Chery A21 2005, Service Manual, Page: 114 / 475

CHERY A520 SERVICE MANUAL CHASSIS
22
Section IX Brake Fluid Filling and Air Discharge
Needed tools: diagnosis instrument and 10# open end wrench
If air enters into the brake system in the case of brake component repairing or replacement,
you should implement the complete air discharge process. Before the brake is air-discharged,
the front and rear air-discharge cylinder piston must return to the highest position. The
preferred method is to use failure diagnostic tester to make the cylinder piston return the
highest position once again. If failure diagnostic tester cannot be used, you can adopt the
second procedure, but you must carry out the operation in strictly accordance with the
specified steps.
If air enters into the brake system due to too low liquid level or the cut-off of brake pipeline
of the master cylinder, you must discharge the air from the four brake hydraulic systems. If
the brake hose or brake is broken on certain wheel, you should only discharge the air from the
wheel clamp. If brake pipe or hose is broken at any joint of mater cylinder and brake, you
should only discharge the air from the brake systems related to the broken pipe or hose.
9.1 Air discharge of brake system
1) Uplift and support the car properly.
2) Install the transparent plastic exhaust
hose onto brake caliper bleeder valve.
3) Put the other end of the transparent
exhaust hose into the clean container
containing some clean brakes.
4) Step on the brake pedal for 5-6 times,
and open the exhaust valve to make the
brake fluid flow.
5) Repeat above mentioned the fourth step
until the there is no air bubble in the
brake fluid, and close the exhaust valve
when you feel more strength on step the
brake pedal.
6) Dismount the transparent plastic exhaust
hose from the exhaust valve.
Note: The above-mentioned steps are
applicable for the air discharge of the brake
pipeline of each brake.
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