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 (refer to OPERATING FLUIDS ) through oil lines and transmission oil cooler.

Arrangement of flushing devices for TCT

Reposition quick-release couplings. Flush oil lines/transmission oil cooler in opposite direction with approx. 1 liter of transmission fluid (refer to OPERATING FLUIDS ).

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 TCT Flushing Devices Arrangement

Courtesy of BMW OF NORTH AMERICA, INC.

Transmission-oil cooler with lines
Oil dispenser unit
17 2 015 Connection for oil dispenser unit (2), manufacturer: Deutsche Tecalemit or

17 2 016 Connection for oil dispenser unit (2), manufacturer: Horn

17 2 017 quick-release coupling (2 pieces)

17 2 019 Hose to oil dispenser unit (2)
Oil drip tray
17 2 018 Hose to oil drip tray (3)
Adapter with clamping bracket
17 2 060 Adapter with clamping bracket for aluminum lines and steel lines with aluminum connection (line diameter 12 mm) TCT for N54 engine

17 2 070 Adapter with clamping bracket (line diameter 15 mm) for S65 TCT engine