17 21 500 Flushing oil cooler with lines (automatic transmission): Procedure:: Notes
Fitting a new or replacement transmission
Flushing can only be carried out with the automatic transmission removed.
Automatic transmission removed.
Connect appropriate adapters (see Figure, Figure, Figure or Figure), to oil lines exiting from automatic transmission.
Connect the connecting line 17 2 019 from the oil collection unit with the quick-release coupling.
Connect drain line 17 2 018 using quick-release coupling.
Feed open end of drain line into a suitable collection container.
Using oil collection unit, flush approx. 1 liter of transmission fluid (refer to BMW SERVICE OPERATING FLUIDS MG17 ) through oil lines and oil cooler.
Reposition quick-release couplings.
Flush oil lines/oil cooler in opposite direction with approx. 1 liter of transmission fluid (refer to BMW SERVICE OPERATING FLUIDS MG17 ).
Disconnect quick-release couplings, remove adapters.