Remove/install clutch pack BR, multidisk brake B2 and park pawl gear

AR27.50-D-0782TSR

Remove/install clutch pack BR, multidisk brake B2 and park pawl gear

18.07.2019

Transmission

722.9 in model 907

1

Transmission housing

5t

Disk spring

6s

Screw

5

Clutch pack BR

6

B2 multidisk brake

7

Park pawl gear

5s

Retaining ring

 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 threaded connections fastened using a tightening angle-based tightening process

AH00.00-P-0020-01A

Notes on automatic transmission

AH27.19-P-0001-01NKB



Remove

1

Remove transmission housing (1) from torque converter housing.

AR27.50-D-0601TSR

2

Push clutch pack BR (5) together.

3

Remove retaining ring (5s).

4

Remove clutch pack BR (5).

5

Remove disk spring (5t).

6

Remove screws (6s).

7

Remove multidisk brake B2 (6).

8

Remove parking lock gear (7).



Check

9

Check multidisk brake B2 (6) for scorch marks and wear.

If scorch marks or worn disks are apparent.



Replace disks of multidisk brake B2 (6).

Disassemble/assemble multi-disk brake B2

AR27.50-D-0880TSR

10

Check clutch pack BR (5) for scorch marks and wear.

If scorch marks or worn disks are apparent.



Replace disks of clutch pack BR (5).

11

Check parking lock gear (7) for damage.

If damage is visible,



Replace parking lock gear (7).



Install

12

Lay new disks at least 1 h in transmission oil.

When replacing the disks.



Automatic transmission fluids (ATF) (specification 236.15)

BB00.40-P-0236-15A

13

Install parking lock gear (7).

14

Install multidisk brake B2 (6).


The external plate carrier of the multidisk brake B2 (6) is simultaneously the piston of clutch pack BR (5) and must not tilt over.
Otherwise function of clutch pack BR (5) is not ensured.

15

Screw in new screws (6s).

 Before tightening the screws/bolts (6s), press the external plate carrier from inside against the park pawl gear (7).

 Bolt, multi-disk brake B2 to transmission housing

*BA27.40-N-1003-01I

16

Install disk spring (5t).

 Insert disk spring (5t) in such a way that the curvature of the inner circumference points toward the multidisk brake B2 (6).

17

Install clutch pack BR (5).

18

Push clutch pack BR (5) together.

19

Install retaining ring (5s).



Measure

20

Measure and adjust clearance of multidisk brake BR (5).

AR27.51-D-7229-01TSR

 The thickness of the retaining ring (5s) determines the clearance.

 Commercially available devices/tools
Feeler gage
Outside micrometer

Clearance of multi-disk brake BR

*BE27.50-N-1004-02B

21

Install transmission housing (1) at torque converter housing.

AR27.50-D-0601TSR

Set values for multi-disk brake

Number

Designation

Transmission 722.9

BE27.50-N-1004-02B

Clearance of multi-disk brake BR

mm

1,00...1,40

 Housing

Number

Designation

Transmission 722.9

BA27.40-N-1003-01I

Bolt, multi-disk brake B2 to transmission housing

Stage 1

Nm

10

Stage 2

°

90