Hydraulic Piping System - Yanmar YM240 Service Manual

1. Hydraulic piping system
(1) Main hydraulic piping system
Outlet B
J ! J -
Oil strainer
I ---
Relief valve
1
Stop valve
-
Lift arm
Reseruoir
I
,
!
r"l
~ y d r a d i c
icontrol valve
I
+j-l
L.. I -
-
Outlet A
t->j&=j
Reservoir
(2) Implement
(a ) Power steering
%I
Power steering
(b) Single-cylinder double action
Outlet A
Hydraulic cylinder Implement
Relief valve
J
Dumping
( c
)
Two-cylinder double action
Outlet A
Hydraulic
control valve
( _ 1 , 1 R m i r
Lifting
n
Hydraulic cylinder (B1
Hydraulic cylinder (A)
(d) Single-cylinder single action
&
&
S ~ O ~ V ~ I V C &
Reservoir stop valve
I
M -
Implement
,
,
strainer Hydraulic pump Stop valve Control valve
I
m k
Cylinder Engine
Implement
Relief valve
)I(
SIOW
return valve
1
I
Ld
I
FT
Control valve