Komatsu 830E-AC Shop Manual page 1047

TREADLE and PILOT
ACTIVATED DUAL
CONTROLLER
PX
P1
0 - 10,894 kPa
(0 - 1580 psi)
STOP
LIGHT
SW
517 ± 34 kPa
FRONT
(75 ± 5 psi)
BRAKE
CALIPERS
9653 kPa
(1400 psi)
NITROGEN
AR1
LOW BRAKE
PRESS SW
Closes below
15,858 kPa
LAP2
(2300 psi)
LAP1
SP3
BRAKE
MANIFOLD
NV1
NOTE: Solenoids and switches shown in their
non-energized, non-pressurized positions.
B1
BR BF
BRAKE LOCK
PRESSURE
BRAKE LOCK
10,342 kPa
SOLENOID
(1500 psi)
N.C.
SV1
ORF2
AR2 PR1
HS1
CV1 LS1 CV2
PS1
AA
STEERING
AUTOMATIC
PRESSURE
APPLY
SWITCH
14,479 ± 517 kPa
Closes
(2100 ± 75 psi)
below
15,858 kPa
(2300 psi)
T
P2
B2 0 - 20,648 kPa
(0 - 3000 psi)
LOW BRAKE LOCK
APPLY SWITCH
6895 ± 172 kPa
(1000 ± 25 psi)
9653 kPa
(1400 psi)
NITROGEN
PP3
BL AF2
PR2
ORF1
CV3
SV2
NV2
SP1
SUPPLY
22,063 to
STEERING
24,132 kPa
BLEEDOWN
(3200 to
MANIFOLD
3500 psi)
Park
Brake
Service
Brake
REAR
BRAKE
CALIPERS
AF1
T1
T3
PARK BRAKE
PRESSURE REGULATOR
17,237 kPa
(2500 psi)
PK1
PARK BRAKE
PRESSURE
PK2
SWITCH
Closes
below
8618 kPa
(1250 psi)
PARK BRAKE
SOLENOID
HH360 JAN 06
Hydraulic Schematic
Brake System
830E-AC
Effective with A30001 & UP