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

WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 328xi, 2012 BMW 328i, and 2011 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

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 BMW Service AUTOMATIC TRANSMISSION - OPERATING FLUIDS ) 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 (refer to BMW Service AUTOMATIC TRANSMISSION - 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 bar (3) into guides and secure with screw (4).

Fig 1: Identifying Hydraulic Lines, Adapters, Clamping Bar 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.

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

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

17 2 017 Quick-release coupling (2 pieces)

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

17 2 070 Adapter with clamping bar (line diameter15 mm) TS65TCT for TCT engine