. MAINTENANCE MAINTENANCE PROCEDURE low not inside the cover on the right side of machine. 4 - 48 4. Bleeding air from NOTICE If the engine is run at hi gh speed immediately afte r startup or a cylinde r is pushe d up to its stroke end, air ta ken inside the cylinder may cause damage to t 1) Run the engi ne at a mid-range spee d (1650 rpm ) and extend a nd retract the cylinders 4 to 5 times to a poin 100 mm (3.9 in) from the end of the stroke. (B e caref ul not to operate to the end of th 2) Next, operat e each cylinder 3 to 4 t imes to the end of its strok 3) Finally, oper ate each cylinder 4 to 5 times to th e end of its stro ke to completely remov 5.
Bleeding air from swing moto (only after draini ng oil from swing moto NOTICE If the air is not bled fro m the swing motor, the m otor bearing s may b e damage 1) Loosen hose (3) while keeping the engine running at 2) idling. Tighte n it again once oil sta rts to flow attempt to m Run the engi ake a swing movemen ne at low idling, and ma t at that tim ke a swing slowly to the right and left more tha n twice eac 6. Bleeding air from Bleed air thro swing PPC circuit ugh air bleeder (4) inst 7.
Bleeding air from travel moto (only when oil in 1) Run the engi then when th (only when oil in side travel motor case has been d rained) 1) Run the engi ne at low idling, remov e hose (5) f rom po then when th e oil has flowed out, ti ghten it aga