Hi. When i put my car into park, drive or reverse gears it made a grinding noise and didnt go anywhere. I took it to an automatic transmissions specialist who told me it could be the transfer case or gearbox at fault. I removed the transfer case as it was the easiest bit to remove. I noticed a large crack in the side and a fluid leak.
When i turn the input shaft, the output flange to the prop shaft only turns sometimes. When i turn the prop shaft output flange, sometimes it locks and i can only turn it back the other way. Am i right in guessing that this transfer case should be in constant mesh with no siezeing of parts.
If you turn one part should the other part turn backwards and forwards easily? If this question has already been answered please point me to the right forum. Thanks. Edd.

 

Hi. I have removed the transfer case from my car trying to fault find grinding gears. The car would grind if you selected park, reverse or drive gears on the auto transmission. With the case removed, when i turn the input shaft the output to the prop shaft only turns sometimes. When i turn the output shaft the input shaft wont turn.
I find that i can only turn the output shaft so far then it locks and i can only turn it back the other way. Should i instead be able to turn a shaft one way and see the other shaft turn? Should i also see the other shaft turn the opposite way if i turn the shaft the opposite way?
Should this component be in constant mesh with no locking out? If anyone has removed and replaced a faulty transfer case from their car can you please tell me. If the answer is already on this forum can you please let me know. Thanks. Edd.

 

I don't know about the behavior of the case when you rotate the shafts, but did you check to see if there was any lube in the case? If the lube has leaked out and the case has run dry then it is pretty much assured that the it needs to be replaced.
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Jaguar: Grace, Pace, and Space - Sir William Lyons

 

Edd, you are suffering from a weakness in the transfer case. Unfortunately, you are looking at having to replace the transfer case. With the crack in the case, you are getting too much flex in the case and it lead to the gears not mating up properly and their destruction. Sounds like you can get a used transfer case from a junk yard and install it yourself for fairly cheap.

 

see your post in the General Section. In short, your transfer case is shot and you need to replace the transfer case.

 

Hi Edd,

I don't see any mention of a cracked case in your original post...am I missing something here?

Anyway, input and output should turn both ways with the same amount of consistent effort required. Your planetary gear cage and pinion gears are wrecked...see photos attached of typical damage (assuming I can upload photos OK) if not email me direct. If you use a salvaged used case get a warranty, because in all probability it could be well on its way to failure.

No new units are available...the Jag dealer over here (USA) wants $2800 for a remanufactured unit with 12 month/12000 miles warranty, and there is a $350 core charge if you do not give them your old unit....if you take your old unit appart (no serviceable "replacement parts" available...yea right ..smells of "rip off") they may still prob. try to charge you the $350 or so. The warranty may not be any good if you drive your Jag to its full performance...the planetary gear cage and pinion gears are, IMHO, very under engineered and ill conceived for 230 odd HP. I can totally wreck a new transfer case in a few thousand miles, with several bursts of redlining through the gears, after a few runs like this you will hear it start to fail/break, at about 6000 plus RPM, 3rd or 4th at 90 to 120 MPH.

I am on my third transfer case...got 24,000 miles on this one so far...only because I never exceed 4000 rpm in any gear and never more than 3000 in first or second. I am looking for a cheap broken unit with a sound casing to re-engineer a more robust planetary cage and pinion setup when I retire in a few years (Mechanical engineer/tool maker/machinist manual/CNC). gotta keep them running..even though X type achieved the Dud of the Decade (in 2008 before the decade was over) award over here !!!!

Man, if I was a legal type I'd try to start a class action law suit....if you were to use all the available power to get out of a dangerous situation you'd stand a good chance of wrecking your transfer case.

A lot of these X types are, I think, driven gently, by women..... I "inherited" my wife's 2006 X type sport wagon with 24000 miles on it, at 28000 I'd wrecked my first transfer case, and I know exactly where and when I "did" the initial damage !!!!...and just out of the 4 year factory warranty period !!!!!

This could have been one of the great autos of all time if not for someone's penny pinching at the time of "conception".

Next case I put in I'm going to try fitting a drain plug (sealed for life...my a#@%&!?)...changing the oil every 6 months or so will, I think, help a little
as I believe the oil turns to sludge after a season or two.

Rob.

 

Hi Edd,

OK, I see you do mention a cracked case (its been a long day in the machine shop !!!!!)....so the Jag dealer would not prob. accept this as a core exchange.

Wow! this is the worst failure I have seen so far. You might as well take it apart and report the findings to all the Jag forums.

Did you do any "hell for leather" driving in the few thousand miles before the failure?....the failures I had did not damage the cases.

Anyway, good look getting her back on the road. Keep us in the loop.

Thanks,

Rob.

 

Thanks for all the help everyone. I will buy a second hand unit off Ebay. The transfer case on the car looks like it also is second hand. It has the typical yellow writing on from breakers yards. No doubt this component has failed on this car before, judging by what you say.
Its a nice car. Costs too much too run though. We will be selling it soon. I think a lot of car manufacturers make at least one dodgy part. I had a Vauxhall Corsa that 2 Exhaust gas recirculation valves went on. They cost £200+ each. About the same price as a second hand transfer case.
I have been driving the car at a wide range of speeds and engine revolutions. Could well be a high rpm causing it? Think that was the case with the Corsa also. It a shame. You should be able to drive a vehicle to its full potential without fear of things breaking. As long as you dont stay at the potential for to long that is.
Oh well. Never mind. May find an indestructible car one day.
Thanks. Edd.

 

Thanks for all the help everyone.
The Jag is now fixed.
The car is fully operational once more.
The transmission seems to be smoother now the transfer box has been replaced.