Subaru 2009 IMPREZA, Service Manual

Page: 97 / 3619

PM-33
Brake Line
PERIODIC MAINTENANCE SERVICES
2) If the free play is out of specifications above, ad-
just the brake pedal as follows.
(1) Make sure the engine is off. (No vacuum is
applied to brake booster.)
(2) There should be play between brake boost-
er clevis and pin at brake pedal installing por-
tion. [Depress brake pedal pad with a force of
10 N (1 kgf, 2 lbf) or less to a stroke of 0.5 to
2.0 mm (0.02 to 0.08 in).]
(3) Pull the brake pad by hand.
(4) If there is no play between clevis pin and
clevis, turn the brake switch to the left to loosen.
(5) Loosen the operating rod lock nut to turn the
operating rod, and then tighten the lock nut after
adjusting the pedal to the specified height.
Lock nut 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)]
(6) Push the brake switch until the thread end of
the brake switch contacts the stopper while pull-
ing the brake pedal.
(7) Turn the switch to the right to secure it while
pushing the brake switch thread end against the
stopper.
(8) Check that the clearance (C) between stop-
per and brake switch thread end is within the
specification.
(9) Pull the pedal pad and check the play.
Check that the stop light goes out when the
pedal is not depressed.
3) 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 pedal stroke is normal if the difference be-
tween two measured values is the specified value
or less. If the measured value is specification or
more, 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
4) 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.
5) Check for even operation of all brakes, using a
brake tester or by driving the vehicle for a short dis-
tance on a straight road.
(1) Stop light switch
(2) Mat
(3) Toe board
(4) Brake booster operating rod
(1)
(3) (4)
(2)
A
BR-00106
L
(A) Brake switch
(B) Switch clip
(C) 1.35
r
0.61 mm (0.05
r
0.02 in)
(D) Stopper
(A) Steering wheel
(B) Toe board
PM-00413
(A)
(B)
(D)
(C)
(B)
(A)
= A
1
1 2
2
PM-00045