Repair Manual For New Holland MH6.6 MH8.6 Hydraulic Excavator. Illustrations, instructions, diagrams for step by step remove and install, assembly and disassembly, service, inspection, repair, troubleshooting, tune-up.
Format: PDF
Language: English
Pages: 638
Bookmarks: Yes
Searchable: Yes
Number: 60413562
Wiring Diagrams: Yes
Hydraulic Diagrams: Yes
Model
New Holland MH6.6, MH8.6
Contents
- — Safety Instructions
Personal Safety Instructions
Observe The Safety Instructions
Protection From Noise
Preparing For Emergencies
Wearing Protective Clothing
Safety Instructions Before Starting Work
Checking The Machine
Keeping The Working Area Clean
Using Grab Handles And Steps
Adjusting The Operator’S Seat
Applying The Safety Belt
Working From The Operator’S Seat Only
Never Take Passengers On The Machine
Safety Instructions For Machine Operation
Before Setting Off
Note The Position Of The Working Equipment
Taking Care During Operation
Taking Care When Trenching
Distance From Overhead Power Lines
Accident Prevention When Reversing And Slewing
Rules For Driving On The Road
Recovering And Towing The Machine
Travelling Uphill And Downhill
Preventing The Machine From Overturning
Inspecting The Deployment Location
Parking The Machine Safely
Preventing Accidents When The Machine Is Moving
Confirming The Direction Of Machine Travel
Avoid Caving Out High Banks
Protection From Rockfall And Landslides
Caving Prevention
Never Move The Bucket Above Persons
Safety Instructions, Maintenance/Servicing
Safety During Transport
Safety During Servicing Operations
Warning Instructions For Servicing Work
Correct Machine Support
Working At Greater Heights
Keeping Clear Of Moving Parts
Prestressed Units
Never Remove Lead Seals
Safety Instructions For Accumulators
Dismantling Components
After Repair Work
Correct Waste Disposal
Welding Operations
Starting The Engine With Starter Batteries
Prevention Of AcidInduced Burns
Prevention Of Scalding
Safe Handling Of Fluids
Fire Prevention
Evacuation In Case Of Fire
Risks From Exhaust Gases
Risks From Fluids In Pressure Systems
Preventing Heat BuildUp Close To Pressure Systems
Preventing Heat BuildUp In Lines Carrying Combustible Fluids
Removing Paint Before Welding
Risks From BreakingAway Components
Use Appropriate Tools
Warning And Instruction Signs
Signs
Positioning Of Signs
Organizational Measures
Selection And Qualification Of Personnel; Basic Responsibilities
Safety Instructions Governing Specific Operational Phases
Warning Of Special Dangers - — Technical Data And Special Tools
Service Data General
Foreword
Data Sheet
BucketInduced Protrusion
Si And Additional Units
Quantities Of Space And Mass
Time Related Quantities
Quantities Of Force, Energy And Power
Conversions Tables Part
Conversion For Units Of Length
Conversion For Units Of Area
Conversion From Foot And Inch To Metric Mesures
Conversion From Newton-meter (Nm) Into Foot Pounds (Ft Lb)
Conversions Tables
Conversion Table For Units Of Pressure In Gases, Steam And Fluids
Conversion Table For Units Of Power, Energy And Heat Quantity
Conversion Table For Units Of Mechanical Stress
Practically Equivalent Units For Pressure And Mechanical Stress (Strength)
Units Of Temperature And Conversion Formulars
Power, Energy And Heat Flow
Speed
Units Of Mass (Weight)
Units Of Volume, Flow Rates
Fuel Consumption
Calculation Examples
Angles Of Slope
Travel Speed
Hydraulic Outputs (Pumps/Motors)
Stroking Times Of Cylinders
Speeds Of Hydraulic Motors
Tightening Torques
General Information
Units Of Measurement
Bolts With Standard Thread
Bolts With Metric Fine Thread
Tightening Torques For Sae Flange – System
Tightening Angles
Special Tools For Cylinders
Screwed Hex Insert For Piston Nut
Sealing Kit – Assembly
Scraper Ring – Assembly
Bushes Dismantling
Rod Guide Assembly
Piston Nut Loosening And Tightening
Special Tools For Axles And Gearboxes
Axial Stress Meter
Bearing Friction Moment Adjusting Device
Driving Tool For Bushing
Assembly Aid For Shaft Seals
Master Shaft
Extraction Device
Driving Tool
Assembly Aid
Brake Centering Device
Tool Handle
Hydraulic Pump
Measuring Device
Threaded Studs
Driving Tool For Shaft Seals
Spacers - — Machine Structure
Machine Construction
Description Of The Machine (BoomAdjusting Equipment)
Machine Layout
Undercarriage
Superstructure
Hydraulic System
Steering
Service Brake
Parking Brake
Floating Axle
Electrical System
Working Equipment
Description Of The Machine (MonoblockBoom Equipment)
Machine Layout
Undercarriage
Superstructure
Hydraulic System
Steering
Service Brake
Parking Brake
Floating Axle
Electrical System
Working Equipment
Switches / Keys
Control Elements / Iso
Multifunction Display
Superstructure Components, Overview
Engine Assembly Components, Overview
Hydraulic System Components, Overview
Drive Unit Components, Overview
Undercarriage Components, Overview - — Electrical System
Control
Introduction
The Electrical System
Fundamental Notions
Automotive Electrical Systems
Cable Harnesses
Fuses
Checking / Replacing The Fuses
Table Of Fuses
Electrical Circuit Diagrams
Electrical Circuit Diagrams
Power Supply / Engine Starter
Grid Heater / Filter Heater
Power Supply For Sensors
Tank Sensor / Refuelling System
PilotControl Shutoff
Pcs
Switches
Speed Adjusting Motor
Horn / Cu Power Supply
Driver’s Cab / Voltage Converter
Driver’s Cab / Wiper And Washer
Steering Column Lever Switch
Lighting
Speedometer – Creep Speed
Valves / Air Filter Control
Gear / FloatingAxle / Brake
Blower And Air Conditioner
Auxiliary Heating (Option)
Hammer / Shears / Frequency (Option)
Stabilization / Levelling Blade
Esx Power Supply
Esx: Can, Can, Diagnostics
Esx Coding
Esx Valve Control
Esx Pcs Valve Control
Esx Valve Stacking
Esx Valve Control
Esx Slewing Initiator
Esx Pressure Sensors
Power Supply / Can Bus, Overview
Fuses, Overview
Grounding Points, Overview
Electrical Circuit Diagrams For Supplementary Functions
Electrical Circuit Diagram,
Layout Of Electrical Components
Electrical System – Central Electronics (Behind Driver’s Seat)
Electrical System For ElectroHydraulic Pilot Control
Electrical System Of Pilot ControlUnit, Solenoid Valves, Sensors And Switches
Electrical System In Engine Compartment
Electrical System For Undercarriage Control Block
Electrical System For Undercarriage Stabilization
Electrical Components By Code Numbers
Connector Pin Assignment Tables - — Electronics
Electronic Control Unit
Introduction
Esx Controller
Central Electronic System / Central Unit
Pcs
Can Bus (Digital Technique)
Electronic Control Diagram
Can Bus Wiring
Power Supply
Electrical Circuit Diagram CanBus Power Supply
Power Supply And Can Bus In Acc
Description
Grounding
Components At Can Bus
Central Electronics
Description
MultiFunction Display
Description
KeyBoard Modules
Description
Pcs, Power Control System With LoadLimit Regulator
Description
Diagnosis Socket
Description
Esx Controller
Description
Esx Power Supply
Pin Assignment Esx Controller
Components At Can Bus
Right Joystick A For Boom And Bucket Cylinder
Right Joystick, Description
Left Joystick For Stick Cylinder And Slewing Mechanism
Left Joystick, Description
Joystick Characteristics
Left Joystick
Right Joystick
Description
Functioning Principle Of Joysticks And Pedals
Description
Driving Pedal (Master)
Characteristic
Double Pedal (Slave) For Adjusting Cylinder Or Hammer/Shears
Description
Esx Coding
Schematic
Description
Esx Coding
Pcs: Power Control System
Function Chart And Component Layout Plan
Function Listing, Description
Fundamental Principle Of Pump Control
Description
Regulating Circuit
Speed Characteristics Of The Engine Under Load
Detection Of The Load Status
Regulating Process
Pcs When Driving On The Public Highway
Pcs Performance Diagram
Pcs
Pcs Components
LoadLimit Regulator
Speed Actuator
Decription
Speed Sensing
Description
Speed Sensor (Pickup) B
Coolant Temperature Sensing
Description
Temperature Sensor
ChargeAir Temperature Sensing
Description
Hydraulic Oil Temperature Sensing
Description
Temperature Sensor
Proportional Valve
Description
AV With Measuring Point For Control Pressure
Description
Fan Control With Proportioanl Valve
Hammer / Shears Control With Boom Adjusting Equipment
Description
Electrical Circuit Diagram, Hammer / Shears Equipment
Speed Actuator - — Hydraulics
Hydraulic System
Overview
Working, Slewing And PilotControl Circuits
In The Superstructure
Schematic Diagram
Oil Flow Through Control Block
Description
Working, Travel And PilotControl Circuits
In The Undercarriage
Schematic Diagram
Description
Hydraulic Circuit Diagrams
Undercarriage
Drive Unit
Circuit Diagram
Description
MultiCircuit Pump Unit
Description
Variable Displacement Twin Pump
Description
Drive Unit, Variable Displacement Twin Pump – Output Regulator
Output Regulation By LoadSensing Pressure
Output Regulation By Pump High Pressure
Output Regulation By LoadLimit Control
PilotControl Pump
Description
Double Gear Pump
Description
Hydraulic Reservoir With Attachments
Description
Control Block
Rear View
Front View
Bottom View
Control Block Neutral Circuit
Description
Spool Control Block With Hammer / Further Option
Neutral Circuit
Description
Control Block Valves
Primary PressureLimiting Valves With Pressure Sequence Stage
Tank Channel – Preloading Valves
Secondary PressureLimiting Valves With Replenishing Stage (Sv)
Proportional Valves For Control Spool Adjustment
Pressure Sensors
PilotControl System
Schematic Diagram
Description
Pilot Control Unit
Schematic Diagram
Solenoid Valves And Their Functions
Proportional Valve Y Of The LoadLimit Regulator
Solenoids Y And Y
Solenoid Valve
Travel Circuit
Schematic Diagram
Description
Travel Control Spool
Hydraulic And Electric Rotor
Hydraulic Rotor, Description
Electric Rotor, Description
Travel Drive
Description
Travel Oil Motor Type
Technical Data
Travel Oil Motor, Regulator
Travel Oil Motor, Travel Brake Valve
Undercarriage Solenoid Valves
Description
Steered Axle
Description
FloatingAxle Cylinder
Description - — Calibration
Before Undertaking Calibration Work
Generalities
Measures To Be Taken On Main Pump AV
Adjustment Of The Setscrews And Currents
Measures To Be Taken On Slewing Pump AV
Setting Of Mechanical Zero Position
Display, Service, Calibration
General Information
Display, Service, Calibration (Engine On)
Setting Of Calibration Parameters
Calibration (Engine On), Aux Press
Display, Service, Calibration (Engine Off)
Setting Of Calibration Parameters
Calibration - — Troubleshooting
Fault Codes
General Information On Fault Codes
Fault Codes
Fault Codes Pcs Unit - — Repair Instructions
Welding Operations
General Welding Instructions
Protecting Electronic Modules During Welding Operations
Effect Of Electromagnetic Fields And Electrostatic Discharges
Handling Of Oils And Greases
Securing The Machine
Depressurizing The Hydraulic System / Brake System
Depressurizing The Hydraulic System
Bearings And Bushings
Removal Of Bearings And Bushings
Fitting Of Bearings And Bushings
Superstructure Components
Replacing The Buffers Under The Cab Baseplate
Preparations
Front Buffers
Rear Buffers
Removing And Refitting The Cab
Preparations
Separation Of Water Pump
Unplugging The Electrical Connectors
Dismantling The Cab
Refitting The Cab
Driver’s Seat
Preparations
Removing The Driver’s Seat
Installing The Driver’s Seat
Steering Column, Steering Valve
Preparations
Removing The Steering Column With The Steering Valve
Refitting The Steering Column And The Steering Valve
Removing The Steering Column
Refitting The Steering Column
Control Levers
Preparations
Replacing The Control Lever
Display
Preparations
Removing The Display Unit
Refitting The Display Unit
Esx Box
Preparations
Removing The Esx Box
Refitting The Esx Box
LoadLimit Regulator
Preparations
Removing The LoadLimit Regulator
Refitting The LoadLimit Regulator
Fan Door
Preparations
Removing The Fan Door
Refitting The Fan Door
Combined Radiator
Preparations
Removing The Combined Radiator
Refitting The Combined Radiator
Battery Box
Preparations
Battery Box, Removing The Hood
Battery Box, Refitting The Hood
Removing And Installing The Battery
Battery Box Panelling
Removing The Metal Panel
Refitting The Metal Panel
Link Between Superstructure And Undercarriage
Components
Rotor
Preparations
Removing The Rotor
Refitting The Rotor
Slewing Gearbox
Preparations
Removing The Slewing Gearbox
Slewing Gearbox, Fitting
Dismantling And Assembling The Slewing Gearbox
BallBearing Slewing Ring
Preparations
Removing The BallBearing Slewing Ring
Fitting The BallBearing Slewing Ring
Undercarriage Components
Axles And Gearboxes
Instructions For The Repair Of Gearboxes And Axles
Testing Procedures
Service Brake
Brake Disks, Checking The Lining Thickness
Bleeding The MultipleDisk Brake
Cardan Shaft
Removing The Cardan Shaft
Refitting The Cardan Shaft
Rigid Axle
Removing The Rigid Axle
Asp Tightening Torques
Refitting The Rigid Axle
Rigid Axle, Hydraulic Motor And Flanges
Removal And Fitting Of Hydraulic Motor And Flanges
Rigid Axle, Gearbox Housing
Removing And Fitting The Gearbox Housing
Ridid Axle, Differential Unit
Removing And Fitting The Differential Unit
Rigid Axle, Pinion Unit
Removing And Fitting The Pinion Group
Steered Axle
Removing The Steered Axle
Tightening Torques Alpp
Refitting The Steered Axle
Steered Axle, Steering Cylinder
Removal And Fitting Of The Steering Cylinder
Steered Axle, Reducer Gear
Removal And Fitting Of The Reducer Gear
Steered Axle, Articulated Joint Housing
Removal And Fitting Of The Articulated Joint Housing
Steered Axle, Differential Unit
Removal And Fitting Of The Differential Unit
Steered Axle, Pinion Group
Removal And Fitting Of The Pinion Group
FloatingAxle Cylinder
Removing The Cylinders
Replacing The Rod Seal
Repairing The Check Valve
Recommissioning And Bleeding
Speed Sensor
Tyres And Wheels
Tyres And Wheels, Safety Instructions
Tyre Pressure, Checking And Topping Up
Tyre Inflation Pressure – Table
Fastening Of Wheels
Wheels
Changing A Wheel
Steps, Left Side
Preparation
Removing The Steps On The Left Side
Installing The Steps On The Left Side
Steps, Right Side, ToolBox
Preparation
Removing The Steps On The Right Side
Fitting The Steps On The Right Side
Dismantling The ToolBox
Stabilizers
Safety Instructions
Outriggers
Levelling Blade
Outriggers
Preparations
Removing The Outriggers
Refitting The Outriggers
Levelling Blade
Preparations
Removing The Levelling Blade
Refitting The Levelling Blade
Outrigger Cylinders
Outrigger Cylinder Components
Preparations
Removing The Outrigger Cylinders
Refitting The Outrigger Cylinders
Outrigger Cylinders, Tightening Torques
Levelling Blade Cylinders
Levelling Blade Cylinder Components
Preparations
Removing The Levelling Blade Cylinders
Refitting The Levelling Blade Cylinders
Levelling Blade Cylinders, Tightening Torques
Equipment, Components
Boom Cylinders For Monoblock Boom Equipment
Preparations
Boom Cylinders For Boom Adjusting Equipment
Preparations
Boom Cylinders
Removing The Boom Cylinders
Refitting The Boom Cylinders
Boom Cylinder, Components
Dismantling The Boom Cylinder
Tightening Torques
Assembling The Boom Cylinder
Stick Cylinder
Preparations
Removing The Stick Cylinder
Refitting The Stick Cylinder
Stick Cylinder, Components
Dismantling The Stick Cylinder
Tightening Torques
Assembling The Stick Cylinder
Bucket Cylinder
Preparations
Removing The Bucket Cylinder
Refitting The Bucket Cylinder
Bucket Cylinder, Components
Dismantling The Bucket Cylinder
Tightening Torques
Assembling The Bucket Cylinder
Adjusting Cylinder
Preparations
Removing The Adjusting Cylinder
Refitting The Adjusting Cylinder
Boom Adjusting Cylinder, Components
Dismantling The Boom Adjusting Cylinder
Tightening Torques
Assembling The Boom Adjusting Cylinder
Wear Parts
SlipOn Tooth
Safety Instructions
Replacing The SlipOn Teeth
Trenching Grab, Wear Limits
Reworking The Stops
Fuses
Checking And Replacing The Fuses
Location Of Fuses And Modules In The Cab And In The Engine Compartment
Fuses, Table
Lamp Bulbs
Replacing The Lamp Bulbs, Instructions
Bulb Table
Replacing The Headlamp Bulb
Replacing The Lamp Bulb In The Front Direction Indicator Lamp
Replacing The Lamp Bulb Of The Cab Interior Lamp
Replacing The Lamp Bulb Of The TailLight
Replacing The Lamp Bulb Of The Cab Floodlamp
Replacing The Lamp Bulb Of The Boom Floodlamp
Engine
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