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Shop manual máy đào HuynDai R250: An toan, cấu trúc, sơ đồ điện, thủy lực,
SECTION 3 HYDRAULIC SYSTEMGroup 1 Hydraulic Circuit 3-1Group 2 Main Circuit 3-2Group 3 Pilot Circuit 3-5Group 4 Single Operation 3-13Group 5 Combined Operation 3-23 GROUP 1 HYDRAULIC CIRCUITSECTION 3 HYDRAULIC SYSTEM8Last guard filter1 Main pump2 Main control valve3 Swing motor4 Travel motor5 RCV lever(LH)6 RCV lever(RH)7 RCV pedal8 Boom cylinder(LH)9 Boom cylinder(RH)10 Arm cylinder11 Bucket cylinder12 Turning joint13 Check valve14 Check valve15 Hydraulic tank16 Oil cooler17 Air breather18 Return filter1920Strainer21Spin filter22Line filter23Solenoid valve24Accumulator25Pressure switchGBGAAuSHPGBDr(dr4)MuARHLHCBD1P1P3PP2D2PP2D2P3P1D1dr3 BAB APkPi1V2EV2Pi1Edr7T(dr6)T(dr5)BoAoXBa2XAa2XAkAk1Bk1XBkPbLDr4XAb1Ab1Bb1XBbXBoXAoXAtrBtrAtrXBtrR2P2PyPGP1PzPxPHR1XAtlBtlAtlXBtlDr6BsAsXBsXAb2XAa1Dr3PnsCk1XAsPaLXBsXAb2XAa1a4a1a2B3B1a3Psv Pi2(Fr,MCV) Pi1(Fl,MCV)Pm2Pm1DrA2A1MXAoXBoSHJHFGEDBAXAa1(1)XBs(3)XAs(4)(2)(2)(1)XBtlXAtlTRAVEL(4)(2)(1)(3)(4)(3)XAtrXBtrXAk XBb1XAb1XBkXBa1BOOMBUCKETARMSWINGA5 Pns(MCV)P4P3P2P1A4 A3A2A1 Pm2(Pump) Pm1(Pump)PG(MCV)PG(S/Motor)T(dr2) Pk(T/Joint) Pz(MCV)Dr#,dr#XBsXAb2XBa1Ba1Aa1XAa1(XBp2)Dr1Dr2Dr3PnsCk1 XBp1PBPXAsFrFlPaLA39301110303332312272739382424364037373512018161314151917212322252667534124326 RCV pedal27 Boom cylinder(LH)30 Safety lock valve31 Safety lock valve32 Pressure switch33 Shutoff valve34 Tilt bucket pedal35 Accumulator36 Accumulator37 Stop valve38 Port relief valve39 Port relief valve40Selector valve3-125073HC01 . XBp1PBPXAsFrFlPaLA393 011 10303332 312 272739382424364037373 512 018 1 613 1 415 1 917 212 32225266753 412 4326 RCV pedal27 Boom cylinder(LH)30 Safety lock valve 31 Safety lock. APkPi1V2EV2Pi1Edr7T(dr6)T(dr5)BoAoXBa2XAa2XAkAk1Bk1XBkPbLDr4XAb1Ab1Bb1XBbXBoXAoXAtrBtrAtrXBtrR2P2PyPGP1PzPxPHR1XAtlBtlAtlXBtlDr6BsAsXBsXAb2XAa1Dr3PnsCk1XAsPaLXBsXAb2XAa1a4a1a2B3B1a3Psv Pi2(Fr,MCV)