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GEAX
s.r.l.
• switch the engine off;
• make sure that the hydraulic oil is at room temperature;
• depressurise the hydraulic circuit by loosening the hydraulic pipes
downstream the block valve (provide a suitable oil collection container);
at the same time beware of any mast movements ;
• fully detach the oil supply pipes, protecting the fittings (ends) from
contacts which may dirty them and let impurities circulate during
reassembly;
• pull out the first pin, positioned below, and getting ready to accompany
cylinder rotation;
MAINTENANCE ON URGENT FAULTS OF THE DRILLING M.
Chapter 4
fig.4.4.1.1
4-6
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