XK8 driveshaft U joint
#21
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It's not the first shaft an OEM has deemed 'non-rebuildable'. The easiest, though probably not the least expensive, is to take the assembly to a driveshaft rebuilder and let them determine, by measuring and cross-referencing, what joint will fit as a replacement. I've seen a number of shafts like this use joints cataloged as a Nissan/Datsun part.
#22
#23
![Default](/forum/images/icons/icon1.gif)
Is the dealer that told you it was the U joints the same one that wants to sell you the drive shaft? ![Wink](https://www.jaguarforums.com/forum/images/smilies/wink.gif)
xk8 u joint | eBay
![Wink](https://www.jaguarforums.com/forum/images/smilies/wink.gif)
xk8 u joint | eBay
#24
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Use this link http://jagrepair.com/images/AutoRepa...to%20%2705.pdf go to page 11 in the center column item #2 then look to the right column on the top of the page you will see the breakdown. I hope this helps.
How did you make out with the stalling?
How did you make out with the stalling?
And the stalling issue has been gone for a good while. It's actually been running pretty well. Still have the issue with intermittent rough idle & poor performance, but that hasn't been happening very often. It appears that last run of cleaning and reseating all the connectors did some good.
And I suspect that the idle and performance issues won't be settled until I pop for a new ECM, which I intend to do, if I can ever get it to where I'm not spending $ on fixing something that's required RIGHT NOW so I can continue driving it.
Time will tell about that plan.
#25
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I just went onto JEPC & looked up the prop shaft & they do not list the universal joints. The Ebay link for the joints are for the half shafts, the part number JLM01388 is a valid part number but goes to half shaft application for many Jaguars. Your best bet may be to go to a machine shop that does truck repairs or drive shafts. They could match it up of modify the shaft to accept a replacement. If you do find a replacement joint that would be great for all of us.
But the other thing I've considered is to just take the existing to the main NAPA store with a micrometer and seeing if it can be matched up. My best guess is the same year Lincoln Mark. I had one of those the same year as the Jag, and there's many similarity between the two cars, and I suspect a lot of the same systems. That was the first car Ford put the 4.6 modular engine into to my knowledge. And I believe the same block went into the Jag, but with Jag heads. The dash, steering, instruments all appear to be very similar. So....might get lucky and find the U joints are just Ford parts.
Worth a try. Have no better ideas at this point.
#26
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I'm having both of the drivers side axle shaft U joints replaced. No problem getting them and fairly reasonable. But for unknown reasons, no one wants to sell you just the drive shaft U joint, just the very expensive drive shaft assy.
#27
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Just to embellish what Gus provided. The drive shaft has a jurid coupler. There are no u joints on the drive shaft they are rather on the half axle's, off the rear end to the tire spindles.
They should have grease fittings. This comes to many a surprise that these are even there. You have to know they are there just to spot them. Easy to grease if the whole rear end is in the air. This way you can rotate the tires to get your gun on them.
Hope this helps. I have spoken to my Jag guy and he said the jurid couplers rarely fail.
They should have grease fittings. This comes to many a surprise that these are even there. You have to know they are there just to spot them. Easy to grease if the whole rear end is in the air. This way you can rotate the tires to get your gun on them.
Hope this helps. I have spoken to my Jag guy and he said the jurid couplers rarely fail.
But the rear of the drive shaft that bolts up to the differential sure appears to be a U joint. If it's not a U joint, its doing one of the best imittations I've ever seen.
#28
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The prop shaft (main drive shaft) has a collapsible front section. In the event of heavy impact, the tube is designed to crumple thereby avoiding shearing and possible penetration through the floorpan. This can be the only justification for making it a non-serviceable item.
The UJ's have to be a standard size. Having a unique component makes no sense from manufacturing costs alone. It's likely to be a GKN manufactured component provided the shafts are sourced by Jaguar from a UK supplier.
Doesn't help solve your problem but the explanation might be of interest.
Graham
#29
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#30
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Thanks for that information, just need a clarification before moving forward with this. You stated "next to the rubber driveshaft mount" which is on the transmission end of the driveshaft.
The U-joint I need to replace is at the rear of the drive shaft in between the driveshaft and the pinion shaft on the differential.
Are we talking about the same U-joint? If yes....three cheers and I'll dance at your wedding.
Thanks for your help.
Oldfart
#31
![Smile](https://www.jaguarforums.com/forum/images/icons/icon7.gif)
OK , There is only one universal type joint on the driveshaft.I have just found an old one in my large mountain of rubbish which conforms to the measurements.Its from a Triumph Stag for which I'm known as an expert.
Looking up my parts book which has hundreds of hand written notes these are the following part number for this joint.
Original UK Hardy Spicer K5-L4R
British Leyland GUJ116
Another joint from Japan UJ344
I'm currently dismantling a 1998 Jaguar XJR as spares for my 1999 XKR Convertible.
The driveshaft is currently at my feet.
Bit late for the dancing but I'm a fan of Bourbon.
Cheers John
Looking up my parts book which has hundreds of hand written notes these are the following part number for this joint.
Original UK Hardy Spicer K5-L4R
British Leyland GUJ116
Another joint from Japan UJ344
I'm currently dismantling a 1998 Jaguar XJR as spares for my 1999 XKR Convertible.
The driveshaft is currently at my feet.
Bit late for the dancing but I'm a fan of Bourbon.
Cheers John
#33
![Default](/forum/images/icons/icon1.gif)
OK , There is only one universal type joint on the driveshaft.I have just found an old one in my large mountain of rubbish which conforms to the measurements.Its from a Triumph Stag for which I'm known as an expert.
Looking up my parts book which has hundreds of hand written notes these are the following part number for this joint.
Original UK Hardy Spicer K5-L4R
British Leyland GUJ116
Another joint from Japan UJ344
I'm currently dismantling a 1998 Jaguar XJR as spares for my 1999 XKR Convertible.
The driveshaft is currently at my feet.
Bit late for the dancing but I'm a fan of Bourbon.
Cheers John
Looking up my parts book which has hundreds of hand written notes these are the following part number for this joint.
Original UK Hardy Spicer K5-L4R
British Leyland GUJ116
Another joint from Japan UJ344
I'm currently dismantling a 1998 Jaguar XJR as spares for my 1999 XKR Convertible.
The driveshaft is currently at my feet.
Bit late for the dancing but I'm a fan of Bourbon.
Cheers John
That being said.....it appears nothing will ever be easy in my efforts to get this car right. More about that in my next posting.
Thanks for all your help.
Oldfart
#34
![Default](/forum/images/icons/icon1.gif)
The howling noises coming from somewhere in the drive train of my 1998 XK8 are making me crazy and appear to be beyond the capability of the local talent to pinpoint and repair.
One "european" shop emphatically stated that it was the drive shaft U joint. But after much digging and help from forum members determining a replacement U joint (in lieu of replacing the entire drive shaft that includes a new U joint which is what the dealer wants to sell you)....you guessed it....the howling is still present.
I've now had the car to 3 different shops:
1. First shop said drive shaft front Julian rubber donut and U joint - replaced both, still howling.
2. Second shop said need differential service (and you have to drop part of the suspension to even check the fluid level) Service performed - no change whatsoever - still howing.
3. Third shop said they couldn't pinpoint it. Might be tires, might be inner axle shaft U-joints, might be transmission, might be rear wheel bearings, might be rear-end. (In other words, just keep throwing money at it until it goes away.)
Leaving me with having spent considerable sums of money already and no closer to a solution than when I began this quest.
To further describe the problem: The howling noise is speed dependant but not dependant on which gear the transmission is in. It is accompanied by a mild vibration that can just barely be felt at low speeds but is more prominent at higher speed, becoming a very noticable vibration at 60-70 mph. The howling oscillates slightly at all speeds.
The only thing in my past experience that was similar was the pinon bearing going out in the rear-end of a Mustang I once owned. But the sound and vibration here is substantially different, so I'm not at all convinced this is the problem.
Any ideas or suggestions. Anyone ever have this same problem?
Thanks,
Oldfart
One "european" shop emphatically stated that it was the drive shaft U joint. But after much digging and help from forum members determining a replacement U joint (in lieu of replacing the entire drive shaft that includes a new U joint which is what the dealer wants to sell you)....you guessed it....the howling is still present.
I've now had the car to 3 different shops:
1. First shop said drive shaft front Julian rubber donut and U joint - replaced both, still howling.
2. Second shop said need differential service (and you have to drop part of the suspension to even check the fluid level) Service performed - no change whatsoever - still howing.
3. Third shop said they couldn't pinpoint it. Might be tires, might be inner axle shaft U-joints, might be transmission, might be rear wheel bearings, might be rear-end. (In other words, just keep throwing money at it until it goes away.)
Leaving me with having spent considerable sums of money already and no closer to a solution than when I began this quest.
To further describe the problem: The howling noise is speed dependant but not dependant on which gear the transmission is in. It is accompanied by a mild vibration that can just barely be felt at low speeds but is more prominent at higher speed, becoming a very noticable vibration at 60-70 mph. The howling oscillates slightly at all speeds.
The only thing in my past experience that was similar was the pinon bearing going out in the rear-end of a Mustang I once owned. But the sound and vibration here is substantially different, so I'm not at all convinced this is the problem.
Any ideas or suggestions. Anyone ever have this same problem?
Thanks,
Oldfart
#35
#36
![Default](/forum/images/icons/icon1.gif)
The howling noises coming from somewhere in the drive train of my 1998 XK8 are making me crazy and appear to be beyond the capability of the local talent to pinpoint and repair.
To further describe the problem: The howling noise is speed dependant but not dependant on which gear the transmission is in. It is accompanied by a mild vibration that can just barely be felt at low speeds but is more prominent at higher speed, becoming a very noticable vibration at 60-70 mph. The howling oscillates slightly at all speeds.
To further describe the problem: The howling noise is speed dependant but not dependant on which gear the transmission is in. It is accompanied by a mild vibration that can just barely be felt at low speeds but is more prominent at higher speed, becoming a very noticable vibration at 60-70 mph. The howling oscillates slightly at all speeds.
My noise is also dependent on speed. Steering hard into corners, accelerating or decelerating does not affect the noise at all. It is most annoying at low speeds around 30-50kmh.
My noise for reference:
[youtube]IcGtv3jmnIM[/youtube]
Last edited by azeteg; 07-18-2012 at 02:19 AM.
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