W h e n t h e d et e n t v a l v e i s
in operatio n, unnece ssary
load is applied to the engine.
Therefore, the engine power
decreases significantly, and
noise and vibration by opening
of the relief valve increases.
It is hard to start the engine
while the detent valve is in op-
eration. This is especially true
in winter and exhaust gas in-
creases even after the engine
is started.
IMPORTANT
This tractor is equipped with the
remote control valve of the double
acting type. However, this valve can
also be used in the single acting type
hydraulic cylinder.
1. Connect one end of the hydraulic
port to the single acting cylinder as
shown inthe gure. The hydraulic
pressure is properly supplied to the
cylinder. However, when the hydrau-
lic pressure is released, the cylinder
is contracted only if there is outer
force, such as potential energy.
SINGLE ACTING AND DOUBLE ACTING CYLINDER
(1) Single Acting Cylinder
(A) External Load
H11O585A
2. To contract the cylinder, operate
the lever to the opposite direc-
tion of the expansion. Then, the
hydraulicuidissuppliedfromthe
hydraulic pump to the hydraulic
port which is not connected, and
the pressure rises as the port is
blocked. However, this pressure is
released as the relief valve opens.
3. When the cylinder is contracted,
the hydraulic fluid returned from
the cylinder is drained to the trans-
mission through the draining circuit
(2) Double Acting Cylinder
M55O526A
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