. MAINTENANCE MAINTENANCE PROCEDURE MAINTENANCE MAINTENANCE PROCEDURE 4 - 49 2) Run th e engin e at low idling and swin g the work equipment 90° to bring it to the side of the track. 3) Jack u p the m achine until the track i ghtly from the gro und. R otate the trac k under n o loa d for 2 minutes. Repea t this pr ocedure on b oth the le ft and right side 8. Bleeding a ir from attachment ( when installed) NOTICE If the attachmen t maker specifies an air bleeding p rocedure fo r the a ttachment itse lf, follow the specified procedure to bl eed the air. f a breake r or othe r attachment has been installed, r un the engine a t lo w idling and operate the attachmen t pedal epeatedly (appro x.
10 times) until the ai r has been bled from the attachment circuit. NOTICE After complet ing the air bleeding op eration, sto p the engin e, and leave the machine for 5 minutes before starting ope rations. This will rem ove the a ir bubbles in t he oil insid e the h ydrau lic cylinders. Chec k that th ere is no leakage of oil and wipe o ff any oil th at has been