C. The backflush piston moves to the right and
C. The backflush piston moves to the right and
C open to make
C open to make
the oil of brake sub-
the oil of brake sub-
pump of brake return to the fuel tank throug
pump of brake return to the fuel tank throug
h chamber D.
h chamber D.
1.
1.
Pl
Pl
ug
ug
2.
2.
1-
1-
wa
wa
y
y
va
va
lv
lv
e
e
se
se
at
at
3.
3.
1-
1-
wa
wa
y
y
va
va
lv
lv
e
e
pi
pi
n
n
4.
4.
Bo
Bo
un
un
ce
ce
-b
-b
ac
ac
k
k
pi
pi
st
st
on
on
se
se
at
at
5
5
.
.
B o
B o
u
u
n c
n c
e -
e -
b a
b a
c k
c k
p
p
i s
i s
t o
t o
n
n
6 .
6 .
R
R
e t
e t
u r
u r
n
n
s p
s p
r i
r i
n
n
g
g
7
7
.
.
V a
V a
l v
l v
e
e
s
s
l e
l e
e v
e v
e
e
8 .
8 .
S p
S p
r i
r i
n
n
g
g
9.Oil seal 10.Piston ass’y
9.Oil seal 10.Piston ass’y
Fig.5.3 Brake valve
Fig.5.3 Brake valve
Fig.5.4 Reservior
Fig.5.4 Reservior
R
R
e
e
s
s
e
e
r
r
v
v
o
o
i
i
r
r
O
O
i
i
l
l
p
p
u
u
m
m
p
p
O
O
i
i
l
l
t
t
a
a
n
n
k
k
Brake
Brake
Steering
Steering
unit
unit
Spring
Spring
O-ring
O-ring
Snap ring
Snap ring
O-ring
O-ring
Safety valve
Safety valve
1-way valve
1-way valve
Piston
Piston
Warning
Warning
sw.
sw.
-65-
-65-
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