* Emergency stop: see chapter 2.1
36
Fig. 14-0
1.
Filter block.
2.
Control block.
3.
Adjusting block. (On the back of the "neck").
4.
Wrapping arm block. (On the top of the machine.)
5.
Collecting block.
6.
Accumulator.
14.0
HYDRAULICS.
The AUTO WRAP 1510 / 1514 / TWIN machines
are driven by the tractor's hydraulic system. The
machine's hydraulic installation is easy to change from an open centre to a closed centre hydraulic
system. (See section 4.10).
The machine's hydraulics consist of a number of different blocks, and all the valves have a "V"
number. They are numbered in a logical sequence from the inlet and then onwards through the
whole machine. The valve blocks are marked with every individual valve number, as is the
hydraulics diagram.
During the wrapping sequence all three hydraulic motors on the machine are connected in series,
i.e. the oil goes first to the wrapping arm motor, and then to each of the roller motors and then back
to the tank.
Disconnecting the roller motors is done by means of a hydraulic connection on each of the roller
motors. When
ROLL WIDTH "OUT"(7)
is pressed, the oil travels simultaneously to the releasing
cylinders.
The accumulator is also shown in fig. 14-0. This absorbs any pressure surge during load and also
ensures that the distance between the bearer arms can increase a little when the rollers go "round
the corner" on square bales during loading.
The functions of each particular valve will now be discussed and explained.
Refer to the hydraulics diagram in section 18.0 for further clarification.
