Bobcat 418 Compact Excavator 6986853 (05-18) (Preview)
MAINTENANCE SAFETY
CONTENTS
FOREWORD
FOREWORD
SAFETY INSTRUCTIONS
FIRE PREVENTION
Maintenance
Operation
Electrical
Hydraulic System
Fueling
Starting
Spark Arrester Exhaust System
Welding And Grinding
Fire Extinguishers
SERIAL NUMBER LOCATIONS
Excavator Serial Number
Engine Serial Number
DELIVERY REPORT
BOBCAT EXCAVATOR IDENTIFICATION
SAFETY AND MAINTENANCE
LIFTING AND BLOCKING THE EXCAVATOR
Procedure
UPPERSTRUCTURE SLEW LOCK
Operation
LIFTING THE EXCAVATOR
Procedure
TRANSPORTING THE EXCAVATOR ON A TRAILER
Loading And Unloading
Fastening
FOLD-DOWN TOPS
TOPS Position
Lowering The Fold-Down TOPS
Raising The Fold-Down TOPS
TAILGATE
Opening And Closing
SERVICE SCHEDULE
Chart
AIR CLEANER SERVICE
Daily Check
Replacing The Filter Elements
ENGINE COOLING SYSTEM
Cleaning
Checking Level
Removing And Replacing The Coolant
FUEL SYSTEM
Fuel Specifications
Biodiesel Blend Fuel
Filling The Fuel Tank
Fuel Filters
Draining The Fuel Tank
Removing Air From The Fuel System
ENGINE LUBRICATION SYSTEM
Checking And Adding Engine Oil
Engine Oil Chart
Removing And Replacing Oil And Filter
HYDRAULIC SYSTEM
Checking And Adding Hydraulic Oil
Hydraulic / Hydrostatic Fluid Chart
Removing And Replacing Hydraulic Filter
Removing And Replacing Hydraulic Fluid
LUBRICATING THE EXCAVATOR
Lubrication Locations
TRAVEL MOTOR
Checking And Adding Oil
Removing And Replacing Oil
SPARK ARRESTER MUFFLER
Cleaning Procedure
ALTERNATOR BELT
Belt Adjustment
Belt Replacement
SEAT BELT
Inspection And Maintenance
CONTROL CONSOLE LOCKOUT
Inspection And Maintenance
EXCAVATOR STORAGE AND RETURN TO SERVICE
Storage
Return To Service
STOPPING THE ENGINE AND LEAVING THE EXCAVATOR
Procedure
MOTION ALARM
Description
Inspecting
Adjusting Switch Position
REMOTE START TOOL KIT – MEL1563
Remote Start Tool – MEL1563
Service Tool Harness Communicator – MEL1566
REMOTE START TOOL (SERVICE TOOL) KIT – 7003031
Description
Remote Start Tool (Service Tool) – 7003030
Excavator Service Tool Harness – 6689747
Computer Service Tool Harness – 6689746
HYDRAULIC SYSTEM
HYDRAULIC / HYDROSTATIC SCHEMATICS
HYDRAULIC SYSTEM INFORMATION
Glossary Of Hydraulic / Hydrostatic Symbols
Troubleshooting The Hydraulic Circuit
Troubleshooting The Cylinder Circuit
Troubleshooting The Swing (Upperstructure Slew) Circuit
Troubleshooting The Travel Circuit
CYLINDER (BOOM)
Testing
Removal And Installation
Parts Identification
Disassembly
Assembly
CYLINDER (ARM)
Testing
Removal And Installation
Parts Identification
Disassembly
Assembly
CYLINDER (BOOM SWING)
Testing
Removal And Installation
Parts Identification
Disassembly
Assembly
CYLINDER (BUCKET)
Testing
Removal And Installation
Parts Identification
Disassembly
Assembly
CYLINDER (BLADE)
Testing
Removal And Installation
Parts Identification
Disassembly
Assembly
CYLINDER (TRACK FRAME EXPANSION)
Testing
Removal And Installation
Parts Identification
Disassembly
Assembly
VALVE (MAIN RELIEF)
Testing And Adjusting
VALVES (PORT RELIEF)
Testing And Adjusting
VALVE (PRESSURE REDUCING)
Testing And Adjusting
HYDRAULIC CONTROL VALVE
Description
Removal And Installation
Parts Identification
Disassembly
Left Travel Valve Section Disassembly And Assembly
Slew Valve Section Disassembly And Assembly
Arm Valve Section Disassembly And Assembly
Boom Swing Valve Section Disassembly And Assembly
Auxiliary Valve Section Disassembly And Assembly
Blade Valve Section Disassembly And Assembly
Bucket Valve Section Disassembly And Assembly
Boom Valve Section Disassembly And Assembly
Right Travel Valve Section Disassembly And Assembly
Assembly
HYDRAULIC PUMP
Description
Testing The Hydraulic Pump
Removal And Installation
Parts Identification
Disassembly
Assembly
MANIFOLD ASSEMBLY / ACCUMULATOR
Description
Removal And Installation
Parts Identification
Disassembly
Assembly
TRAVEL MOTOR
Description
Removal And Installation
Parts Identification
Disassembly
Assembly
SWIVEL JOINT
Description
Removal And Installation
Parts Identification (AB4711001 to AB4711897)
Parts Identification (AB4711898 & Above, B39211001 & Above)
Disassembly
Assembly
SWING MOTOR
Description
Removal And Installation
Parts Identification
Disassembly
Assembly
CONTROL PATTERN SELECTOR VALVE
Description
Removal And Installation
Disassembly And Assembly
CONTROL LEVER (JOYSTICK) (RIGHT)
Description
Testing
Handle Removal And Installation
Removal And Installation
Parts Identification
Disassembly
Assembly
CONTROL LEVER (JOYSTICK) (LEFT)
Description
Testing
Handle Removal And Installation
Removal And Installation
Parts Identification
Disassembly
Assembly
HYDRAULIC RESERVOIR
Description
Removal And Installation
OIL COOLER
Description
Removal And Installation
BLADE / TRACK EXPAND VALVE
Description
Block Removal And Installation
Control Handle Removal And Installation
Block Disassembly And Assembly
ELECTRIC BLADE / TRACK EXPANSION VALVE
Description
Valve Removal And Installation
Valve Disassembly And Assembly
BUILD-UP VALVE
Description
Removal And Installation
Disassembly And Assembly
TWO-SPEED CONTROL VALVE
Description
Block Removal And Installation
Solenoid Removal And Installation
Block Disassembly And Assembly
UNDERCARRIAGE
BLADE
Description
Extension Removal And Installation
Blade Removal And Installation
TRACK UNDERCARRIAGE COMPONENTS
Description
Track Lug Height
Checking Tension
Adjusting Tension
Track Removal And Installation
Idler Removal And Installation
Idler Parts Identification
Idler Disassembly
Idler Assembly
Track Tensioner Removal And Installation
Track Tensioner Disassembly And Assembly
Roller Removal And Installation
Removal And Installation Of Expandable Track Frame
TRACK MAINTENANCE
Track Damage Identification
SWING CIRCLE GEAR
Removal And Installation
UPPERSTRUCTURE AND SWING SECTION
UPPERSTRUCTURE
Description
Removal
Installation
TOPS
Removal And Installation
SEAT
Removal And Installation
RIGHT CONSOLE
Joystick Console Cover Removal And Installation
Gas Spring Removal And Installation
Compression Spring Removal And Installation
Lever Removal And Installation
Joystick Console Frame Removal And Installation
Joystick Console Frame Disassembly And Assembly
LEFT CONSOLE
Joystick Console Cover Removal And Installation
Gas Spring Removal And Installation
Compression Spring Removal And Installation
Lever Removal And Installation
Joystick Console Frame Removal And Installation
Joystick Console Frame Disassembly And Assembly
ENGINE SPEED CONTROL
Removal And Installation
Cable Removal
Cable Installation
BLADE CONTROL
Removal And Installation
Disassembly And Assembly
Two-Speed Switch Removal And Installation
SWING LOCK
Removal And Installation
Disassembly And Assembly
RIGHT PEDAL AND LINKAGE
Right Pedal Removal And Installation
Linkage Removal And Installation
Linkage Disassembly And Assembly
TRAVEL CONTROLS
Right Hand Travel Control Removal And Installation
Right Hand Travel Control Disassembly And Assembly
Left Hand Travel Control Removal And Installation
Left Hand Travel Control Disassembly And Assembly
LEFT PEDAL AND LINKAGE
Pedal Removal And Installation
Linkage Removal And Installation
Linkage Disassembly And Assembly
FLOOR PANELS
Description
Left Floor Panel Removal And Installation
Right Floor Panel Removal And Installation
FUEL TANK
Removal And Installation
HORN
Removal And Installation
SWING FRAME
Description
Removal And Installation
Bushing Removal
Bushing Installation
Boom Pivot Bushing Removal
Boom Pivot Bushing Installation
BOOM
Description
Removal And Installation
ARM
Description
Removal And Installation
Arm To Boom Bushing Removal And Installation
Arm To Bucket And Bucket Link Bushing Removal And Installation
BUCKET
Removal And Installation
TAILGATE
Removal And Installation
Latch Removal And Installation
COUNTER WEIGHTS
Rear Counter Weight Removal And Installation
Left Side Counter Weight Removal And Installation
Right Side Counter Weight Removal And Installation
SIDE COVERS
Upper Left Side Cover Removal And Installation
Upper Right Side Cover Removal And Installation
Lower Left Side Cover Removal And Installation
Lower Right Side Cover Removal And Installation
INSTRUMENT PANEL
Removal And Installation
Disassembly And Assembly
QUICK COUPLER (KLAC™ SYSTEM)
Troubleshooting
Daily Inspection
Removal And Installation
Parts Identification
Disassembly
Assembly
QUICK COUPLER (LEHNHOFF® SYSTEM)
Troubleshooting
Daily Inspection
Removal (MS03 And MS08)
Installation (MS03 And MS08)
Parts Identification (MS03)
Disassembly And Assembly (MS03)
Parts Identification (MS08)
Disassembly (MS08)
Assembly (MS08)
ELECTRICAL SYSTEM & ANALYSIS
ELECTRICAL SCHEMATICS
ELECTRICAL SYSTEM INFORMATION
Glossary Of Electrical Symbols
Troubleshooting
Description
Fuses
Relays And Diodes
BATTERY
Servicing
Removal And Installation
Using A Booster Battery (Jump Starting)
ALTERNATOR
Description
Tests
Alternator Output Test
Full Field Test
Alternator Regulator Test
Alternator Regulator Test With Voltmeter
Removal And Installation
Charging System Inspection
Parts Identification
STARTER
Removal And Installation
Parts Identification
Cleaning And Inspection
LIGHTS
Boom Light Removal And Installation
Light Bulb Removal And Installation
Light Switch Removal And Installation
MICROSWITCH
Testing Left Console Microswitch
Left Console Microswitch Removal And Installation
Testing Right Console Microswitch
Right Console Microswitch Removal And Installation
FUEL LEVEL SENDER
Removal And Installation
Testing
ENGINE SERVICE
ENGINE INFORMATION
Description
Specifications
Torque Values
Troubleshooting
Engine Removal And Installation
Engine Mount Replacement
Engine Compression – Checking
MUFFLER
Removal And Installation
AIR CLEANER
Removal And Installation
ENGINE COOLING SYSTEM
Radiator Removal And Installation
Water Pump Removal And Installation
Water Pump Disassembly And Assembly
Thermostat Removal And Installation
Thermostat – Checking
LUBRICATION SYSTEM
Oil Pan Removal And Installation
Oil Pump Removal And Installation
Oil Pump – Service
Engine Oil Pressure – Testing
Relief Valve
FUEL SYSTEM
Fuel Shutoff Solenoid Removal And Installation
Fuel Shutoff Timer Removal And Installation
Fuel Injection Pump – Checking
Fuel Injection Pump Removal And Installation
Fuel Injection Pump – Timing
Fuel Camshaft Removal And Installation
Fuel Camshaft Governor
Fuel Injector Removal And Installation
Fuel Injector Nozzle Pressure – Checking
Valve Seat Tightness
CYLINDER HEAD
Glow Plug Removal And Installation
Valve Clearance Adjustment
Valve Timing – Checking
Cylinder Head Removal And Installation
Cylinder Head Disassembly And Assembly
Cylinder Head – Servicing
Cylinder Head Top Clearance
Valve Guide – Checking
Valve And Valve Seat Reconditioning
Valve Spring
Valve Tappets
Rocker Arm And Shaft – Checking
CRANKSHAFT AND PISTONS
Piston And Connecting Rod Removal And Installation
Piston And Connecting Rod – Servicing
Cylinder Bore – Checking
Connecting Rod Alignment
Crankshaft And Bearings Removal And Installation
Crankshaft And Bearings – Servicing
CAMSHAFT AND TIMING GEARS
Timing Gearcase Cover Removal And Installation
Timing Gears Checking Backlash
Idler Gear And Camshaft Removal And Installation
Idler Gear And Shaft – Servicing
FLYWHEEL AND HOUSING
Removal And Installation
Hydraulic Pump Coupler Removal And Installation
Flywheel Removal And Installation
Rear End Plate Removal And Installation
SPECIFICATIONS
EXCAVATOR SPECIFICATIONS
Machine Dimensions
Performance
Controls
Engine (418 S/N AB4711001 & Above)
Engine (418 S/N B39211001 & Above)
Hydraulic System
Hydraulic Cylinders
Hydraulic Cycle Times
Electrical
Drive System
Swing System
Undercarriage
Capacities
Tracks
Ground Pressure
TECHNICAL SERVICE GUIDE SPECIFICATIONS
Engine
Engine Torques
Cooling System
Excavator Torques
Lubrication
TORQUE SPECIFICATIONS FOR BOLTS
Torque For General SAE Bolts
Torque For General Metric Bolts
HYDRAULIC CONNECTION SPECIFICATIONS
O-ring Face Seal Connection
Straight Thread O-ring Fitting
Tubelines And Hoses
Flare Fitting
Port Seal Fitting
HYDRAULIC FLUID SPECIFICATIONS
Specifications
CONVERSIONS
Decimal And Millimeter Equivalents
U.S. To Metric Conversion Chart
SERVICE TOOLS REQUIRED
Remote Start Tools
Hydraulic Tools
Engine Tools
Electrical Tools
HVAC Tools
ALPHABETICAL INDEX
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