Travel - Low Speed
During Low speed travel the swash plate of the travel
motor is shifted to the maximum angle side and Low
speed travel is initiated.
In Low speed travel, no electric signal is sent to the 2
speed travel solenoid valve inside the multiple valve.
The oil in port P5 of the track motor returns back to tank
and the swash angle of the travel motor to the maximum
.
Pressurised oil is discharged from port A1(front
pump)and enters port 5P of the control valve. The
pressurised oil is discharged from port A2 (rear pump)
and enters port 4P of the control valve. When right and
left travel spools are switched pressurised oil flows to
the travel motor and Low speed travel occurs.
3 - 6
Section E Hydraulics
9803/6020
Section E
3 - 6
Issue 1
Schematics
A
Pressure Lines
B
Return Line
C
Pilot line
D
Electric Signal
E
Travel Motor (Right)
F
Travel Motor (Left)
G
Rotary Coupling
H
Control Valve
J
Multiple Valve
K
Hydraulic Pump
L
Travel Change Switch
M
Monitor Display
N
Lamp goes on
P
Travel (R)
Q
Travel (L)
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