Table of contents
PC800, 850-8E0
H-13 Heavy lift function does not work or is not released .................................................... 40- 431
H-14 Machine push-up function does not work or is not released ....................................... 40- 431
H-15 Boom shockless function does not work or is not canceled........................................
40- 431
H-16 Machine deviates in one direction against operator's intention when travelling.......... 40- 432
H-17 Machine deviates significantly at start......................................................................... 40- 435
H-18 Machine deviates significantly during combined operation ......................................... 40- 436
H-19 Travel works slow or lack power ................................................................................. 40- 437
H-20 One of tracks does not run.......................................................................................... 40- 438
H-21 Travel speed does not change.................................................................................... 40- 439
H-22 Upper structure does not swing .................................................................................. 40- 440
H-23 Swing speed is low or swing acceleration is poor ....................................................... 40- 441
H-24 In combined operation with work equipment, swing speed is low or swing acceleration is poor
............................................................................................................................................. 40- 442
H-25 Upper structure overruns excessively when it stops swinging .................................... 40- 444
H-26 Shock is large when upper structure stops swinging .................................................. 40- 445
H-27 Large unusual noise is heard when upper structure stops swinging...........................
40- 446
H-28 Swing drift on a slope is large .....................................................................................
40- 447
H-29 Fan revolution is abnormal (Fan sound/vibration is abnormally large or engine overheats)
............................................................................................................................................. 40- 448
Troubleshooting of engine (S-mode) ...................................................................................... 40- 450
Method of using troubleshooting chart................................................................................. 40- 450
S-1 Startability is poor.......................................................................................................... 40- 454
S-2 Engine does not start .................................................................................................... 40- 456
S-3 Engine does not pick up smoothly................................................................................. 40- 460
S-4 Engine stops during operation....................................................................................... 40- 461
S-5 Engine runs rough or is unstable................................................................................... 40- 462
S-6 Engine lacks power ....................................................................................................... 40- 464
S-7 Exhaust smoke is black (incomplete combustion)......................................................... 40- 466
S-8 Oil consumption is excessive (or exhaust smoke is blue) ............................................. 40- 468
S-9 Oil becomes contaminated early ................................................................................... 40- 469
S-10 Fuel consumption is excessive.................................................................................... 40- 470
S-11 Oil is in coolant (or coolant spurts or coolant level goes down) ..................................
40- 471
S-12 Oil pressure drops ....................................................................................................... 40- 472
S-13 Oil level rises (coolant or fuel in oil)............................................................................. 40- 474
S-14 Coolant temperature rises too high (overheating) ....................................................... 40- 476
S-15 Unusual noise is made ................................................................................................ 40- 477
S-16 Vibration is excessive..................................................................................................
40- 478
50 Disassembly and assembly
General information on disassembly and assembly ............................................................... 50-
4
How to read Disassembly and Assembly............................................................................. 50-
4
Coating materials list............................................................................................................ 50-
6
Special tools list ................................................................................................................... 50-
9
Sketches of special tools ..................................................................................................... 50- 16
Engine and cooling system ..................................................................................................... 50- 21
Removal and installation of engine, PTO and hydraulic pump assembly ............................ 50- 21
Removal and installation of cooling assembly ..................................................................... 50- 29
Removal and installation of aftercooler assembly................................................................ 50- 35
Removal and installation of fuel cooler and air condenser assembly ..................................
50- 37
Removal and installation of fan motor assembly ................................................................. 50- 39
Removal and installation of fuel tank assembly ................................................................... 50- 44
Engine ..................................................................................................................................... 50- 46
Removal and installation of fuel supply pump assembly .....................................................
50- 46
Removal and installation of cylinder head assembly ...........................................................
50- 51
00-8
