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PC128US-8

00-3

00 Index and foreword

Table of contents

Center swivel joint .......................................................................................................................... 10-136
Solenoid valve ................................................................................................................................ 10-140
PPC accumulator ........................................................................................................................... 10-144
Holding valve.................................................................................................................................. 10-146

Work equipment................................................................................................................................. 10-152

Work equipment ............................................................................................................................. 10-152
Dimensions of components ............................................................................................................ 10-154
Hydraulic cylinder ........................................................................................................................... 10-158

Cab and its attachments .................................................................................................................... 10-160

Air conditioner ................................................................................................................................ 10-160

Electrical system ................................................................................................................................ 10-172

Electronic control system ............................................................................................................... 10-172
Monitor system ............................................................................................................................... 10-205
KOMTRAX system ......................................................................................................................... 10-219
Sensor ............................................................................................................................................ 10-221

20 Standard value table

Standard service value table..............................................................................................................

Standard value table for engine related parts ................................................................................

Standard value table for chassis related parts ...............................................................................

30 Testing and adjusting

Related information on testing and adjusting.....................................................................................

Tools for testing, adjusting, and troubleshooting............................................................................

Sketches of special tools................................................................................................................

Engine and cooling system ................................................................................................................

Testing engine speed .....................................................................................................................

Testing exhaust temperature..........................................................................................................

Checking exhaust gas color ...........................................................................................................

Adjusting valve clearance...............................................................................................................

Testing compression pressure .......................................................................................................

Testing blow-by pressure ...............................................................................................................

Testing engine oil pressure ............................................................................................................

Handling fuel system parts .............................................................................................................

Releasing residual pressure from fuel system ...............................................................................

Testing fuel pressure......................................................................................................................

Testing fuel return rate and fuel leakage........................................................................................

Bleeding air from fuel circuit ...........................................................................................................

Checking fuel circuit for leakage ....................................................................................................

Testing and adjusting alternator belt tension..................................................................................

Checking and adjusting air conditioner compressor belt tension ...................................................

Power train.........................................................................................................................................

Testing swing circle bearing clearance ..........................................................................................

Undercarriage and frame ...................................................................................................................

Checking and adjusting track shoe tension....................................................................................

Hydraulic system................................................................................................................................

Testing and adjusting oil pressure in work equipment, swing, and travel circuits ..........................

Testing control circuit basic pressure .............................................................................................

Testing and adjusting oil pressure in pump PC control circuit........................................................

Testing and adjusting oil pressure in pump LS control circuit ........................................................

Testing solenoid valve output pressure..........................................................................................

Testing PPC valve output pressure................................................................................................

Adjusting play of work equipment and swing PPC valves..............................................................

Checking parts which cause hydraulic drift of work equipment......................................................

Testing and adjusting travel deviation ............................................................................................

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Find manuals at https://best-manuals.com

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Содержание PC128US-8

Страница 1: ...WEN00003 00 HYDRAULIC EXCAVATOR PC128US 8 SERIAL NUMBERS 20001 and up a Arm crane cannot be used on this machine...

Страница 2: ...Find manuals at https best manuals com Find manuals at https best manuals com...

Страница 3: ...US 8 00 1 HYDRAULIC EXCAVATOR 1SHOP MANUAL PC128US 8 Machine model Serial number PC128US 8 20001 and up 00 Index and foreword 1 Find manuals at https best manuals com Find manuals at https best manual...

Страница 4: ...01 3 Specification dimension drawing 01 3 Working range diagram 01 4 Specifications 01 5 Weight table 01 8 Table of fuel coolant and lubricants 01 10 10 Structure function and maintenance standard En...

Страница 5: ...5 Testing engine oil pressure 30 16 Handling fuel system parts 30 17 Releasing residual pressure from fuel system 30 17 Testing fuel pressure 30 18 Testing fuel return rate and fuel leakage 30 19 Blee...

Страница 6: ...40 65 Failure code AB00KE Charge voltage low 40 66 Failure code B BAZG Eng oil press low 40 68 Failure code B BAZK Eng oil level low 40 68 Failure code B BCNS Eng coolant overheat 40 69 Failure code B...

Страница 7: ...mality 40 140 Failure code DA26KP 5V sensor 2 power abnormality 40 143 Failure code DA2RMC CAN discon Pump controller detected 40 144 Failure code DAF8KB Short circuit in camera power supply 40 146 Fa...

Страница 8: ...232 E 21 Travel alarm does not sound or does not stop sounding 40 234 E 22 Air conditioner does not operate normally including air conditioner abnormality record 40 235 E 23 While starting switch is...

Страница 9: ...ating materials list 50 6 Special tool list 50 9 Sketch of special tool 50 13 Engine and cooling system 50 15 Removal and installation of fuel supply pump assembly 50 15 Removal and installation of fu...

Страница 10: ...0 Removal and Installation of operator s cab door 50 152 Removal and installation of operator s cab glass stuck glass 50 155 Removal and installation of front window assembly 50 164 Removal and instal...

Страница 11: ...peration always wear safety shoes and helmet Do not wear loose work clothes or clothes with buttons missing q Always wear safety glasses when hit ting parts with a hammer q Always wear safety glasses...

Страница 12: ...e slings which have ample capacity and install them to proper places Operate the hoist or crane slowly to prevent the component from hitting any other part Do not work with any part still raised by th...

Страница 13: ...ide hanging angle from the hook When hoisting a load with 2 or more ropes the force subjected to each rope will increase with the hanging angle The table below shows the variation of allow able load i...

Страница 14: ...hile the slung load is swinging 6 Do not raise or lower a load while the crane is moving longitudinally or laterally 7 Do not drag a sling 8 When lifting up a load stop it just after it leaves the gro...

Страница 15: ...ts in your eyes or contacts your skin you may lose your sight and your skin may be frozen Accordingly put on safety glasses safety gloves and safety clothes when recover ing or adding the refrigerant...

Страница 16: ...h part The standard values and judgement criteria for testing and adjusting are explained in Testing and adjusting 40 Troubleshooting This section explains how to find out failed parts and how to repa...

Страница 17: ...re indicated with International System of units SI For reference con ventionally used Gravitational System of units is indicated in parentheses Symbol Item Remarks k Safety Special safety precautions...

Страница 18: ...ize set temporarily is called the standard size and the range of differ ence from the standard size is called the tolerance q The tolerance with the symbols of or is indicated on the right side of the...

Страница 19: ...he interference is in the standard range 4 Repair limit and allowable value or allow able dimension q The size of a part changes because of wear and deformation while it is used The limit of changed s...

Страница 20: ...wiring harnesses are more likely to be affected by the direct effects of rain water heat or vibration Furthermore during inspection and repair operations they are frequently removed and installed aga...

Страница 21: ...at the same time if water does enter it is difficult for it to be drained Therefore if water should get into the connector the pins will be short circuited by the water so if any water gets in immedia...

Страница 22: ...ec tors apart a Never pull with one hand 2 When removing from clips q Both of the connector and clip have stoppers which are engaged with each other when the connector is installed q When removing a c...

Страница 23: ...make it too hot as this will cause short circuits a If there is any damage or break age replace the connector 2 Fix the connector securely Align the position of the connector correctly and then inser...

Страница 24: ...nection Right of figure 1 Push in female connector 2 horizon tally until the lock clicks Arrow 1 2 Since locks a and b may not be set completely push in female connector 2 while moving it up and down...

Страница 25: ...s the risk that oil in the air may cause defective contact so remove all oil and water from the com pressed air before blowing with air 2 Dry the inside of the connector with a dryer If water gets ins...

Страница 26: ...lding on the body disconnect all wiring harness con nectors connected to the controller Fit an arc welding ground close to the welding point 5 Points to remember when troubleshooting electric circuits...

Страница 27: ...o use unit exchange Disassembly and maintenance of hydraulic equipment should be carried out in a specially prepared dustproof workshop and the perfor mance should be checked with special test equipme...

Страница 28: ...t will mix with the new oil and will shorten the life of the hydraulic oil 6 Flushing operations After disassembling and assembling the equip ment or changing the oil use flushing oil to remove the co...

Страница 29: ...using NE 95 170 12V140 engines Ambient pressure sensor PAMB 125 170 12V140 engines Disconnect connector 1 according to the fol lowing procedure 1 Slide lock L1 to the right 2 While pressing lock L2 pu...

Страница 30: ...ut connector 3 in the direction of the arrow q 114 engine q 107 engine a If the lock is on the underside use flat head screwdriver 1 since you cannot insert your fingers 2 While pressing up lock C of...

Страница 31: ...onnector straight up 4 Turn housing type Round green connector q 140 engine Example Intake air pressure sensor in intake mani fold CANNON 04 PIM etc 1 Disconnect connector 6 according to the following...

Страница 32: ...of 0 85 Indicates color of wire by color code Color codes are shown in Table 3 Indicates size of wire by nominal No Size Nominal No is shown in Table 2 Indicates type of wire by symbol Type symbol and...

Страница 33: ...08 3 30 5 23 d approx 1 0 1 2 1 5 1 9 1 9 2 3 2 4 3 0 Cov er D AVS Standard 2 0 2 2 2 5 2 9 2 9 3 5 3 6 AV Standard 4 6 AEX Standard 2 0 2 2 2 7 3 0 3 1 3 8 4 6 Nominal No 8 15 20 30 40 50 60 85 100 C...

Страница 34: ...Red LW Blue White BrW Brown White LY Blue Yellow BrY Brown Yellow O Orange Ch Charcoal P Pink Dg Dark green R Red G Green RB Red Black GB Green Black RG Red Green GL Green Blue RL Red Blue Gr Gray RW...

Страница 35: ...ents be sure to use lifting equipment of ample strength q When using forcing screws to remove any components tighten the forcing screws uniformly in turn q Before removing any unit clean the surroundi...

Страница 36: ...mes stopping the cylinder 100 mm from the end of its stroke 3 Next operate the hydraulic cylinder 3 4 times to the end of its stroke 4 After doing this run the engine at normal speed a When using the...

Страница 37: ...ck and damage If any part is damaged replace it 2 Check the mounting bolts and nuts of the muffler exhaust pipe and their mounting parts for looseness If any bolt or nut is loosened retighten it 5 Che...

Страница 38: ...joint 2 into mating adapter 3 Fig 1 a The adapter can be pushed in about 3 5 mm a Do not hold rubber cap portion 4 2 After hose joint 2 is pushed into adapter 3 press rubber cap portion 4 against adap...

Страница 39: ...s contact surface a of the hexag onal portion at the male end Fig 6 2 While holding the condition of Step 1 turn lever 8 to the right clockwise Fig 7 3 While holding the condition of Steps 1 and 2 pul...

Страница 40: ...l portion at the male end Fig 10 2 While holding the condition of Step 1 push cover 10 straight until it contacts contact surface b of the hexagonal por tion at the male end Fig 11 3 While holding the...

Страница 41: ...This as a preview PDF file from best manuals com Download full PDF manual at best manuals com...

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