose.

Hopefully the thing will pop out from the drivers side. Looks like it's just splined into the diff and their is an o-ring into the diff housing as well as the shaft seal and thats it.

:D

CruiseLiner Mentor

CruiseLiner

Posted
Posted (edited)
It didnt take long once all the sump bolts and nuts were off, it just fell off the engine.

So the lower control/ pitman arm joint has to come apart. What about the tie rod?

Well with the engine out, the sump is just sitting on the crossmember loose.

Hopefully the thing will pop out from the drivers side. Looks like it's just splined into the diff and their is an o-ring into the diff housing as well as the shaft seal and thats it.

:thumbsup:

undo the top drivers side arm long bolt and take off the steering rod end, and also the coilover off the bottom eye hole. take the brake line mounts off to allow it more room to pull the hub outwards away from the car (but brake calipers and lines can stay connected).

pull the hub down and turn it fully one way and pull the shaft out of the back of the hub (once the main shaft big nut is undone) and slid the other end out the diff using something to budge it off the circlip. shaft only just short enough to get out of the hub with abit of force :banana:

other side is just a flange to flange setup so undo the 6 bolts i think it is and pull the sump out :(

Edited by CruiseLiner
  • 2 weeks later...
Turbine Collaborator

Turbine

Posted
  • Author
Posted

Well I took everybodys advice.....and decided to leave the sump/diff in the car.

Cleaned all the metal out of the sump (rod bearing material) ready for the refreshed engine.

Lowered the engine assy in on top of the sump, all done. Was easier to fit than remove.

Cheers.

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