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Table of Contents
S-2 Engine does not start .................................................................................................... 40- 523
S-3 Engine does not pick up smoothly................................................................................. 40- 526
S-4 Engine stops during operations..................................................................................... 40- 527
S-5 Engine does not rotate smoothly................................................................................... 40- 528
S-6 Engine lacks output (or lacks power) ............................................................................ 40- 529
S-7 Exhaust gas is black (incomplete combustion) ............................................................. 40- 530
S-8 Oil consumption is excessive (or exhaust gas is blue).................................................. 40- 531
S-9 Oil becomes contaminated quickly................................................................................ 40- 532
S-10 Fuel consumption is excessive.................................................................................... 40- 533
S-11 Oil is in coolant (or coolant spurts or coolant level goes down) .................................. 40- 534
S-12 Oil pressure drops ....................................................................................................... 40- 535
S-13 Oil level rises (coolant or fuel in oil)............................................................................. 40- 536
S-14 Coolant temperature rises too high (overheating) ....................................................... 40- 537
S-15 Unusual noise is made ................................................................................................ 40- 538
S-16 Vibration is excessive.................................................................................................. 40- 539
Troubleshooting hybrid system (Y-mode) ............................................................................... 40-540
Precautions related to hybrid machine................................................................................. 40- 540
Y-1 Hybrid monitor does not go out ..................................................................................... 40- 542
Y-2 Upper structure does not swing..................................................................................... 40- 544
Y-3 Swing acceleration or swing speed is low ..................................................................... 40- 546
Y-4 Upper structure overruns largely when stop swinging................................................... 40- 547
Y-5 Large shock is made when upper structure stops swinging.......................................... 40- 548
Y-6 Large unusual noise is made when upper structure stops swinging ............................. 40- 548
Y-7 Swing drift on a slope is large ....................................................................................... 40- 549
Y-8 Electric swing motor temperature increases abnormally............................................... 40- 550
Y-9 Motor-generator temperature increases abnormally ..................................................... 40- 552
Y-10 Inverter overheats ....................................................................................................... 40- 553
Y-11 Capacitor overheats .................................................................................................... 40- 554
50 Disassembly and assembly
General information on disassembly and assembly ............................................................... 50-
How to read Disassembly and Assembly............................................................................. 50-
Precautions related to hybrid machine................................................................................. 50-
Coating materials list............................................................................................................ 50-
Special tools list ................................................................................................................... 50- 10
Sketches of special tools ..................................................................................................... 50- 15
Engine and cooling system ..................................................................................................... 50- 20
Removal and installation of fuel supply pump assembly ..................................................... 50- 20
Removal and installation of fuel injector assembly .............................................................. 50- 25
Removal and installation of cylinder head assembly ........................................................... 50- 32
Removal and installation of radiator assembly .................................................................... 50- 55
Removal and installation of hydraulic oil cooler assembly................................................... 50- 57
Removal and installation of aftercooler assembly................................................................ 50- 59
Removal and installation of engine front seal ...................................................................... 50- 62
Removal and installation of engine rear seal ....................................................................... 50- 64
Removal and installation of fuel cooler assembly ................................................................ 50- 68
Removal (and installation) of engine, motor generator, and main pump assembly ............. 50- 70
Removal and installation of fuel tank assembly ................................................................... 50- 86
Hybrid...................................................................................................................................... 50- 89
Draining adding coolant and bleeding air for hybrid system ................................................ 50- 89
Removal and installation of hybrid radiator assembly.......................................................... 50- 93
Removal and installation of water pump assembly for hybrid system ................................. 50- 96
Removal and installation of inverter assembly..................................................................... 50- 99
Removal and installation of inverter and capacitor assembly .............................................. 50- 103
00-3-7
1 0
540
4
4
6
7
HB205-1, HB215LC-1
(03)
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