3 TRANSMISSION
82410 • 82710 • 82910 WSM, 12271
• Reverse
Oil Filter Cartridge
t
Neutral Valve (Reverse)
Neutral Valve
(Forward)
...
111
11
.....
" Free Oil
Oil Tank
Hydraulic Pump
82410
[
16.6 Umin
J
4.4 U.S.gal/min.
3.7Imp.gal/min
82710,82910
[
24.4 Umin
]
6.4 U.S.gal/min.
5.4 Imp.gal/min
Hydraulic
--"::::====::j
Control
~====:=:.îš
Valves
Cylinder Block
(Motor)
Oil Strainer
--+--
__
t~~
Oil Filter Cartridge
(for HST)
82410
Hydraulic pum
p
[9.a
Umin . ]
2.6 U.S.gal/mln.
2.2 Imp.gal/min.
82710,82910
[
11.7 Umin ]
2.9 U.S.gal/min.
2.6 Imp.gal/min.
~
High Pressure Oil
<:;==
Low Pressure Oil
12490F30060
OilCOOler~
When the speed control pedal is stepped on and
in
reverse, the variable
swashplateis
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
porte
at low pressure and returns to
the pump.
12271
M30050
3-M10