TSB 21-2148: Cracked transmission cooler tubes

[Cobra Jet]

I’m not sure if anyone has seen this one. I tried searching for the prior TSB 21-2108 and this one 21-2148 on here which has superseded 2108, there were no hits.

TSB 21-2148 addresses improperly seated or cracked transmission cooler tubes, see attached TSB 21-2148 PDF.

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[Tomster]

All because some tard doesn't know how to insert and tighten a screw.

I was just under my trans replacing my fine filter. Thank God my threads and lines were ok. One of those babies pops off..... and bye bye 30k tranny.

 

[V00D00]

All because some tard doesn't know how to insert and tighten a screw.

I was just under my trans replacing my fine filter. Thank God my threads and lines were ok. One of those babies pops off..... and bye bye 30k tranny.

If you want to be preventative, SPE Motorsport makes some really nice stuff, and videos on how and why

 

[Tomster]

If you want to be preventative, SPE Motorsport makes some really nice stuff, and videos on how and why

The TSB, the way it read, it was for damaged tunes and stripped threads on the trans where the lines bolt in. I do believe that the instances of failure were due to improper assembly techniques resulting in stripped threads and damaged tubes.

 

[CJJon]

The TSB, the way it read, it was for damaged tunes and stripped threads on the trans where the lines bolt in. I do believe that the instances of failure were due to improper assembly techniques resulting in stripped threads and damaged tubes.

Agree. Probably due to the use of electric/pneumatic tools.

 

[Tomster]

Agree. Probably due to the use of electric/pneumatic tools.

Yes, set it and drive it home was the mentality, I'm sure.

I always turn the bolt the opposite way until I feel the starting threads click against each other and then begin to tighten down. Its hard to cross thread something when doing this.

As was suggested to me a while back by Tob, a more suitable thread locker may be in order. On such a critical point, orange permatex might be a better solution over blue locktite.

 

[CJJon]

I always turn the bolt the opposite way until I feel the starting threads click against each other and then begin to tighten down. Its hard to cross thread something when doing this.

I showed a 20 year old this trick the other day. She reacted like I was some sort of mechanical genius (which I am, just for different reasons).

It was cute. You can shock an amaze kids these days with all sorts of simple things. Like discovering a long-lost tribe in the jungle and they freak out over a mechanical watch (which 20 somethings are apt to do).

 

[Strokerswild]

I always turn the bolt the opposite way until I feel the starting threads click against each other and then begin to tighten down. Its hard to cross thread something when doing this.

Learned this trick from my Dad when I worked on cars with him as a kid.

Amazing that it apparently isn't basic training for an assembly line worker.

 

[kilobravo]

I doubt any bolts are hand-started on any assembly line. Chuck it up and pull the trigger.

 

[rp930]

If you watch any assembly line or engine assembly closely usually you see the automated wrenches turn the bolt counter clockwise before threading in and torquing. I’m sure not every bolt is done the same though.

 

[CJJon]

If you watch any assembly line or engine assembly closely usually you see the automated wrenches turn the bolt counter clockwise before threading in and torquing. I’m sure not every bolt is done the same though.

Never heard of that.

The thread is about trans coolant tubes though, so...really isn't relative.

 

[rp930]

Never heard of that.

The thread is about trans coolant tubes though, so...really isn't relative.

I thought this thread was about the tubes and stripped bolts holding them in. But whatever, sorry to disturb you.

 

[CJJon]

I thought this thread was about the tubes and stripped bolts holding them in. But whatever, sorry to disturb you.

Ah, sorry I didn't read the TSB carefully.

I've never heard of tool that does what you describe. Are you talking about robotic arms or a specific tool in the hands of a human?

 

[rp930]

Ah, sorry I didn't read the TSB carefully.

I've never heard of tool that does what you describe. Are you talking about robotic arms or a specific tool in the hands of a human?

Both. Do a search for the GT500 motor build at the factory. You can see it when they put the heads on. And it’s a cool video anyway.

 

[kilobravo]

Here's the video...and I completely agree with Rick, one of the best clips out there.

I too did not know that assembly line fasteners did the counter clockwise turn before driving it home. Even so, this is pretty obvious a line issue, not material failure.

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