Brake Line Air Bleeding - Dinli DL702 Service Manual

BRAKE
● Tighten:
Torque - Bleed Valve: 5.4 N-m (0.55 kg-m, 48 in-lb)
● Apply the brake lever forcefully for a few second, and check for
fluid leakage around the fittings.
If the brake lever has a soft or "spongy feeling" when it is applied,
there might be air in the brake line or the brake may be defective.
Since it is dangerous to operate the vehicle under such condition,
bleed the air from the brake line immediately.

Brake Line Air Bleeding

● Bleed the air whenever brake parts are replaced or reassembled.
● Remove the reservoir cap and fill the reservoir with new brake
fluid.
● Slowly pump the brake lever several times until no air bubbles
can be seen rising up through the fluid from the hose at the
bottom of the reservoir. This bleeds the air from the master
cylinder and the brake line.
○Tap the brake hose lightly going from the caliper to the reservoir
side and bleed the air off at the reservoir.
● Attach a clear plastic hose to the bleed valve on the caliper, and
run the other end of the hose into a container.
● Bleed the brake line and the caliper as follows:
○ Hold the brake level applied [B].
○ Quickly open and close the valve [C].
○ Release the brake lever [A].
● The fluid level must be checked several times during the bleeding
operation and replenished as necessary.
○ If the fluid in the reservoir runs completely out any time during
bleeding, the bleeding operation must be done over again from
the beginning since air will have entered the line.
○ If the brake level action still feels soft or "spongy", tap the brake
hose from bottom to top and air will rise up to part of the hose.
Slowly pump the brake level in the same manner as above.
● Tighten:
Torque - Bleed Valves: 5.4 N-m (0.55 kg-m, 48 in-lb)
● Apply the brake lever forcefully for a few seconds, and check for
fluid leakage around the fittings.
WARNING
NOTE
NOTE
【3-4】
A
B