TELELIFT 3713 SX
TECHNICAL SPECIFICATIONS
19
Document 57.4402.9200 - 1
st
Edition 10/2006
INDEX
. HYDRAULIC CALIBRATIONS
1.
PRELIMINARY OPERATIONS
Warm up the hydraulic oil to 80°C by keeping one of
the elements of the boommain valve to full stroke under
pressure.
To faster reach this temperature, cover the oil core of
the radiator with a piece of cardboard if the radiator is a
combined water-oil type; or cover the oil radiator if the
machine is equipped with a separate oil radiator.
.
CALIBRATING THE BOOM MAIN VALVE
Locate port
ref.
on the
Walvoil
main valve (encl. 1) to
connect the pressure gauge.
.1
CALIBRATING THE CONTROL VALVE OF THE
MAIN VALVE
Connect a 0-400 bar pressure gauge to port
ref.
. Lift
the boom to end of stroke.
Adjust valve
A
(encl. 1) of the Walvoil main valve at a
value of 280 bar keeping the cylinder to end of stroke
with the thermal engine running at max speed.
Also calibrate the fork inclination safety valves (position
B) of the
Walvoil
main valve (encl. 1):
• Move one of the cylinders to end of stroke and act
on valve
A
to set the pressure of the main valve at a
value of 300 bar.
• With the engine running at maximum speed, tilt the
forks using the joystick and act on one of the two
valves
B
until reaching a pressure value of 295 bar.
A
• Calibrate the second valve
B
tilting the forks to the
opposite direction.
• When both fork inclination safety valves have been
calibrated, reset the pressure control valve
A
at a
value of 280 bar operating the relevant adjustment
device.
.
CALIBRATING THE BLOCK VALVES OF THE
FORK BALANCE CYLINDER (encl. )
• Loosen the lock nuts of the valve and tighten the two
registers of cartridges
.
• Re-loosen of one turn and a half both valves and re-
tighten the lock nuts.
4.
SETTING THE SAFETY VALVES (encl. )
• With a 5mm Allen wrench and a 17mm hexagon
wrench, tighten valves L (encl.
2) till they are flush
with the upper face of the locknut.
B
L
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