wsm RTV-X1120D Workshop Manual page 232

RTV-X900, RTV-X1120D, WSM
[B] Half Stroke Movement of Pedal and Light Load Condition
When a half stroke of pushing on the speed control pedal (21) is performed, the regulator valve spool (17) moves
as shown in the diagram.
Oil from the charge circuit moves the servo piston (16) causing inclination of the variable swashplate (19).
Inclination of the variable swashplate (19) causes the pump piston to move back and forth.
This moving back and forth enables providing high pressure oil from port A of the pump.
High pressure oil from pump port A flows to port C on the motor.
The cylinder block (7) of the motor is driven by the motor piston.
The motor cylinder block (7) is connected to the output shaft (6) so the output shaft (6) starts to rotate.
The output shaft (6) starts to rotate based on rotating speed of the pump.
Low pressure oil from port D on the motor returns to port B on the pump
2-M17
TRANSMISSION
(1) Unload Valve
(2) Control Piston 1
(3) Control Piston 2
(4) HST Housing
(5) Variable Swashplate
(Motor)
(6) Output Shaft
(7) Cylinder Block
(Stationary Motor)
(8) Control Piston 3
(9) Anti-cavitation Valve
(10) Input Shaft
(11) Charge Relief Valve
(12) Oil Filter
(13) Charge Pump
(14) Oil Filter Cartridge (Suction)
(15) Oil Tank
(16) Servo Piston
(17) Regulator Valve Spool
(18) Regulator Valve
(19) Variable Swashplate
(HST Pump)
(20) Cylinder Block
(21) Speed Control Pedal
(22) Check Valve
(23) Orifice
(24) Check And High Pressure
Relief Valve (Forward)
(25) High Pressure Relief Valve
(Dynamic Brake)
a: To HST Housing
A: A Port
B: B Port
C: C Port
D: D Port
9Y1210946TRM0019US0
KiSC issued 01, 2014 A