42 replies to this topic

[ZCars Steve]

have you tried it with the driveshaft in and tightened? there will be a small amount of play until the driveshaft is tightened fully? try it and see. if its still got play i would fit a new hub and bearing to be on the safe side.

is the hub pressed into the bearing?
or does it just slide in by hand?

Ed

As Ed says try it with the shaft inplace if there is still play let me know and i can send a bearing they are a press fit and should not slide in by hand

[proyecton10]

Thank you Steve. We will let you know tomorrow after we put everything back together and tighten it up.

[edsmini]

any updates?

Ed

[proyecton10]

Yes, we contacted Steve at Zcars which was very helpful. He offered us sending out a new bearing but he also gave us the n. part and we will try to get one from our local shop here as the shipping might be even more expensive. In a few hours we will tell

Thank you Steve!!

[edsmini]

any updates?

Ed

[proyecton10]

bab news... We bought a new bearing and fe fitted it at a workshop as we didn´t had a press but the play still remains there, which means the bearing was probably fine. We really don´t know where the issue might be. Las week we bought a new shaft head from a mondeo and even when we had it very tight there was still to much play.

Any more ideas on how to solve this issue or what could be causing it? We are more than willing to take as many pics and videos as required in order to localize and solve this problem. We are now doing a complete rebuild so not in a hurry but we would really like to solve this issue before christmas.

Here are some pics and videos:


these are the two shaft heads we have tested without luck.


old bearing in the arm


closer look of the old bearing in place


latest video showing the present play with the new driveshaft head tighten in place.

Any recommendations or advice will be more than welcome!!!

Edited by proyecton10, 21 November 2011 - 08:09 AM.

[R1mini]

First of all is that nut tightened up there should be thread sticking through. Then I would try assembly without the spacer, if nothing is obvious, I would assemble just the CV without the radius arm using the old bearing if it's still usuable. Look at the back of the flange, is it sticking and not seating properly, ie some sort of ridge preventing the flange to sit securely against the inner bearing.

There are not many parts invovled, it should be very obvious

Cheers
David

[edsmini]

how tight is the drive flange? are you sure its tight in the bearing

1) the bearing needs pressed into the trailing arm
2) The drive flange needs pressed into the bearing once bearing has been pressed into the trailing arm

if the drive flange slides into the bearing without resistance then my money would be on the drive flange being the wrong diameter.

(you there steve? is this correct)

Ed

[proyecton10]

First of all is that nut tightened up there should be thread sticking through. Then I would try assembly without the spacer, if nothing is obvious, I would assemble just the CV without the radius arm using the old bearing if it's still usuable. Look at the back of the flange, is it sticking and not seating properly, ie some sort of ridge preventing the flange to sit securely against the inner bearing.

There are not many parts invovled, it should be very obvious

Cheers
David

Thank you David, we know it should n´t be a big deal but up to now it´s been a pain. When the original driveshaft is used the nylon bits on the thread. We will check as you suggested the sitting position with the old bearing, take some pics and we will let you know.

Thank you for your advice, cheers

[proyecton10]

how tight is the drive flange? are you sure its tight in the bearing

1) the bearing needs pressed into the trailing arm
2) The drive flange needs pressed into the bearing once bearing has been pressed into the trailing arm

if the drive flange slides into the bearing without resistance then my money would be on the drive flange being the wrong diameter.

(you there steve? is this correct)

Ed

1) we have tighten it up as much as we considered reasonable before damaging the thread and there is still play in it. Maybe not as much as in the video when fully tighten but still a lot!

2) the new bearing was pressed, as well as the flange. even so we will check with the old bearing as David suggested and take some more detailed pics and videos. It can´t really be that hard but until now, no luck finding the issue.

Let´s see what Steve suggests....

Thank you lots Ed

[Alburglar]

How tight is tight? I undid mine and needed a metre long breaker bar with a 6ft scaffold pole on the end! I wrote down a torque setting for the rears, I will find it and post it.

[proyecton10]

We looked into the ford mondeo manual to find the correct torque but don´t remember the value. I will ask Jorge who found that data. If you could please find your value so we can compare it that would be great, but we didn´t use a 6ft bar.

Cheers

Edited by proyecton10, 22 November 2011 - 10:10 AM.

[Alburglar]

I can't find it. What did the mondeo book say?

[Alburglar]

Mondeo front driveshaft hub nut Mk1/2 is 251 lbf ft - 340 Nm
Mk3 is 290nm

[Alburglar]

I think mine are sierra and they are
Sierra Front hub nut 229 to 258 lb/ft 310Nm - 350Nm

Edited by Alburglar, 22 November 2011 - 12:22 PM.