Atf, Draining And Filling - BMW 5251 Service Manual

Automatic Transmission
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Raise and safely support vehicle.
CA U J I O G
Male sure the car is stable and well supported at all times.
Use a professional automotive lift orjack stands designed for
the purpose. A floorjack is not adequate support
4
With engine running and selector lever in PARK, remove filler
plug (arrow) (A5S 360R transmission shown, refer to other
illustrations for location of filler and drain plugs on other
transmissions).
If a small stream of fluid runs out of the filler hole the level
is correct.
If no fluid leaks out when plug is removed, fluid level is to
low. Add ATF fluid until it starts to overflow.
Install filler plug using a new sealing ring.
Hot ATF can scald. Wear eye protection and protective cloth-
ing andgloves during the check. If the tmnsmission was over-
filled, hot ATF will spill from the filler hole when the fill plug is
removed.
ATF, draining and filling
The procedure given here includes removal and installation of
the fluid strainer (filter). Refer to illustrations in Automatic
transmission fluid pan and strainer.
Remove ATF drain plug (1) and drain fluid into container.
WARNING-
ATFshould be warm when draining. Hot ATFcan scald. Wear
eye protection, protective clothing and gloves.
Remove transmission pan mounting bolts and remove pan.
Remove pan gasket and clean gasket sealing surface.
-
Pull ATF strainer from transmission pump housing. If strainer
sealing ring remains in pump housing remove using a seal
puller.
-
Installation is reverse of removal.
Always replace seal for drain plug and all gasket(s)
and O-rings.
Clean sump and sump magnet(s) using a lint-free cloth.
Tighten transmission pan bolts in sequential order.
Using filler plug
(2),
fill transmission with approved ATF.
Check fluid level as described earlier.