Kubota MX5100 Workshop Manual page 370

MX5100, WSM
When the draft control lever (9) is operated in the draft control operating range, the draft control lever shaft (6) is
rotated, causing the draft cam (5) to move toward the roller (15) installed on the draft control link 2 (14).
(Reference)
• The sensitivity of the draft control can be adjusted by changing the gap between the draft cam (5) and the roller
(15) by the draft control lever (9).
Movement of the Link Under Increased Load
1. When the traction load is increased, the torsion bar (18) is twisted according to the load, the draft control rod (16)
and the draft cam (5) are pushed to come into contact with the roller (15).
2. Using the a portion as the fulcrum, the draft control link 2 (14) and the draft control link 1 (13) move to push the
arm 1 (12).
3. At the same time, the arm 2 (10) is moved, the connected position control valve becomes the lift circuit, and the lift
arm (1) goes up.
Movement of the Link Under decreased Load
1. When the lift arm (1) rises up, the traction load is decreased, and the draft control rod (16) is returned.
2. At the same time, the arm 2 (10), arm 1 (12), and draft control link 1 (13) are returned by the return spring (11).
3. The position control valve becomes the down circuit, and the lift arm (1) is lowered.
(Reference)
• The feedback rod (4) of the draft control is provided to maintain the positional relation of the draft cam (5) and the
roller (15) to certain state regardless of the height of the lift arm (1).
8-M12
HYDRAULIC SYSTEM
(1) Lift Arm
(2) Hydraulic Arm Shaft
(3) Feedback Rod Stay
(4) Feedback Rod
(5) Draft Cam
(6) Draft Control Lever Shaft
(7) Position Control Link
(8) Position Control Lever
(9) Draft Control Lever
(10) Arm 2
(11) Return Spring
(12) Arm 1
(13) Draft Control Link 1
(14) Draft Control Link 2
(15) Roller
(16) Draft Control Rod
(17) Top Link Holder
(18) Torsion Bar
(19) Top Link
A : Movement of the Link
Under Increase Load
B : Movement of the Link
Under Decreased Load
a : Portion of Feedback Rod
W1020529