Mechanism For Sequential Lifting And Lowering Of Working Units; Sequential Lifting - SaMASZ TANGO 730 Operator's Manual

To provide even better ground following, the rake has been equipped with transverse and
length-wise ground following function.
a)
20º
0º
8º
Applying 6-wheel trolleys as standard enabled reducing the pressure exerted by the rake onto
the ground, what is of particular significance when operating on soft grounds, e.g, turfs. Any minor
ground unevenness (e.g. stones) is levelled by movable, tandem wheels on the driving trolley.

5.8. Mechanism for sequential lifting and lowering of working units

Due to the rake's design, where working units are arranged in different distances in relation to
the tractor, a mechanism for sequential lifting and lowering of working units is applied, and it is
used when driving the machine to and from a meadow. When driving to a meadow and after
switching hydraulic section to floating position, the front working unit lowers and starts raking, and
in a while the rear enters the grass, lowers and starts raking as well. When leaving a meadow the
rotor at the tractor's side lifts up to headland position as first.

5.8.1. Sequential lifting

When switching to transport position, the rear rotor's hydraulic assembly remains locked until
the front rotor reaches the transport position. Only afterwards hydraulic lowering of the rear rotor is
released. When switching from transport position to working position the rotors lower in the reverse
order.
Switching time of the control valve (Z) is adjusted with screw (S) on the cam (K) (Fig. 26).
Turn the screw counter clockwise to set shorter time of delay in lifting of the rear unit against the
first unit. Turn the screw clockwise to set longer time of delay in lifting of the rear unit.
Fig. 26. Adjusting lifting time of front rotor against first rotor
Instruction manual
Fig. 25. Ground following: a) transverse, and b) length-wise
Z
S – Adjustment screw, Z – Valve, K – Cam
b)
5º
0º
5º
S
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Two rotor rake
TANGO
K