Subaru Legacy 2002 Service Manual page 2120

Front wheel
2,942 kPa
When
2
(30 kg/cm
compressed
or more
490 kPa
When
2
(5 kg/cm
decompressed
or less
8) Remove pressure gauges from FL and FR cali-
per bodies.
9) Remove air bleeder screws from the RL and RR
caliper bodies.
10) Connect the air bleeder screws to the FL and
FR caliper bodies.
11) Connect two pressure gauges to the RL and
RR caliper bodies.
12) Bleed air from the pressure gauges and the FL
and FR caliper bodies.
13) Perform VDC sequence control.
<Ref. to VDC-19, VDC Sequence Control.>
14) When the hydraulic unit begins to work, at first
the RR side performs decompression, holding, and
compression, and then the RL side performs
decompression, holding, and compression.
15) Read values indicated on the pressure
gauges and check if they meet the standard value.
16) After checking, remove the pressure gauges
from caliper bodies.
17) Connect the air bleeder screws to RL and RR
caliper bodies.
18) Bleed air from brake line.
4. CHECKING THE HYDRAULIC UNIT VDC
OPERATION WITH BRAKE TESTER
1) Prepare for operating VDC sequence control.
<Ref. to VDC-19, VDC Sequence Control.>
2) Set the front wheels or rear wheels on the brake
tester and set the select lever's position at "neu-
tral".
(1) Brake tester
HYDRAULIC CONTROL UNIT (H/U)
Rear wheel
1,961 kPa
2
, 427 psi) (20 kg/cm , 284 psi)
or more
490 kPa
2
, 71 psi) (5 kg/cm , 71 psi)
or less
S402551A1004
B4M1733B
(1) Brake tester
3) Operate the brake tester.
4) Perform ABS sequence control.
<Ref. to VDC-16, ABS Sequence Control.>
5) When the hydraulic unit begins to work, check
the following working sequence.
(1) The FL wheel performs decompression,
holding, and compression in sequence, and
subsequently the FR wheel repeats the cycle.
(2) The RR wheel performs decompression,
holding, and compression in sequence, and
subsequently the RL wheel repeats the cycle.
6) Read values indicated on the brake tester and
check if the fluctuation of values, when decom-
pressed and compressed, meet the standard val-
ues.
When
compressed
When
decompressed
7) After checking, also check if any irregular brake
pedal tightness is felt.
VDC-15
B4M1730B
Front wheel Rear wheel
1,961 N 981 N
(200 kgf, 441 lb) (100 kgf, 221 lb)
or more or more
490 N 490 N
(50 kgf, 110 lb) (50 kgf, 110 lb)
or less or less
VDC