Checking brake drum and brake linings for wear

AR42.10-T-1090AA

Checking brake drum and brake linings for wear

10.11.11

1

Remove brake drum

AR42.10-T-1010AA



Checking

2

Check wear limit of brake drum

 If the dimension for the wear limit is dropped below, both brake drums on an axle must always be replaced.

*BE42.10-N-1001-12D

Brake drum, brake discs and flywheel turning device

gotis://B_42/43.2_09.0

3

Inspect surface condition of friction surface of brake drum

 In the event of poor surface quality of the friction surface of the brake drum determine the suitable permissible repair stage and always skim both brake drums on an axle as per the established repair stage.

*BE42.10-N-1001-12D

Brake drum, brake discs and flywheel turning device

gotis://B_42/43.2_09.0

4.1

Check lining thickness and condition of brake linings

 Only perform if the brake drum has not been skimmed.

*BE42.10-N-1001-13D

The wear limit of the brake linings is identified by a stepped edge on the brake lining. If the wear limit is reached the brake shoes must be replaced subject to separate repair order: 

Remove/install brake shoes

AR42.10-T-1020AA

4.2

Install brake linings of a suitable repair stage

 Do this if the brake drum has been machined: 

*BE42.10-N-1001-13D

Remove/install brake linings

AR42.10-T-1040AA

Remove the brake linings to the new diameter of the brake drum less the clearance 

Skimming brake linings

AR42.10-T-1110AA

5

Install brake drum

AR42.10-T-1010AA

Number

Designation

Model
671 with rear axle 748.12/13

BE42.10-N-1001-12D

Brake drum dia.

Normal

mm

410.0...410.2

Repair stage I

mm

411.5...411.7

Repair size II

mm

413.0...413.2

Wear limit

mm

414,5

Number

Designation

Model 671
with rear axle
748.12/13

BE42.10-N-1001-13D

Brake lining thickness

Regular (A)

mm

18.7...19.0

Repair stage I

mm

19.5...19.8

Repair size II

mm

20.2...20.5

Minimum lining thickness (B)

mm

5

See picture

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