... portTravel(LH, Forward)Travel(LH, Backward)Travel(RH, Forward)Travel(RH, Backward)Port sizePF 1/4(290LC-7) 2-7 3
2-7 7CROSS SECTIONThe construction of the RCV pedal is shown in the below drawing. The casing ... Hexagon socket bolt30 Plug25721222019141512124523417 15131118309, 10162327 28 296826(290LC-7) 2-7 4
2-7 82. FUNCTIONFUNDAMENTAL FUNCTIONSThe pilot valve is a valve controls t...
... 3-2 3The oil from the front and rear pump flows through the neutral oil passage, bypass oil passage ... MOTORARM1BOOM2SWINGTRAVEL(LH)TRAVEL(RH)OPTIONBOOM1BUCKETARM2dr2~dr8BUCKET CYLINDERBOOM CYLINDERXBkXBp1STRAIGHTTRAVEL SPOOLGROUP 5 COMBINED OPERATION25073HC21
3-2 4When the swing and boom functions are operated, simultaneously the swing spool and boom spoolschanged. ... MOTORARM1BOOM2SW...
... SYSTEMGroup 1 Hydraulic Circuit 3-1 Group 2 Main Circuit 3-2 Group 3 Pilot Circuit 3-5 Group 4 Single Operation 3-1 3Group 5 Combined Operation 3-2 3
GROUP 1 HYDRAULIC CIRCUITSECTION ... Accumulator36 Accumulator37 Stop valve38 Port relief valve39 Port relief valve40Selector valve 3-1 25073HC01
... hydraulic tank through the control valve and the oilcooler.To oil coolerSuction filter(290LC-7) 3-2
3-3 All oil from each actuator returns to the hydraulic tank through the control valve.The bypass ... flow filterCheck valve(1)5.0kgf/cm2Check valve(2)3.0kgf/cm2Check valve(3)1.5kgf/cm2Oil cooler25073HC02
3-4 3. DRAIN CIRCUITBesides internal leaks from the motors and main pump, the oil...