HYDRAULIC SYSTEM
M6040, M7040, WSM
8-M11
(2) Draft Control
1. When the traction load increases, the torsion bar (12) is twisted, and its displacement is transmitted to the draft
feedback link shaft (5) via the draft feedback rod (13) and draft feedback lever (6). The draft feedback link shaft
(5) rotates.
The draft feedback link shaft (5) pushes the spool (4) in via the spool drive lever (3) and the "LIFT" circuit is
activated.
As the implement is raised and the traction load decreases, the torsion bar is restored to return the spool (4) to
neutral point.
2. When the traction load decreases, the torsion bar is restored and its displacement is transmitted to the draft
feedback link shaft (5) via the draft feedback rod (13) and draft feedback lever (6). As the draft feedback link shaft
(5) rotates, the spool drive lever (3) pulls the spool (4) to form the "DOWN" circuit.
As the implement lowers and the traction load increases, the torsion bar is twisted to return the spool (4) to neutral
position.
9Y1210143HYM0010US0
(1) Draft Link
(2) Draft Link Shaft
(3) Spool Drive Lever (Draft)
(4) Spool
(5) Draft Feedback Link Shaft
(6) Draft Feedback Lever
(7) Control Valve
(8) Draft Control Valve
(9) Draft Lever Shaft
(10) Draft Lever
(11) Lift Arm
(12) Torsion Bar
(13) Draft Feedback Rod
(14) Top Link Holder
A: Lift
B: Down
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