Installation Instructions

81700·82100·82400 WSM,11770
3 TRANSMISSION
• Forward
Oil Filter Cartridge
r=,,~_- Charge Relief Valve
-
Low Pressure Oil
High
Pressure Oil
+
P2 Check and High pressure
Relief Valve (Reverse)
D port
B port
A port
C port
Cylinder Block
(Pump)
Transmission
Case
-
Oil Strainer ---+--~
Main Hydraulic
Pump
[
22 £/min ]
5.7 U.S.GPM
4.8Imp.GPM
Charge Pump
Ot=:=:::....====~
Cooler
l
[
5£/min 1
1.3 U.S.GPM
1.1 Imp.GPM
[
17 £/min ] J
4.4 U.S.GPM
3.7Imp.GPM
Check and High Pressure
Relief
valve (Forward)
Free Oil
Suction Oil
8177F311
When the speed control pedal is stepped on and in
forward, the variable swashplate 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 swashplate 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 swashplate 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.
3-M9