24 00 037 Removing and installing automatic transmission (GA8P70H) N55_Hybrid

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.

WARNING: High-voltage system - danger to life!

WARNING: The following points must be strictly observed prior to starting work:

DE-ENERGISE THE HIGH-VOLTAGE SYSTEM
Observe SAFETY INFORMATION for handling with hybrid cars

IMPORTANT:

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

IMPORTANT: After completing work:
Adjusting the rotor position sensor is required.
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!

NOTE: Observe notes on UNLOCKING AND DISCONNECTING different types of connectors in hybrid cars.

Necessary preliminary tasks:

Disconnect HIGH-VOLTAGE SYSTEM from power
Clamp off BATTERY
Remove FAN COWL
Detach See 11 61 365 REMOVING AND INSTALLING/REPLACING FRONT LEFT CHARGE AIR DUCT (N55 HYBRID) or 11 61 362 REMOVING AND INSTALLING/REPLACING RIGHT CHARGE-AIR DUCT (N55 HYBRID) both charge air hoses on charge air cooler
Remove EXHAUST SYSTEM
Release MONITORING SENSOR on catalytic converter
Support engine with jack when removing gearbox

Release cable (1) from holders.

Fig 1: Identifying Automatic Transmission Cable

Remove upper part of cable duct (1).

Fig 2: Identifying Cable Duct Upper Part

Release all cables (1) from cable channel.

Fig 3: Identifying Automatic Transmission Cables

Release cable box (1) from bracket.

Set cable (2) and cable box (1) aside.

Remove INTAKE SILENCER HOUSING .

Fig 4: Identifying Automatic Transmission Cable Box And Cable

Unclamp both transmission cooling lines (1) with special tool 13 3 010 .

Fig 5: Removing Automatic Transmission Cooling Lines Using Special Tool (13 3 010)

IMPORTANT: The cooling lines (1) are located on the transmission under the splash board.

Fig 6: Identifying Automatic Transmission Cooling Lines

Release hose clamp (1) of both cooling hoses.

Disconnect cooling hoses from lines.

Installation note:

Tie cooling hoses up to prevent them from being pinched between

engine and transmission when installing the transmission.

Fig 7: Identifying Automatic Transmission Cooling Line Hose Clamp

Release positive battery cable (1) from clamps.

Remove heat shields (2).

Fig 8: Identifying Positive Battery Cable And Heat Shields

Release cover (1) from positive battery cable.

Fig 9: Removing Positive Battery Cable Cover

Release nut (1) from positive battery cable (2).

Tightening torque 12 36 5AZ .

Release positive battery cable.

Fig 10: Identifying Positive Battery Cable And Nut

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

Operations are described in:

NOTES ON MECHATRONICS

Fig 11: Disconnecting Automatic Transmission Connector

IMPORTANT: Read and comply with important note.

Disconnect connector (1).

Release cable (2) from clamp (3).

Fig 12: Identifying Automatic Transmission Cable, Connector And Clamp

Release screws (1) from high-voltage connector (2).

Disconnect connector (2).

Tightening torque 12 36 2AZ .

Fig 13: Identifying High Voltage Connector And Screws

Release clamp (1) from holder.

Unfasten screws (2).

Release guide (3) with high-voltage cable from transmission.

Fig 14: Identifying High Voltage Cable Clamp, Screws And Guide

Disconnect signal connector (1).

Fig 15: Identifying Automatic Transmission Signal Connector

Release screw (1).

Release cable (2).

Fig 16: Identifying Automatic Transmission Screw And Cable

Remove cover (1).

Fig 17: Identifying Automatic Transmission Cover

Unscrew nuts (1).

Tightening torque 18 20 1AZ .

Unfasten screws (2).

Tightening torque, 24 00 1AZ .

Remove exhaust bracket (3).

Fig 18: Identifying Automatic Transmission Exhaust Bracket, Nuts And Screws

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

Release all 6 nuts of electrical machine.

Tightening torque 24 40 2AZ .

Fig 19: Identifying Vibration Damper Recess Nut

Screw on special tool 11 8 910 .

Fig 20: Installing Special Tool (11 8 910)

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:

N55 38.5 mm

Fig 21: Checking Cross Member And Facing Distance

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 .

After completion of work, check transmission fluid level.

Fig 22: Identifying Tensioning Strap, Special Tools (23 4 050) And (00 2 030)

Release screws (1).

Tightening torque 22 32 3AZ .

Fig 23: Identifying Automatic Transmission Screws

Slacken nut (1).

Release grounding cable (2) from transmission mounting bracket.

Tightening torque 24 11 7AZ .

Fig 24: Identifying Transmission Mounting Bracket Grounding Cable And Nut

Slacken nut (1).

Release grounding cables (2) from body.

Tightening torque 24 11 7AZ .

Fig 25: Identifying Body Grounding Cable And Nut

Remove PROPELLER SHAFT

Release screw (1).

Disconnect hydraulic lines (2) to transmission oil cooler.

Tightening torque 17 22 1AZ .

Installation note:

Replace sealing rings.

Keep to installation sequence.

Fig 26: Identifying Transmission Oil Cooler Hydraulic Lines And Screw

Release screw (1).

Release hydraulic lines from holder (2).

Fig 27: Identifying Automatic Transmission Hydraulic Lines And Screw

Release screw (1).

Release wiring harness (2) from transmission.

Fig 28: Identifying Transmission Wiring Harness And Screw

Release screws.

Installation note:

Observe screw fastening sequence without fail.

Tightening torque 24 00 1AZ .

Fig 29: Transmission Housing Bolts Tightening/Loosening Sequence

Installation note:

Tighten down screws/bolts to specified torque.

Special angle-of-rotation tool 00 9 120 with magnet 00 9 130

Attach to vehicle underbody and screw down in accordance with angle of rotation.

Tightening torque 24 00 1AZ .

Fig 30: Attaching Special Tool (00 9 130) And Magnet (00 9 120)

Installation note:

Bore hole (1) of drive plate must be accessible from recess on engine oil sump. Check fitting sleeves (2...3) for correct seating.

Replace damaged fitting sleeves.

Fig 31: Identifying Drive Plate Bore Hole And Fitting Sleeves

Installation note:

Rotate electrical machine until bore hole in electrical machine is flush with bore hole in drive plate.

Flange automatic transmission to engine.

After finishing work:

Connect BMW diagnosis system:

Service functions
Power train
Hybrid car
Electrical machine electronics
Motor position sensor adjustment