Disassemble/assemble multi-disk brake B2

AR27.50-P-0880A

Disassemble/assemble multi-disk brake B2

11.12.07

4.12.07

Reference to modified end disk inserted

Step 16

BT27.50-P-0015-01W



Removing

1

Remove disk pack B2 (134)

AR27.50-P-0781A



Disassemble

2

Remove snap ring (134a)

3

Remove disk pack B2 (134) and disk spring (134b) from external plate carrier B2

 The external plate carrier B2 for the multidisk brake B2 also serves as the piston B3 for the multidisk brake B3.

 Check multi-disks for scorch marks and wear.

4

Place assembly device (074) on disk spring (29) and tension until groove for snap ring (31) is exposed (picture C)



*140589134300

5

Remove snap ring (31)

6

Remove spring plate (30) and disk spring (29)

7

Separate piston guide ring (28) and piston/multidisk brake B2 (27) from piston B3 (14a); to do so, blow compressed air into hole (D) (picture E)

8

Press piston guide ring (28) out of piston B2 (27)



Peak-to-valley height on piston B2 changed

BT27.50-P-0009-01A



Piston B2 modified

BT27.50-P-0010-01A

9

Separate piston guide (32) from piston B3 (14a); to do so, blow compressed air into hole (A) (picture E)



Assemble

10

Assemble piston guide (32) and piston B3 (14a) at correct position

AR27.50-P-0880-01A

11

Insert piston/multidisk brake B2 (27) into piston B3 (14a)

 Check all seal rings; replace if necessary

 With seal rings (14c), (28a) and (28b), the rounded edges must face outward.

With seal ring (14d), the rounded edges must face inward.

(Picture B)

12

Insert piston guide ring (28)

 The valve (137) in the piston guide ring must be at the top (picture D).

13

Insert disk spring (29) and spring plate (30)

 Insert the disk spring with the curvature toward the spring plate.

14

Place assembly device (074) on disk spring (29) and tension until groove for snap ring (31) is exposed



*140589134300

15

Insert snap ring (31)

16

Insert disk spring (134b) and disk pack B2 (134) into external plate carrier B2 and measure

 Observe externally-toothed plate sequence.

AR27.50-P-0880-02A

Play in multiple-disc brake B2

*BE27.50-P-1002-02B



*208589002100



Survey of multi-disk components, production details

GF27.51-P-5200A



End disk modified

BT27.50-P-0015-01W

17

Attach snap ring (134a)



Install

18

Install disk pack B2 (134).

AR27.50-P-0781A

Number

Designation

Trans-mission 722.6

BE27.50-P-1002-02B

Play in multiple-disc brake B2

Number of multiple-discs

4

mm

1.90...2.30

5

mm

2.00...2.40

6

mm

-