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SEN00701-19
H-25 Bucket does not tilt back ................................................................................................. 35
H-26 Bucket speed is low or tilting back force is insufficient ................................................... 36
H-27 Bucket comes to operate slowly in the midst of tilting-back............................................ 37
H-28 Bucket cylinder cannot hold down the bucket................................................................. 37
H-29 Hydraulic drifts of bucket occur often .............................................................................. 37
H-30 Bucket wobbles during travel with cargo (Work equipment valve is set to "HOLD") ....... 37
H-31 During operation of machine, engine speed lowers remarkably or engine stalls ............ 38
H-32 Large shocks are made when work equipment starts and stops .................................... 38
H-33 When work equipment circuit is relieved singly, other work equipment moves .............. 38
H-34 ECSS does not operate, and pitching and bouncing occur ............................................ 39
Troubleshooting of engine (S-mode)
Method of using troubleshooting chart.....................................................................................
S-1 Engine does not start easily. .............................................................................................
S-2 Engine does not start ........................................................................................................
S-3 Engine does not pick up smoothly .................................................................................... 12
S-4 Engine stops during operation .......................................................................................... 13
S-5 Engine does not rotate smoothly (Engine hunts.) ............................................................. 14
S-6 Engine lacks output (or lacks power) ................................................................................ 15
S-7 Exhaust smoke is black (Incomplete combustion) ............................................................ 16
S-8 Oil is consumed much (or exhaust gas color is blue)........................................................ 18
S-9 Engine oil becomes contaminated quickly ........................................................................ 19
S-10 Fuel consumption is excessive ....................................................................................... 20
S-11 Coolant contains oil (blows back or reduces) .................................................................. 21
S-12 Oil pressure drops........................................................................................................... 22
S-13 Oil level rises (Water, fuel in oil) ...................................................................................... 23
S-14 Coolant temperature rises too high (Overheating) .......................................................... 25
S-15 Abnormal noise is made.................................................................................................. 26
S-16 Vibration is excessive...................................................................................................... 27
50 Disassembly and assembly
General information on disassembly and assembly
How to read this manual ..........................................................................................................
Coating materials list ...............................................................................................................
Special tool list .........................................................................................................................
Sketches of special tools ......................................................................................................... 11
Engine and cooling system, Part 1
Removal and installation of engine assembly..........................................................................
Removal and installation of radiator assembly ........................................................................
Removal and installation of air aftercooler...............................................................................
Removal and installation of cooling fan and fan motor assembly............................................ 10
Removal and installation of radiator guard and cooling fan motor assembly .......................... 12
Removal and installation of fuel tank assembly ....................................................................... 15
Removal and installation of hood............................................................................................. 17
Engine and cooling system, Part 2
Removal and installation of fuel supply pump assembly .........................................................
Removal and installation of cylinder head assembly ...............................................................
Removal and installation of fuel injector assembly .................................................................. 17
Removal and installation of engine front seal .......................................................................... 20
Removal and installation of engine rear seal........................................................................... 24
Power train, Part 1
Removal and installation of torque converter and transmission assembly ..............................
Disconnection and connection of power train unit ...................................................................
Disassembly and assembly of input transfer assembly ........................................................... 12
Disassembly and assembly of torque converter assembly (Lockup specification) .................. 19
Disassembly and assembly of torque converter assembly (Lockup-less specification) .......... 32
14
00 Index and foreword
SEN00742-03
3
6
8
SEN02022-03
2
4
7
SEN02023-03
2
7
9
SEN02024-04
2
6
SEN02025-04
2
8
WA500-6
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