Bedienungsanleitung Avant 630 (Seite 22 von 28) (Englisch)

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Maintenance instructions

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

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

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.

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