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Home >> BMW >> 2016 >> Z4 sDrive35is >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Cooling System - Repair (N20) -- Z4-E89) >> Transmission Oil Cooler >> 17 21 500 Flush gearbox oil cooler and lines (automatic transmission)

17 21 500 Flush gearbox oil cooler and lines (automatic transmission)

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

Special tools required: 

NOTE: Follow operations for:
  • Installing a new or replacement transmission.

Procedure: 

(With 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 liter of transmission fluid through oil lines and transmission oil cooler (refer to OPERATING FLUIDS ).

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.

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: Identifying Hydraulic Lines, Adapters, Clamping Bar And Guides
G05758972Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement of flushing device for gearbox GA8HP45Z 

Fig 2: Identifying Gearbox Flushing Device Arrangement (GA8HP45Z)
G05758973Courtesy of BMW OF NORTH AMERICA, INC.
  1. Transmission oil cooler with lines
  2. 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)

  3. Oil drip tray

    17 2 018 Hose to oil drip tray (3)

  4. Adapter with clamping bracket

    17 2 080 Adapter with clamping bracket GA8HP45Z