Three Point Hydraulic System; Feedback Linkage; Control Valve - wsm B2420 Workshop Manual

B2420, WSM

4. THREE POINT HYDRAULIC SYSTEM

[1] FEEDBACK LINKAGE

When the hydraulic control lever (1) is moved to rearward to lift the implement, the spool of the control valve (7)
is pulled out to form a raising circuit. Then the lift arm begins to rise.
And after the lift arm (6) gets to the uppermost position, the spool is pushed in and returned to form a neutral
circuit by the motions of feedback pin (4), lock nut (5), feedback rod (2), control lever arm (9) and control lever shaft
(8).
8-M4
HYDRAULIC SYSTEM
(1) Hydraulic Control Lever
(2) Feedback Rod
(3) Interlocker
(4) Feedback Pin
(5) Lock Nut
(6) Lift Arm

(7) Control Valve

(8) Control Lever Shaft
(9) Control Lever Arm
A: When the hydraulic control
lever is moved to rearward
B: When the lift arm gets to
the uppermost position
9Y1210436HYM0004US0
KiSC issued 06, 2012 A