Removing and installing/replacing hydraulic control unit (8-speed, AISIN GA8F22AW) (Cooper Clubman base AWD, Cooper Clubman S and JCW)

IMPORTANT: After completion of work, check TRANSMISSION OIL LEVEL .

Note the amount of released automatic transmission fluid.

IMPORTANT: Use only the approved automatic transmission oil: ATF6 (BMW/MINI part number 83 22 2 355 599).

Otherwise the automatic transmission may incur extensive damage!

Do not drain oil before the transmission has cooled down.

Preliminary work needed:

Disconnect NEGATIVE BATTERY CABLE .
Drain off TRANSMISSION OIL .
Remove LEFT CHARGE AIR DUCT .
Remove FAN COWL .
Remove TRANSMISSION OIL COOLER .
Remove CROSS CONNECTION under charge air cooler.

Removal:

Release screws and remove cover.

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Unscrew the screws (1).

Remove locking plates (2) with oil temperature sensors (3).

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Disconnect connectors of solenoid valves.

IMPORTANT: Pay attention to routing of cables.

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IMPORTANT: Screws have different lengths.

Numbers: 3, 4, 6, 7, 8 = 21 mm.

Numbers: 2, 5 = 31 mm.

Number 1 = 51 mm.

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Evenly release screws in specified sequence.

Fig 1: Hydraulic Control Unit Screws Loosening Sequence

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Disconnect lever (1) from gearshift shaft.

When removing selector unit, slide in gear selector valve (2) and hold down.

Remove selector unit.

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Installation:

Join shift unit to transmission.

Pull gear selector valve (2) slightly out of shift unit.

Insert lever (1) into gearshift shaft.

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IMPORTANT: Screws have different lengths.

Numbers: 1, 2, 3, 5, 6 = 21 mm.

Numbers: 4, 7 = 31 mm.

Number 8 = 51 mm.

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IMPORTANT: Insert screws slightly during installation, align selector unit and tighten down in specified order.

Tightening torque: 24 30 2AZ .

Fig 2: Identifying Hydraulic Control Unit Screws Tightening Sequence

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Install oil temperature sensors (3) with locking plates (2) and screw.

Tightening torque: 24 30 3AZ .

IMPORTANT: Coat the gaskets with automatic transmission fluid.

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Connect and lock connectors of solenoid valves.

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Parts: Replace screws and cover.

Clean sealing surface of transmission.

Completely remove sealing compound.

Apply new sealing compound.

Install cover and screw.

Tightening torque: 24 30 1AZ .

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Required follow-up work:

Install TRANSMISSION OIL COOLER .
Install FAN COWL .
Install CROSS CONNECTION under charge air cooler.
Install left CHARGE AIR DUCT .
Add TRANSMISSION FLUID .
Connect BATTERY GROUND LEAD .