Honda ST50 Shop Manual page 46

44
Bra~~ lining
Fl&. 90
Flc.92
4.7 Braking System
Reliability and durability of 1hc braking system
isan cssen11al requirement for safe riding.
The braking system which is adopted is an outward
cxpandinr. 1ypc having a 110 mm (4.340 in)
diameter. The wheel hub is light weight alloy
castin& which excels in heart dissipating chara•
cteristic and the brake lining con1act surface is a
cas1 iron ring.
In operation, the action or the brake lever or
the foot pedal forces the cam to rotate, and this
is turn forces the brake shoes, with the anchor
pin as the pivot. to move ou tward and come in
con!act with 1hc brake drum. The brake shoing
is forced against the brake drum, and the friction
between the brake drum and brake shoe stops
the rotating wheel. With the lever released, the
brake shoes retu rn to their original posi tion by
meansoftv.·o sprina.s which hold the shoes inward.
(Fig. 90)
a. Disassffltbly
(I) Remove the exhaus1 pipe and the muffier.
(2) Remove the brake rod from the brake arm
by loosening the brake adjusting nut. then
hook off the brake pedal spriug and stop
switch spring(Fig. 91).
(3) Remove the drive chain cover.
(4) Disconnect the rear brake cable from the
rear brake arm.
(5) Pull out the cotter pin.
(6) Extract the brake pedal middle arm brake
pedal and rear brake arm with a washer
from the brake pivo1 pipe. (Fig. 92).