To change auto gearbox Fluid and filter on an E38/E39 you will need:
1) a torx T20 socket ( male ) for the pan screws and filter screws
2) a H8 Hex socket ( male ) for the drain and fill plug
3) a minimum 5ltrs Dex III
4) a new filter ( BMW )
5) new pan gasket ( BMW )
6) a garden sprayer ( to refill, works brill )
7) a suitable container for draining fluid and rags.
> car up minimum 400mm, the car MUST be dead level.
> Start up.. 10mins turn off
> remove bottom plug and drain fluid / BEWARE HOT FLUID BURNS !! / safety goggles required
> replace pan plug
> remove all pan screws / clips that hold wires to the pan/ be careful there will be fluid still in the pan!!
> remove the 2 filter screws / there will be fluid left in the filter !!
> clean out pan and the four magnets/ lint free cloth / degreaser or brake cleaner
> clean surfaces for gasket
> screw in new filter / make sure its in flat and take care to get the 'O' ring in correct
> replace the four magnets
> place gasket on pan with a little fluid / replace pan
> Undo fill plug , side of box at the rear
> start filling until fluid dribbles out / replace plug finger tight
> start car... go through all gear selections slowly 3 times keeping foot on brake / then in 'P' turn off after 10 mins
> undo filler plug fill some more until dribble comes out / plug back in finger tight
> Start car put in 'N' ....now be careful not to burn yourself!! whilst car running undo filler plug put more fluid in until it dribbles out again, put filler plug in and tighten, the reason for having it running is the box pumps approx 2 - 3 ltrs of fluid in to the torque converter.
> All done car down, fluid to a designated place!!
> Time for a cup of tea / can of beer or a ciggy
Note: the entire box takes 10 ltrs, but you will not require this as the torque convertor will still be half full and also the valve control body also contains more, I would say that a 5 ltr can will be enough, but please dont quote me!!
The last time I gave mine a service it took 6.5ltrs.
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Last edited by marti5; 06-07-2009 at 06:20 AM.