H3-M6
L2800, L3400, WSM
TRANSMISSION (HST TYPE)
(2) Forward
When the speed control pedal is stepped on and in forward, the variable swash-plate is tilted as shown in figure
above.
As the pump cylinder block rotates with the input shaft, oil is forced out of pump port A at high pressure. As pressure
oil enters motor port C, the pistons, which align with port C, are pushed against the swash-plate and slide down the
inclined surface.
Then the output shaft rotates with the motor cylinder block. This drives the machine forward and the angle of pump
swash-plate determines the output shaft speed.
As the motor cylinder block continues to rotate, oil is forced out of motor port D at low pressure and returns to the
pump port B.
(1) Oil Cooler
(2) Oil Filter (For HST)
(3) Charge Pump
(4) Swash Plate
(5) Cylinder Block (Motor)
(6) Neutral Valve (Forward)
(7) Neutral Valve (Reverse)
(7) Neutral Valve (Reverse)
(8) Piston
(9) Cylinder Block (Pump)
(10) Charge Relief Valve
(11) Check and High Pressure
Relief Valve (Forward)
(12) Check and High Pressure
Relief Valve (Reverse)
(13) Transmission Case
(14) OIl Filter
(15) Hydraulic Control Valve
(16) Hydraulic Pump (For Main
Circuit)
(17) Hydraulic Pump (For Power
Steering)
(18) Power Steering Controller
A : Pump Port A
B : Pump Port B
C : Motor Port C
D : Motor Port D
Tractor Manuals Scotland - Please Do Not Copy
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