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

Do not let skin come in contact with transmission oil and do not inhale transmission oil 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 underbody protection at front and rear. See REMOVING FRONT UNDERBODY PROTECTION and REMOVING REAR UNDERBODY PROTECTION .
Remove PROPELLER SHAFT from transmission.
Release center mount
NOTE: Bending the propeller shaft by an excessive angle can cause premature damage to the joint/propeller shaft!
Tie back propeller shaft to underbody
Support engine with jack when removing gearbox.

Release screws (1).

Remove cover (2).

Tightening torque 24 00 1AZ .

Fig 1: Identifying Screws And Cover

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

Fig 2: Identifying Rubber Connectors

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Release screw (1) and remove crankshaft sensor.

Disengage cable from holder (2).

Fig 3: Identifying Cable Screw From Holder

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Release screw (1).

Undo hydraulic line and holder.

Fig 4: Identifying Slacken Nut

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Release screw (1).

Disconnect hydraulic lines (2) to transmission oil cooler.

Installation note:

Replace sealing rings.

Keep to installation sequence.

Fig 5: Identifying Screw And Hydraulic Lines

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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 6: Identifying Vibration Damper Screw

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Prepare special tool (1) 24 4 161 (A) with shaped element (2) 24 4 166 as illustrated.

Fig 7: Preparing Special Tool (24 4 161) With Shaped Element (24 4 166)

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Insert special tool 24 4 160 into recess of transmission housing and clamp gently with screw (1).

Raise by turning screw (2) and clamp down.

Then tighten down screw (1).

Fig 8: Identifying Screw Of Special Tool 11 8 910

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Screw on special tool 11 8 910 .

Tightening torque 31 10 1AZ .

Fig 9: Screwing 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 10: 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 11: Supporting Transmission Using Special Tools 23 4 050

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After completion of work, check TRANSMISSION OIL LEVEL .

Unlock and disconnect connector (1) by turning.

Do not touch pins.

Release cable from brackets.

Insert special tool 24 2 390 in sealing cup.

Operations are described in: NOTES ON MECHATRONICS

Fig 12: Disconnecting Connector

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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 13: Locating Transmission Screws

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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 14: Identifying Sleeves And Bore

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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.