Great-plains Simba Double Press 2013 Operator Manual User Manual download pdf (Page 27)

27

Simba Double Press

610-026M-ENG

2013-01-25

4. Adjustment / Operation

4.5 Pitch Control

Pitch control on the Double Press is

governed by the quantity of shims tted to

the drawbar cylinder. Increasing the number

of shims will lift the front of the chassis when

lowered into the work position.

Running the Double Press level allows the

press rings to give an even consolidation

and clod crushing action.

Running the machine significantly nose

down or raised will reduce the load on the

rear axle leading to loss of drive of the axle

and then blockage, together with a reduced

consolidation effect.

If any roll axle starts to block regularly, this

is generally an indication that the roll axle

is not tight. Failure to keep the axles tight

results in loss of drive between each pair of

rings allowing rings to turn individually on

the axle. Should this occur the axle must

be tightened immediately to prevent any

damage occurring to the axle shaft.

If the roll axles start to block regularly this

may also be an indication that the ground

conditions are too wet for the Double Press

to be effective.

In practice it is possible to use the Double

Press on ground conditions that are

unsuitable to achieve the desired effect,

and it is usually possible to operate the

machine without regular blockage under

such unsuitable conditions, assuming that

the axles are tight and rings smooth.

As such, especially under wet conditions, it

is advisable to check on the cultivation effect

of the Double Press. Often the use of the

press 12 - 24 hours after the disc or longer

following the plough gives a far superior

surface consolidation effect.

It is not necessary to tilt the Double Press onto

the transport wheels during headland turns

whether the machine is used independently

or in tandem with a disc cultivator.

Fully extending the drawbar

cylinder and then reversing into

the headland furrow could lead to

damage of the cylinder.

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