Draft Control - wsm M7060 Workshop Manual

M6060, M7060, WSM

(2) Draft Control

Draft control is a system which keeps a constant traction load, and is suited for the work which needs heavy
traction load such as plowing.
The implement is automatically raised when its traction load is increased, and lowers when the traction load is
decreased. By keeping a constant load level, it prevents the tractor from slipping and being loaded excessively.
The setting traction load can be adjusted by changing the position of the draft control lever (5).
The draft control system uses the same control valve as the position control system. The traction load applied to
the tractor is sensed and is fed back to the control valve by means of the other linkage mechanism.
With this type of draft control, operation is as
described below according to the position of the draft
control lever.
1. When the draft control lever is set in the floating
range (1), the implement lowers to the ground.
2. When the draft control lever is set in the draft control
range (3), work is performed as follows.
• As the traction load applied to the tractor from
the implement increases, the implement is
raised.
• As the traction load decreases, the implement
lowers to the position at which it matches the
setting traction load.
3. When the implement is raised as described in 2
above, the force to raise the implement is applied to
the rear wheels so that the ground pressure of the
wheels is momentarily increased to prevent
slippage.
(Reference)
• When the draft control is used, the position control
lever should be set at "FLOATING" range.
• If the position control lever is set at working range,
both control systems operate performing mix control
system. (See page 7-M11.)
(1) Floating Range
(2) Deep
(3) Draft Control Range
7-M9
HYDRAULIC SYSTEM
9Y1210828HYM0009US0
(4) Shallow
(5) Draft Control Lever
9Y1210828HYM0010US0
KiSC issued 08, 2013 A