Cub Cadet 8454 - Manual (Page 204)

CHAPTER 6 8454
6-10 D569-W03 June-2003
B. HYDRAULIC CIRCUIT FOR THREE POINT HYDRAULIC SYSTEM
Hydraulic Oil Flow
1. When the engine (4) is started, the hydraulic pump
(3) is rotated to draw oil from the transmission case
(1) through the suction pipe. Supplied oil is filtered
by the hydraulic oil filter cartridge (2).
2. Filtered oil is forced out by the hydraulic pump to
the front hydraulic block (6). When a front end loader
is equipped with the tractor, oil pressure is taken
from the front end loader flows back to this front
hydraulic block (6), to be returned into the oil hy-
draulic circuit.
3. After that oil into the position control valve (7) through
the delivery pipe.
(1) Oil Tank (Transmission Case)
(2) Hydraulic Oil Filter Cartridge
(3) Hydraulic Pump
(4) Engine
(5) Relief Valve
(6) Front Hydraulic Block
(7) Position Control Valve
(8) Hydraulic Cylinder
(9) Auxiliary Control Valve (If Equipped)
(10) Hydraulic Cylinder Block
4. The position control valve (7) switches the oil flow,
and oil is channeled to the hydraulic cylinder (8) for
the three-point hydraulic system or returned to the
oil tank (transmission case) (1).
* The hydraulic system has a relief valve (5) which
restricts the maximum pressure in the circuit.
* When hydraulic power is taken out to use a hydrau-
lically operated implement, implement’s cylinders
can be actuated by operating the double acting aux-
iliary control valve (9).
569W606B