Rubber part fallen into gearbox

Hi everyone,

While refilling my 360 gearbox with 75W90 and a 500mL syringe, I thought a rubber plug was securely fitted at the tip of the teflon hose. Turns out it was not and it fell inside the transmission. I sucked up as much transmission fluid as I could and tied to suck up the rubber piece with a vacuum, but it is not working.
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My next step will be to get a flexible claw pick-up tool (like the Draper 39669),

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but if I fail to recover the culprit, what would you consider?

Would unbolting the gearbox rearcover (part 173612) allow to access the bottom of the gearbox? Based on this video of a team fixing a F430 gearbox, looks like the guy can go fairly deep inside the gearbox recover things that have broken down at the bottom of it.
If that is an option, would you know:
- if sealant is needed to re-assamble the cover (the guys don't use any in the video, surprising)
- what torque should be used for the bolts?


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Thanks much for your help and any idea you could have that I haven't thought about.

G

 

Unfortunately unreachable by fingers :-(

Looks like there is a plug at the top of the gearbox but fear the gears are in the say as the rubber piece is now kind of under one of the gear so without direct eye of sight to that hole at the top.

Maybe removing the left catalytic converter could be a way to go though once I receive my mini gabber.

For sure that will be a lesson learnt

 

Thanks guys, your words are comforting and indeed I ordered 2 claws. Also like the hook idea which I may try if the claws system fails.

Love the 9000 rpm idea, really thought doing it after 2h of failing to recover that thing.

Ultimately I think that removing the rear cover will be the ultimate solution if everything fails.

 

Thanks @67bmer, but my idea (if the claw fails) was to remove the gearbox cover at the rear, i.e. the part before the pressure plate, and on the right hand side, at the bottom, there is a small opening that allows to grab what would have fallen at the bottom. If my plug is too high to go under the gear under which it is, then I was planning (from the filler hole) to push it towards the rear where the gears are smaller, and then be able to grab it from the rear/bottom/right as the guy in the video is able to recover broken gear parts that fell at the bottom of the gearbox.

 

Unfortunately removing the catalytic converter to direct access to the plug, and using a BGS miniretractable claw did not lead to being to get the rubber piece out. It always came at the wrong angle so too wide for the filler hole opening.

Next step: Removing the rear gearbox cover.
- Have bought some Loctite 518 sealant to seal cover back.

Question for you (as not provided in the workshop manual would you know the torque values of the bolts securing the gearbox cover to the sandwitch plates (talking about long Screws #16297424 and shorter screws #16288221)?

Thanks much for your help. If you have a workshop manual for a 430, maybe the torque values are speicified there.

 

Thanks much @flash32 , 24-30 Nm it is then, and clearly the O-rings seem to need to be replaced. Woul you happen to have the next screen explaining what the "Shoulder ring seat (50)" is by any chance.

Also good that I now see I need loctite 270 (just ordered) ;o)

 

Thanks much @flash32 , also helps me better understand that the sandwitch plate has no real risk of falling off when I remove the rear cover since the retainer plate should prevent any movement.

Also, not sure what is your workshop manual, but clearly much better than the one must of us use here (with Torque levels of 70Nm for an M6 bolt LOL)

 

Hi @flash32 , I am starting to get ready to remove my rear cover (trying to do it as a professional, buying all the official material like Loctite 7200 to remove anaerobic gaskets, plastic blades to avoid damaging the machined surface, ordered the proper Locttite 518 sealant, ordered the proper Loctite 270 thread locker etc. A bit paranoid about messing it up.

I was wondering whether you (@flash32 ) would also have the steps showed in the Ferrari Manual to remove the rear cover safely without damaging the seal between the sandwich plate and the main body of the gearbox? I am a bit worried that if I start hammering the side of the rear cover (with a rubber hammer), this may also damage the seal between the sandwich plate and the main body of the gearbox (since I have no need or desire to remove it) and I would hate to have to remove the entire gearing system to have to reseals 2 surfaces rather than just one.

Thanks much for your help.