Branson F36r - Draft Control

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42hW-201601
CHAPTER 6 HYDRAULIC SYSTEM 3015R(h)/3515R(h)/4015R(h)/F36R(h)/F42R(h) TRACTOR
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Q25W622A
STOP VALVE
SAFETY VALVE
Oil from the pump pushes the piston through the
control valve to lift the lift arm. When the lift arm is
lowered by weight of the implement, oil in the piston
isownoutthroughcontrolvalveandisreturnedto
the transmission case.
The lowering speed of the implement can be
adjusted with the stop valve on the front of the
hydraulic cylinder case. Turning the stop valve
counterclockwise increases the lowering speed
while turning it clockwise decreases the lowering
speed. When turning the valve clockwise, it is locked
so the lift arm stops lowering.
4.13 DRAFT CONTROL
ᇡ⦹ᱡ⧎
K20W625A
The draft control is a device that controls load by
vertical movement of the lift arm (implement) against
load resistance of an implement during draft work
with an implement, such as a plow and cultivator.
When an implement is loaded, load is applied to the
top link connection (A) through the top link.
When the top link connection is applied with load, it
pushes the top link hinge at the point B. Then, the
bracket (2) is pushed forward to push the connecting
link DF (4). Therefore, the lower section of the link
DF is pulled at the shaft (3) so the draft rod (5)
connected to this lower section is pulled as well. As
a result, the draft arm (6) connected to the draft rod
is turned and the link in the hydraulic cylinder case
is operated to operate the control valve. Finally,
hydraulic oil pushes the piston in the hydraulic
cylinder to lift the lift arm. Then, the implement is
lifted to lessen applied load.
When draf t load is lowered, the implement is
lowered by its weight and oil in the cylinder is
pushed out by the piston.
To perform draft control, remove the connecting
plate (C). Make sure to install it after work.
K25W647A
load resistance