PREVOST H3-41 Maintenance Manual page 435

Example 2)
E=0.453 in (11.5 mm)
F=0.512 in (13 mm) > OK
FIGURE 23: EXAGGERATED
BETWEEN INNER AND OUTER BRAKE PADS
Exaggerated tangential oblique wear of brake
pads
The total thickness of the friction material at
either end of the pad should be equal. If the
difference between the two ends is greater than
2 mm, then the following checks are necessary:
• Bearing clearance check (see 18.2.7 to
18.2.9).
• Free movement of the brake pads in the
caliper (see 18.2.6).
• Possible collision with other parts on the
axle or vehicle body.
• Excessive dirt and grime present.
• Piping of the compressed air line. In
addition, the piping must be replaced.
Example 1)
G=21 mm
H=18 mm > NOT OK
Example 2)
G=18 mm
H=19 mm > OK
WEAR DIFFERENCE
PA1621 Maintenance Manual All Series | Revised June 2020
SECTION 12: BRAKE AND AIR SYSTEM
FIGURE 24: EXAGGERATED TANGENTIAL OBLIQUE
WEAR OF BRAKE PADS
Exaggerated taper wear of brake pads
The total thickness of the friction material in the
radial direction should be equal. If the difference
between the top and bottom ends is greater than
1 mm, then the following checks are necessary:
• Bearing clearance check ((see 18.2.7 to
18.2.9).
• Free movement of the brake pads in the
caliper (see 18.2.6).
• Possible collision with other parts on the
axle or vehicle body.
• Excessive dirt and grime present.
FIGURE 25: BRAKE PAD WITH EXAGGERATED TAPER
WEAR
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