24 00 034 Removing and installing automatic transmission (GA8HP70Z) N63

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:

Do not let skin come in contact with transmission oil and do not inhale fuel vapors.
Wear protective gloves.
Ensure adequate ventilation

IMPORTANT: After completion of repair work, check TRANSMISSION OIL LEVEL .
Use only the approved transmission oil .
Failure to comply with this requirement will result in serious damage to the automatic transmission!

Necessary preliminary tasks:

Clamp off BATTERY .
Remove both INTAKE SILENCER HOUSINGS
Remove front underbody protection. See 51 47 490 REMOVING AND INSTALLING/REPLACING FRONT UNDERBODY PROTECTION or 51 47 491 REMOVING REFITTING/REPLACING REAR ENGINE UNDERCOVER
Remove PROPELLER SHAFT .
Support engine with lifter when removing transmission.

Unfasten ground strap (1).

Fig 1: Identifying Ground Strap

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Release screws (1).

Tightening torque, 24 00 1AZ .

Remove cover (2).

Fig 2: Identifying Screws And Cover

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When unflanging the gearbox, pay attention to installation position of rubber connectors (1).

Fig 3: Identifying Rubber Connectors

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Release screw (1).

Tightening torque 13 62 4AZ .

Remove crankshaft sensor.

Disengage cable from holder (2).

Fig 4: Identifying Cable From Holder And Screw

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Unlock and disconnect connector (1) by turning.
Do not touch pins.
Release cable from brackets.
Insert special tool 24 2 390 in sealing cup.

Fig 5: Identifying Mechatronics Connector

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Operations are described in:

NOTES ON MECHATRONICS

IMPORTANT: Read and comply with important note.

Release screw (1).

Undo hydraulic line and holder.

Fig 6: Identifying Screw Of Hydraulic Line

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Release screw (1).

Tightening torque 17 22 1AZ .

Disconnect hydraulic lines (2) to transmission oil cooler.

Installation note:

Replace sealing rings.

Note installation position.

Fig 7: Identifying Hydraulic Lines And Screw

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

Undo all 6 bolts on torque converter.

Tightening torque, 24 40 1AZ .

Fig 8: Identifying Torque Converter Screw

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Insert special tool 24 4 131 , 24 4 138 into recess in transmission housing.

Lock the torque converter by tightening the special tool.

Fig 9: Identifying Special Tool 24 4 131

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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 10: Identifying Cover Plate And Screw

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Screw on special tool 11 8 910 .

Fig 11: Identifying Special Tool 11 8 910

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Adjust distance (1) between cross bar and facing using nuts (2).

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

IMPORTANT: Distance:
N63 38 mm

Fig 12: Identifying Distance Between Cross Bar And Facing

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Supporting transmission:

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

Secure transmission to mounting with tensioning strap (1).

Repair work is are described in GEARBOX HOLDER .

Fig 13: Transmission Support Tool

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Release screws (1) and (2).

Tightening torque, 22 32 3/4AZ .

Remove transmission cross member.

Fig 14: Identifying Screws Of Transmission Cross Member

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Lower engine with transmission.

Secure engine and transmission in lowered position with engine support beam.

Then support transmission.

Release screws.

Tightening torque 24 00 1AZ .

Unflange transmission.

Fig 15: Locating Screws Of Transmission

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Installation note:

Bore (1) in drive plate must be accessible from opening in transmission housing. Check that fitting sleeves (2) are correctly fitted.

Replace damaged fitting sleeves.

Fig 16: Identifying Sleeves And Bore Hole

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Installation note:

Rotate torque converter until bore hole in torque converter is flush with bore hole in drive plate.

Flange automatic transmission to engine.