SEN04114-06
30 Testing and adjusting
46
PC130-8
Checking parts which cause
hydraulic drift of work
equipment
1
a
If the work equipment (cylinder) drifts hydrauli-
cally, check to see if the cause is on the cylin-
d e r p a c k i n g s i d e o r c o n t r o l v a l v e s i d e
according to the following procedure.
1.
Checking boom cylinder and bucket cylinder
1)
Set the machine in the position for testing
hydraulic drift and stop the engine.
a
Fill the bucket with a rated load or
with dirt and sand.
2)
When checking the boom cylinder, set the
boom control lever in the RAISE position.
When checking the bucket cylinder, set the
bucket control lever in the CURL position.
q
If the lowering speed is increased at this
time, the cylinder packing is defective.
q
If the lowering speed does not change at
this time, the control valve is defective.
a
Operate the control lever while the
starting switch is in the ON position.
a
If the pressure in the accumulator is
lost, run the engine for about 5 sec-
onds to heighten the pressure in the
accumulator.
2.
Checking arm cylinder
1)
Stop the arm cylinder about 100 mm before
the IN stroke end and stop the engine.
2)
Operate the arm control lever in the IN
position.
q
If the lowering speed is increased at
this time, the cylinder packing is
defective.
q
If the lowering speed does not change
at this time, the control valve is defec-
tive.
a
Operate the control lever while the
starting switch is in the ON position.
a
If the pressure in the accumulator is
lost, run the engine for about 5 sec-
onds to heighten the pressure in the
accumulator.
[
Reference
]
Reason why the lowering speed is increased
by the above operation when the cylinder
packing is the cause of the hydraulic drift:
1)
If the machine is set in the above position
(where the holding pressure is applied to
the bottom side), the oil leaks from the
bottom side to the head side. Since the
volume on the head side is less than that
on the bottom side by the volume of the
rod, the pressure in the head side is
increased by the oil flowing in from the
bottom side.
2)
As the pressure in the head side is
increased, it is balanced at a certain level
(which depends on the leakage), and then
the lowering speed is lowered.
3)
If the circuit on the head side is opened to
the drain circuit by the above operation of
the lever (the bottom side is closed by the
check valve at this time), the oil on the
head side flows in the drain circuit. As a
result, the pressure is unbalanced and the
lowering speed is increased.
Summary of Contents for PC130-8
Page 1: ...HYDRAULIC EXCAVATOR SEN03763 13 PC130 8 SERIAL NUMBERS 80001 and up ...
Page 2: ......
Page 13: ...00 Index and foreword SEN03765 13 PC130 8 11 ...
Page 55: ...00 Index and foreword SEN03766 02 PC130 8 41 ...
Page 63: ...01 Specification SEN03768 01 PC130 8 7 ...
Page 70: ...SEN03770 01 10 Structure function and maintenance standard 2 PC130 8 Engine mount 1 ...
Page 72: ...SEN03770 01 10 Structure function and maintenance standard 4 PC130 8 Cooling system 1 ...
Page 95: ...10 Structure function and maintenance standard SEN03773 00 PC130 8 3 ...
Page 97: ...10 Structure function and maintenance standard SEN03773 00 PC130 8 5 ...
Page 113: ...10 Structure function and maintenance standard SEN03773 00 PC130 8 21 ...
Page 127: ...10 Structure function and maintenance standard SEN03773 00 PC130 8 35 ...
Page 131: ...10 Structure function and maintenance standard SEN03774 01 PC130 8 3 ...
Page 132: ...SEN03774 01 10 Structure function and maintenance standard 4 PC130 8 ...
Page 134: ...SEN03774 01 10 Structure function and maintenance standard 6 PC130 8 ...
Page 136: ...SEN03774 01 10 Structure function and maintenance standard 8 PC130 8 ...
Page 138: ...SEN03774 01 10 Structure function and maintenance standard 10 PC130 8 ...
Page 143: ...10 Structure function and maintenance standard SEN03774 01 PC130 8 15 ...
Page 151: ...10 Structure function and maintenance standard SEN03774 01 PC130 8 23 ...
Page 177: ...10 Structure function and maintenance standard SEN03775 04 PC130 8 3 ...
Page 182: ...SEN03775 04 10 Structure function and maintenance standard 8 PC130 8 ...
Page 192: ...SEN03775 04 10 Structure function and maintenance standard 18 PC130 8 ...
Page 207: ...10 Structure function and maintenance standard SEN03775 04 PC130 8 33 ...
Page 210: ...SEN03775 04 10 Structure function and maintenance standard 36 PC130 8 Solenoid valve 1 ...
Page 213: ...10 Structure function and maintenance standard SEN03775 04 PC130 8 39 ...
Page 225: ...10 Structure function and maintenance standard SEN03775 04 PC130 8 51 ...
Page 231: ...10 Structure function and maintenance standard SEN03776 00 PC130 8 3 ...
Page 234: ...SEN03776 00 10 Structure function and maintenance standard 6 PC130 8 Bucket ...
Page 239: ...10 Structure function and maintenance standard SEN03777 00 PC130 8 3 ...
Page 243: ...10 Structure function and maintenance standard SEN03778 03 PC130 8 3 1 ...
Page 267: ...10 Structure function and maintenance standard SEN03778 03 PC130 8 27 Pump controller ...
Page 273: ...10 Structure function and maintenance standard SEN03778 03 PC130 8 33 ...
Page 277: ...10 Structure function and maintenance standard SEN03778 03 PC130 8 37 Display ...
Page 297: ...10 Structure function and maintenance standard SEN03778 03 PC130 8 57 ...
Page 309: ...20 Standard value table SEN04113 02 PC130 8 11 Work equipment 7 Bucket time lag ...
Page 381: ...30 Testing and adjusting SEN04114 06 PC130 8 71 ...
Page 447: ...30 Testing and adjusting SEN04116 00 PC130 8 13 ...
Page 459: ...40 Troubleshooting SEN04118 02 PC130 8 3 Sequence of events in troubleshooting 1 ...
Page 468: ...SEN04118 02 40 Troubleshooting 12 PC130 8 ...
Page 469: ...40 Troubleshooting SEN04118 02 PC130 8 13 ...
Page 470: ...SEN04118 02 40 Troubleshooting 14 PC130 8 ...
Page 471: ...40 Troubleshooting SEN04118 02 PC130 8 15 ...
Page 472: ...SEN04118 02 40 Troubleshooting 16 PC130 8 ...
Page 473: ...40 Troubleshooting SEN04118 02 PC130 8 17 ...
Page 474: ...SEN04118 02 40 Troubleshooting 18 PC130 8 ...
Page 475: ...40 Troubleshooting SEN04118 02 PC130 8 19 ...
Page 476: ...SEN04118 02 40 Troubleshooting 20 PC130 8 ...
Page 477: ...40 Troubleshooting SEN04118 02 PC130 8 21 ...
Page 478: ...SEN04118 02 40 Troubleshooting 22 PC130 8 ...
Page 479: ...40 Troubleshooting SEN04118 02 PC130 8 23 ...
Page 480: ...SEN04118 02 40 Troubleshooting 24 PC130 8 ...
Page 481: ...40 Troubleshooting SEN04118 02 PC130 8 25 ...
Page 482: ...SEN04118 02 40 Troubleshooting 26 PC130 8 ...
Page 483: ...40 Troubleshooting SEN04118 02 PC130 8 27 ...
Page 484: ...SEN04118 02 40 Troubleshooting 28 PC130 8 ...
Page 485: ...40 Troubleshooting SEN04118 02 PC130 8 29 ...
Page 486: ...SEN04118 02 40 Troubleshooting 30 PC130 8 ...
Page 487: ...40 Troubleshooting SEN04118 02 PC130 8 31 ...
Page 488: ...SEN04118 02 40 Troubleshooting 32 PC130 8 ...
Page 489: ...40 Troubleshooting SEN04118 02 PC130 8 33 ...
Page 490: ...SEN04118 02 40 Troubleshooting 34 PC130 8 ...
Page 491: ...40 Troubleshooting SEN04118 02 PC130 8 35 ...
Page 492: ...SEN04118 02 40 Troubleshooting 36 PC130 8 ...
Page 493: ...40 Troubleshooting SEN04118 02 PC130 8 37 ...
Page 494: ...SEN04118 02 40 Troubleshooting 38 PC130 8 ...
Page 495: ...40 Troubleshooting SEN04118 02 PC130 8 39 ...
Page 496: ...SEN04118 02 40 Troubleshooting 40 PC130 8 ...
Page 497: ...40 Troubleshooting SEN04118 02 PC130 8 41 ...
Page 498: ...SEN04118 02 40 Troubleshooting 42 PC130 8 ...
Page 499: ...40 Troubleshooting SEN04118 02 PC130 8 43 ...
Page 500: ...SEN04118 02 40 Troubleshooting 44 PC130 8 ...
Page 501: ...40 Troubleshooting SEN04118 02 PC130 8 45 ...
Page 502: ...SEN04118 02 40 Troubleshooting 46 PC130 8 ...
Page 513: ...40 Troubleshooting SEN04119 01 PC130 8 7 Circuit diagram related ...
Page 517: ...40 Troubleshooting SEN04119 01 PC130 8 11 ...
Page 519: ...40 Troubleshooting SEN04119 01 PC130 8 13 Circuit diagram related ...
Page 521: ...40 Troubleshooting SEN04119 01 PC130 8 15 ...
Page 524: ...SEN04119 01 40 Troubleshooting 18 PC130 8 Circuit diagram related ...
Page 529: ...40 Troubleshooting SEN04119 01 PC130 8 23 ...
Page 531: ...40 Troubleshooting SEN04119 01 PC130 8 25 Circuit diagram related ...
Page 533: ...40 Troubleshooting SEN04119 01 PC130 8 27 ...
Page 535: ...40 Troubleshooting SEN04119 01 PC130 8 29 Circuit diagram related ...
Page 537: ...40 Troubleshooting SEN04119 01 PC130 8 31 ...
Page 539: ...40 Troubleshooting SEN04119 01 PC130 8 33 Circuit diagram related ...
Page 547: ...40 Troubleshooting SEN04119 01 PC130 8 41 ...
Page 549: ...40 Troubleshooting SEN04119 01 PC130 8 43 Circuit diagram related ...
Page 553: ...40 Troubleshooting SEN04119 01 PC130 8 47 Circuit diagram related ...
Page 555: ...40 Troubleshooting SEN04119 01 PC130 8 49 Circuit diagram related ...
Page 557: ...40 Troubleshooting SEN04119 01 PC130 8 51 Circuit diagram related ...
Page 559: ...40 Troubleshooting SEN04119 01 PC130 8 53 Circuit diagram related ...
Page 566: ...SEN04120 03 40 Troubleshooting 6 PC130 8 Circuit diagram related ...
Page 569: ...40 Troubleshooting SEN04120 03 PC130 8 9 Circuit diagram related ...
Page 587: ...40 Troubleshooting SEN04120 03 PC130 8 27 Circuit diagram related ...
Page 589: ...40 Troubleshooting SEN04120 03 PC130 8 29 Circuit diagram related ...
Page 591: ...40 Troubleshooting SEN04120 03 PC130 8 31 Circuit diagram related ...
Page 595: ...40 Troubleshooting SEN04120 03 PC130 8 35 Circuit diagram related ...
Page 597: ...40 Troubleshooting SEN04120 03 PC130 8 37 Circuit diagram related ...
Page 599: ...40 Troubleshooting SEN04120 03 PC130 8 39 ...
Page 601: ...40 Troubleshooting SEN04120 03 PC130 8 41 Circuit diagram related ...
Page 604: ...SEN04120 03 40 Troubleshooting 44 PC130 8 Circuit diagram related ...
Page 607: ...40 Troubleshooting SEN04120 03 PC130 8 47 Circuit diagram related ...
Page 611: ...40 Troubleshooting SEN04121 02 PC130 8 3 ...
Page 613: ...40 Troubleshooting SEN04121 02 PC130 8 5 Circuit diagram related ...
Page 615: ...40 Troubleshooting SEN04121 02 PC130 8 7 Circuit diagram related to rear view monitor ...
Page 617: ...40 Troubleshooting SEN04121 02 PC130 8 9 ...
Page 619: ...40 Troubleshooting SEN04121 02 PC130 8 11 Circuit diagram related ...
Page 621: ...40 Troubleshooting SEN04121 02 PC130 8 13 ...
Page 623: ...40 Troubleshooting SEN04121 02 PC130 8 15 Circuit diagram related ...
Page 625: ...40 Troubleshooting SEN04121 02 PC130 8 17 Circuit diagram related ...
Page 627: ...40 Troubleshooting SEN04121 02 PC130 8 19 Circuit diagram related ...
Page 629: ...40 Troubleshooting SEN04121 02 PC130 8 21 Circuit diagram related ...
Page 631: ...40 Troubleshooting SEN04121 02 PC130 8 23 Circuit diagram related ...
Page 637: ...40 Troubleshooting SEN04121 02 PC130 8 29 Circuit diagram related ...
Page 639: ...40 Troubleshooting SEN04121 02 PC130 8 31 Circuit diagram related ...
Page 641: ...40 Troubleshooting SEN04121 02 PC130 8 33 Circuit diagram related ...
Page 643: ...40 Troubleshooting SEN04121 02 PC130 8 35 Circuit diagram related ...
Page 645: ...40 Troubleshooting SEN04121 02 PC130 8 37 Circuit diagram related ...
Page 647: ...40 Troubleshooting SEN04121 02 PC130 8 39 Circuit diagram related ...
Page 649: ...40 Troubleshooting SEN04121 02 PC130 8 41 Circuit diagram related ...
Page 651: ...40 Troubleshooting SEN04121 02 PC130 8 43 Circuit diagram related ...
Page 655: ...40 Troubleshooting SEN04122 01 PC130 8 3 Circuit diagram related ...
Page 657: ...40 Troubleshooting SEN04122 01 PC130 8 5 Circuit diagram related ...
Page 659: ...40 Troubleshooting SEN04122 01 PC130 8 7 Circuit diagram related ...
Page 661: ...40 Troubleshooting SEN04122 01 PC130 8 9 Circuit diagram related ...
Page 663: ...40 Troubleshooting SEN04122 01 PC130 8 11 Circuit diagram related ...
Page 665: ...40 Troubleshooting SEN04122 01 PC130 8 13 Circuit diagram related ...
Page 667: ...40 Troubleshooting SEN04122 01 PC130 8 15 Circuit diagram related ...
Page 669: ...40 Troubleshooting SEN04122 01 PC130 8 17 Circuit diagram related ...
Page 671: ...40 Troubleshooting SEN04122 01 PC130 8 19 Circuit diagram related ...
Page 673: ...40 Troubleshooting SEN04122 01 PC130 8 21 Circuit diagram related ...
Page 681: ...40 Troubleshooting SEN04123 01 PC130 8 7 Circuit diagram related ...
Page 683: ...40 Troubleshooting SEN04123 01 PC130 8 9 Circuit diagram related ...
Page 687: ...40 Troubleshooting SEN04123 01 PC130 8 13 Circuit diagram related ...
Page 689: ...40 Troubleshooting SEN04123 01 PC130 8 15 Circuit diagram related ...
Page 691: ...40 Troubleshooting SEN04123 01 PC130 8 17 ...
Page 695: ...40 Troubleshooting SEN04123 01 PC130 8 21 Circuit diagram related ...
Page 697: ...40 Troubleshooting SEN04123 01 PC130 8 23 Circuit diagram related ...
Page 711: ...40 Troubleshooting SEN04123 01 PC130 8 37 Circuit diagram related ...
Page 713: ...40 Troubleshooting SEN04123 01 PC130 8 39 ...
Page 717: ...40 Troubleshooting SEN04123 01 PC130 8 43 Circuit diagram related ...
Page 730: ...SEN04123 01 40 Troubleshooting 56 PC130 8 Circuit diagram related ...
Page 733: ...40 Troubleshooting SEN04123 01 PC130 8 59 Circuit diagram related ...
Page 735: ...40 Troubleshooting SEN04123 01 PC130 8 61 Circuit diagram related ...
Page 737: ...40 Troubleshooting SEN04123 01 PC130 8 63 Circuit diagram related ...
Page 739: ...40 Troubleshooting SEN04123 01 PC130 8 65 Circuit diagram related ...
Page 741: ...40 Troubleshooting SEN04123 01 PC130 8 67 Circuit diagram related ...
Page 743: ...40 Troubleshooting SEN04123 01 PC130 8 69 Circuit diagram related ...
Page 745: ...40 Troubleshooting SEN04123 01 PC130 8 71 Circuit diagram related ...
Page 747: ...40 Troubleshooting SEN04123 01 PC130 8 73 Circuit diagram related ...
Page 749: ...40 Troubleshooting SEN04123 01 PC130 8 75 ...
Page 754: ...SEN04124 00 40 Troubleshooting 4 PC130 8 System chart for hydraulic and mechanical systems 1 ...
Page 781: ...40 Troubleshooting SEN04125 02 PC130 8 3 ...
Page 783: ...40 Troubleshooting SEN04125 02 PC130 8 5 ...
Page 819: ...50 Disassembly and assembly SEN04126 02 PC130 8 15 ...
Page 859: ...50 Disassembly and assembly SEN04127 02 PC130 8 39 ...
Page 865: ...50 Disassembly and assembly SEN04128 01 PC130 8 5 ...
Page 866: ...SEN04128 01 50 Disassembly and assembly 6 PC130 8 ...
Page 945: ...50 Disassembly and assembly SEN04130 01 PC130 8 17 ...
Page 947: ...50 Disassembly and assembly SEN04130 01 PC130 8 19 ...
Page 949: ...50 Disassembly and assembly SEN04130 01 PC130 8 21 ...
Page 951: ...50 Disassembly and assembly SEN04130 01 PC130 8 23 ...
Page 953: ...50 Disassembly and assembly SEN04130 01 PC130 8 25 ...
Page 955: ...50 Disassembly and assembly SEN04130 01 PC130 8 27 ...
Page 977: ...50 Disassembly and assembly SEN04131 00 PC130 8 5 ...
Page 1025: ...50 Disassembly and assembly SEN04134 00 PC130 8 13 ...
Page 1028: ...SEN03784 00 90 Diagrams and drawings 2 PC130 8 ...
Page 1031: ...90 Diagrams and drawings SEN03784 00 PC130 8 7 ...
Page 1034: ...SEN03785 02 90 Diagrams and drawings 2 PC130 8 ...
Page 1042: ...90 Diagrams and drawings SEN03785 02 PC130 8 17 ...