17 21 500 Rinse gearbox oil cooler and lines of twin-clutch gearbox

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Special tools required:

NOTE: Follow operations for:
Installing a new or replacement transmission.

Procedure:

Double twin-clutch gearbox removed.

Connect the respective adapters to all oil pipes leaving the double TCT (see description below).

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

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

Hold and direct open end of drain line into a suitable drip tray.

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

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.

NOTE: Dispose of flushing oil correctly.
Do not reuse under any circumstances.

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 Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement of flushing devices for TCT

Fig 2: Identifying Arrangement Of Flushing Devices TCT

Courtesy of BMW OF NORTH AMERICA, INC.