ZONGSHEN ZS250GY-3 Service Manual page 45

[7]Measure the thickness of front brake disc with
micrometer.The limit value of repair is 2.0mm.
CAUTION
If the thickness of brake disc exceeds the limit
value of repair 2.0mm,replace the brake disc.
[8]Measure brake disc run-out with dial indicator,
and the limit value of repair is 0.3mm.
CAUTION
If the run-out of brake disc exceeds the limit
value of repair0.3mm,replace the brake disc.
[9]Step rear brake pedal by foot, check it for
performance. The standard free stroke of brake
pedal is:20mm～30mm.
[10]If the free stroke of rear brake pedal cannot
reach the standard value, readjust the nut of rear
brake rod.
[A]Regulate adjusting nut of rear brake and adjust
the free stroke of rear brake pedal to 20mm～
30mm.
[B]Step rear brake pedal for several times and
release it.Rotate the rear wheel assembly and check
the rear wheel for free rotation.
Check the
thickness
Check the
run-out
Check rear
brake arm
Adjust free stroke
41