1996 Jimmy. How to remove crankshaft from tranny?

[bugyori]

I have removed everything from the crankshaft, but it won't coming out of the tranny?! Somebody please help? How is it connected to the tranny?

[MT-2500]

Originally Posted by bugyori

I have removed everything from the crankshaft, but it won't coming out of the tranny?! Somebody please help? How is it connected to the tranny?

Give us some more details?
Standard or automatic transmission?
What year?
What engine?
Are you talking/asking about engine crankshaft?
What are you replacing on it?

[bugyori]

Originally Posted by MT-2500

Give us some more details?
Standard or automatic transmission?
What year?
What engine?
Are you talking/asking about engine crankshaft?
What are you replacing on it?

Sorry, here it comes:
Automatic 4x4
1996 4.3 vortec engine
Need to replace engine cranckshaft(all messed up, need to remove it) for a new one.It's almost out but the tranny end is still in, won't slide out, I think screws holding it from the tranny side but can't see it of course.
Thank you.

[MagicRat]

It sounds as if the transmission is still attached to the engine, right?? Is the engine still in the vehicle??

Usually one has to remove the transmission from the engine first, to make it easier. The crank is bolted to the flexplate, which in turn is bolted to the torque converter.

In this case, you may be able to sneak the crankshaft out, without removing the trans.

Remove the 4 bolts that hold the flexplate to the torque converter.
Loosen the 6 transmission bellhousing bolts (do not remove). Push the transmission back about 1/4 inch or so.(if the trans is still in the vehicle, you will have to loosen the rear transmission mount.) Make sure the converter is pushed back as well.
You should see a slight gap between the flexplate and the converter. Then you should be able to drop the flexplate and crankshaft together.

[bugyori]

Originally Posted by MagicRat

It sounds as if the transmission is still attached to the engine, right?? Is the engine still in the vehicle??

Usually one has to remove the transmission from the engine first, to make it easier. The crank is bolted to the flexplate, which in turn is bolted to the torque converter.

In this case, you may be able to sneak the crankshaft out, without removing the trans.

Remove the 4 bolts that hold the flexplate to the torque converter.
Loosen the 6 transmission bellhousing bolts (do not remove). Push the transmission back about 1/4 inch or so.(if the trans is still in the vehicle, you will have to loosen the rear transmission mount.) Make sure the converter is pushed back as well.
You should see a slight gap between the flexplate and the converter. Then you should be able to drop the flexplate and crankshaft together.

Yes, the engine and the tranny still in the car.
But with Your excellent description looks like we will able to do the job!
I wan't to thank you for your help! We really appreciated!
Thanx again!
Bugyori

[MT-2500]

Originally Posted by bugyori

Sorry, here it comes:
Automatic 4x4
1996 4.3 vortec engine
Need to replace engine cranckshaft(all messed up, need to remove it) for a new one.It's almost out but the tranny end is still in, won't slide out, I think screws holding it from the tranny side but can't see it of course.
Thank you.

If you are replacing the crankshaft it is best to removed engine from truck and turn engine bottom side up or bottom side down to replace the crankshaft.
Trying to replace the crank with engine in truck is going to be a nightmare.

A engine stand is made for holding engine and flipping it and works good for engine repair and rebuilding and replacing crankshaft.
But it can be done without one.
Without one set engine with back side down on floor or good big workbench with 6 2-3 inch long 3/8 coarse thread bolts screwed into back of engine to transmission holes.

To remove crank after engine is flipped upside down the front cover and timing chain has to come off and the oil pan.

If a rod bearing has spun in rod the rod will need to be replaced to which means cylinder head has to come off and piston removed.

For more help tell us what all is bad on crank and what happened to blow crank.
Things to check.
Is the rings and heads and pistons and cam good?
If crank dyed from lose of oil pressure find out why.

Also rod and bearing fit should be checked with Plastigauge for correct clearance.

[bugyori]

Originally Posted by MT-2500

If you are replacing the crankshaft it is best to removed engine from truck and turn engine bottom side up or bottom side down to replace the crankshaft.
Trying to replace the crank with engine in truck is going to be a nightmare.

A engine stand is made for holding engine and flipping it and works good for engine repair and rebuilding and replacing crankshaft.
But it can be done without one.
Without one set engine with back side down on floor or good big workbench with 6 2-3 inch long 3/8 coarse thread bolts screwed into back of engine to transmission holes.

To remove crank after engine is flipped upside down the front cover and timing chain has to come off and the oil pan.

If a rod bearing has spun in rod the rod will need to be replaced to which means cylinder head has to come off and piston removed.

For more help tell us what all is bad on crank and what happened to blow crank.
Things to check.
Is the rings and heads and pistons and cam good?
If crank dyed from lose of oil pressure find out why.

Also rod and bearing fit should be checked with Plastigauge for correct clearance.

Thank you MT. But unfortunately it's already a "nightmare" as You sad.
Don't have engine stand, just trying to fix it in my driveway from underneith(weekend mechanic). But thank you for your advice!
Will check all of that You mentioned.
Bugyori

[MT-2500]

Originally Posted by bugyori

Thank you MT. But unfortunately it's already a "nightmare" as You sad.
Don't have engine stand, just trying to fix it in my driveway from underneith(weekend mechanic). But thank you for your advice!
Will check all of that You mentioned.
Bugyori

With 4X4 it is going to be a triple night mare to get crank from underside.
You might be able to rent a cheery picker from a tool rental place.
And as said if no engine stand just remove engine and set engine on it butt and have at it.

Good Luck and let us know how it goes.

[blazes9395]

I was reading through some of these,( have been gone for awhile), to remove the cranks from the tranny, you remove the starter first, turn the engine over and 3 bolt heads will come around that are on the flywheel. Remove the bolts (3) and that will disconnect the crank from the flywheel and allow you to get it out.