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Bobcat 418 Excavator Service Manual (SN AB4711000-AB4799999)

Format: PDF (Printable Document)

File Language: English

File Pages: 626

File Size: 27.88 MB (Speed Download Link)

Brand: Bobcat

Model: 418 Excavator

Book No: 6986853

Serial No: SN AB4711000-AB4799999

Type of Document: Service Manual

Categories: ,

$ 45

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Bobcat 418 Excavator Service Manual (SN AB4711000-AB4799999)

The 418 is a tiny excavator, but it still has the same problems as the big ones: hoses pop, tracks quit pulling, swing motors leak, and wiring gets weird after a few seasons. This service manual is what you reach for when you're past guessing and you need the factory way to tear into something and put it back together over a weekend. It's aimed at people who actually turn wrenches, not just drive the machine. If your serial number falls in the range, this is the book you use to keep that little 418 earning its keep.

What this manual helps you do

  • Diagnose hydraulic issues, trace oil flow, and check pressures when the boom, arm, or blade is weak or jerky
  • Follow step-by-step teardown and reassembly on components like cylinders, drive motors, swing gear, and pumps
  • Troubleshoot no-start or intermittent electrical problems using wiring diagrams and test procedures
  • Replace and adjust wear parts, seals, and linkages so the machine digs straight and the controls feel right
  • Set and verify key adjustments after repairs so the excavator tracks, swings, and digs the way it should

Who this is for

This is for a 418 owner-operator, small contractor, farm or rental outfit that wants to do real repairs on a Bobcat 418 with serial numbers AB4711000 through AB4799999. If you just want to know what the buttons do or basic maintenance intervals, you want the operator's handbook instead, not this manual.

FAQ

Q: Is this a searchable PDF, and can I read the wiring diagrams clearly?

A: Yes, these manuals are usually searchable PDFs and the wiring diagrams are laid out so you can zoom in and read pin numbers and wire colors.

Q: How do I know if it covers my exact 418?

A: Check your serial plate. If your 418 serial number falls between AB4711000 and AB4799999, this is the right service manual series.

Q: Is this the right document if I'm rebuilding or diagnosing, not just changing oil?

A: Yes, this is the workshop-level service manual, meant for real diagnostics, teardown, and repair work.

If your 418's serial number is in that AB4711000-AB4799999 range, then yes, this is the manual you want. If it isn't, then no, you should look for the book that matches your serial range instead.

📘 Show Index

Table of Contents:

  • 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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