Transfer case - Page 6

fmugur · #51 08-30-2010, 04:35 PM

No, mine is a 2000. Thanks JCL.

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Marc Troy · #52 10-17-2010, 08:32 AM

While traveling at a modest 55 MPH over a NY bridge, my 78,000 mile 2000 X5 suddendly felt like it shifted itself into Neutral without any warning. There MIGHT have been a momentary grinding noise but the engine over-reved at the same time. While waiting for a tow, I found the following:
Regardless of the gear the selector was in, the transmission acted as though it was in Neutral.
When the selector was in Park, it still "rolled" since I was on a slight upgrade.
I'm hesitant to bring it to the "stealership" since their typical diagnosis is "Replace the part" and in this case it could be the transfer case - my wallet is already beginning to hurt!
Any suggestions? Thanks...

JCL · #53 10-17-2010, 11:26 AM

It requires a physical diagnosis to confirm, but that sounds like the transfer case splines (output to front driveshaft). The dealer approach is likely to replace the transfer case. If you don't have a relationship there, try an independent garage that is familiar with BMW.

Look at posts #10 and #15 in this thread, and the subsequent discussion. There is a replacement spline offered by a poster in this thread, and several members have had good results with his work.

Marc Troy · #54 10-17-2010, 12:17 PM

Thanks JCL but as I understand it, if there's a transfer case spline problem, there's still power to the rear wheels.
My problems seems to be unique since I've lost all power to both the front AND rear wheels. In addition to that, the car can still roll in Park. Do you still think it points to the transfer case?

JCL · #55 10-17-2010, 07:15 PM

Quote:

Originally Posted by Marc Troy

Thanks JCL but as I understand it, if there's a transfer case spline problem, there's still power to the rear wheels.
My problems seems to be unique since I've lost all power to both the front AND rear wheels. In addition to that, the car can still roll in Park. Do you still think it points to the transfer case?

Your transfer case doesn't lock together the front and rear driveshafts, like a part-time 4wd truck does. It is essentially an open differential. So yes, I think your problem still points to the transfer case.

Posts on here that mention still having rear wheel drive with a front driveshaft problem are referring to the 2004-onwards models with the x-drive transfer case, not the earlier models.

vsx05 · #56 10-30-2010, 12:14 AM

My X5 started vibrating badly since I hit large pot hole last week. I since replace the front wheel and balance align fronts wheels. Mechanic also notice worn CV boot therefore also change together but problem still there till finally last nite, loud bang on front left hand wheel while accelerating up hills then followed by continious metal clinking sound. Couldnt drive and stop the car on the slope. Clinking sound seems to appear when put in gear.

Does it sound like transfer case to u guys?

Cheers

fmugur · #57 10-30-2010, 01:01 AM

I got the drive shaft from Tom this week and tried to install it. As intended it is a bit longer than the original shaft. I thought to place it in it is just a matter of pulling the TC back a bit to the back and slide the new front drive shaft in. To do this it seems to be a very complex job. I took out all the bolts that connect the TC to the transmission (e-torx) and the bolts from the rear shaft that connect it to the TC. I thought after pushing the rear shaft back a bit I could take the rubber universal joint/flange out but I couldn't due to the centering sleeve. So, what I see I have to do next is to take the rear shaft out to be able to remove the universal joint. But to do that it looks like I have to take the exhaust pipes out and then the heat shield and the the transfer case support and then move the TC back a bit to make room to install the new front drive shaft it.
Am I missing something here? Was this supposed to be as complicated as I find it. Most likely I am not doing the right thing. PLEASE HELP!!!

BTW, the shaft repair is very well done. Thanks Tom.

JCL · #58 10-30-2010, 02:03 AM

fmugur:

Well, you will have to drop the transfer case to get the new (longer) front drive shaft in, according to both the supplier and others who have done it. Can't help you on how much else has to come out to get the transfer case out, but perhaps someone who has done it can chime in.

JCL · #59 10-30-2010, 02:06 AM

Quote:

Originally Posted by vsx05

Does it sound like transfer case to you guys?

Yes, it could be, but nothing replaces a physical inspection. Since you have had issues with the front CV joint and heard the noise at that corner, you need to look at everything from the transfer case to the wheels. If it is the transfer case that implies the front driveshaft output from the transfer case, not the internals of the TC itself.

scottfiske · #60 10-30-2010, 04:43 PM

Hi fmugur,

I just tackled the first part of this today on my wifes 02. I got the shaft out and will be sending it to Tom.

I was curious about putting it back in and what that will entail. Let me know how it goes. Tom mentioned to me that you should be able to slide the trasfer case back without completely dropping it...

Can't wait for the reinstalltion!!

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