chapter 6000
page 12
1,2 - 2,0 t A.C.
SERVICE MANUAL
Electric
036-0410-07
DESCRIPTION OF THE CONTROL VALVE BOX
Lifting box uses a solenoid valve EV2 ON/OFF for the lifting, a proportional solenoid valve for
the drain EVP1 and a valve for the maximum pressure.
Tilting box has a governor of oil capacity (12 l/m’). In this way the oil quantity is reduced when using
the double function: lifting-tilt. In this box there is also an OVER CENTER valve to avoid
any forward movement of the mast with load on the forks and the emptying of the tilt
cylinders in case of min. rpm of the motor.
Sideshift box has a governor of oil capacity (12 l/m’). In this way the oil quantity is reduced when using
the double function: lifting-sideshift. For safety reason the logic unit is set to the lower
speed.
4th WAY has two valves already set to 150 Bar. Shims are used in order to increase or decrease the
pressure. Each shim corresponds to 17 bar.
The solenoid valve EVP has been integrated in the circuit given that there is only one motor for both functions,
lifting and power steering. It allows the oil in excess to return into the tank, thus reducing the pressure in the
hydraulic control valve circuit.
By means of this valve it is possible to increase or decrease the sensitivity of the lifting by acting on control of
the valve (SEE MHYRIO setting funtion).
Version with fingertips control and joysticks
It consists of:
1. One 48 V lifting ON/OFF solenoid valve
One 24 V proportional solenoid valve for the lowering
2. Two 48 V ON/OFF tilt control solenoid valves
3. Two 48 V ON/OFF sideshift control solenoid valves
4. One 24 Vproportinonal valve for the drain.
To Next Page
Loading...
Need help?
General
