17 21 500 Rinsing the transmission oil cooler with lines (automatic transmission) (GA8HP45Z, GA8HP70Z, GA8HP90Z): Procedure

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Automatic transmission removed.

Connect appropriate adapters (see description below) to oil lines exiting from automatic transmission.

Use quick-release coupling to connecting line 17 2 019 from oil dispenser unit.

Use quick-release coupling to drain line 17 2 018 .

Hold and direct open end of drain line into a suitable collecting vessel.

Using oil dispenser unit, flush approx. 1 liter of transmission fluid through oil lines and transmission oil cooler.

Use only approved transmission fluid:

Trade name	BMW part number	Container size
ATF oil Shell L12108	83 22 2 152 426	20 liters

Reposition quick-release couplings.

Flush oil lines/transmission oil cooler in opposite direction with approx. 1 liter of transmission fluid.

Disconnect quick-release couplings.

Remove adapter.

Recycling:

Never use flushing oil.

Dispose of flushing oil according to country-specific waste disposal regulations.

Press hydraulic lines (1) into adapters (2).

Slide clamping bracket (3) into guides and secure with screw (4).

Fig 1: Identifying Hydraulic Lines, Adapters, Clamping Bracket And Screws

Courtesy of BMW OF NORTH AMERICA, INC.