17 21 500 Flushing oil cooler with lines (automatic transmission)

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Special tools required:

NOTE: Carry out the work steps listed when:
Fitting a new or replacement transmission
Flushing can only be carried out with the automatic transmission removed.

Procedure:

Automatic transmission removed.

Connect appropriate adapters (see description below) 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 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 .

Disconnect quick-release couplings, remove adapters.

NOTE: Dispose of flushing oil properly; do not under any circumstances reuse it.

Arrangement of flushing device for transmission A5S 310Z, A5S, 560Z, A5S 360R/390R, A4S 200R, A5S 325Z, GA6HP26Z

Fig 1: Identifying Radiator Flushing Procedure

Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement of flushing device for transmission A4S 310R

Fig 2: Identifying Radiator Flushing Procedure

Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement of flushing device for transmission A4S 300J

Fig 3: Identifying Radiator Flushing Procedure

Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement of flushing device for transmission A5S 440Z

Fig 4: Identifying Radiator Flushing Procedure

Courtesy of BMW OF NORTH AMERICA, INC.