BRAKES
23
DISC INSPECTION:
The disc should be free from score marks. If
scored, it should be ground and refitted. Do not
grind the disc more than 0.25mm per side. If the
total thickness of the disc after grinding is found to
be less than disc discard thickness of 20 mm, the
disc should be changed.
The disc thickness variation is to be checked by
measuring the thickness of the rotor at four or
more points around the circumference of the rotor.
All measurements must be made at the same
distance from the edge of the rotor.
After fitment, the face runout of the disc should be
less than 0.03 mm.
During measurement confirm the dial gauge
probe should be approx. 10 mm from the outer
edge of the brake rotor, perpendicular to the disc
and under slight preload.
Check front wheel bearing for looseness before
face runout measurement.
The control of the braking surface finish is
necessary to avoid pulls and erratic performance.
It will also helps in extending pad life.
6.10.2 REAR BRAKE MAINTENANCE
:
To maintain the efficiency of the brake system,
preventive maintenance is essential and the
following recommendations should be observed at
the intervals stated.
1. At specified interval remove the brake drums
and check the lining for wear. The linings
should not be allowed to wear less than 1 mm
from the shoe rim.
2. At specified interval clean the back plate and
lubricate the tips of the shoe platforms and the
moving parts of the adjuster. Keep the grease
away from the shoe linings and all hydraulic
parts.
BRAKE HOSES
Replace Brake hoses at specified interval.
DRUM INSPECTION:
Inspect the drum for cleanliness. Check for crack,
scores etc. Check braking surface for its wear by
measuring the inside diameter.
Brake drum
inside dia.
Standard
Service limit
200
202