Remove/install automatic transmission

AR27.10-S-0005EA

Remove/install automatic transmission

02.09.2020

Model

447 with transmission 725.0

except code ZG2 (Permanent all-wheel drive)

Model

448 with transmission 725.0

Modification notes

20.07.2020

Work procedure revised

The whole document

Shown with engine 654.9

16

Counterholder

17

Belt pulley

Shown with engine 654.9

2

Locking clamp

3

Bayonet coupling

4

Bolts

5

Electrical wiring harness

6

Bracket

18

Cover

Shown with engine 654.9

1

Automatic transmission

7

Mounting clip

8

AdBlue® line

9

Screw

10

Ground cable

Shown with engine 654.9

1

Automatic transmission

11

Screw

12

Torque converter

Shown with engine 654.9

13

Drive plate

14

Threaded unions

15

Holding device

19

Lifting device

 Warning

Risk of injury. Moving parts can pinch, crush or, in extreme cases even sever extremities.

No parts of the body or limbs should be within the operating area of mechanical components when moving components.

AS00.00-Z-0009-01A

 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

General information on repair work on transmission

AH27.00-S-1000-01PS

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Notes on automatic transmission

AH27.19-P-0001-01NKB



Remove

1

Switch on ignition.

 Hood and doors must be closed.

2

Release parking brake.

3

Shift automatic transmission (1) using selector lever to "Permanent N".

 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

Remove ground line of battery.

AR54.10-S-0003E

6

Remove resonator box.

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR09.20-S-0010EA

7

Position counterholder (16) on belt pulley (17).

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

 Counterholder

*654589004000

8

Position a suitable tool on counterholder (16) to turn the crankshaft.

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

 Counterholder

*654589004000

9

Remove lower engine compartment paneling.

AR61.20-S-1105E

10

Remove underfloor paneling at left.

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR61.30-S-1001E

11

Attach holding device (15).

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR01.10-S-2400-18EA

Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with engine 274 with transmission 725.0

AR01.10-S-2400-04E

 Adjust support of  holding device (15) to a gap of 10 mm relative to underside of timing case.

 Holding device

*447589006200

12

Remove propeller shaft.

Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with engine 274 with transmission 725.0

AR41.10-S-0050E

13.1

Remove transmission carrier.

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR22.10-S-0006E

13.2

Remove engine crossmember at rear.

Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with transmission 725.0

AR22.10-S-1170E

14

Remove transmission mount.

Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with engine 274 with transmission 725.0

AR22.10-S-0007E

15

Remove heat shield.

AR27.40-S-0700-02E

16

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

17

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

18.1

Remove oil lines for automatic transmission oil cooling system.

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR27.55-S-0600EA

18.2

Remove oil lines for automatic transmission oil cooling system and fasten outside the working area.

Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with transmission 725.0

AR27.55-S-0600EG

19

Remove automatic transmission oil cooler.

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR27.55-S-1000EA

20

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

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

21

Remove cover (18).

22

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

AR27.20-S-0001-01EA

 Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
To continue turning the crankshaft, reach from below between the electric coolant pump and the longitudinal member.

 Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with transmission 725.0
Socket wrench bit

*001589650900

 Long wedge

*115589035900

 Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Counterholder

*654589004000

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.

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR15.30-S-7100EB

Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with engine 274 with transmission 725.0

AR15.30-S-7100EG

25

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

 Unscrew screw (9) to do this.

26

Remove screws (11).

27

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

 Aid of helper required.

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.

Model 447 with engine 654.9 with transmission 725.0
except 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).

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR03.30-S-8003EA

Model 447, 448 with transmission 725

AR03.30-S-8003EG



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



000 588 00 31 00 Assembly stand for cars

WS01.00-N-3028B


Make sure  lifting device (19) is correctly seated in cutouts (arrows) on automatic transmission (1) and check by rattling on 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) into installation position.

38

Screw in screws (11).

 Screw, torque converter housing to timing case/crankcase

*BA27.10-N-1001-06EA

39

Position and attach ground line (10).

 To do so, screw in screw (9).

 Screw, torque converter housing to timing case/crankcase

*BA27.10-N-1001-06EA

40

Install starter.

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR15.30-S-7100EB

Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with engine 274 with transmission 725.0

AR15.30-S-7100EG

41

Mount torque converter (12) onto 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

 Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
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

 Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with transmission 725.0
Socket wrench bit

*001589650900

 Long wedge

*115589035900

 Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Counterholder

*654589004000

42

Install cover (18).

43

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

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

44

Install automatic transmission oil cooler.

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR27.55-S-1000EA

45.1

Install oil lines of automatic transmission oil cooling system.

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR27.55-S-0600EA

45.2

Attach oil lines for automatic transmission oil cooling system.

Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with transmission 725.0

AR27.55-S-0600EG

46

Position holder (6) with electrical wiring harness (5) and attach.

 Screw in screw/bolts (4) to do this.

47

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

48

Install heat shield.

AR27.40-S-0700-02E

 Bolt, leaf spring for heat shield to transmission housing

*BA27.10-N-1008-06EA

 Bolt, heat shield to oil pan

*BA27.10-N-1009-06EA

49

Install transmission mount.

Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with engine 274 with transmission 725.0

AR22.10-S-0007E

50.1

Install transmission carrier.

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR22.10-S-0006E

50.2

Install engine crossmember at rear.

Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with engine 274 with transmission 725.0

AR22.10-S-1170E

51

Install propeller shaft.

Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with engine 274 with transmission 725.0

AR41.10-S-0050E

52

Remove holding device (15).

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR01.10-S-2400-18EA

Model 447 with engine 274 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)
Model 448 with transmission 725.0

AR01.10-S-2400-04E

 Holding device

*447589006200

53

Remove tool for turning crankshaft from counterholder (16).

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

 Counterholder

*654589004000

54

Remove counterholder (16) from belt pulley (17).

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

 Counterholder

*654589004000

55

Install resonator box.

Model 447 with engine 654.9 with transmission 725.0
except code ZG2 (Permanent all-wheel drive)

AR09.20-S-0010EA

56

Install ground line of battery.

AR54.10-S-0003E

57

Read out and delete fault memory.



AD00.00-S-2000-04E

 Do not yet remove vehicle diagnosis system.

58

Fill automatic transmission (1) with automatic transmission fluid.

AR27.00-S-0270EA

 Do not yet remove vehicle diagnosis system.

59

Perform transmission adaptation with vehicle diagnosis system.

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



AD00.00-S-2000-04E

 Do not yet remove vehicle diagnosis system.

60

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

If torque converter (12) has been replaced.



AD00.00-S-2000-04E

61

Remove vehicle diagnosis system.

 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.

Model 447 with engine 654.9 with transmission 725.0
except 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

 Automatic transmission complete

Number

Designation

Transmission 725.0 in model 447, 448

BA27.10-N-1008-06EA

Bolt, leaf spring for heat shield to transmission housing

Nm

5

 Automatic transmission complete

Number

Designation

Transmission 725.0 in model 447, 448

BA27.10-N-1009-06EA

Bolt, heat shield to oil pan

Nm

9

 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