BASIC BRAKE SYSTEM – On-vehicle Service
35A-6
6. BRAKE DISC THICKNESS CHECK
(1) Remove dirt and rust from the surface of the brake disc.
(2) Measure the thickness of the disc, over which the pad
slides, at 4 places or more.
Standard value: <Front> 24.0 mm
<Rear> 20.0 mm
Limit: <Front> 22.4 mm
<Rear> 18.4 mm
(3) If any of the brake disc thickness measurements exceeds
the limit, replace the brake discs and brake pads on both
sides as a set.
7. BRAKE DRUM I.D. CHECK
(1) Remove the rear brake assembly and support it with a
wire.
(2) Remove the brake disc.
(3) Measure the I.D. of the brake drum at 2 places or more.
Standard value: 168.0 mm
Limit: 169.0 mm
(4) If the brake drum I.D. has worn to exceed the limit, or
if an excessive eccentric wear is evident, replace the
brake disc with a new one.
8. LINING TO BRAKE DRUM CONTACT
CHECK
(1) Remove the rear brake assembly and support it with a
wire.
(2) Remove the brake disc.
(3) Remove the shoe & lining assembly. (Refer to GROUP
36.)
(4) Apply chalk to the brake disc inner surface (brake drum)
and rub the shoe & lining assembly against it.
(5) If any irregular contact is evident, replace the shoe &
lining assembly or brake disc.
NOTE
Wipe the surfaces clean of chalk after the check has
been completed.