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Home >> BMW >> 2017 >> X3 sDrive28i >> Repair and Diagnosis >> External Pages >> Different car >> Section 381 (Cooling System - Repair) >> Oil Cooler >> 17 21 500 Rinse transmission oil cooler with lines (automatic transmission) (GA8HP45Z, GA8HP50Z, GA8HP70Z, GA8HP75Z, GA8HP90Z)

17 21 500 Rinse transmission oil cooler with lines (automatic transmission) (GA8HP45Z, GA8HP50Z, GA8HP70Z, GA8HP75Z, GA8HP90Z)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required: 

NOTE: Carry out the operations listed when:
Install a new or exchange transmission.

Procedure: 

Automatic transmission removed.

Connect appropriate adapters (see description below) to oil lines exiting from automatic transmission.

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

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

Hold and direct open end of drain line into a suitable collecting vessel.

Using oil dispenser unit, flush approx. 1 litre of transmission fluid (See 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 litre of transmission fluid (See AUTOMATIC TRANSMISSION -- OPERATING FLUIDS ).

Disconnect quick-release couplings.

Remove adapter.

Recycling: 

Never use flushing oil.

Dispose of flushing oil according to country-specific waste disposal regulations.

Press hydraulic lines (1) into adapters (2).

Slide clamping bracket (3) into guides and secure with screw (4).

Fig 1: Pressing Hydraulic Lines Into Adapters
G05758972Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement of flushing device for transmission GA8HP45Z, GA8HP50, GA8HP70Z, GA8HP75Z, GA8HP90Z 

Fig 2: Identifying Arrangement Of Flushing Apparatus For Transmissions
G09955972Courtesy of BMW OF NORTH AMERICA, INC.