360 360 F1 Gearbox Transmission not selecting gear - No Error Lights 430 Stradale

Mine’s done it once....
It was whilst rolling down a slight incline in 2nd gear using engine braking.
The TCU doesn’t like it as it can’t work out what’s going on.


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did it one before but as alarm module was starting to fail replaced it. it stalled both times when going from 2nd to 1st . the clutch was replaced not long ago and when replaced alarm module dealer put it on the diagnostic machines and checked transmission also got them to get f1 transmission to self learn it gears.

 

mike is that just one of the quirks they have ? so when you slow down don't keep confusing the tcu when it going to change from 2nd to 1st by having foot on accelerator

 

Well done! I'm a big DIY guy and honestly the thought of F1 work terrifies me.

 

It wasn’t broken it was just leaking


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Scott maybe you can pierce or press in a new pin of the right size out of stainless steel.

 

The pin has to be installed with the holder inside the barrel otherwise it can’t be assembled.
I’m curious to know how it’s held in place. It shouldn’t need to be a real interference fit at it can’t slide out once the actuator is fully assembled.

Another thought....is the failure just simple fatigue or is it a symptom of something else e.g. misalignment caused by a faulty engagement position sensor?
If it tries to rotate with the engagement out of alignment it will put a lot of force on those pins?

 

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Hi scott!
Thanks for sharing your work with us!
I noticed that the slots work in reverse.
Maybe you should previously press in the installed state by hand to make sure that it works.
I hope it works.
Is the Maserati cam used or new?

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oh my god this is terrible.
Is there no way to exchange the middle piece?
It looks like the pin in the Maserati part was subsequently hammered, I think a saw cut at the end of the pin to recognize. Maybe you can gently heat the pin out of the Maserati cam and knock it out. and then hit the pin in the Ferrari cam.

 

I think that these 3 grooves in the middle of the pin is a breaking point, so that the finger when inserting the gear does not damage the gear if in the gear something stuck. If its really this way you cant use any stainless steel (as i mentioned above in post 33) to exchange the pin cuz you might break something else in your transmission or Actuator. I wonder if everything is ok with your transmission? It is of course possible that the pin is broken because of age. Maybe you should drive up the rear of the car and turn the rear wheel while the individual gears by hand on the transmission through to exclude that it is not the transmission. Otherwise, the new pin would break again in a jammed gear or gearbox.

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We need to see a good one (and no I’m not taking mine apart yet!) to see if the pins are designed to shear.
If the hydraulics tried to select whist still partially engaged (like trying to go from 1st to 3rd without going into neutral on a manual) it could over-stress the part.
Could it be the symptom not the cause? Eg it could be one of the position sensors faulty but that is easily testable when back together before the actuator goes back on the box.

That said I do think in all probability it’s just age/fatigue.

A good spot about the slot.
Is it possible to drift the pin out and swap the part over?
How are the remains held in the old part? Could that give a clue?

 

I think the markings are missing because that is not the original Maserati pin. In your picture you can see a sawn pin.
Probably the same thing happened to the Maserati with the pin like you. That's why the pin does not look like the one in the Ferrai cam. Image Unavailable, Please Login

 

I think you’re probably spot on .....it does look like it might have been cut or dressed with a file unless they are just witness marks.
Looking at the broken pin it’s probably just swaged in the middle to hold it in. If so the remnants should drift out or worst case drilled out and then it should be possible to fabricate a replacement to get you away again....

 

It is far too hard a pin (or at least it should be) to do that with a file. It was an inelegant grinding job.

 

The pins are knurled sort of to hold them in place. I doubt getting it out of the center shaft and swapping it is too difficult.

 

You could do it that way too.
I would drill out the pin holder with a drill press.
The pin has a diameter of about 5 mm I would put in the middle of the broken pin in the pin holder with a center punch a point. And drill with a 3 mm drill, leaving a ring with a thickness of 1 mm. Now the ring should be easier to knock out with caution.
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