ALWAYS USE A PRESSURE GAUGE WHEN INSTALLING
TO MONITOR THE HYDRAULIC PRESSURE.
• Turn the pressure reducing valve clockwise to close it.
only close by hand, applying too much force on
the valve may damage the system.
• Pump the pump handle up and down to send oil down the pipe towards the jack, making it extend.
• Check the pressure gauge whilst using.
• NOTE: The pump is equipped with an overload valve which sends the oil back to the pump reservoir if
the system reaches its rated maximum pressure and overloads. If this happens, pumping will have no
effect of the system.
• In order to reduce the pressure, slowly turn the pressure valve in an anti-clockwise direction.
(The pressure release speed is controlled by the speed at which the valve opens).
Air can build up in the hydraulic system after the first use or prolonged use. This makes the jack slow or
unstable.
Purging trapped air:
• Place the jack lower down than
the pump with the end of the
piston facing downwards.
• Extend and retract the cylinder
multiple times, without putting
any load on the system. The air
is in the pump reservoir.
• Make sure that the cylinder is
not extended, the pump is
horizontal and that there is no
pressure on the hydraulic
system. Remove the refill cap.
Fill the reservoir with a suitable
hydraulic fluid; it should
reach 12.7mm below the top of
the reservoir.
• When you use extension bars
with the cylinder, the rated
capacity of the hydraulic
system is reduced by 50%.
The hydraulic system’s rated
capacity is reduced by 50%
again for each additional
extension used.
• When using two or more
extensions, always place the
shortest extension the furthest
from the cylinder.
PURGING THE AIR FROM THE SYSTEM
Duck bill spreader = 1/2 tonne
50% of the rated capacity
100% of the rated capacity
100% of the rated capacity
50% of the rated capacity
25% of the rated capacity
25% of the rated capacity
50% of the rated capacity
6% of the rated capacity