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

WARNING: This page is about a different variant/trim than selected.

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