Detach/attach external plate carrier B08 on torque converter housing

AR27.50-S-0617EA

Detach/attach external plate carrier B08 on torque converter housing

20.07.2020

Transmission

725.0 in model 447, 448

2

Torque converter housing

3

Drive gear

4

Chain

5

Oil pump gear

8

Bolts

9

Externally-toothed disk carrier B08

10

Seal

2

Torque converter housing

9

Externally-toothed disk carrier B08

11

Ram

 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

 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

Topical note

General information on repair work on transmission

AH27.00-S-1000-01PS



Remove

1

Remove planetary gear set 1 with multiplate clutch K81 and multidisk brake B08.

AR27.50-S-0625EA

2

Remove drive gear (3), chain (4) and oil pump gear (5) together.

AR27.10-S-0400EA

3

Loosen screws/bolts (8).


Do not unscrew bolts (8) completely.
Otherwise the outer plate carrier B08 (9) will fall down when pressed out and be damaged.

4

Press outer plate carrier B08 (9) out of torque converter housing (2).


Make sure that the contact surface of the ram (11) is flush fitted.
Otherwise the outer plate carrierB08(9) will be damaged.

 Press out the outer plate carrier B08 (9) far enough until it can be removed from below.

 Commercially available devices/tools
Workshop press

5

Unscrew screws (8) and remove outer plate carrier B08 (9).

6

Remove seal (10).



Install

7

Position new seal (10) on outer plate carrier B08 (9).

8

Position outer plate carrier B08 (9) with seal (10) on torque converter housing (2).

9

Position two screws (8) as guide.

10

Press outer plate carrier B08 (9) into torque converter housing (2).


Make sure that the contact surface of the ram (11) is flush fitted.
Otherwise the outer plate carrierB08(9) will be damaged.

 Commercially available devices/tools
Workshop press

11

Screw in screws (8).

 Screw/bolt, torque converter housing to external plate carrier

*BA27.10-N-1003-06EA



Measure

12

Measure clearance of multidisk brake B08 and adjust.

If outer plate carrier B08 (9) has been replaced.

AR27.51-S-7230-02EA

 Commercially available devices/tools
Workshop press
Digital vernier caliper

Clearance in multidisk brake B08

*BE27.51-P-1003-01E

 Pressing tool

*722589013100

 Parallel support

*168589032100

 Pressure cylinder

*725589033100

 Set of drifts

*722589041500

13

Install drive gear (3), chain (4) and oil pump gear (5) together.

AR27.10-S-0400EA

14

Install planetary gear set 1 with multiplate clutch K81 and multidisk brake B08.

AR27.50-S-0625EA

Adjustment values for multidisk clutch/multidisk brake

Number

Designation

Transmission 725.0

BE27.51-P-1003-01E

Clearance in multidisk brake B08

Contact force for clearance adjustment

F1

N

600

Number of internal plates

3

mm

1,6…1,8

4

mm

1,8…2,0

 Automatic transmission complete

Number

Designation

Transmission 725.0 in model 447, 448

BA27.10-N-1003-06EA

Screw/bolt, torque converter housing to external plate carrier

M6

Nm

10