MASSEY FERGUSON MF 135 - Draft Control System

When to Use Draft Control
Draft Control is used when the 3-point
hitch implement is of the soil-engaging type
and when the implement is required to main-
tain a uniform working depth and follow the
contour of the ground. When using a Draft
Controlled implement, such as a plow, sub-
soiler, etc. , the draft system automatically
maintains a furrow at implement work-
ing depth and transfers weight of the Trac-
tor rear wheels to provide traction, regard-
less of field undulations. When working in a
field that possesses various soil textures,
uniform depth can be maintained by minor
adjustments to the Draft Control Lever.
Fig. 21 - Using Draft Control
Using the Draft Control Lever
(See Fig. 21)
The Draft Control Lever is used to
raise, lower and re gu 1 ate the operating
depth of draft tools. When using the Draft
Control Lever, place the inner quadrant
lever in the transport position of the Position
Control range.
To lower a Draft Controlled implement
from the transport position to the ground,
move the Draft Control Lever down. If the
implement is running too shallow, continue
to move the Draft Control Lever down until
the desired depth is obtained. If the imple-
ment is running too deep, move the Draft
Control Lever up until the desired depth has
been obtained. The adjustable locator may
be set in line with the Draft Control Lever
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to be used as a reference. This will allow
the operator to lower the implement to the
same selected working depth.
To raise a Draft Controlled implement
to the transport position, move the Draft
Control Lever up until the transport posftion
is reached.
When to Use Response Control
Response Control is used in direct con-
junction with Draft Control. The Response
Control governs the rate at which 3-point
hitch implements are lowered to the ground
from the transport position, and governs the
rate the Draft Control System responds to
various draft loads. Response Control can
also be used with Position Control to regu-
late the implement lowering rate.
Fig. 22 - Using Response Control
Using Response Control (See Fig. 22)
Certain implements are very active in
the soil and cause rapid changes to the draft
load due to aggressive implement penetra-
tion. These rapid changes can be smoothed
out by moving the Response Control toward
the "slow" position. If the implement tends
to "float" in the soil (as indicated by pro-
gressively shallower implement depth), the
Draft response may be too slow. This can
be corrected by moving the Response Con-
trol toward the "fast" position until the
Draft Control System responds correctly.