ap4220b4241a

Check automatic handbrake adjuster

Type ap · emne 42.20 · version 0101 · 2016-02-12

Gælder for: Vehicle 688 with Cumbustion engine 374.953, 374.986, 374.988, 374.991, 374.993, 374.996, 906.924

Ikke tilgængelig på “da”; vises på Engelsk.

Placering

Funktionsgruppe 2 Chassis › 42 Bremsehydraulik og -mekanik › 42.20 Parkeringsbremse — Serie 374 (modeller 953, 986, 988, 991, 993, 996) · Serie 688 · Serie 906 (modeller 924)

EinPAS 21 bremser/vakuumsystem/trykluftsystem › 21.16 Parkeringsbremse › 21.16.40 Parkeringsbremse — Serie 374 (modeller 953, 986, 988, 991, 993, 996) · Serie 688 · Serie 906 (modeller 924)

AP42.20-B-4241A

Check automatic handbrake adjuster

12.02.16

Vehicle 688 with Cumbustion engine 374.953, 374.986, 374.988, 374.991, 374.993, 374.996, 906.924

Check automatic handbrake adjuster

B42.10-0351-06

1 Expansion plug

2 Rod

3 Sealing ring

4 Spring pin

5 Piston

6 Actuator

7 Plug

8 Auger pinion

9 Lock

10 Sealant

11 Zerk fitting

12 Adjuster case

13 Sealing ring

14 Gear

15 Seal

16 Bushing

17 Yoke

18 Large cotter pin

19 Yoke largest pin

20 Yoke smallest pin

21 Small cotter pin

22 Regulator assembly

Check automatic handbrake adjuster

B42.10-0308-06

23 Sealing ring removal

24 Spring pin removal

25 Control gear removal

Unmount and mount

1

Remove the lever (17)

Large pin housing diameter

*BE42.10-B-1002-15A

Small pin diameter

*BE42.10-B-1005-15A

Large pin diameter

*BE42.10-B-1006-15A

2

Remove the plug (7)

Check the teeth at the end of the plug (7), replace it if there are signs of damage.

3

Remove the plug (1) and remove actuator assembly

Use a screwdriver as a lever to facilitate removing the expansion plug (1).

Install a new expansion plug (23).

If necessary, replace the actuator (6).

4

Remove the sealing ring (3) from the actuator assembly

During assembly, install a new sealing ring (3).

5

Remove spring pin (4) from the actuator rod and piston

Spring pin diameter

*BE42.10-B-1004-15A

Spring pin housing diameter

*BE42.10-B-1003-15A

6

Remove the sealant (10) and the latch (9)

During the assembly, install a new sealant (10).

7

Remove the auger pinion (8)

To remove the auger pinion, turn adjustment nut.

Install: Turn the adjustment nut counterclockwise. If the torque to rotate the nut is greater than 2.8 Nm, the adjuster will not work properly.

8

Remove the gear (14) and the seal (15)

Use a proper quill to remove and install the seal (15).

Gear housing diameter

*BE42.10-B-1001-15A

9

Remove sealing ring (13)

During assembly, install a new sealing ring (13).

10

Wash all metal parts using solvent

11

Install in reverse order

Check values for rear brake pad

Número

Denominação

Chassis 688.156 with rear axle 743.415

BE42.10-B-1001-15A

Maximum diameter of the gear housing

mm

61.25

BE42.10-B-1002-15A

Maximum diameter of the larger pin housing.

mm

12.78

BE42.10-B-1003-15A

Maximum diameter of the elastic pin housing.

mm

4.95

BE42.10-B-1004-15A

Elastic pin diameter.

mm

4.65

BE42.10-B-1005-15A

Smaller pin diameter.

mm

6.12

BE42.10-B-1006-15A

Larger pin diameter.

mm

12.42