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

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NOTE: Follow work steps 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 connect line 17 2 019 from oil collecting 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 collection unit, flush approx. 1 liter of transmission fluid (refer to Gear oil for dual clutch transmission GS7D36SG) 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 bar (3) into guides and secure with screw (4).

Fig 1: Identifying Hydraulic Lines, Adapters, Clamping Bars With Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement of flushing apparatus for TCT

Fig 2: Arrangement Of Flushing Apparatus For TCT

Courtesy of BMW OF NORTH AMERICA, INC.