Mahindra JINMA-200 Operation Manual page 48

B. Working principle of lifter
Fig.4-20 is a working principle diagram of position adjusting of the lifter (with simple
direction exchange valve and high adjustable performance). While pulling the operation
handle (10) to lowering position, position locating steel ball (8) falls into lowering the position
locating slot B on position locating block (7), meanwhile main control valve (5) moves right to
the lower position. The oil in the cylinder flows back into oil tank through main control valve
(5), and the implement begins to fall down. With the implement falling gradually, stop pin (2)
fixed on the stop plate of the lift shaft and the lift shaft together rotate around the lift shaft
counterclockwise, and slip along return push rod (4); after they slip to contact the lowering
position limiting stop block (3) fixed on the return push rod, they bring the return push rod
(4) move right together; at the same time turn the operation handle until position locating
steel ball (8) is pushed out of the position locating slot B. In such case, under the action of
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