Drum Brake Inspection

1
Drum Brake Inspection
2

• Mark the stud next to the valve stem
• (Balance)

3

• Mark the drum to keep the balance

4
Drum Removal

• Lock screw / s

5
Drum Removal

• FWD cars

6
Drum Removal
FWD cars
7
Drum Removal

• Groves from the rivets wearing into the drum.
• The last brake job...
• the drums werent turned

8
Riveted Lining

• Rivets hold the lining better, but can wear the
  drums if not replaced soon enough

9
Drum Removal
10
Drum Removal
11
Worn Drums

• Scored
• Bell Mouthed
• Concaved

12
Max. Drum size

• Why is this important

13

• Non Servo brake lining
• Servo Brake lining
• Primary
• Secondary

14
Servo
Non-Servo
15
Check the Wheel Cylinders for leaks
16
Adjusters

• Check them for wear
• Frozen

17
Axle Seals

• Inside Leak
• Outside Leak