Hydraulics QUANTUM TIC
11-56 10/04
3.5 3/3 way solenoid valve (open/close tailgate)
Key to diagram
5 3/2 way open knife frame solenoid valve
6 3/2 way close knife frame solenoid valve
7 3/2 way open tailgate solenoid valve
8 3/2 way close tailgate solenoid valve
9 3/2 way tailgate pressureless solenoid valve
10 3/2 way lower articulated drawbar solenoid valve
11 3/2 way raise articulated drawbar solenoid valve
19 3/2 way tailgate pressure solenoid valve
A Working cylinder
H Lift valve
P Pump
S Lower valve
T Tank
Tailgate function
Neutral The master valve (14) and the solenoid valves switched off.
The locked pressure from the working cylinder is applied to the closed
ball of valve insert S.
Lifting The solenoid coils (7, 9 and 14) switch.
Pilot spool H opens the ball.
Oil flows from P to port A via the ball.
The oil flows to the hydraulic cylinders. The hydraulic cylinders extend.
Lowering The solenoid coils (8 and 9) switch. Pilot spool S opens the ball.
Oil flows from A to valve insert H via the ball.
The pilot spool moves upwards and clears the return line to port T. The
hydraulic cylinders retract.
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