New Holland MHCity MH Plus MH5.6 Tier III Excavator REPAIR MANUAL – PDF DOWNLOAD

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New Holland MH City MH Plus MH5.6 Tier III Excavator REPAIR MANUAL – PDF DOWNLOAD

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New Holland MH City MH Plus MH5.6 Tier III Excavator REPAIR MANUAL – PDF DOWNLOAD

SAFETY INSTRUCTION

This warning symbol points out important messages involving your safety. Carefully read the safety rules contained herein and follow advised precautions to avoid potential hazards and to safeguard your safety and personal integrity. In this manual you will find this symbol together with the following key-words

WARNING:This symbol warns about the possibility of potential damages to the machine that can involve the operator’s safety.

DANGER :With specific warnings about potential dangers for the operator’s or other persons integrity directly or indirectly involved

The non compliance with the warning preceded by the above mentioned key-words (WARNING and DANGER) can cause serious accidents or even the death of the persons involved. Moreover in the present Manual have been given some instructions with texts in italics, preceded by the words NOTE and CAUTION:

NOTE: it emphasizes and underlines to the operator the correct technique or correct procedure to follow. S

CAUTION It warns the operator of a possible hazard of machine damage in case he does not follow a determined procedure

1. GENERAL SAFETY INSTRUCTIONS

• Carefully read this Manual before proceeding with maintenance, repairs, refuelling or other machine operations. Repairs have to be carried out only by authorized and instructed staff; specific precautions have to be taken when grinding, welding or when using mallets or heavy hammers. Not authorized persons are not allowed to repair or carry out maintenance on this
• machine. Do not carry out any work on the equipment without prior authorization. Ask your employer about the safety instructions in force and safety equipment. Nobody is allowed to seat on the operator’s place during machine maintenance unless he is a qualified operator helping with the maintenance work. If it is necessary to move the equipment to carry out
• repairs or maintenance, do not lift or lower the equipment from any other position than the operator’s seat. Never carry out any operation on the machine when the engine is running, except when specifically indicated. Stop the engine and ensure that all pressure is relieved from hydraulic circuits before removing caps, covers, valves, etc. All repair and maintenance
• operations should be carried out with the greatest care and attention. Service stairs and platforms used in a workshop or in the field should be built in compliance with the safety rules in force. Any functional disorders, especially those affecting the safety of the machine, should therefore be rectified immediately.

TABLE OF CONTENTS:

New Holland MH City MH Plus MH5.6 Tier III Excavator REPAIR MANUAL – PDF DOWNLOAD

INDEX
SECTION 01 – SAFETY PRECAUTIONS
1 GENERAL SAFETY INSTRUCTIONS 2
2 USE INSTRUCTION 11
SECTION 02 – CONTROLS AND INSTRUMENTS
1 SWITCHES AND PUSH-BUTTONS 1
2 CONTROLS AND PEDALS 6
3 MULTI-FUNCTION DISPLAY 10
SECTION 03 – TECHNICAL SPECIFICATIONS
1 MAIN COMPONENTS 1
2 DIMENSIONS – OPERATING WEIGHTS 3
3 DIGGING PERFORMANCE 19
4 LIFTING CAPACITIES 33
5 HYDRAULIC SYSTEM 39
6 ROTATION 40
7 TRAVEL 41
8 TYRES 42
9 BRAKES 42
10 STEERING 42
11 ELECTRICAL SYSTEM 42
12 BUCKETS 43
13 TIGHTENING TORQUES 44
14 CENTRALIZED LUBRICATION PUMP (OPTIONAL) 44
15 FUEL SYSTEM 44
16 ENGINE 45
17 SUPPLY SUMMARIZING CHART 46
SECTION 04 – UPPER STRUCTURE
1 MAIN COMPONENTS 1
2 SLEWING BEARING 2
3 ROTATION GEARMOTOR 7
31 DISASSEMBLY AND ASSEMBLY 12
32 SPECIAL TOOLS 34
4 MULTI-COOLER 35
41 TECHNICAL SPECIFICATIONS 36
5 HYDRAULIC PUMPS 39
6 MUFFLER 40
7 HYDRAULIC OIL TANK 41
8 AIR FILTER 47
9 COUNTERWEIGHT 47
10 FUEL SYSTEM 48
11 CAB AND OPERATOR’S SEAT 55
12 CENTRALIZED LUBRICATION PUMP 66
SECTION 05 – UNDERCARRIAGE
1 UNDERCARRIAGE COMPONENTS 1
2 REAR RIGID AXLE 2
21 TECHNICAL SPECIFICATIONS 3
22 DISASSEMBLY AND ASSEMBLY 6
23 DISASSEMBLY AND ASSEMBLY 8
24 TROUBLESHOOTING 87
25 SPECIAL TOOLS 89
3 TRAVEL MOTOR 90
31 TECHNICAL SPECIFICATIONS 90
32 DISASSEMBLY AND ASSEMBLY 91
33 DISASSEMBLY AND ASSEMBLY 92
4 CARDAN SHAFT 103
41 DISASSEMBLY AND ASSEMBLY 104
5 FRONT STEERING AXLE 106
51 TECHNICAL SPECIFICATIONS 107
52 DISASSEMBLY AND ASSEMBLY 110
53 DISASSEMBLY AND ASSEMBLY 112
54 TROUBLESHOOTING 185
55 SPECIAL TOOLS 187
6 WHEELS AND TYRES 188
7 BLADE 192
71 BLADE CYLINDER 194
8 AXLE FLOATING LOCKING CYLINDERS 202
81 TECHNICAL SPECIFICATIONS 203
82 DISASSEMBLY AND ASSEMBLY 204
83 AIR BLEEDING 205
84 DISASSEMBLY AND ASSEMBLY 206
85 TROUBLESHOOTING 208
9 STABILIZERS 209
91 STABILIZER CYLINDERS 212
92 TROUBLESHOOTING 221
10 LEFT LADDER 223
11 RIGHT LADDER AND TOOL STORAGE BOX 224
12 ROTARY CONTROL VALVE AND ELECTRIC ROTOR 225
121 TECHNICAL SPECIFICATIONS 225
122 DISASSEMBLY AND ASSEMBLY 226
123 DISASSEMBLY AND ASSEMBLY 227
124 ELECTRIC ROTOR 229
SECTION 06 – FRONT ATTACHMENT
1 TYPES OF FRONT ATTACHMENT 2
2 HYDRAULIC CYLINDERS 4
21 BOOM CYLINDER 5
22 SPECIAL TOOLS 50
3 BUCKETS 51
4 QUICK COUPLER 55
5 CLAMSHELL BUCKET 59
SECTION 07 – STEERING SYSTEM
1 OPERATION 1
2 POWER STEERING 3
21 DISASSEMBLY AND ASSEMBLY 5
3 PRIORITY VALVE 23
4 TROUBLESHOOTING 24
SECTION 08 – BRAKE SYSTEM
1 OPERATION 1
2 SERVICE BRAKE 4
3 PARKING BRAKE 7
4 PEDAL BRAKE VALVE 8
5 ACCUMULATORS 9
6 TROUBLESHOOTING 11
SECTION 09 – HYDRAULIC SYSTEM
1 HYDRAULIC SYSTEM 1
2 HYDRAULIC SYSTEM DIAGRAMS 5
21 HYDRAULIC SYSTEM DIAGRAMS – UPPER STRUCTURE 5
22 HYDRAULIC SYSTEM DIAGRAMS – UNDERCARRIAGE 23
23 HYDRAULIC SYSTEM DIAGRAMS BLADE AND/OR STABILIZERS 27
3 HYDRAULIC PUMPS 31
4 UPPER STRUCTURE CONTROL VALVE 48
5 UNDERCARRIAGE CONTROL VALVE 58
6 PILOT CONTROL ASSY 60
7 ROTATION SYSTEM 69
8 TRAVEL 73
9 STABILIZATION HYDRAULIC SYSTEM 84
10 BOOM HYDRAULIC SYSTEM 90
11 HYDRAULIC SYSTEM 97
12 HYDRAULIC SYSTEM OF DIPPER 103
13 HYDRAULIC SYSTEM OF PLACING BOOM 107
14 HYDRAULIC SYSTEM WITH COMBINATION OF DIFFERENT FUNCTIONS
(BOOM, PLACING BOOM, DIPPER AND BUCKET)114
15 HYDRAULIC SYSTEM OF HAMMER (WITH PLACING BOOM) 116
16 HYDRAULIC SYSTEM OF HAMMER AND SHEARS (WITH PLACING BOOM) 119
17 HYDRAULIC SYSTEM OF SHEARS (WITH PLACING BOOM) 124
18 HYDRAULIC SYSTEM OF HAMMER (WITH MONOBOOM) 127
19 HYDRAULIC SYSTEM OF HAMMER AND SHEARS (WITH MONOBOOM) 130
20 HYDRAULIC SYSTEM OF SHEARS (WITH MONOBOOM) 135
21 TROUBLESHOOTING 138
SECTION 10 – ELECTRICAL SYSTEM
1 ELECTRICAL DIAGRAMS 1
2 FUSES 41
3 BATTERIES 44
4 BULBS 48
5 TROUBLESHOOTING 52
SECTION 11 – ELECTRONICS
1 MAIN COMPONENTS 1
11 ELECTRICAL POWER SUPPLY DIAGRAM 3
2 COMPONENTS OF LINE 1 5
3 COMPONENTS OF LINE 2 9
31 TRAVEL PEDAL 15
32 ATTACHMENT PEDAL (PLACING BOOM AND HAMMER) 16
33 ELECTRO-HYDRAULIC SYSTEM 17
34 POWER CONTROL SYSTEM 18
4 ENGINE SPEED ACTUATOR 25
5 COOLANT TEMPERATURE DETECTION 26
6 CHARGE AIR TEMPERATURE DETECTION 27
7 HYDRAULIC OIL TEMPERATURE DETECTION 28
8 PROPORTIONAL VALVE – FAN MOTOR 29
9 PROPORTIONAL VALVES – CONTROL BLOCK 30
SECTION 12 – CALIBRATION
1 NECESSARY OPERATIONS BEFORE CALIBRATION 1
2 DISPLAY: CALIBRATION MENU 3
3 CALIBRATIONS WITH THE ENGINE RUNNING 4
31 VDO CALIBRATION 6
32 POWER CALIBRATION 8
33 MAIN VALVE CALIBRATION (CONTROL VALVE) 10
34 TRAVEL CALIBRATION 13
35 PUMP DELIVERY CALIBRATION 15
36 ROTATION PUMP CALIBRATION 18
37 AUXILIARY PRESSURE CALIBRATION 20
4 CALIBRATIONS WITH THE ENGINE STOPPED 22
41 CALIBRATIONS, ALL SOLENOID VALVES, MAIN PUMP, ROTATION PUMP,
AUXILIARY PRESSURE24
42 MAIN VALVE CALIBRATION (CONTROL VALVE) 26
5 DISTRIBUTORE 26
6 VALVOLA SOSTENIMENTO DEL CARICO 29
7 DIAGNOSI INCONVENIENTI 30

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