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-   -   Transfer case (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/74441-transfer-case.html)

Green Dragon 05-09-2011 12:13 AM

Hey to address the rust issue no matter if you go with Tom's mod or with OEM replacements, send the shaft to Calico Coatings to get the splines micropolished and coated with a composite Teflon that has corrosion/rust inhabiter.

ceramic coatings, teflon coatings, thermal coatings solutions with Calico Coatings


You will never have a problem again. I work for them when I'm home from school and they are an industry leader. Its worth the peace of mind for a hundred or so bucks to have done. Plus they do all kinds of high performance coatings. Their quality is 2nd to none.

The micro-polish makes the splines less abrasive to counter act one eating into the other, and the Teflon coating reduces friction co-efficients and addresses the rust issue. Just smear some Red Line synthetic between the two and bingo.

JCL 05-09-2011 12:48 AM

Also to address the rust issue look for the air conditioner condensor drain positioned right above the splines. This is where the moisture comes from that causes the splines to rust. It would be cheaper to reposition the drain than to coat the splines.

ayagutak 07-13-2011 10:50 AM

I have this problem transfer case fail, and center driveshaft support, it's expensive what the number and address of that person who can fix this problem,

Triple X5 07-13-2011 10:55 AM

Name Tom
Email address [email protected]
Phone #(262) 749-0689


Sent from my iPhone using Tapatalk

ayagutak 07-16-2011 09:39 AM

hi i don't understand, i know i have the same problem you had, but what i don't understand is why you didn't have to change the transfer case,. also did you send RACEMALIBU572 the complete driveshaft or just apart of it... what was repaired

nikpottala 07-16-2011 05:22 PM

Quote:

Originally Posted by ayagutak (Post 834332)
hi i don't understand, i know i have the same problem you had, but what i don't understand is why you didn't have to change the transfer case,. also did you send RACEMALIBU572 the complete driveshaft or just apart of it... what was repaired


Having went the route of just doing the driveshaft retrofit with RACEMALIBU52 only and then later having to change the gear in the transfer case. I'd recommend ordering the gear from cobratransmission.com along with a new driveshaft and be done with it for a long time.

You don't need a new transfer case for this problem just the input gear and I also recommend putting a new chain in the case while it's open. Not a difficult job once the transfer case is on the bench.

ayagutak 07-16-2011 07:35 PM

What r the tools needed for this job, I have to get out the TC and the driveshaft... Do I send the complete driveshaft to racemalibu52

nikpottala 07-17-2011 12:15 AM

If you're going to try and go the stop-gap measure and only replace the driveshaft end with a 1-inch longer piece then you only need to remove the front driveshaft. Send the entire driveshaft since the new end will have be be machined and welded to you existing shaft. The stock one comes out with the removal of couple bolts where it bolts on to the front differential. Standard metric socket/wrench set.

If you are going to remove the TC, then you need to remove the exhaust, the front stiffener plate under the engine, the exhaust heat shields and uncouple the rear driveshaft. The only additional special tools for this besides standard socket/wrenches are star sockets for the bolts that hold the TC to the transmission. A 12-point metric end wrench will work on the star nuts for the hard to reach bolts.

ayagutak 07-17-2011 04:14 PM

What the best lasting thing to do, save a on cost and have the problem a few miles down the road or just go with the OEM TC and Drive shaft and be done with it.

nikpottala 07-17-2011 08:26 PM

No need to replace the entire TC, just get the replacement gear, a new chain, and driveshaft from cobra transmission and be done with it. If you can remove the transfer case from the car you should be able to change the TC gear/chain and it will save you about $2000 or more when compared to the cost of the TC. Even if you have to pay someone to remove it and put the replacement parts in, you be money ahead vs. buying a replacement TC.

My quick repair didn't last a year so just do it right. IF you have the replacement parts, it can be done in a weekend (likely one day depending on your skills). It took me less than 1.5 hours to have the transfer case on the floor.


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