Transmission overflow
 

Where is the transmission overflow?

It is the black plastic cap on the top back of the tranny.

Thanks, is it this black plastic cap as indicated by red arrow?

I may be wrong, but I think its more to the left, towards the driveshaft end. Opposite side on photo, black round cap.

No, the back of the tranny on the other side.

It is this one
http://www.peachparts.com/shopforum/...1&d=1313047084

That is it.

Thanks guys!
So if ATF leaks from the overflow, the ATF should be dripping from the driver's side?
I have been reading some threads, they say the overflow for a 190E is on the passenger's side.

Well I wouldn't be too quick to argue with that. It could be good information but it more than likely depends on the transmission. I've got a 722.303 in my garage that has the same position for the vent as the one in your picture

http://www.peachparts.com/shopforum/...8&d=1309619455

But that doesn't necessarily mean that all transmissions are the same. The "ears" at the front of these transmissions for the starter are sometimes on different sides. I've even seen a picture of a 722.3?? transmission with two starter "ears"...

...and to top it off it could be information about a manual gear box...

It will be best to crawl underneath and check.

It would be even better to drain the oil and replace with the correct amount if it does indeed turn out to be leaking from the vent. These transmissions are not "fill to spill".

Thanks for the reply. I don't even know what transmission my pic is from (I though maybe they are all the same), my transmission is a 722.4.

I have this leak that I can't seem to fix/find, the leak is indicated by the red line I drawn. I replaced gasket countless times, even a new pan & torqued to 8Nm. Replaced the cracked kickdown solenoid with a new one with all new (o-rings). I don't think the leak is due to over filling, just want to rule it out...but wish it was. :D

I run my fingers along the top of the transmission above the gasket & it's dry. :confused:

Nightmare.

Are you sure the brake piston cover above the red line you drew isn't leaking?

It might sound a bit daft but may be it is time to tape toilet paper to your car and see where the stains start to come through.

You'll look a bit silly - like you've cut yourself shaving - but hey it does work.

I degreased the trans a few times & once I see ATF on my garage floor, I jacked up the car & used paper towels to feel around (above the gasket) to see if the leak is from above....BUT still no luck.

Your toilet paper idea is very good, I'll give that a try. I'll degrease the trans once again & stuff toilet up above the gasket & just let the car sit over night...just to confirm if it's from above or the leak is actually from the gasket.

I had a stubborn leak issue on my car that turned out to be a leaking vacuum modulator... the green plastic item that is connected to the engine vacuum. The O ring on it was rotton.

I replaced my modulator last year. It was leaking into the intake manifold due to ruptured diaphragm.