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Page 1: ...SERVICE MANUAL HYUNDAI EXCAVATOR R80 7...
Page 2: ...http marengine com r80 7 excavator...
Page 3: ...ilot Circuit 3 5 Group 4 Single Operation 3 10 Group 5 Combined Operation 3 22 SECTION 4 ELECTRICAL SYSTEM Group 1 Component Location 4 1 Group 2 Electrical Circuit 4 3 Group 3 Electrical Component Sp...
Page 4: ...BLY AND ASSEMBLY Group 1 Precaution 8 1 Group 2 Tightening Torque 8 4 Group 3 Pump Device 8 7 Group 4 Main Control Valve 8 25 Group 5 Swing Device 8 37 Group 6 Travel Device 8 58 Group 7 RCV Lever 8 8...
Page 5: ...draulic circuit single and combined operation SECTION 4 ELECTRICAL SYSTEM This section explains the electrical circuit monitoring system and each component It serves not only to give an understanding...
Page 6: ...ion before you start any work Filing method See the page number on the bottom of the page File the pages in correct order Following examples shows how to read the page number Example 1 2 3 Item number...
Page 7: ...t one place to the left to convert it to 55mm Carry out the same procedure as above to convert 55mm to 2 165 inches The original value 550mm was divided by 10 so multiply 2 165 inches by 10 Move the d...
Page 8: ...425 3 465 3 504 90 3 543 3 583 3 622 3 661 3 701 3 740 3 780 3 819 3 858 3 898 Kilogram to Pound 1kg 2 2046lb 0 1 2 3 4 5 6 7 8 9 0 2 20 4 41 6 61 8 82 11 02 13 23 15 43 17 64 19 84 10 22 05 24 25 26...
Page 9: ...455 22 719 22 983 23 247 23 511 90 23 775 24 040 24 304 24 568 24 832 25 096 25 631 25 625 25 889 26 153 Liter to U K Gallon 1 0 21997 U K Gal 0 1 2 3 4 5 6 7 8 9 0 0 220 0 440 0 660 0 880 1 100 1 32...
Page 10: ...629 3 636 5 643 7 90 651 0 658 2 665 4 672 7 679 9 687 1 694 4 701 6 708 8 716 1 100 723 3 730 5 737 8 745 0 752 2 759 5 766 7 773 9 781 2 788 4 110 795 6 802 9 810 1 817 3 824 6 831 8 839 0 846 3 85...
Page 11: ...80 1294 1309 1323 1337 1351 1365 1380 1394 1408 100 1422 1437 1451 1465 1479 1493 1508 1522 1536 1550 110 1565 1579 1593 1607 1621 1636 1650 1664 1678 1693 120 1707 1721 1735 1749 1764 1778 1792 1806...
Page 12: ...ng Torque 8 4 Group 3 Pump Device 8 7 Group 4 Main Control Valve 8 25 Group 5 Swing Device 8 37 Group 6 Travel Device 8 58 Group 7 RCV Lever 8 83 Group 8 Turning Joint 8 98 Group 9 Boom Arm and Bucket...
Page 13: ...any mistake when installing Check the number and thickness of the shims and keep in a safe place When raising components be sure to use lifting equipment of ample strength When using forcing screws t...
Page 14: ...connector to remove all oil dirt or water then connect securely When using eyebolts check that there is no deformation or deterioration and screw them in fully When tightening split flanges tighten un...
Page 15: ...en removed and installed again add engine oil to the specified level Run the engine to circulate the oil through the system Then check the oil level again If the piping or hydraulic equipment such as...
Page 16: ...he oil from the hydraulic tank Hydraulic tank quantity 75 Disconnect hoses 4 and remove connec tors 3 Disconnect pilot line hoses 6 8 and remove connectors 5 7 Remove socket bolts 2 and disconnect pum...
Page 17: ...e to stand the pump facing downward CAUTIONS DURING DISASSEMBLING AND ASSEMBLING Cautions for disassembling Never attempt operating the adjusting screws unless absolutely necessary Take utmost care du...
Page 18: ...raulic tank Escaping fluid under pressure can penetrate the skin causing serious injury Fit blind plugs in the hoses after disconnecting them to prevent dirt or dust from entering Set block between bu...
Page 19: ...of the pin do not insert your fingers in the pin hole Bleed the air from the bucket cylinder Confirm the hydraulic oil level and check the hydraulic oil leak or not 8 6 5 2 Sling bucket cylinder assem...
Page 20: ...8 125 DISASSEMBLY AND ASSEMBLY OF IDLER Structure 1 3 1 Shell 2 Shaft 3 Seal assembly 4 Bushing 5 Bracket 6 O ring 7 Spring pin 8 Plug 1 4 3 8 7 5 4 3 7 6 2 5 6 21078DA43...
Page 21: ...y remove bushing if replacement is necessity Pull out the shaft 2 with a press Remove seal 3 from idler 1 and bracket 5 Remove O ring 6 from shaft D Disassembly Remove plug and drain oil Draw out the...
Page 22: ...press it at the normal temperature or not knock in with a hammer even after the cooling 3 Press 6 2 5 7 3 2 1 1 4 Install shaft 2 to shell 1 Install seal 3 to shell 1 and bracket 5 Coat O ring 6 with...
Page 23: ...Lay bracket 5 on its side Supply engine oil to the specified level and tighten plug Knock in the spring pin 7 with a hammer Install bracket 5 attached with seal 3 R140LC 7 8 168 1 R140LC 7 8 168 2 R1...
Page 24: ...1 2 3 Cluster Wiper motor Beacon lamp A Item Tightening torque 1 2 M 6 1 0 M 8 1 25 1 05 0 2 2 5 0 5 7 6 1 45 18 1 3 6 Size kgf m lbf ft Item 3 M10 1 5 6 9 1 4 49 9 10 1 Size kgf m lbf ft 2 2 ELECTRIC...
Page 25: ...Case Caterpillar Cesab Challenger Champion Claas Clark Combilift Crown Daewoo Doosan Demag Deutz Fahr Dressta Machinery Drott Dynapack Extec Faun Fendt Fiat Fiatallis Flexicoil Furukawa Gehl Genie Gro...
