Rebuilding a Broken Lamborghini Gallardo Transmission - Gear Carnage - Part 3

Excited to share my journey learning how to rebuild the Graziano L140 Transmission that's used in the Lamborghini Gallardo and Generation 1 Audi R8.
This transmission was reported to not shift from the shop when run at operating temperature, and was gathering dust at a junkyard. Can we diagnose what went wrong and save it?
Part 3: Gear Inspection
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0:00 Intro
0:58 Synchro Inspection
08:18 Shift Collar and Fork Inspection
15:20 Blocker Ring Inspection
16:56 Next Steps
Music Credits:
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Autumn 2011 by Loxbeats spoti.fi/34tPBBO
Creative Commons - Attribution 3.0 Unported - CC BY 3.0
Free Download / Stream: bit.ly/autumn-2011
Music promoted by Audio Library • Autumn 2011 - Loxbeats...
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[@tanelrebane]

Again, great content! Many thanks!🙏

[@eskiltroll]

Hi, thank you for a very interesting video series. However, there is something I don‘t quite get. What kind of pressure is increased due to that the edges of the gears are scored? Why does that prevent the e-gear from switching gear? Does the scoring increase the force required to actually engage a gear? If so, why? Is the speed-up of each gear through the synchronization rings slower due to the scoring? I‘d like to understand the issue a bit better.

[@ftwgarage]

These scored gears will not mate with each other smoothly, adding additional axial pressure (or thrust) to the entire system. Helical gears naturally create thrust and want to come apart from each other vs straight-cut gears when they mesh together. That's why we have thrust bearings and washers to help keep the two sets of gears locked in place. So for these automated E-Gear systems, they will detect resistance when trying to shift the collars into the speed gear. If the resistance to shifting is above a programmed threshold, the system will not shift - You can probably still shift the car manually with scored gears though - it will probably take more shifting force to overcome the additional thrust in the system now. This is the working theory that my shop instructor told me when I was consulting with him.