New Holland Excavator MH4 6 MHPlusC Workshop SERVICE Manual 60413482 – PDF DOWNLOAD

Description

New Holland Excavator MH4 6 MHPlusC Workshop SERVICE Manual

FILE DETAILS:

New Holland Excavator MH4 6 MHPlusC Workshop SERVICE Manual

Size: 118 MB
Format: PDF
Language: English
Number of Pages: 972 pages
Brand: New Holland

DESCRIPTION:

New Holland Excavator MH4 6 MHPlusC Workshop SERVICE Manual

SAMPLE PAGE FROM THE MANUAL:

• This service manual has been prepared in order to increase repair quality, providing to the technicians the elements for a good knowledge of the product and showing the proper procedures to carry out the maintenance operations. We recommend to thoroughly read the content and follow it when necessary. It is a concise guide. It covers construction features, operation principle, troubleshooting, disassembly and assembly of components and repair action.
• Using this manual in systematic and rational way it is possible to reduce the repairing errors and delay that could cause machine stop with a detriment of cost management. The information quoted in this service manual are supplied also to be used for training aids. Therefore it is advisable to be used in the training of new personnel that will be employed in the machine maintenance. All the information, illustrations and specifications contained in this service manual are based on the latest product information available at the time of publication. The dealer reserves the right to makes changes at any time without notice to this service manual for technical or trading reasons.
• Read the Operation and Maintenance Instruction Manual carefully before starting, operating, maintaining, fuelling or servicing the machine. Carefully read the explanation to each and all safety signs in the special section of this Manual before starting, operating, maintaining, fuelling or servicing the machine. Machine-mounted safety plates are colour coded yellow with black borders when they refer to points where special must be paid and failure to observe them may cause a serious DANGER to the integrity of machine operators. They are white with red borders and black lettering when they refer to a FORBIDDEN practice.
• It is fundamental that all machine operators know very well the meaning of each safety plate as this considerably decreases operating hazards and accidents. Do not allow unauthorised personnel to operate or service this machine. Do not wear rings, wrist watches, jewellery, loose or hanging garments, such as ties, torn clothing, scarves, unbuttoned or unzipped jackets that can get caught in moving parts. Wear certified safety clothes such as: hard hat, no-slip footwear, heavy gloves, ear protection, safety glasses , reflector vests, respirators every time the job requires it.
• Ask your employer about safety regulations in force and protective equipment. Always keep the operator’s compartment, step plates, grab-rails and handles clean and clear of foreign objects, oil, grease, mud or snow to minimise the danger of slipping or stumbling. Remove mud or grease from your shoes before operating the machine. Do not jump on or off the machine. Always keep both hands and one foot, or both feet and one hand in contact with steps and/or grab rails. Do not use controls or hoses as hand holds. Hoses and controls are movable parts and do not provide solid support. Besides, controls may be inadvertently moved and cause unexpected movement of the machine or its attachments.
• Never operate the machine or its attachments from any position other than sitting in the driver’s seat. Keep head, body, limbs, hands and feet inside the operator’s compartment at all times to reduce exposure to external hazards. Be careful of possible slippery conditions of the steps and hand rails as well as of the ground around the machine. Wear protective boots or shoes with the soles made of highly no-slip rubber.
• Do not leave the machine until it has come to a complete stop. Always check height, width and weight limitations which may be encountered in the working site and ensure the machine does not exceed them. Assess exact paths of gas ducts, water mains, telephone lines, sewers, overhead and underground electric lines and all other possible obstacles. Such paths should be opportunely defined by competent Authorities. If necessary, require that the service is interrupted or said installations are moved prior to starting the work. You must know the working capacity of the machine.
• Define the rear upperstructure swing area and provide for opportune barriers to prevent access into it. Never exceed machine lifting capacity. Remain within the limits shown in the loading capacity chart located on the machine. STARTING Never start or operate a failed machine. Walk all around the machine before mounting. Before operating the machine, make sure that any possible dangerous condition has been properly removed. Before starting machine, check that steering and attachment controls are in the neutral position and the safety lever is in the LOCK position.
• Immediately report any malfunction of parts or systems to the maintenance managers for proper action. Prior to starting the engine, check, adjust and lock the driver’s seat for maximum riding comfort and control accessibility. Prior to operating the machine and/or its attachments, check that bystanders are outside the machine operating range. Sound the horn. Obey all hand signals, safety indications and signs. Due to the presence of flammable fluids, never check fuel level, refuel, charge the batteries or use the starting fluid in the presence of smoking materials, open flames or sparks.
• Ensure that nobody is within the excavator operating area before starting the machine, swinging the upper structure or moving in any direction. Adjust all rear-view mirrors for maximum visibility of the area behind the machine. Ensure that engine speed is appropriate to the job to be carried out. If any hydraulic control or system exhibits erratic performance or responds abnormally, have the machine checked for air in the system. Air in these circuits may cause incorrect movements with consequent accident hazard. Refer to the Operation and Maintenance Instruction Manual about corrective action to be taken.

NEW HOLLAND EXCAVATOR MH4 6 MHPLUSC WORKSHOP SERVICE MANUAL 60413482 – PDF DOWNLOAD:

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

New Holland Excavator MH4 6 MHPlusC Workshop SERVICE Manual

SECTION 1 – HOW TO USE
Sections index 1-1
Introduction 1-3
Features of the manual 1-5
SECTION 2 – SAFETY RULES
Safety rules 2-1
Safety signs 2-35
SECTION 3 – FEATURES
Foreword 3-1
Identification data 3-2
Noise levels (2000/14/EEC) 3-3
Summary plate for maintenance operations 3-5
Basic components of the wheeled excavator with monobloc 3-6
Basic components of the wheeled excavator with triple articulation 3-7
Reading key for the liftable load chart located in the cab 3-31
Filling chart model MH4 6 3-32
Filling chart model MHPlusC 3-33
SECTION 4 – SUPERSTRUCTURE
Superstructure 4-1
Main frame and counterweight 4-6
Power unit 4-11
Hydraulic pumps 4-18
Hydraulic oil reservoir 4-63
Fuel reservoir 4-65
Covers and protections 4-67
Cab 4-71
Main control valve 4-83
Swing device 4-116
Hand pilot valve 4-149
Travel pilot valve 4-154
Steering valve 4-156
Center joint 4-178
Specifications and data 4-180
Brake pedal valve 4-181
Accumulators 4-196
Pressure switches 4-199
Solenoid valves 4-202
SECTION 5 – UNDERCARRIAGE
Swing bearing 5-3
Lower frame 5-7
Travel unit 5-8
Wheels and tyres 5-349
Blade assembly 5-362
Lateral stabilizers 5-363
SECTIONS INDEX PAGES
1-2
SECTIONS INDEX
SECTION 6 – FRONT-END ATTACHMENT
Monobloc front-end attachment 6-1
Triple articulation front-end attachment 6-8
Cylinder removal and installation 6-15
Cylinders 6-39
Cylinders 6-67
Antidrop valves 6-96
Pins and bushings 6-98
Pins and bushings 6-100
Nominal dimensions for the connection between the arm and the bucket 6-102
SECTION 7 – HYDRAULIC SYSTEM
Hoses and connections 7-1
Hydraulic system 7-8
Operation of circuits 7-48
SECTION 8 – ELECTRICAL SYSTEM
Safety rules 8-1
Specifications and data 8-2
Location and functions of components 8-4
Instruments and controls 8-9
APC50 electronic unit 8-30
Electric components 8-37
Control line and wiring harnesses 8-42
SECTION 9 – TROUBLESHOOTING
Introduction 9-1
Hydraulic system troubleshooting 9-3
Electrical system troubleshooting 9-33
SECTION 10 – PERFORMANCE TEST
Introduction 10-1
Standard performances 10-2
Preparation for performance test 10-10
Excavator peformance test 10-12
Lift/swing performance 10-20
Transmission 10-25
Component performance test

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