HYDRAULIC BRAKES 4A – 13
DAEWOO V–121 BL4
PRESSURE BLEEDING THE BRAKES
Notice : Pressure bleeding equipment must be of the
diaphragmtype. It must have a rubber diaphragm between
the air supply and the brake fluid to preventir, moisture, oil,
and other contaminants from entering the hydraulic sys-
tem. Contamination could lead to deterioration of the rak-
ing components and loss of braking action.
1. Disconnect the master cylinder electrical connector.
2. Remove the master cylinder reservoir cap.
3. Connect the bleeder with the adapter to the master
cylinder reservoir.
4. For vehicles with the antilock braking system
(ABS), locate and remove the hydraulic modulator
bleeder valves. Refer toSection 4F, Antilock Brake
System
5. Charge the bleeder ball to 140 to 172 kPa (20 to 25
psi).
6. Connect the line to the adapter. Open the line
valve.
7. Raise and suitably support the vehicle.
Important : The bleeding sequence is as follows: right
rear, left front, left rear and right front.
8. Attach the bleeder hose to the bleeder valve. Sub-
merge the opposite end of the hose in a clean con-
tainer partially filled with brake fluid.
9. A107A006 Open the bleeder valve one–half to
three–fourths turn and allow the fluid to flow until no
air is seen in the fluid.
Notice : After the bleeding operation, the brake reservoir
may be pressurized. While disconnecting the bleeder
hose or the unthreaded adapter cap, cover the cap and the
connection with a shop towel to protect painted surfaces
from contact with the brake fluid.
10. Inspect the brake pedal for sponginess. Repeat the
entire bleeding procedure to correct this condition.
11. Tighten the bleeder valve and replace the dust cov-
ers.
Tighten
Tighten the bleeder valve to 8 NSm (71 lb–in).
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