MK6 damaged first motion shaft

[ali-bumble]

Just got my van back today and it feels like a whole new van. Bloody better after I just spent £750 on the machine.
It got a new flywheel, clutch, release bearing and 2 prop bearings all fitted and warrantied for a year. Still expensive but it means if it does foul up again I just throw it back ayt the garage that fitted it.
Apparently there was nothing left of the old flywheel, it's a dual mass one and it had separated. Mechanic said only fresh air was making it select gears.
There is a downside however.
At the end of the first motion shaft there is a bearing which sits inside the crank case. Well in mine this bearing had been destroyed and had shagged the end of the motion shaft. Garage recommended fitting a recon box but I think that if I buy the offending bearing from ford I can remove the gearbox and weld up the damaged part of the shaft and grind it down so as it fits.
As it is the garage put it all back together without the bearing in question and said it would work fine for a while but might kill the gearbox eventually.
Oh well back on the road for the moment!
Just wiondering if anyone else had similar problems with the mk6?

[MrMPuk]

If you reply to your original post we'll be able to see what the original problem was.

[ali-bumble]

I did have a related post Here but I thought that as I was now enquiring for help which relates to a new topic ie the new problem with the first motion shaft I thoought I would start a new topic for discussion.
Apologies if this does not follow forum etique (I'm still learning)

[Gunslinger]

welding and grinding gearbox shafts is not the easiest task in the world, and might have implications if done in situ due to heat, the welds have to penetrate properly, and then your grinding needs to be fairly acurate, if you insist on repairing it rather than getting a replacement box (and there is nothing wrong with that) then i would be tempted to see how much trouble it is to remove the shaft, then weld it up and have it turned back on a lathe to the correct dimensions

[Nighthawk]

The input shaft costs about 60quid and it takes a couple of hours to whip off the bell housing, push out the shafts a little and slot the new input shaft in without having to do a full strip of the MT75.

The bearing they've been talking about is in the back of the crankshaft and is a different design to that of the old 2.5.

I'd get it done as soon as possible, as it is the input shaft will be rotating with inadequate support at the front end. That'll allow the clutch disc to to apply it's weight on the main input shaft bearing leading to the failure of both that and the countershaft teeth. Muchos mulah!!!!

[ali-bumble]

I was gonna take the gearbox right out and work on it on the bench in my garage. There's not really enough access to do it properly in situ.. It's a bugger to remove the shaft from the box as you have to strip it down. I think the easiest option is to weld and grind. The shaft isn't under too much load just as long as the end is ground to fit tightly inside the bearing I should be OK.

[MrMPuk]

How worn is it? I've loctited them on before!

[ali-bumble]

The input shaft costs about 60quid and it takes a couple of hours to whip off the bell housing, push out the shafts a little and slot the new input shaft in without having to do a full strip of the MT75.

I didn't realise it was the MT75 box. I thought this van used a newer version. Do the shafts just push out or is there some stripping involved?

That'll allow the clutch disc to to apply it's weight on the main input shaft bearing leading to the failure of both that and the countershaft teeth. Muchos mulah!!!!

I need to go to london and back from Edinburgh this week but I have another van I could possibly use. Although driving the Mk6 just now everything seems to be working fine with no noises. Is it likely to fail if I take it to London?. I am planning on doing the box sometime early in January

[Nighthawk]

Yup, the RWD Transit uses a modified Manual Transmission with 75mm between the centers of the mainshaft and the countershaft (MT75)

The VXT75 fitted in FWD doesn't have the bearing in the crank

I haven't seen the extent of the failure m8, so I can't say how long it'll last for. I'd have thought that if it's quiet at the moment, a trip down to the other end of the rock should be ok, you'll be in 5th most of the way and that gear is on the back of the mainshaft.

The input shaft is also 4th gear, so if it goes go pete tong on the Mway, stick it in 4th and limp it

To replace it, you'll need to pull off the bell housing and remove the rear flange, then with the selector rod out, you can push the shafts half way out of the rear bearing. That'll give enough clearence to change the input shaft and it's inner bearing.

Good luck with it.

[ali-bumble]

Cheers for that Nighthawk. I'll update when the jobs dne!