Porsche 915 Transmission Input Shaft Rebuild

We tore down the transmission in our last lesson but did not take apart the input shaft or pinion shaft.
In this lesson, we delve into the Input Shaft. We show you taking the input shaft apart and replacing the worn parts, then reinstalling the gear sets onto the input shaft. We replace all synchro rings and the dog teeth, where necessary, and bearings. You may have more or less damage in your transmission.
Watch the whole process on the Input shaft and in the next lesson we will cover the Pinion shaft.
Video is for entertainment purposes, please Porsche responsibly.
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[@krisdecreton4243]

This video is so well made! Much appreciated!

[@klassikats]

Glad you enjoyed it! Thanks for watching.

[@nicolasc5331]

best video on 911 rebuild

[@klassikats]

Thanks Nicolas

[@diso41]

Thanks so much for your clear and concise video!!!

[@klassikats]

You are so welcome!
Kurt

[@johnfreeman1189]

Excellent video as usual.

[@klassikats]

Thanks John

[@musaedal-mukhaizeem3403]

I can't wait for your next video! Would you make a detailed video on how to install and fine tune the defferential! Thanks

[@klassikats]

Musaed,
That video has already been filmed... Just working on the editing side of it and it will be out soon.
Thanks for watching and glad you are enjoying it.

[@jk911993]

Thank you.

[@klassikats]

You're welcome!
Thanks for watching

[@wilsonng911]

Again another fantastic video. I learned so much. 👍👍

[@klassikats]

Awesome, thank you!

[@scottlilley8739]

Excellent video! Is there a part number for the tool that holds the input shaft in the vice or is that custom made?

[@klassikats]

Scott,
The part number is P355A however they are no longer available from Porsche. You may be able to find one on eBay or some of the Porsche forums for sale
Thanks for watching
Kurt

[@helldriver911]

Very good explained video, thank you! What special tool are you using, to remove the dog teeth?

[@klassikats]

The Dog teeth holding fixtures come from Sir Tools, they come in two different different sizes to fit the 901,902, and 915 transmissions

[@klassikats]

Part Number P255

[@Little-Johnny-Grozny]

👍👍👍

[@klassikats]

Thanks

[@911engineguy]

Exc video as always. Is there a reason why they are assembled dry? Is it wrong to use trans oil as lubricant during assembly?

[@klassikats]

Michael,
Why you have to assemble the gear sets dry is because the inner bearing sleeves that slide over the shaft cannot be allowed to spin. If there is any presence of oil on the shaft or the sleeves at assembly it increases the chances of those parts moving when the should not. So Yes DO NOT lubricate as you assemble. You really dont have to worry about a dry start when putting the transmission into service as the gear sets are submerged in oil.
Kurt