Service Brake

Check the free play of brake pedal with a force of less than 10 N (1 kgf, 2 lbf).
Brake pedal play

0.5 - 2.0 mm (0.02 - 0.08 in)

Fig 1: Checking Free Play Of Brake Pedal
Courtesy of SUBARU OF AMERICA, INC.
If the free play is out of the specifications values indicated above, adjust the brake pedal as follows.
1. Make sure the engine is off. (No vacuum is applied to brake booster).
2. Inspect that there is play between brake booster clevis and pin at brake pedal installing portion. [Depress brake pedal pad with a force of less than 10 N (1 kgf, 2 lbf) to a stroke of 0.5 to 2.0 mm (0.02 to 0.08 in).]
3. Pull the brake pedal by hand.
4. If there is no play between the clevis pin and the clevis, rotate the brake switch to the left.
5. Loosen the operating rod locknut, rotate the operating rod, adjust the pedal to the specified height and tighten the locknut.
  Locknut tightening torque:
  
  22 N.m (2.2 kgf-m, 16 ft-lb)
  
  Pedal height L:
  
  150 - 160 mm (5.91 - 6.30 in)
  
  Brake pedal free play A:
  
  0.5 - 2 mm (0.020 - 0.079 in) [When pulling the brake pedal upward with a force of less than 10 N (1 kgf, 2 lbf).]
  
  Fig 2: Identifying Stop Light Switch, Toe Board And Mat
  Courtesy of SUBARU OF AMERICA, INC.
6. While pulling up the brake pedal, insert the brake switch until the end of the brake switch screw contacts the stopper.
7. With the end of the brake switch screw pushed against the stopper, turn the switch to the right and secure the switch.
8. Check that gap C between the stopper and the end of the brake switch screw is within the specification.
  
  Fig 3: Identifying Brake Switch, Switch Clip And Stopper
  Courtesy of SUBARU OF AMERICA, INC.
9. Pull up the pedal pad and check the play. Check that the stop light goes out when the pedal is not pressed.
Check the pedal stroke. While the engine is idling, depress the brake pedal with a 490 N (50 kgf, 110 lbf) load and measure the distance between the brake pedal and steering wheel. With the brake pedal released, measure the distance between pedal and steering wheel again. The difference between the two measured values must be less than specified value. If the measured value is more than specification, there is possibility of entering air in hydraulic unit.
Brake pedal stroke A:

95 mm (3.74 in)/490 N (50 kgf, 110 lbf) or less

Fig 4: Identifying Steering Wheel And Toe Board
Courtesy of SUBARU OF AMERICA, INC.
Check to see if air is in the hydraulic brake line by the feel of pedal operation. If air appears to exist in the line, bleed it from the system.
Check for even operation of all brakes, using a brake tester or by driving the vehicle for a short distance on a straight road.