Measure and adjust clearance

AR27.51-D-7229WE

Measure and adjust clearance

21.12.11



Measure

1

Place multidisk brake or multidisk clutch in a lever press

 Before the clearance measurement the disks must be immersed in automatic transmission fluid for at least one hour so that the friction lining can swell up.

2

Put drifts of the thrust device on the end disk (105)

 Position the drifts on the end disk (105) so that slipping off during the pressing process is prevented. Otherwise the disks (105) may break.

 Thrust device

*722589013100

 Drift set

*722589041500

3

Operate lever press

 The markings (M1) to (M4) identify the required contact force. Disks and plate supports are damaged if the contact force is exceeded.

(M1) applies to multidisk brake B1

(M3) applies to multidisk brake B2

(M1) applies to multidisk brake B3

(M2) applies to multidisk clutch K1

(M4) applies to multidisk clutch K2

(M1) applies to multidisk clutch K3

4

Put on parallel support

 Parallel support

*126589043100

5

Determine distance between the parallel surface upper edge and end disk (105) using depth gauge (T)

 Determine distance at two points of the circumference of the end disk (105) and note the mean value as dimension "a".

6

Move back lever press

7

Press end disk (105) against the retaining ring (105s)

 Attach the tool (e.g. screwdriver) carefully between end disk (105) and first friction plate (arrow). The end disk (105) and the friction plate will be bent otherwise and, as a consequence, the friction lining will be damaged.

8

Determine distance between the parallel surface upper edge and end disk (105) using depth gauge (T)

 Determine distance at two points of the circumference of the end disk (105) and note the mean value as dimension "a".

 The difference from measurements "a" and "b" gives the clearance.

Adjust clearance

9

Remove retaining ring (105s) and determine its thickness

10

Adjust clearance; to do this, install retaining ring (105s) of appropriate thickness.

 Retaining rings (105s) are available in a graduation of 0.3 mm.

Multidisk brake B1

*BE27.50-N-1001-02B

Multidisk brake B2

*BE27.50-N-1002-02B

Multidisk brake B3

*BE27.50-N-1003-02B

Multidisk clutch K1

*BE27.51-N-1001-01C

Multidisk clutch K2

*BE27.51-N-1002-01C

Multidisk clutch K3

*BE27.51-N-1003-01C

Number

Designation

Trans-mission 722.9

BE27.50-N-1001-02B

Play in multiple-disc brake B1

Contact force for clearance adjustment B1

M1

N

600

Number of multiple-discs

3

mm

2.00...2.40

4

mm

2.20...2.60

BE27.50-N-1002-02B

Play in multiple-disc brake B2

Contact force for clearance adjustment B2

M3

N

1000

Number of disks of internally toothed plates

4

mm

1.70...2.10

5

mm

1.80...2.20

Number of disks of externally toothed plates

5

mm

1.70...2.10

6

mm

1.80...2.20

BE27.50-N-1003-02B

Play in multiple-disc brake B3

Contact force for clearance adjustment B3

M1

N

600

Number of multiple-discs

3

mm

2.00...2.40

4

mm

2.20...2.60

5

mm

2.30...2.70

Number

Designation

Trans-mission
722.9

BE27.51-N-1001-01C

Play in multiple-disc clutch K1

Contact force for clearance adjustment K1

M2

N

800

Number of internal plates

3

mm

2.00...2.40

4

mm

2.20...2.60

5

mm

2.40...2.80

6

mm

-

BE27.51-N-1002-01C

Play in multiple-disc clutch K2

Contact force for clearance adjustment K2

M4

N

1200

Number of internal plates

3

mm

1.70...2.10

4

mm

1.90...2.30

5

mm

2.10...2.50

6

mm

2.20...2.60

7

mm

-

8

mm

-

BE27.51-N-1003-01C

Play in multiple-disc clutch K3

Contact force for clearance adjustment K3

M1

N

600

Number of internal plates

3

mm

-

4

mm

2.20...2.60

5

mm

2.40...2.80