Transfer Case Heads Up
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Senior User
Joined: May 2006
Posts: 222
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From: Edmonton, AB
Transfer Case Heads Up
Last week, I wasn't all that happy after shifting my truck (with a newly re-built C6 Transmission) into reverse and hearing my truck make a terrible grinding sound with no reverse movement.
I took it back to Aamco where I had the tranny rebuilt. After they looked it over, it turned out not to be the transmission at all, but the transfer case. Apparently this happened:
http://www.technicalevolution.com/borg1356.htm
So, they're rebuilding it for me. Not something I was pleased to need to have done. I think it was failing for awhile, but for the life of me, I couldn't figure out what the heck was going on. I'd get a howling sound, which went away, and would come back again from time to time. It didn't matter if I was in 4X4 or not.
So, I guess if you have a weird howling sound that appears to be driveline, and you can't diagnose it, this is something to think about. Also, according to the article above, apparantly it's a good idea to take apart these transfer cases every 100,000 mi and inspect the front case 1/2 and then re-seal the unit. Apparently, it's not real expensive to have done, but it may save you a big repair bill later.
BTW, if anyone is in the Edmonton AB area, and you need transmission work, Aamco on the west end is just fantastic to deal with.
I took it back to Aamco where I had the tranny rebuilt. After they looked it over, it turned out not to be the transmission at all, but the transfer case. Apparently this happened:
http://www.technicalevolution.com/borg1356.htm
So, they're rebuilding it for me. Not something I was pleased to need to have done. I think it was failing for awhile, but for the life of me, I couldn't figure out what the heck was going on. I'd get a howling sound, which went away, and would come back again from time to time. It didn't matter if I was in 4X4 or not.
So, I guess if you have a weird howling sound that appears to be driveline, and you can't diagnose it, this is something to think about. Also, according to the article above, apparantly it's a good idea to take apart these transfer cases every 100,000 mi and inspect the front case 1/2 and then re-seal the unit. Apparently, it's not real expensive to have done, but it may save you a big repair bill later.
BTW, if anyone is in the Edmonton AB area, and you need transmission work, Aamco on the west end is just fantastic to deal with.
Mountain Pass
Joined: Feb 2003
Posts: 158
Likes: 7
From: UP of Michigan
You're right, this is a good thing to check out.
I ran into this in my '88 when I was tracking down my driveline slop. I'd planned to replace a stretched chain only, but found that one of the lugs inside was nearly gone. I couldn't find anyone to weld it up around here at the time, so I made my own "stop", which has worked fine.
I ran into this in my '88 when I was tracking down my driveline slop. I'd planned to replace a stretched chain only, but found that one of the lugs inside was nearly gone. I couldn't find anyone to weld it up around here at the time, so I made my own "stop", which has worked fine.
Mountain Pass
Joined: Feb 2003
Posts: 158
Likes: 7
From: UP of Michigan
Yep, I think it was the better fix. Mine is now a small steel "stop", so I'm not worried about that wearing out. I had to bolt the "stop" to the case, which meant drilling a hole and sealing with RTV. I'm ok with that, though I know some would not be..
Thread Starter
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Senior User
Joined: May 2006
Posts: 222
Likes: 0
From: Edmonton, AB
I was looking around on the 'net and I've heard about your fix, about bolting a stop to the case, and then sealing. It's supposed to be a perfectly good fix. If I'd known about that, I'd have asked the shop to do that instead of replacing the front 1/2 af the case because the front 1/2 of the unit is around $300.00. Oh well, live and learn.
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