4-7
PARKING BRAKE OPERATED
PARKING BRAKE OPERATED
When the parking brake switch is pressed B position, the solenoid valve is deenergized and the
valve open the drain port.
At the same time, the hydraulic oil in the parking brake return to the tank through the solenoid
valve. When the piston rod is returned by the force of the spring, the parking brake is applied.
22
21
23
24
26
2
29
18
17
16
15
20
19
25
16
30
18
18
Front
Rear
Parking
A
B
P
T
T2
P
B3
S3
T1
PP
S2
B2
B1
S1
G1
G2
PS
PS
PS
A
B
D
L
S
B
P1
T1
P2
T2
A1
A2
T/M
40
PS
Return line
Return line
Main pump
41
Parking brake solenoid
Parking brake switch
P
A
B
4)
4)
760F4BS05
Содержание HL955
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