24 00 023 Removing and installing automatic transmission (GA6HP26Z) (N63)

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Special tools required:

IMPORTANT:

To prevent heavy damage to the engine block, the protruding thread of the transmission bolts absolutely must be checked for damage and corrosion before removal.

If there are signs of corrosion, the rust must be removed and the threads must be cleaned before removal.

Replace rusted, damaged screws.

Failure to comply with this instruction will result in serious damage to the engine block and transmission.

IMPORTANT:

After completion of work, check TRANSMISSION OIL LEVEL .

Use only approved TRANSMISSION OIL .

Failure to comply with this instruction will result in serious damage to the transmission.

Necessary preliminary tasks:

Disconnect BATTERY
Remove FAN COWL
Remove BOTH INTAKE SILENCER HOUSINGS
Remove underbody protection at front and rear. See REMOVING FRONT UNDERBODY PROTECTION and REMOVING REAR UNDERBODY PROTECTION .
Remove EXHAUST SYSTEM

Unfasten ground strap (1).

Remove plates (2).

Fig 1: Identifying Ground Strap And Plates

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Unfasten nut.

Disconnect cable (1).

Installation note:

Unfasten nut.
Adjust cable by means of holder (2) until spacing A = 1 mm is obtained.
Tighten nut.

Fig 2: Identifying Cable Nut
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Release screws (1).

Remove cover (2).

Tightening torque 24 00 1AZ .

Fig 3: Identifying Cover With Screws

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When unflanging the transmission, pay attention to installation position of rubber plugs (1).

Fig 4: Identifying Rubber Plugs

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Release screw (1) and remove crankshaft sensor.

Disengage cable from holder (2).

Fig 5: Identifying Cable Holder And Crankshaft Sensor Screw

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Unlock plug (1) by turning and disconnect
Release cable from retainers
Insert special tool 24 2 390 in sealing sleeve.

These tasks are described in NOTES ON MECHATRONICS .

(Important: Observe important note)

Fig 6: Turning Plug

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Release screw (1).

Disconnect hydraulic lines (2) to transmission oil cooler.

Installation note:

Replace sealing rings.

Fig 7: Identifying Hydraulic Lines Of Transmission Oil Cooler With Screws

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Release screw (1).

Release hydraulic lines with holder.

Fig 8: Identifying Hydraulic Lines With Screw

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Crank engine at vibration damper in direction of rotation until screw (1) is visible in opening.

Release all 6 screws (1) on torque converter.

Tightening torque 24 40 1AZ .

Fig 9: Identifying Torque Converter Screw

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Press special tool 24 1 380 together and insert into recess in transmission housing.

Fig 10: Inserting Into Recess In Transmission Housing Using Special Tool 24 1 380

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Release screw (1) on left and right of axle.

Remove cover plate (2) on left and right of axle.

Remove bolt (3) on left and right of axle.

Tightening torque 31 10 1AZ .

Fig 11: Identifying Cover Plate, Bolt And Screws On Left And Right Of Axle

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Screw on special tool 11 8 910 .

Fig 12: Identifying Screw Of Special Tool 11 8 910

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Adjust gap dimension (1) between transverse member and support using nuts (2).

Nuts (2) must be screwed down in opposite direction after gap dimension has been adjusted.

IMPORTANT: Gap dimension: 38 mm

Fig 13: Identifying Gap Dimension Between Transverse Member And Nuts

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Release screws (1) and (2).

Remove transmission cross-member.

Tightening torque 22 32 3/4AZ .

Fig 14: Identifying Transmission Mounting Screws

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Remove PROPELLER SHAFT

NOTE:

Bending the propeller shaft by an excessive angle can cause premature damage to the joint/propeller shaft!

Support engine with lifter when removing transmission.

Lower engine with transmission.

Then support transmission.

Supporting transmission:

Support transmission with special tools 23 4 050 and 00 2 030 .

Secure transmission to mounting with tensioning strap (1).

Tasks are described in GEARBOX HOLDER .

After completion of work, check transmission oil level.

Fig 15: Supporting Transmission With Special Tools 23 4 050

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Release screws.

Tightening torque 24 00 1AZ .

Unflange transmission.

Fig 16: Identifying Transmission Screws

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Installation note:

Bore (1) in driving disc must be accessible from opening on engine oil sump.

Check that adapter sleeves (2) are correctly seated.

Replace damaged fitting sleeves.

Fig 17: Identifying Driving Disc Bore And Adapter Sleeves

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Installation note:

Rotate torque converter until bore in torque converter is flush with bore in driving disc.

Attach transmission input flange to engine output flange.