Page No.10
NDS2 issue A
Spicer SpecialityAxle Division - Technical Publications
© Spicer Speciality Axle Division
EVALUATION OF BRAKE DISC SURFACE
Upon removal of brake disc Fig. 9. It's surface
should be checked for defects. Inspection should
cover both sides of the braking surface as well as
the outer diameter of the disc.
Brake disc thickness should be checked in
accordance with manufacturers dimensional
recommendations.
You should inspect for the following:-
• Heat checking
• Cracks
• Grooves - scoring
• Blue marks - Banding
• Polished discs
Heat checking can be light or heavy,
If light heat checking type cracks (fine and light)
are found as shown in Fig.10 the disc can continue
to be used.
If heavy heat checking type cracks (deep and
wide) are found the disc must be replaced.
Cracks can be of 2 types Radial or Through.
If any radial cracks are found in the brake disc
surface as shown in fig. 11. then the disc
must be replaced..
If any Through cracks are found in the brake disc
as shown in fig. 12. then the disc
must be replaced..
Fig. 9
Fig. 10
Fig. 11
TP1627
TP1628
TP1629
TP1630
Fig. 12
To Next Page
Loading...
