Dismantling and assembling multi-disk brake B1

AR27.50-P-0870A

Dismantling and assembling multi-disk brake B1

2.11.94

25.8.98

New special tool for setting clearance

AR27.50-P-0870-01A

16.9.02

Multi-disks for B1, K1 and K3 changed

Transmission 722.6 as of 02.09.02, refer to step 10.

BT27.50-P-0013-01A



Dismantling

1

Remove snap ring (6h)

2

Remove multi-disk pack (6g) and spring washer (6f) from external plate carrier

 Check multi-disks for scorch marks and wear.

3

Place assembly device (073) on spring washer (6d) and tension until the snap ring (6e) is exposed

 Assembly device

*140589134300

4

Remove snap ring (6e)

5

Remove piston (6c) from the external plate carrier by carefully blowing compressed air into the bore (A).



Assemble

6

Install piston (6c) in external plate carrier

 Inspect molded gasket, replace if necessary.

 Press in the piston with the assistance of the spring washer (6d) and the assembly device (073).

7

Insert spring washer (6d)

 Insert spring washer with the curvature towards the multi-disk pack.

8

Place assembly device (073) on spring washer (6d) and tension until the groove of the snap ring is exposed

 Assembly device

*140589134300

9

Insert snap ring (6e)

 The collar of the snap ring must point towards the multi-disk pack.

After installing, check snap ring for correct seat

10

Insert spring washer (6f) and multi-disk pack (6g) in the external plate carrier and measure

 Observe outer multi-disk sequence

Inserting and measuring multi-disk pack B1: 

TRANSMISSION 722.6 up to 01.09.02

AR27.50-P-0870-01A

 Pressing tool

*208589002100

Clearance of multi-disk brake B1

*BE27.50-P-1001-02B

Transmission 722.6 as of 02.09.02

AR27.50-P-0870-01AA

 Pressing tool

*208589002100

Clearance of multi-disk brake B1

*BE27.50-P-1001-02B



Thickness of steel multi-disks B1, K1 and K2 changed

Transmission 722.6

BT27.51-P-0002-01A



External plate carrier B1 modified

Transmission 722.6

BT27.50-P-0008-01A



Multi-disks for B1, K1 and K3 changed

Transmission 722.6 as of 02.09.02

BT27.50-P-0013-01A



Survey of multi-disk components, production details

Transmission 722.6

GF27.51-P-5200A

11

Insert snap ring (6h)

 For additional work, see: 

Remove/install multi-disk brake B1 and oil pump

AR27.50-P-0721A

Number

Designation

Transmission 722.6 up to 01.09.02
with double sided multi-disks

Transmission 722.6 as of 02.09.02
with single-sided multi-disks

BE27.50-P-1001-02B

Clearance of multi-disk brake B1

Number of multi-disks

2

mm

2.30...2.70

2.20...2.60

3

mm

2.70...3.10

2.40...2.80

4

mm

3.00...3.40

2.60...3.00