F40 automatic gearbox oil cooler

[Teapot]

I'm just curious to why you filled the transmission from below, rather than using the filler plug at the top?

[Bigestly]

I'm just curious to why you filled the transmission from below, rather than using the filler plug at the top?

Well...that's the question I had as well He used the drain plug to dump all the possible oil...half of what was in the gearbox. Same plug used to top up with the new oil. The plug works as a oil level check too. When topping up the oil doesn't leak back...we put 2 litres in and nothing leaked out. Only adding the third one some of the oil started to go out...it means the required oil level reached.
The bloke wasn't very happy that I'm looking how the things done, but I'm just care about my car. He was offering me to go somewhere, but I had some arguments to keep him away from me and do his job These days you can't rely too much After he's been quite happy...even offered a coffee

Išsiųsta naudojantis SM-G925F Tapatalk 4 Lt

[Teapot]

The level should be set with the engine running.

According to the documentation, the process to achieve the required level is roughly as follows:

1. with engine off you should add fluid through the filler until it starts to dribble out of the level plug.
2. start the engine and cycle the selector through each position at least 3 times, ensuring it remains in each position for at least 2 seconds.
3. continue adding fluid through the filler until it dribbles out again.
4. refit level plug
5. read fluid temperature (via opcom or tech2) and add an additional quantity of fluid as per the table of temp vs fluid quantity. I can't remember any exact quantities but at temperature of 40C, quantity was about 0.5 litres if memory serves.

In reality just filling with 3 litres after draining then refitting both drain plug and level plug is near enough. But if you refilled with less than 3 litres, your transmission fluid level is probably too low.

[Bigestly]

Done all that appart filling from the top. After adding 2 litres of the oil engine been started and gears changed while car on the lift. Been running for a bit. Then the third gone in.
Didn't noticed anything wrong with the gearbox. Done a trip to Scotland and drives lovely, feels stronger. Couple more days and driving back with a car fully loaded and roof box on top

Išsiųsta naudojantis SM-G925F Tapatalk 4 Lt

[kantimpalo]

No I didn't use them. All I did was jubilee clip 10mm hose to the pipe ends which used to go into the radiator, and extend up to to the new cooler.

The pipe pictured includes an in-line thermostat, to prevent fluid passing through the cooler until the fluid is hot. It would be a nice addition if you can veriy it works. Mine looked a bit corroded, so I decided not to use it and just plumb direct.

iI know is a very old thread, but if anyone remember if has removed the complete old hose to extend the conexion to the new cooler.Do you have used a jubilee clip to connect the hose to the pipe?
_4AAAgHnQOA-960.jpg
IMG20230523120657[1984].jpg
jubilee clips not seems very safe compared to the original conexion...

[horaa]

Honestly i wouldn't use jubilee clips. Go to a crimping service for tractors or any heavy vehicles(buldozers) as they can crimp it better than any jubilee for only a few bucks.

[northpole]

or a hydraulics specialist... don't know if you got one near you in Spain but that is what i would be looking at if you don't trust the clamps...but coolant doesn't push to much pressure so standard coolant pipe clamps should be more than sufficient... you could always go for the oem looking constant pressure clamps or just get the normal ones...

[kantimpalo]

The connector could keep as is shown in the images

1ab4e39s-960.jpgaab4e39s-960.jpg

Also I'm thinking to put this filter
IMG20230512105937.jpg

after a complete change of oil usign the "Gibbons method" -> Thanks to Saab Club of Sweeden
https://forum-saabturboclub-com.tran...en&_x_tr_hl=es

[horaa]

That’s how i changed the gearbox oil on the old astra. Unplug a hose, crank the engine, put new oil