Installation Instructions

3 TRANSMISSION
81700·82100·82400 WSM,11770
• Reverse
Low Pressure Oil
High
Pressure Oil
Free Oil
Check and High pressure
Relief Valve (Reverse)
A pori
D pori
B pori
C port
I
Transmission
Case
.Oil Filter
Cartridge
r=-,~_-Charge Relief Valve
-
Thrust Ball
Bearing
Oil
Strainer
Main Hydraulic
Pump
[
222/min ]
.5.7 U.S.GPM
4.8Imp.GPM
Cooler
-
~=:::=::j~ci~:r~~'~~'veF============:J
Check and High Pressure
Relief valve (Forward)
l
[
5 £/min
1
1.3 U.S.GPM
1.1Imp.GPM
[
17 2/min ]
~
4.4 U.S.GPM
3.7Imp.GPM
Suction Oil
8177F312
When the speed control pedal is stepped on and in
reverse,
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 B at high
pressure. As pressure oil enters motor port D, the
pistons, which align with port D, 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 rearward 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 C at low pressure and
returns
to the pump.
3-M10