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2.
Hydraulic Supply
2.1
All working movements of the tree spade are performed hydraulically. The hydraulic
pressure is provided by a hydraulic pump integrated in the Volvo truck A25 D.
The truck and the tree spade work with biological hydraulic oil PANOLIN HLP SYNTH
(Synth HLP 46) and it should never be mixed with a petroleum-based hydraulic oil. For
specifications of hydraulic oil, please refer to annex.
In order to avoid any damages to the hydraulic system and related components, samples
of the hydraulic oil must be taken regularly. This is extremely important because regular
sampling is precondition for any damages claim.
Impurities in the oil must not exceed purity class 19/15/11 as per ISO 4406.
The first sampling and examination must be made after 50 working hours, each following
sampling becomes due after every 1000 working hours.
The intervals for changing the hydraulic oil must be strictly observed, otherwise the
durability of sealing components and hose pipes cannot be guaranteed.
In case the PANOLIN HLP SYNTH-run hydraulic system is changed on a petroleum-
based hydraulic oil, the instructions of the truck manufacturer are to be followed.
2.2
For technical information on the hydraulic pump such as filling quantities and servicing
intervals, please refer to the instruction manual of the truck manufacturer.
2.3
All working movements of the tree spade can be controlled either from the control panel
installed inside the driver’s cabin or they can be actuated by the manual valves installed at
the base frame of the superstructure or the digging head respectively.