Subaru IMPREZA GD 2007 Series Manual page 3254

asieps_tobira_IM_US.book 45 ページ ２０１２年１月１７日 火曜日 午後３時４８分
3) If the brake booster is faulty, replace it with a
new part.
Lack of boost action check
Turn the engine OFF, and set the value of the vac-
uum gauge to "0". Then, check the fluid pressure
when the brake pedal is depressed. The pressure
must be greater than the specification listed.
Brake pedal 147 N
operation force (15 kgf, 33 lbf)
15"
Fluid 588 kPa
16"
pressure (6 kgf/cm
17"
Boosting action check
Set the vacuum gauge reading to 66.7 kPa (500
mmHg, 19.69 inHg) with the engine running. Then,
check the fluid pressure when the brake pedal is
depressed. The pressure must be greater than the
specification listed.
Brake pedal 147 N
operation force (15 kgf, 33 lbf)
5,296 kPa
15" (54 kgf/cm
768 psi)
6,276 kPa
Fluid
16" (64 kgf/cm
pressure
910 psi)
4,021 kPa
17" (41 kgf/cm
583 psi)
Brake Booster
294 N
(30 kgf, 66 lbf)
1,471 kPa
2
(15 kgf/cm ,
213 psi)
1,667 kPa
2
(17 kgf/cm ,
2
, 85 psi)
242 psi)
1,471 kPa
2
(15 kgf/cm ,
213 psi)
294 N
(30 kgf, 66 lbf)
9,120 kPa
2 2
, (93 kgf/cm ,
1,323 psi)
10,200 kPa
2 2
, (104 kgf/cm ,
1,479 psi)
8,336 kPa
2 2
, (85 kgf/cm ,
1,209 psi)
BR-45
BRAKE