Using Sst - Mazda CX-7 2007 Workshop Manual

Using SST

Pre-inspection preparation
1. Install the SST (49 N043 001) to the master
cylinder in the orientation shown in the figure.
Note
• When installing the SST (49 N043 001) to
the master cylinder, use a commercially
available flare nut wrench.
— Flare nut across flat: 12 mm {0.47 in}
2. Connect the SSTs, a vacuum gauge, and a pedal
force gauge to the master cylinder, and bleed the
air from the SSTs and the brake line. (Bleed the
air from the SSTs using air bleed valve A.)
Vacuum loss inspection
1. Start the engine.
2. Depress the brake pedal with a force of 200 N {20.4 kgf, 44.9 lbf}.
3. Stop the engine when the vacuum gauge reading reaches 68 kPa {510 mmHg, 20.1 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 o kPa {0 mmHg, 0 inHg}
Pedal force (N {kgf, lbf})
200 N {20.4kgf, 44.9lbt}
Hydraulic pressure inspection
1. Start the engine. Depress the brake pedal when the vacuum reaches 66.7 kPa {500 mmHg, 19.7 inHg}.
2. At this time, apply the indicated pedal force and if the fluid pressure is within the specification, the unit is
normal.
Master cylinder fluid pressure
Vacuum amount at 66.7 kPa {500 mmHg, 19.7 inHg}
Pedal force (N {kgf, lbf})
200 N {20.4kgf, 44.9lbt}
End Of Sie
04-11–12
CONVENTIONAL BRAKE SYSTEM
FLARE NUT ACROSS FLAT
12 mm {0.47 in}
TO MASTER
CYLINDER
VACUUM
49 U043 004A
GAUGE
A
49 N043 001
49 U043 005
Fluid pressure (kPa {kgf/cm2, psi})
2
550 kPa {5.61 kgf/cm , 79.8 psi} or more
Fluid pressure (kPa {kgf/cm2, psi})
2
6,950 kPa {70.88 kgf/cm , 1.009 psi} or more
TO SST
49 N043 001
acxuuw00001746
49 U043 006
PEDAL FORCE
GAUGE
acxuuw00001863