Drive Line Alignement - How?

[Pawel66]

Dear All,

Any idea how to achieve this, as pictured?



Preferably in a simple way  .

Reading through posts I found just one advise - turn the shaft and see if flex disc turns around the middle - I am not sure if this is compelling, actually...
Also: the German text does not say how to do it. It just says this alignement is important. Can help save the bonnet.

Best regards,
Pawel

[Tyler S]

The red arrow under the transmission is meant to show where shim washers can be added to the transmission mount bolt where it attaches to the large plate. Add washers between the plate and mount to raise the rear of the trans to align the driveshaft to the carrier bearing. Do this only if your mount is new. Most of the time a new trans mount is all thats needed. The rear should be ok if your diff mounts are good.

[Pawel66]

Yes - this I know, thank you. The car is after a complete overhaul. The mountings (all three) are new OEM, but for now no shims were added. I need to raise the back of the gear box a bit as the rear part of the engine touches the steering rod occasionally.

What I am after is how to determine that the line is straight, i.e. ther is right amount of shims added? Is there a way to somehow measure it? What I can think of is to try to look inside the shaft tube with a mirror and see "by eye" if it is straight, but there must be a more "scientific" method...

Pawel

[UJJ]

I use a caliper and measure the distance between gearbox output shaft flange and the flange of the driveshaft. Then I shim until the flanges are parallel.
However, you have to insure that the sub frame is not "hanging" while you do this, as it would be the case when the car is on a 4 arm lift.
I raise the car with my 4 arm lift and then I put my transmission jack under the sub frame and raise it until there is no load on the lift arms in the front.
Of course the best would be a drive-on lift or ramps, then the car rests on its wheels.
Hope this helps, Urban

[Tomnistuff]

There are previous threads that discuss this.  Although I have not found definitive answers there, there are suggestions for techniques to try.  If you search "driveline alignment", the threads will pop up.
Tom Kizer

[cfm65@me.com]

Hi Powel,
A tip I recieved from the E Type forum was to undo the bolts of the prop shaft joints a little, only a mm or so.  Then turn the prop shaft and the joint will open up and clearly show if not alligned. Adjust the mountings until the joints remain closed before tightening the bolts.
Regards
Chris

[Pawel66]

Thank you for your kind advise!

I think I will know what to do!

Pawel