DEUTZ-FAHR AGROTRON 106 MK3, Workshop Manual

Page: 91 / 150

10-73
b. When a control lever is operated
•
When a control lever is moved from the NEUTRAL position, this generates an LS signal corresponding to the load
delivery pressure PLS .
•
The LS signal pressure in chamber a causes the spool to shift to the left, thereby connecting the passages d and e .
The chamber X is depressurised and the spring (5) causes the swash plate to move to the maximum displacement
angle.
•
System balance is restored when the pressure
∆
PR exerts on the spool (1) a force equal to the difference in force due
to the spring (2) thus restoring the connection between the passages c and d .
M
Min Max
D0004860
8
7
6 5
2 1
PLS
PP
T
PEN
a
b
X
e d
c
f
PP
HYDRAULIC SYSTEM LOAD SENSING VALVE, PRESSURE CUT-OFF VALVE