POWER BRAKE UNIT INSPECTION
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7. Install the
SST
to the brake pipe as shown in the figure.
8. Bleed the brake line and the
SSTs
of air. Bleed the air form the
SSTs
using bleeder screw A.
9. Install the pedal force gauge to the brake pedal.
10. Connect the vacuum gauge to the vacuum line.
Vacuum loss inspection
1. Start the engine.
2. Depress the brake pedal with a force of
200 N {20.4 kgf, 45.0 lbf}
.
3. Stop the engine when the vacuum gauge reading reaches
68 kPa {510 mmHg, 20 inHg}
with the pedal depressed.
4. With the engine off, observe the vacuum gauge for
15 s
.
5. If the gauge has dropped
3.3 kPa {25 mmHg, 1.0 inHg}
or less, the unit is normal.
Lack of hydraulic pressure inspection
1. If the pedal force and fluid pressure correlation is within the specification with the engine
stopped and a vacuum amount of
0 kPa {0 mmHg, 0 inHg}
, the system is normal.
Master cylinder fluid pressure
Vacuum amount at 0 kPa {0 mmHg, 0 inHg}
Pedal force
Fluid pressure
200 N {20.4 kgf, 45.0 lbt}630 kPa {6.42 kgf/cm
2
, 91.4 psi} or more
