Remove/install automatic transmission

AR27.10-S-0005EB

Remove/install automatic transmission

25.08.2020

Transmission

725.0 in model 447

with code ZG2 (Permanent all-wheel drive)

16

Counterholder

17

Belt pulley/vibration damper

2

Locking clamp

3

Bayonet coupling

4

Screw

5

Electrical wiring harness

6

Bracket

18

Cover

1

Automatic transmission

7

Mounting clip

8

AdBlue® line

9

Screw

10

Ground cable

1

Automatic transmission

11

Screw

12

Torque converter

13

Drive plate

14

Threaded unions

15

Wooden block

19

Lifting device

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

 Caution

Risk of injury to skin and eyes due to handling of transmission oil. Health risk caused by swallowing transmission oil

Wear protective gloves, protective clothing and safety glasses.
Do not pour transmission oil into beverage bottles.

AS00.40-Z-0001-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

General information on repair work on transmission

AH27.00-S-1000-01PS

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A



Remove

1

Switch on ignition.

 Hood and doors must be closed.

2

Release parking brake.

3

Shift automatic transmission to "Permanent N" using selector lever.

 The display of the instrument cluster shows the message:
"Permanent N activated, risk of rolling".

4

Switch off ignition.

 Do not remove the transmitter key.
The transmitter key must remain inserted during the entire repair, otherwise the vehicle will switch to the park position.

5

Disconnect ground line from battery.

AR54.10-S-0003E

6

Remove resonator box.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR09.20-S-0010EA

7

Position counterholder (16) on belt pulley/vibration damper (17).

 Counterholder

*654589004000

8

Position suitable tool for rotating crankshaft on counterholder (16).

9

Remove lower engine compartment paneling.

AR61.20-S-1105E

10

Remove underfloor paneling at left.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR61.30-S-1001E

11

Support engine timing case using a wooden block (15).

 Thickness of wooden block (15) approx. 20 mm.

12

Remove transmission carrier.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR22.10-S-0006E

13

Remove propeller shaft.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR41.10-S-0050E

14

Remove NO x sensor from exhaust pipe.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR49.20-S-2063EA

15

Remove front axle differential propeller shaft from front axle differential and from automatic transmission (1).

Transmission 725.0 in model 447 with engine 654
with code ZG2 (Permanent all-wheel drive)

AR41.10-S-0070EA

16

Fix front axle differential propeller shaft in place on automatic transmission (1) using cable ties.

17

Unlock securing bracket (2) (arrow A) and remove bayonet coupling (3) from electrohydraulic controller unit.

18

Remove screws (4) and place electrical wiring harness (5) with holder (6) to one side.

19

Remove coolant lines from automatic transmission oil cooler and release automatic transmission oil cooler.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR27.55-S-1000EA

 Do not remove transmission oil lines.

20

Detach retaining clip (7) from torque converter housing and place AdBlue® line (8) to one side.

21

Remove cover (18).

22

Remove torque converter(12) from drive plate (13).

AR27.20-S-0001-01EA

 To continue turning the crankshaft, reach from below between the electric coolant pump and the longitudinal member.

 Counterholder

*654589004000

 Long wedge

*115589035900

23

Secure automatic transmission (1) on mounting plate.



000 588 11 62 00 Major assembly mount

WS01.00-P-0092B



000 588 10 62 00 Support plate

WS26.00-P-3309B

24

Remove starter, place to one side with lines still connected and secure.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR15.30-S-7100EC

25

Remove screw (9) and place ground line (10) to one side.

26

Remove screws (11).

27

Remove automatic transmission (1) together with torque converter (12).

28

Secure torque converter (12) with cable ties to prevent it from falling out.

29

Fasten automatic transmission (1) to assembly stand.

If further work is to be performed on the transmission (1).

AR27.10-S-0600-01EA



000 588 00 31 00 Assembly stand for cars

WS01.00-N-3028B

 Commercially available devices/tools
Workshop crane

 Lifting device

*724589026300

 Support fixture

*725589004000

30.1

Drain automatic transmission fluid from torque converter (12).

If the torque converter (12) is removed or replaced.



AP27.00-S-2702EG

30.2

Drain automatic transmission fluid from automatic transmission (1).

If the automatic transmission (1) is replaced or if further work is carried out on the automatic transmission (1).

AR27.10-S-7031EA

31

Move automatic transmission (1) to vertical position, remove cable ties and remove torque converter (12).

If the torque converter (12) is replaced or if it has to be removed for further work on the automatic transmission (1).

AR27.20-S-0500-01EA

 Direct torque converter housing upwards.

 Assembly device

*725589013100



Clean

32

Remove corrosion from crankshaft.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR03.20-S-1000-01EA

Assembly cleaner

*BR00.45-Z-1028-04A



Check

33

Check threaded unions (14) in drive plate(13).

If the threaded unions (14) are loose or damaged,



replace drive plate(13).

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR03.30-S-8003EA



Install

34

Insert torque converter (12) and secure with cable ties to prevent it from falling out.

If the torque converter (12) was removed.

AR27.20-S-0500-01EA

 Commercially available devices/tools
Digital vernier caliper

Protrusion of torque converter to torque converter housing

*BE27.20-N-1001-01EA

Long-life grease

*BR00.45-Z-1001-06A

 Parallel support

*168589032100

 Support fixture

*725589004000

 Assembly device

*725589013100

35

Attach lifting device (19) to automatic transmission (1), remove automatic transmission (1) from assembly stand using an engine hoist and secure on mounting plate.

If the automatic transmission (1) was secured to the assembly stand.



000 588 11 62 00 Major assembly mount

WS01.00-P-0092B



000 588 10 62 00 Support plate

WS26.00-P-3309B


Ensure that the  lifting device (19) is seated correctly in the cutouts (arrows) on the automatic transmission (1) and check by rattling the  lifting device (19).
Otherwise damage will occur.

 Commercially available devices/tools
Workshop crane

 Lifting device

*724589026300

36

Remove cable ties from torque converter (12).

37

Position automatic transmission (1) together with torque converter (12) on timing case.

38

Screw in screws (11).

 Screw, torque converter housing to timing case/crankcase

*BA27.10-N-1001-06EA

39

Position ground line (10) and screw in screw (9).

 Screw, torque converter housing to timing case/crankcase

*BA27.10-N-1001-06EA

40

Install starter.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR15.30-S-7100EC

41

Attach torque converter (12) to drive plate (13).

AR27.20-S-0001-01EA

Topical note

Notes on threaded connections fastened using a tightening angle-based tightening process

AH00.00-P-0020-01A

 To continue turning the crankshaft, reach from below between the electric coolant pump and the longitudinal member.

 Screw/bolt, torque converter to drive plate

*BA27.20-N-1001-01EA

 Counterholder

*654589004000

 Long wedge

*115589035900

42

Install cover (18).

43

Position AdBlue® line (8) and clip retaining clip (7) onto torque converter housing.

44

Attach automatic transmission oil cooler and coolant lines to automatic transmission oil cooler.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR27.55-S-1000EA

45

Position holder (6) with electrical wiring harness (5) and screw in screws (4).

46

Attach bayonet coupling (3) to electrohydraulic controller unit and lock securing bracket (2).

47

Remove cable ties from front axle differential propeller shaft.

48

Mount front axle differential propeller shaft.

Transmission 725.0 in model 447 with engine 654
with code ZG2 (Permanent all-wheel drive)

AR41.10-S-0070EA

49

Mount NO x sensor onto exhaust pipe.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR49.20-S-2063EA

50

Install propeller shaft.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR41.10-S-0050E

51

Install transmission carrier.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR22.10-S-0006E

52

Remove wooden block (15).

53

Remove tool for turning crankshaft from counterholder (16).

54

Remove counterholder (16) from belt pulley/vibration damper (17).

55

Install resonator box.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR09.20-S-0010EA

56

Connect ground line to battery.

AR54.10-S-0003E

57

Correct coolant level and check engine cooling system for leak tightness.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR20.00-S-1011E

58

Fill automatic transmission (1) with automatic transmission fluid.

If the automatic transmission (1) was replaced or repaired or the torque converter (12) was removed.

AR27.00-S-0270EA

59

Read out and delete fault memory.



AD00.00-S-2000-04E

60

Perform transmission adaptation with vehicle diagnosis system.

If automatic transmission (1) has been replaced or repaired.



AD00.00-S-2000-04E

61

Reset service life data for torque converter lockup clutch using diagnostic system.

If torque converter (12) has been replaced.



AD00.00-S-2000-04E

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

62

Conduct engine test run and check automatic transmission (1) for proper operation and leak tightness.

63

Install underfloor paneling at left.

Transmission 725.0 in model 447 with engine 654.9
with code ZG2 (Permanent all-wheel drive)

AR61.30-S-1001E

64

Install lower engine compartment paneling.

AR61.20-S-1105E

Check values for torque converter

Number

Designation

Transmission 725.0 in model 447 with engine 654.9

Transmission 725.0 in model 447, 448 with engine 274

BE27.20-N-1001-01EA

Protrusion of torque converter to torque converter housing

mm

21,2 (2)

31,2 (2)

 Automatic transmission complete

Number

Designation

Transmission 725.0 in model 447, 448

BA27.10-N-1001-06EA

Screw, torque converter housing to timing case/crankcase

Nm

38

 Torque converter

Number

Designation

Transmission 725.0 in model 447, 448

BA27.20-N-1001-01EA

Screw/bolt, torque converter to drive plate

Stage 1

Nm

3

Stage 2

Nm

30

Stage 3

°

90

Repair materials

Number

Designation

Order number

BR00.45-Z-1001-06A

Long-life grease

A 000 989 63 51 11

BR00.45-Z-1028-04A

Assembly cleaner

A 000 986 56 01