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Maintenance instructions
22
600 Series
Auxiliary hydraulics: Pressure
is checked by mounting the
manometer in the female
auxiliary hydraulics quick
coupling, with full revs and by
turning the aux. hydraulics
control lever. Pressure setting
should be 205 bar.
Drive pressure: In order to
check the pressure in the drive circuit one needs to
mount a pressure gauge in the pressure line in each
and every case, if pressure seems to be clearly wrong.
There are two pressure relief cartridges which have
fixed 300 bar pressure setting. It is recommended
pressures should only be checked by a competent
and experienced technician. Call your AVANT
dealer if you need assistance.
9. ADJUST PRESSURE OF HYDR. SYSTEM
If the pressure of hydraulic system does not seem to
be correct or pressure check indicates that the pressure
is wrong, it can be adjusted. All adjustment screws
are protected with nuts and there is a seal ring under
each nut. When taking off the nuts make sure that the
seal rings doesnt get lost. See
pictures below for pressure
adjustment points.
Boom lifting: Pressure is
adjusted from the pressure
relief valve at the main control
valve. Pressure adjustment
screw is on the right, on top of
the valve segment (see picture).
Adjust by turning the hexagonal
head screw which is under the
cap.
Auxiliary hydraulics: Pressure
is adjusted from the pressure
relief valve at the main control
valve. Pressure adjustment
screw is on the right, under the
valve segment (see picture).
Adjust by turning the screw
with a screwdriver.
Drive pressure: Can not be
adjusted. If the pressures are
clearly wrong one must change the pressure relief
cartridges which have 300 bar fixed pressure setting.
10-13 ADJUST AND CHANGE THE
SLIDE PADS ON TELESCOPIC BOOM
The telescopic boom is equipped with slide pads. At
the lower end of the outer boom there are slide pads
made of nylon (nos. 1and 2) and bronze (nos. 3 and
4). In addition, there are four slide pads (nos. 5, 6, 7
and 8), made of aluminium-bronze alloy, at the upper
end of the inner boom. All slide pads can be replaced,
and the nylon slide pads on the outer boom can also
be adjusted. This way the natural wear of the slide
pads, caused be the use of the telescopic boom, can
be compensated.
Slide pads nos. 1 and 2
can be adjusted by mounting
thin adjustment sheets
between the boom and the
slide pad. Extend the
telescope almost completely
and press the boom against
the ground, it is the easiest
way to mount the
adjustment sheet under slide
pad no. 2. However, if there
is substantial wear in the
slide pads it is advisable to
replace both pad no. 1 and
2.
Slide pads nos. 3 and 4 on
the side of the outer boom
and slide pads nos. 5, 6, 7
and 8 at the upper end of
the inner boom last very
long in normal use.
Slide pads 3, 4, 5, 6, 7 and
8 should be checked every
400 operating hours.
Checking happens by taking
the inner boom completely
out of the outer boom. If
the pads have worn so much
that they are level with the
boom, change the pads.
Part nos. for the slide
pads are:
Slide pad 1 and 2: A48339
Slide pad 3 and 4: A48340
Slide pad 5 and 6: A47922
Slide pad 7 and 8: A48343
Washer under slide pads 5 and 6: A47941
Adjustment sheet, short: A48013
Adjustment sheet, long: A48014
6
8
5
7
2
1
3
4
WARRANTY DOES NOT COVER
DAMAGES CAUSED BY EXCESSIVE
HYDRAULIC PRESSURE.
NEVER EXCEED THE RECOMMENDED
HYDRAULIC PRESSURE SETTINGS.
EXCESSIVE HYDRAULIC PRESSURE WILL
DAMAGE THE HYDRAULIC PUMPS,
CYLINDERS, AND HYDRAULIC MOTORS.
22


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