Pinguely-Haulotte HA20PX, Repair Manual

Page: 235 / 282

CORRECTIVE MAINTENANCE SHEET
CHANGING A BALANCING VALVE
FOR THE COMPENSATION FUNCTION
Sheet C082
Caution!
Ensure that the oil is not too
hot.
Caution!
Use a container to collect oil
to prevent pollution of the
environment.
Caution!
Balancing valves are safety
elements. They are calibrated
in the plant and must not be
re-adjusted.
1
1 - Preliminary operations
• Put the machine in the maintenance configuration (see corresponding
paragraph).
• Switch off electric power (see corresponding paragraph).
2 - Removing a balancing valve
• Remove the balancing valve (1) by unscrewing it.
3 - Installing a balancing valve
• Screw a new balancing valve, whose characteristics correspond to the
machine in question, into the hydraulic block. Tighten to a torque of 45 to
50 Nm (33 to 36.7 lb.ft).
• Put the machine back into the operational configuration.
• Make several movements using the replaced balancing valve to purge the
circuit.
• Check that the corresponding movement is made correctly.
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