56
On each ground valveblock oil rate is controlled through the proportional valve
managed by the control module.
Depending on the movement required, proportional valve will open accordingly
regulating the oil rate, at the same time the relevant ON-OFF valves (one each
movement) will open feeding the relevant cylinder or drive gear motor.
Ground valveblocks maximum pressure valve has to be calibrated as indicated
on use and maintenance manual, at 180 bar with engine running at max speed.
When the proportional valve coil is not energized, oil flows back to the tank.
Left side ground valveblock controls the two left side outriggers (n.1 and n.2),
the left track drive gear motor and the tracks widening cylinders.
Right side ground valveblock controls the two right side outriggers (n.3 and
n.4) and the right track drive gear motor.
8.4.1
OUTRIGGERS
Outrigger cylinders are controlled by the cylinder valves block that is screwed
on the cylinder, when machine is setup on outriggers oil is kept under pressure
on the cylinder bottom side, against machine weight, by two piloted one-way
valves installed in series on the cylinder valves block.
Another piloted one-way valve is installed on the stem side.
While cylinder movements are in progress the opposite/s one-way valves is/are
piloted to open letting oil flow back to the valveblock.
BOTTOM
ONE-WAY
VALVES
STEM SIDE ONE-
WAY VALVE
Содержание LightLift 15.70 3S
Страница 1: ...1 TECHNICAL COURSE BOOKLET LightLift 15 70 3S PERFORMANCE TTLL1570021702 ...
Страница 12: ...12 ...
Страница 13: ...13 2 4 LL15 70 WORKING AREA 230 KG UNRESTRICTED CAPACITY ...
Страница 45: ...45 7 4 1 GASOLINE HONDA iGX390 EMERGENCY START ...
Страница 46: ...46 7 4 2 DIESEL HATZ 1B40 EMERGENCY START ...
Страница 49: ...49 8 2 HYDRAULIC DIAGRAM 8 2 1 HYDRAULIC DIAGRAM INDEX ...
Страница 50: ...50 8 2 2 PUMPS AND UNDERCARRIAGE PART HYDRAULIC DIAGRAM TO THE AERIAL PART VALVEBLOCK ...
Страница 51: ...51 8 2 3 AERIAL PART HYDRAULIC DIAGRAM FROM THE DEVIATOR VALVE ...
Страница 108: ...108 CELLS PACK WITHOUT COVER ...