19
•
place the protection cover on the pins and the hook hole and secure with a pin,
•
connect the upper fastener with the sower.
CAUTION! Before lifting the disc harrow, the sower must be lifted to ensure
the stability of the implement.
4.4
Operation and adjustment
4.4.1
Automatic locking of the machine side extensions
On machines with folding sections, an automatic lock is available that requires no
additional operation. The lock uses a mechanism consisting of a cylinder and a hook
(Fig. 7).
Fig. 7 Main frame with automatic side extension locking mechanism.
4.4.2
Implement opening sequence
Before unfolding the folding side the extensions of the machine, learn the opening
sequence to perform this operation correctly.
1.
First, raise the implement as much as possible to be able to fold it correctly,
avoiding the risk of the folding arms snagging on the ground during movement
(Fig. 8).
2.
Next, fold the implement side extensions hydraulically into the “closed” position
to ensure that the side extension lock mechanism will unlock and allow the
implement arms to be opened at a later stage. This operation is necessary each
time the arms are opened (Fig. 8).
