What kind of oil would leak past the black Oring pointed to with the blue arrow on the shaft (not the triple seals) Image Unavailable, Please Login
Pathing it out. That o-ring seals against the bearing for the flywheel. It should prevent the same fluid that pushes out the piston (with triple seals) from getting out around those seals, and leaking onto the flywheel surface. I believe brake fluid is used as the hydraulic fluid here.
Funny…I did not remember that as an o ring but a circlip” retaining the shaft into the flywheel bearing. There is no oil there that I remember. I need to see it.
But, back to the question. I was under the impression that the triple seals seal against gearbox oil, and the shaft seal oring seals against hydraulic fluid. Or is it the other way around?
That path is transmission fluid from inside the gearbox leaking out via the propeller shaft, which leak is stopped by the triple seal. Image Unavailable, Please Login
that’s it pix worth 1000 words. There’s the circlip. The system is a Ferrari kludge. Triple seal and o ring stop trans fluid. Brake fluid runs in the throw out bearing sliding and fluid contained in the TO bearing housing sliding on the flange shaft.
That should not happen unless the voith halves are not sealed possible damages casing from reused starter ring bolts.
Correct that should not happen but every single one of the pumpkin I have come across have leaks in them. Sometimes replacing the triple seal and the oring does not correct all the leaks.
And the brake fluid leak would be on the shaft if the seals inside the slave bearing have failed. Brake fluid would also leak out from behind the flange if the two little orings sealing the entry and exit of the hydraulic fluid feeding the slave bearing. Image Unavailable, Please Login
Brake fluid in the TO bearing have their own seals. Any brake fluid outside of the TO bearing is a failure of those seals. The triple seals prevent gear oil migration into the flywheel. It is that migration making the grease runny that causes flywheel leaks. The O ring prevents the contents of the flywheel from migrating to the clutch.
Yes but I have never seen the little o-rings fail. It's always the shaft seals or the bearing itself. That looks like the 1st gen T/O bearing so twin disc ? The triple seals were a really poor design. The voight dampen flywheel pack was unnecessary too and just added weight. I ditched that system and raced my 348 for a number of years and the harmonics, if any, did not destroy my gearbox in the slightest. I did not notice increase NHV but then again I was running challenge race exhaust and solid delrin bushings and heavier shocks and springs so "NHV"....What's that?
