FUNCTION
HYDRAULIC PUMP (PISTON)
2
3
HYDRAULIC PUMP (PISTON)
3I0AX00
If the discharge pressure becomes higher than the pre-
set value for the spring (7), the angle of inclination of the
swash plate (4) becomes smaller due to the net force on
the piston, F1 × a, and the force, F2, of the piston (9),
which allows the plate to be retained at the position at
which the discharge pressure and the spring force are
balanced.
If the discharge pressure increases further, the angle of
inclination of the swash plate (4) decreases further. At
this time, the arm length, a, which is determined by the
action of the net force on the piston, F1, becomes small-
er, represented by a', resulting in a larger force F1 being
needed to act against the inclination of the swash plate.
In this way, the angle of inclination of the swash plate (4)
is changed and the discharge volume is controlled. This
allows the pump to supply only the pressure and flow re-
quired for the load so as to minimize pressure losses.
The angle of inclination of the swash plate (4) changes
according to the operating pressure of the pump P3 as
well as the operating pressure of the pumps P1 and P2.
The P-Q curve of the piston pump consequently be-
comes the curve that effectively uses the engine horse-
power (total horsepower control).
Summary of Contents for TB215R
Page 1: ...CC8E005 WETB215R_A XI Seral No 215000003...
Page 3: ...SAFETY 1...
Page 13: ...SERVICE DATA 2...
Page 16: ...SERVICE DATA DIMENSIONAL DRAWING 3 2 DIMENSIONAL DRAWING 2A0AX001 Operating range 2A0AX02...
Page 53: ...SERVICE DATA WIRE HARNESS DIAGRAM 2 2 WIRE HARNESS DIAGRAM 2H0AX00 Body harness 03342 68000...
Page 54: ...SERVICE DATA WIRE HARNESS DIAGRAM 3 2 WIRE HARNESS DIAGRAM 2H0AX00...
Page 55: ...SERVICE DATA WIRE HARNESS DIAGRAM 4 2 WIRE HARNESS DIAGRAM 2H0AX00...
Page 56: ...SERVICE DATA WIRE HARNESS DIAGRAM 5 2 WIRE HARNESS DIAGRAM 2H0AX00...
Page 57: ...SERVICE DATA WIRE HARNESS DIAGRAM 6 2 WIRE HARNESS DIAGRAM 2H0AX00...
Page 58: ...FUNCTION 3...
Page 88: ...DISASSEMBLY AND ASSEMBLY 4...
Page 125: ...DISASSEMBLY AND ASSEMBLY OPERATING DEVICE 6 4 OPERATING DEVICE 4F0AX00 Hydraulic piping...
Page 230: ......
Page 232: ...TROUBLESHOOTING 5...
Page 287: ...Other 6...