PERIODIC MAINTENANCE 2-12
AIR BLEEDING THE BRAKE FLUID CIRCUIT
Air trapped in the fluid circuit acts like a cushion to
absorb a large proportion of the pressure devel-
oped by the master cylinder and thus interferes
with the full braking performance of the caliper
b r a k e . T h e p r e s e n c e o f a i r i s i n d i c a t e d b y
“sponginess”of the brake lever and also by lack of
braking force. Considering the danger to which
such trapped air exposes the machine and rider, it
is essential that, after remounting the brake and
restoring the brake system to the normal condition,
the brake fluid circuit should be purged of air in the
following manner.
● Fill up the master cylinder reservoir to the
“HIGH”level line. Replace the reservoir cap to
prevent entry of dirt.
● Attach a pipe to the caliper bleeder valve, and
insert the free end of the pipe into a receptacle.
● Squeeze and release the brake lever several
times in rapid succession, and squeeze the
lever fully without releasing it. Loosen the
bleeder valve by turning quarter of it so that the
brake fluid runs into the receptacle ;
this will remove the tension of the brake lever
causing it to touch the handlebar grip. Then,
close the valve, pump and squeeze the lever,
and open the valve. Repeat this process untill
the fluid flowing into the receptacle no longer
contains air bubbles.
● Close the bleeder valve, and disconnect the
pipe.
Fill the reservoir to the “HIGH”level line.
Bleeder valve : 6~9 N∙m (0.6~0.9 kg∙m)
Replenish the brake fluid reservoir as necessary
while bleeding the brake system.
Make sure that there is always some fluid visible
in the reservoir.
CAUTION
Handle the brake fluid with care : the fluid
reacts chemically with paint, plastics, rubber
materials, etc.
WARNING
Summary of Contents for RX 125 -
Page 1: ...SERVICE MANUAL 99000 97100 SERVICE MANUAL HYOSUNG MOTORS MACHINERY INC RX125 RX 125 ...
Page 5: ......
Page 29: ...PERIODIC MAINTENANCE 2 16 ...
Page 94: ...FUEL SYSTEM 4 12 Start motor Piston Cylinder Oil cooler Cylinder head Crankcase Transmission ...
Page 118: ...CHASSIS 6 6 FRONT BRAKE yyy yyy yyy yyy yy yy y y ...
Page 126: ...CHASSIS 6 14 FRONT FORK ...
Page 132: ...CHASSIS 6 20 STEERING STEM ...
Page 143: ...6 31 CHASSIS SUSPENSION Service limit 10 20 mm Service limit 14 20 mm Service limit 10 20 mm ...
Page 150: ...CHASSIS 6 38 SPACER Apply grease to the spacer when installing Super grease A ...