Service and maintenance
Avant 860i
128
Hydraulic hoses age over time. Exposure to sunlight
can accelerate aging of the hoses. Replace any hose
that has cracks on its surface when you bend the
hose.
13.
Measure pressures of hydraulic
circuits
It is recommended to leave the measurement and
adjustment of hydraulic pressures to qualified service
technicians. At minimum, a hydraulic pressure gauge
with appropriate measurement scale and fittings are
required to complete the measurement.
Adjustment should be left for qualified service
technicians. The specified pressures for each
hydraulic circuit must not be exceeded. Wrongly
made adjustment can cause significant damage to
the hydraulic components of the loader, and to the
metal structures of the loader. Also attachments may
get damaged.
WARNING
Risk of injection of hydraulic oil
- Wrong handling of the
hydraulic system or wrong tools
can cause ejection of hydraulic
oil.
It is recommended that
pressures should only be checked
or adjusted by a competent and
experienced technician. Contact
your AVANT dealer if you need
assistance.
Pressure measurement from multiconnector
To measure the pressure of the auxiliary hydraulics,
it recommended to use the pressure gauge adapter
A422475.
Boom control valve pressure
There are two pressure relief valves at the main
control valve of the boom and auxiliary hydraulics.
The auxiliary hydraulics pressure can be measured
from the multiconnector, but the boom pressure must
be measured from the valve assembly with a
pressure gauge that has a measurement fitting.
Contact Avant service for measurement and
adjustment.
1.
Auxiliary hydraulics pressure relief valve
2.
Boom hydraulics pressure relief valve
3.
Boom pressure measurement fitting
Never adjust pressure to higher
level than recommended setting.
The electric drive system is
designed to operate at the
intended pressure level. Other
settings can damage electric drive,
modify the response of the
controls, and decrease battery life.
Warranty will not cover for
damages caused by wrong
pressure setting. Never remove
tamper resistant seals from
pressure relief valves.
Drive pressure check
Drive pressure should be checked only by qualified
service technicians. If you suspect that the pulling
force of the loader has decreased contact your
nearest Avant service. There are two pressure relief
cartridges which have fixed pressure setting. Also
the power control valve, the hydraulic drive motors,
drive pump feed pressure, and brake release
pressure should be checked when investigating drive
system related troubles.
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