Etesia HYDRO 124D, Technical Training Manual

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On the Hydro 124 D, the control valves are controlled electrically. They are grouped together
in 2 blocks.
Grassbox controls.
The first block is situated underneath the engine cover, under the electric module. It controls
the grassbox functions, namely :
- grassbox up / down (1)
- grassbox flap opening / closing (2)
- grassbox opening / closing (3)
Control valve (4), which is of the 2/2 type, does not control any particular function and yet it
plays an essential role.
It is activated at the same time as one of the 3 functions mentioned above.
If this slide does not let the oil through, none of the grassbox functions receives any
oil.
Control valve (5) was allocated to the "cutting deck up /down" function up to machine
100092. From machine no. 100093, this control valve was removed because the cutting deck
is now controlled by an electro-jack (see electrical chapter).