T56 Transmission Disassembly Video - ALL VIDEOS NOW POSTED
02-09-2016, 04:50 PM
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T56 Transmission Disassembly Video - ALL VIDEOS NOW POSTED Hi folks,
Last summer, I put my 2004 V up on jack stands to address a handful of fairly standard wear & tear issues after 180K miles (clutch, bushings, hubs, brakes plugs, wires, etc. etc).
Since I had the transmission out, I decided it would be a good time to replace the synchros. At the time, I took a lot of videos of the trans rebuild.
-UPDATE:
All the videos are now done:
Hey gang,
I finally finished all the videos for the T56 rebuild. Not perfect, but I'd like to think that at the moment they may be some of the better ones out there. Enjoy!
Part 1 - Initial tear down of the T56 Transmission: Part 2 - Rebuild of mainshaft assembly: Part 3 - Setting the mainshaft and countershaft clearances: Part 4 - Final Assembly and Countershaft extension clearance:
-Chris
Last summer, I put my 2004 V up on jack stands to address a handful of fairly standard wear & tear issues after 180K miles (clutch, bushings, hubs, brakes plugs, wires, etc. etc).
Since I had the transmission out, I decided it would be a good time to replace the synchros. At the time, I took a lot of videos of the trans rebuild.
-UPDATE:
All the videos are now done:
Hey gang,
I finally finished all the videos for the T56 rebuild. Not perfect, but I'd like to think that at the moment they may be some of the better ones out there. Enjoy!
Part 1 - Initial tear down of the T56 Transmission:
-Chris
Last edited by srracer; 04-07-2016 at 02:12 PM.
02-09-2016, 07:28 PM
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Hi Radeon,
Well, my case may be unique as I was not in any rush. I have 3 cars, so my plan all along had been to put the car on jack stands, take my time to do everything that I wanted (and then some), and then put it back together. During which time, I stress-fractured my femur in a half ironman triathlon.
That said, the total time was 5 weeks (9/3 to 10/18). The bulk of which was waiting for the turn around to send my primary shaft out to get welded and re-ground because of excessive clearance to the 5/6 gear (which I note in the disassembly video). I also had to have 3rdgenhawks send me a new tailshaft seal because the one they sent was incorrect and I didn't notice until it was time to put back together.
Total cost was:
$810 for kit from 3rdgenhawks
$125 for welded/reground mainshaft
$24 transmission fluid
----
$959
-Chris
02-09-2016, 07:37 PM
#7
And this is why transmission shops are so damn expensive 
I bet this gives you extra peace of mind as well. I know transmission shops have trained professionals (I'll use that term loosely), but they're just trying to get stuff in and out as quickly as they can. I'd feel much more comfortable knowing that every step in the trans dis-assembly and re-assembly was carefully and accurately performed by me. Great video.
I bet this gives you extra peace of mind as well. I know transmission shops have trained professionals (I'll use that term loosely), but they're just trying to get stuff in and out as quickly as they can. I'd feel much more comfortable knowing that every step in the trans dis-assembly and re-assembly was carefully and accurately performed by me. Great video.
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02-10-2016, 11:08 AM
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Yes - it was a press fit. I had to put the whole transmission in the press. Honestly, possibly a little tighter than I would have preferred, but I know for sure that gear isn't going to wear the splines out now.
02-10-2016, 11:19 AM
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I wouldn't be surprised if Jason's price for the V is higher, though, because the V has 3 piece carbon syncros, which run a bit more than a 'standard' T56
If I were to do just what is in the Stage 1 from TDP, I think you can get the basic kit without bearings for around $600.
Honestly, none of my bearings even looked all that bad, but one of the bearings got banged up during removal, which has to be done to disassemble the mainshaft.
I guess my point is, you may be unpleasantly surprised if you're counting on a shipped out rebuild to cost $800 + shipping for a V transmission that you suspect has a problem. And I don't mean that as a ding against TDP at all - Jason was great to work with for sending my mainshaft in for the 5/6 work.
-Chris
02-10-2016, 11:51 AM
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Based on the number of people that have this problem, my guess is that while they may have targeted a light press fit from the factory, I suspect that they have a tolerance range that puts some of the assemblies into what's referred to as a 'running' fit.
Then, any amount of movement between the 5/6 gear and the mainshaft would result in the spline wear that so many report after many miles of that gear wiggling on the mainshaft.
-Chris
Then, any amount of movement between the 5/6 gear and the mainshaft would result in the spline wear that so many report after many miles of that gear wiggling on the mainshaft.
-Chris
02-10-2016, 10:16 PM
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If the gear has any play, then it is going to wiggle on the shaft. That wiggling is metal on metal and is going to wear the surface away eventually. If it was related to load or speed then you would see more failures on high HP cars and/or cars with low miles. Neither of those appear to have any correlation to this failure.
In my very humble opinion, this is simply a matter of too loose a fit between the 5/6 gear and the mainshaft. And that with enough revolutions, the splines will wear out - faster with a looser fit.
-Chris