Hyundai HX140L, Manual

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2-59
3. OPERATION
MOTOR
High pressure oil delivered form hydraulic pump is led to inlet port that is provided in the brake
valve portion and, through the rear cover (30) and valve plate (24), led to cylinder block (12).
The oil flow and direction of shaft rotation are indicated in table. 1)
Shaft rotation Left
(Counterclockwise)
Shaft rotation Right
(Clockwise)
VB VA
125LCR2TM23
As shown in below figure, high pressure oil is supplied to the pistons which are on one side of the
line Y-Y that connects upper and lower dead points and produces force F1.
F1 = P
佴
A (P : pressure, A : area of piston section)
The swash plate (11) with inclined angle of divides this force F1 into thrust force F2 and radial
force F31-34.
This radial force is applied to axis Y-Y as turning force and generate drive torque of T.
T = r
1
余
F31
.
r
2
余
F32
.
r
3
余
F33
.
r
4
余
F34
This drive torque is transmitted via cylinder block (12) to driving shaft (6).
Y
F31
r1
r2
r3
F32
F33
Y
F34
r4
P
P
P
P
F1
F2
F31
F32
F33
F34
29092TM07
Inlet
port
Outlet
port
Direction of shaft rotation
(viewing from rear cover)
VB VA Right (clockwise)
VA VB Left (counterclock wise)