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Old 04-06-2012   #31
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Re: 40MPH Wobble Warning

Hi:- Get them to change both parts of the drivers side drive shaft, in fact insist on it. Its under warranty so you may as well get it all done for peace of mind later.
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Old 08-06-2012   #32
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Re: 40MPH Wobble Warning

Just had the driveshaft on our Croma replaced with a Fiat reconditioned part and it has promptly escaped. How bad did you say these Fiat recon parts are?

Part number 0071791756 if anyone is interested.
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Old 09-06-2012   #33
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Re: 40MPH Wobble Warning

Quote Originally Posted by Hellcat View Post
Just had the driveshaft on our Croma replaced with a Fiat reconditioned part and it has promptly escaped. How bad did you say these Fiat recon parts are?

Part number 0071791756 if anyone is interested.
It all depends which part of it was "reconditioned" it could be just the three bearings on the end or the big unijoint faces on the wheel end. the new one (outer) drivers side I had done was new and had been flame hardend on the inside. If this was skimmed up prior to fitting the new unijoint it will not be as hard. However on my new one there was some stamping on it which indicated it was made by GKN and said it was "non recon".
This leads me to think that the main problem is really in the inner shaft and the way it is made/ heat treated afterwards.
My experience leads me to think that the overriding problem is the grease and the loss of it. The rubber boot which covers this joint can slide off the female end of the joint if the clip holding it slackens a bit , as mine did, the grease was thrown onto the engine undershield and thats when I started to get the wobble , or soon afterwards. The car is a 56 prestigio with only 35000 miles and it has not been abused (except by the speed bumps and state of the Sheffield roads).

By the way when you say "escaped" did Charlie Bronson dig it a tunnel
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Old 09-06-2012   #34
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Re: 40MPH Wobble Warning

The recon drive shaft that was in a box marked as the correct part number for the car, seemed to be much shorter than the part we surrendered. Fiat have taken photos to send back to h.q. We won't find out what they have to say about it until Monday. The shaft was quite different, having no increase in thickness between the boots. I can only assume this was incorrectly labelled in the box. The shorter shaft worked for about 40 yards before the inside joint popped out, and fired 2 of the bearings off the spider.
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Old 10-06-2012   #35
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Re: 40MPH Wobble Warning

Quote Originally Posted by Hellcat View Post
The recon drive shaft that was in a box marked as the correct part number for the car, seemed to be much shorter than the part we surrendered. Fiat have taken photos to send back to h.q. We won't find out what they have to say about it until Monday. The shaft was quite different, having no increase in thickness between the boots. I can only assume this was incorrectly labelled in the box. The shorter shaft worked for about 40 yards before the inside joint popped out, and fired 2 of the bearings off the spider.
Far Canal!! This must set a new benchmark for incompetence. You have to look at the facts- the old one has to come off first- the new one in one hand, the old one in the other. Funny , this ones dont seem the same as the old one, never mind its says on the box its ok!!
My best guess is the shaft didn`t go back to GKN. Having looked around there are some firms who have been set up just to refurb drive shafts and other parts. Could have been a cock up at one of these.

You couldn`t make it up, not even J K Rowling!!
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Old 10-06-2012   #36
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Re: 40MPH Wobble Warning

Quote Originally Posted by tarquin1867 View Post
Far Canal!! This must set a new benchmark for incompetence. You have to look at the facts- the old one has to come off first- the new one in one hand, the old one in the other. Funny , this ones dont seem the same as the old one, never mind its says on the box its ok!!
My best guess is the shaft didn`t go back to GKN. Having looked around there are some firms who have been set up just to refurb drive shafts and other parts. Could have been a cock up at one of these.

You couldn`t make it up, not even J K Rowling!!
The two were never in the same place... well not while there was a car present to check it against.

The recon was ordered and the original surrendered. The recon then arrived, was collected and fitted. Car is working again for all of 25 yards. Remove flailing new arm and return to Fiat parts dept. Compare with original not yet sent away. Sigh.

The bearings on the spider seemed to be the same size, and the hub shaft and cup seemed to look the same, but the shaft between was shorter, and the same gague all the way along on the recon. In hindsight, I should have took some photos of the recon and especially the two compared when they were laid next to each other on the parts desk. Mind was on thoughts of 'how am I getting to work on Monday' etc.
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Old 11-06-2012   #37
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Re: 40MPH Wobble Warning

Has anyone noticed that the drive shaft is hollow? I wonder if this would allow grease to over time to move up the shaft leading to a dry joint? The reason I ask this is because the boot on the outboard CV seems to be fine, but the joint is shot and sounds dry as a bone.
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Old 11-06-2012   #38
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Re: 40MPH Wobble Warning

If you think about it , the spin drier effect on the boot is quiet a force and if the grease could easily have been "forced " out of even the smallest hole/split. the grease at this end would finish up in the wheel arch /road and it would be easily missed on a visual.
You could see the grease from my inner joint on the engine undershield.
If you can get a look at a diagram of the female end of the inner joint there is no recess for the large end of the boot to locate and as its a complex shape it has a female shape to match on the inside of the boot and a round profile on the outside to take the Jubilee type fastener. If it is only slightly loose it can slide on the inner shaft end and allow the grease to spin out. This is also possible at the wheel end of the shaft as well.
Design nightmare, but of course Fiat don`t recognise the problem!!
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Old 11-06-2012   #39
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Re: 40MPH Wobble Warning

Grr!

Fiat are saying the part supplied was correct, but must have been faulty. Now want the part back to HQ before they will release a refund. That's going to take at least until Wednesday. Starting to think the discount at the parts counter for being a loyal customer of the dealership isn't worth squat when something goes wrong.

A much more local motor factors says they can get it refurbished if they send our actual part away - turn around 2 or 3 working days. Of course I don't want to send my old shaft off if there is a chance Fiat won't refund me on the broken one - or will demand it back in return for another exchange.

Looks like this will be another week of the Croma off the road. This car is costing as much in lost earnings as it is in replacement parts!
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Old 12-06-2012   #40
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Re: 40MPH Wobble Warning

Quote Originally Posted by Hellcat View Post
Grr!

Fiat are saying the part supplied was correct, but must have been faulty. Now want the part back to HQ before they will release a refund. That's going to take at least until Wednesday. Starting to think the discount at the parts counter for being a loyal customer of the dealership isn't worth squat when something goes wrong.

A much more local motor factors says they can get it refurbished if they send our actual part away - turn around 2 or 3 working days. Of course I don't want to send my old shaft off if there is a chance Fiat won't refund me on the broken one - or will demand it back in return for another exchange.

Looks like this will be another week of the Croma off the road. This car is costing as much in lost earnings as it is in replacement parts!
Wonder if Saab/ Vauxhall dealers are so suspitious. How can an escapee drive shaft be the correct one!!!!?
In view of your angst about losing work , might be good to try and get some compo.
Failing that just send the lads round to offer them some assistance in expediting the whole issue.
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Old 16-06-2012   #41
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Re: 40MPH Wobble Warning

Well...

Fiat have confirmed it is a faulty part. They don't know why it has failed in this way and such are unwilling to supply any more of these parts. Sounds like our old shaft is going for reconditioning then!
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Old 17-06-2012   #42
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Re: 40MPH Wobble Warning

Quote Originally Posted by Hellcat View Post
Well...

Fiat have confirmed it is a faulty part. They don't know why it has failed in this way and such are unwilling to supply any more of these parts. Sounds like our old shaft is going for reconditioning then!
Wow --- heads finally come out of the sand!!
Just as a point of order, did the three legged bearings come off the end of the shaft or did it remain on the shaft and just come out of the female part( tulip). Could be that as it is held on by a C spring clip this may have been missed off. If it was still intact on the shaft it can only be that the shaft is too short in the first place. Might even be for a Stilo?!!
My mind is still boggled by this.
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Old 17-06-2012   #43
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Re: 40MPH Wobble Warning

Quote Originally Posted by tarquin1867 View Post
Wow --- heads finally come out of the sand!!
Just as a point of order, did the three legged bearings come off the end of the shaft or did it remain on the shaft and just come out of the female part( tulip). Could be that as it is held on by a C spring clip this may have been missed off. If it was still intact on the shaft it can only be that the shaft is too short in the first place. Might even be for a Stilo?!!
My mind is still boggled by this.
The spider was still attached onto the end of the shaft - but 2 of the bearings had been pulled off. I'm still confused as to how it could have came off. I don't have the part to compare though, and didn't want to dis-assemble it (and the original).
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Old 17-06-2012   #44
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Wink Re: 40MPH Wobble Warning

It happens over here as well!! I am getting the long shaft replaced with a "recon" unit from F**t for 176 Euro plus labour. New unit costs 268!
Dealer tells me that returned units are binned after examination as they know they are substandard! The low price is subsidised by F**t as a gesture of goodwill.
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Old 18-06-2012   #45
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Re: 40MPH Wobble Warning

Quote Originally Posted by Hellcat View Post
The spider was still attached onto the end of the shaft - but 2 of the bearings had been pulled off. I'm still confused as to how it could have came off. I don't have the part to compare though, and didn't want to dis-assemble it (and the original).
I`m not surprised by this as the bearings are only pressed on to the spider as they are not meant to be outside the female tulip during operation. If ,as yours did it was able to "rotate" in fresh air then it allows the centrifugal force to throw them off the spider and into orbit.
The whole idea of the spider/tulip gubbins is to allow the wheel to move in its arc when it is loaded down or goes over a bump/corners without putting strain on the transmission. It also removes "torq steer" which occurs with cars that have different lengths of drive shafts due to the gearbox being on one side of a transverse engine.
The shaft that escaped can only have been too short to do what it did, it was for another car in the fiat range I`m sure of it.
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