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Bobcat 335 Excavator Service Manual (SN A9KA11001-A9KA99999)

Format: PDF (Printable Document)

File Language: English

File Pages: 952

File Size: 26.92 MB (Speed Download Link)

Brand: Bobcat

Model: 335 Excavator

Book No: 6986949

Serial No: SN A9KA11001-A9KA99999

Type of Document: Service Manual

Categories: ,

$ 45

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Bobcat 335 Excavator Service Manual (SN A9KA11001-A9KA99999)

On a 335 mini excavator, this is the book you grab when the boom drifts, a drive motor gets weak, or you've got an electrical ghost and downtime is killing you. Around my shop, the service manual is what comes out when I'm past simple filters and grease and I need actual specs and step-by-step teardown. If you're trying to keep an older 335 earning instead of sitting on the trailer, this is the kind of manual you want.

What this manual helps you do

  • Diagnose hydraulic issues, check pressures, and trace leaks on the 335's working and travel circuits
  • Follow step sequences to remove, tear down, and reinstall cylinders, drive motors, and swing components
  • Troubleshoot electrical problems using wiring diagrams, connector callouts, and test procedures
  • Rebuild and set up major assemblies on the upperstructure and undercarriage so things go back together right
  • Verify adjustments after a repair, from control response to machine functions, so you're not guessing

Who this is for

This manual is for owners or techs working on a Bobcat 335 excavator with serial numbers in the A9KA11001 to A9KA99999 range. If you just need operating instructions or daily checks, you want the operator's handbook instead, not this shop manual.

FAQ

Q: Is this a searchable PDF and are the wiring diagrams readable?

A: Yes, these are normally clear, zoomable PDFs, and the wiring diagrams are laid out to be readable on a screen or printed.

Q: How do I know it fits my exact machine?

A: Check your serial plate. If your 335 starts with A9KA and falls between A9KA11001 and A9KA99999, this is the right manual.

Q: Is this the right thing if I'm only changing fluids and filters?

A: Probably overkill. This is a repair manual for diagnostics and component work, not basic maintenance.

Bottom line, if your 335's serial is in that A9KA range and you're doing your own real repairs, this is the manual you're looking for.

📘 Show Index

Table of Contents:

  • ALPHABETICAL INDEX
  • CONTENTS
    • FOREWORD
    • SAFETY INSTRUCTIONS
    • FIRE PREVENTION
      • Maintenance
      • Operation
      • Electrical
      • Hydraulic System
      • Fueling
      • Starting
      • Spark Arrestor Exhaust System
      • Welding And Grinding
      • Fire Extinguishers
    • SERIAL NUMBER LOCATIONS
      • Excavator Serial Number
      • Engine Serial Number
    • DELIVERY REPORT
    • EXCAVATOR IDENTIFICATION
  • SAFETY AND MAINTENANCE
    • LIFTING AND BLOCKING THE EXCAVATOR
      • Procedure
    • UPPERSTRUCTURE SLEW LOCK
      • Operation
    • LIFTING THE EXCAVATOR
      • Procedure
    • OPERATOR CAB (ROPS / TOPS)
      • Description
      • Cab Door
      • Front Window
      • Front Wiper
      • Window Washer Reservoir
      • Right Side Window
      • Heating, Ventilation And Air Conditioning Duct
      • Heating, Ventilation And Air Conditioning Duct (Cont’d)
    • TRANSPORTING THE EXCAVATOR ON A TRAILER
      • Loading And Unloading
      • Fastening
    • TAILGATE
      • Opening And Closing
      • Adjusting The Bumper
      • Adjusting The Latch
    • RIGHT SIDE COVER
      • Opening And Closing
      • Adjusting The Bumper
      • Adjusting The Latch
    • SERVICE SCHEDULE
      • Chart
    • AIR CLEANER SERVICE
      • Daily Check
      • Replacing Filter Elements
    • HEATER AIR FILTER (WITH CAB OPTION ONLY)
      • Removal And Installation
    • ENGINE COOLING SYSTEM
      • Cleaning
      • Checking Level
      • Removing And Replacing Coolant
    • FUEL SYSTEM
      • Fuel Specifications
      • Biodiesel Blend Fuel
      • Fuel Filter
      • 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 Fluid
      • Removing And Replacing Hydraulic Filter
      • Removing And Replacing Hydraulic Case Drain Filter
      • Removing And Replacing Hydraulic Fluid
    • LUBRICATING THE EXCAVATOR
      • Lubrication Locations
    • TRAVEL MOTOR
      • Checking And Adding Oil
      • Removing And Replacing Oil
    • SPARK ARRESTOR MUFFLER
      • Cleaning Procedure
    • ACCESSORY DRIVE BELT
      • Belt Adjustment
      • Belt Replacement
    • SEAT BELT
      • Inspection And Maintenance
    • PIVOT PINS
      • Inspection And Maintenance
    • EXCAVATOR STORAGE AND RETURN TO SERVICE
      • Storage
      • Return To Service
    • STOPPING THE ENGINE AND LEAVING THE EXCAVATOR
      • Procedure
      • Emergency Exits
    • MOTION ALARM SYSTEM (IF EQUIPPED)
      • Description
      • Inspecting
      • Adjusting Switch Position
  • HYDRAULIC SYSTEM
    • HYDRAULIC / HYDROSTATIC SCHEMATICS
    • HYDRAULIC SYSTEM INFORMATION
      • Glossary Of Hydraulic/Hydrostatic Symbols For Excavators
      • Troubleshooting The Hydraulic Circuit
      • Troubleshooting The Cylinder Circuit
      • Troubleshooting The Swing (Upperstructure Slew) Circuit
      • Troubleshooting The Travel Circuit
    • BOOM CYLINDER
      • Testing
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • ARM CYLINDER
      • Testing
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • BOOM SWING CYLINDER
      • Testing
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • BUCKET CYLINDER
      • Testing
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • BLADE CYLINDER
      • Testing
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • CLAMP CYLINDER
      • Testing
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • ANGLE BLADE CYLINDER
      • Testing
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • MAIN RELIEF VALVE
      • Testing And Adjusting The Main Relief Valve
    • PORT RELIEF VALVES
      • Testing And Adjusting The Port Relief Valve Pressure
    • CROSSPORT RELIEF VALVES
      • Testing And Adjusting The Crossport Relief Valve
    • PRESSURE REDUCING VALVE
      • Testing And Adjusting The Pressure Reducing Valve
    • HYDRAULIC CONTROL VALVE
      • Description
      • Removal And Installation
      • Identification Chart
      • Disassembly
      • Right Travel Valve Section Disassembly And Assembly
      • Left Travel Valve Section Disassembly And Assembly
      • Slew Valve Section Disassembly And Assembly
      • Blade Valve Section Disassembly And Assembly
      • Bucket Valve Section Disassembly And Assembly
      • Arm Valve Section Disassembly And Assembly
      • Boom Valve Section Disassembly And Assembly
      • Boom Swing Valve Section Disassembly And Assembly
      • Auxiliary Valve Section Disassembly And Assembly
      • Inlet Section Disassembly And Assembly
      • Assembly
    • HYDRAULIC PUMP
      • Piston Pump Work Sheet
      • Description
      • Testing The Piston Pump
      • Test Fitting Installation
      • Torque Limiter Adjustment
      • Testing Auxiliary Hydraulic Flow
      • Removal And Installation
      • Coupler Removal And Installation
      • Hydraulic Pump Start Up
      • Parts Identification (Torque Limiter Valve)
      • Torque Limiter Valve Removal
      • Torque Limiter Valve Disassembly
      • Torque Limiter Valve Assembly
      • Initial Torque Limiter Valve Setting
      • Torque Limiter Valve Installation
      • Parts Identification (Pump Control)
      • Pump Control Removal And Installation
      • Pump Control Disassembly And Assembly
      • Parts Identification (Piston Pump)
      • Piston Pump Disassembly
      • Piston Pump Assembly
    • MANIFOLD ASSEMBLY/ ACCUMULATOR
      • Description
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • TRAVEL MOTOR
      • Description
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • SWIVEL JOINT
      • Description
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • SWING MOTOR
      • Description
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • SWING MOTOR DRIVE CARRIER
      • Description
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • CONTROL PATTERN SELECTOR VALVE
      • Description
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • RIGHT CONTROL LEVER (JOYSTICK)
      • Description
      • Testing
      • Handle Removal And Installation
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • LEFT CONTROL LEVER (JOYSTICK)
      • Description
      • Testing
      • Handle Removal And Installation
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • HYDRAULIC FILTER
      • Description
      • Housing Removal And Installation
    • CASE DRAIN FILTER
      • Description
      • Housing Removal And Installation
    • HYDRAULIC RESERVOIR
      • Description
      • Removal And Installation
    • OIL COOLER
      • Description
      • Removal And Installation
    • DIRECT TO TANK VALVE
      • Description
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • HYDRAULIC X-CHANGE VALVE
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • BOOM SWING LOCK VALVE
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • TRAVEL CONTROL VALVE
      • Removal and Installation
      • Parts Identification
      • Disassembly And Assembly
    • ANGLE BLADE VALVE
      • Description
      • Testing And Adjusting Port Relief Valves
      • Testing And Adjusting Sequence Valve
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • SLEW LOCK VALVE
      • Description
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
  • UNDERCARRIAGE
    • BLADE
      • Description
      • Blade Removal And Installation
    • ANGLE BLADE ASSEMBLY
      • Removal And Installation
    • ANGLE BLADE
      • Removal And Installation
    • ANGLE BLADE CUTTING EDGE
      • Removal And Installation
    • TRACK FRAME COMPONENTS
      • Description
      • Track Lug Height
      • Checking Tension
      • Adjusting Tension
      • Rubber Track Removal And Installation
      • Steel Track Removal And Installation
      • Idler (Front) Removal And Installation
      • Idler (Front) Parts Identification
      • Idler (Front) Disassembly
      • Idler (Front) Assembly
      • Recoil Spring Assembly And Cylinder Removal And Installation
      • Recoil Spring Assembly And Cylinder Disassembly And Assembly (S/N A9KA11100 & Below And AAD114409 & Below)
      • Recoil Spring Cylinder Parts Identification (S/N A9KA11101 & Above And AAD114410 & Above)
      • Recoil Spring Assembly And Cylinder Disassembly And Assembly (S/N A9KA11101 & Above And AAD114410 & Above)
      • Roller Removal And Installation
      • Upper Roller Parts Identification
      • Upper Roller Disassembly
      • Upper Roller Assembly
      • Lower Roller Parts Identification
      • Lower Roller Disassembly
      • Lower Roller Assembly
      • Track Guide Removal And Installation
      • Sprocket Removal And Installation
      • Track Damage Identification
    • SWING CIRCLE GEAR
      • Removal
      • Installation
  • UPPERSTRUCTURE & SWING SECTION
    • UPPERSTRUCTURE
      • Description
      • Removal
      • Installation
    • CANOPY
      • Removal And Installation
    • CAB
      • Removal And Installation
      • Door Removal And Installation
      • Front Window Removal And Installation
      • Right Side Rear Sliding Window Removal And Installation
      • Right Side Front Sliding Window Removal And Installation
      • Glass Removal
      • Right Side Front And Rear Sliding Window Weather Strip Removal And Installation
      • Right Side Front And Rear Sliding Window Wiper Strip Removal And Installation
      • Glass Installation
    • SEAT AND SEAT MOUNT
      • Seat Mount Removal And Installation
      • Seat Removal And Installation
    • RIGHT CONSOLE
      • Description
      • Console Cover Removal And Installation
      • Console Frame Removal And Installation
      • Console Frame Disassembly And Assembly
    • LEFT CONSOLE
      • Description
      • Joystick Console Cover (Bottom) Removal And Installation
      • Joystick Console Cover (Top) Removal And Installation
      • Left Rear Console Cover Removal And Installation
      • Compression Spring Removal And Installation
      • Compression Spring Disassembly And Assembly
      • Lever Removal And Installation
      • Joystick Console Frame Removal And Installation
      • Joystick Console Frame Disassembly And Assembly
      • Left Console Frame Removal And Installation
    • BLADE CONTROL
      • Removal And Installation
      • Linkage Removal And Installation
      • Linkage Disassembly And Assembly
    • UPPERSTRUCTURE SLEW LOCK
      • Removal And Installation
      • Disassembly And Assembly
    • FLOOR MAT & FLOOR PANEL
      • Description
      • Removal And Installation (Canopy Equipped)
      • Removal And Installation (Cab Equipped)
    • BOOM SWING PEDAL
      • Description
      • Removal And Installation
      • Disassembly And Assembly
      • Linkage Removal And Installation
    • TRAVEL LEVER/PEDALS
      • Description
      • Removal And Installation
      • Disassembly And Assembly
      • Adjustment
      • Linkage Removal And Installation
    • FUEL TANK
      • Removal And Installation
    • HORN
      • Removal And Installation
    • SWING FRAME
      • Description
      • Removal And Installation
      • Hose Routing
      • Bushing Removal And Installation
      • Swing Frame Bushing Removal And Installation
    • BOOM
      • Description
      • Removal And Installation
      • Boom Bushing Removal And Installation
    • ARM
      • Description
      • Removal And Installation
      • Arm To Boom Bushing Removal And Installation
      • Arm To Bucket & Bucket Link Bushing Removal And Installation
    • BUCKET
      • Removal And Installation (Pin-On X-Change)
      • Removal And Installation (Bolt-On X-Change)
      • Removal And Installation (Hydraulic X-Change)
      • Bucket Teeth Removal And Installation
      • Bucket Side Cutting Edge Removal And Installation
    • TAILGATE
      • Removal And Installation
      • Latch Removal And Installation
    • X-CHANGE
      • Pin-On Removal And Installation
      • Pin-On Disassembly And Assembly
    • X-CHANGE (HYDRAULIC)
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • RIGHT SIDE COVER
      • Removal And Installation
      • Latch Removal And Installation
  • ELECTRICAL SYSTEM AND ANALYSIS
    • ELECTRICAL SCHEMATICS
    • ELECTRICAL SYSTEM INFORMATION
      • Glossary Of Electrical Symbols
      • Harness Connectors
      • Troubleshooting
      • Description
      • Fuse And Relay Locations/Identification
    • BATTERY
      • Removal And Installation
      • Servicing
      • Using A Booster Battery (Jump Starting)
    • ALTERNATOR
      • Belt Adjustment
      • Charging System Inspection
      • Alternator Voltage Testing
      • Low Voltage Testing
      • High Voltage Testing
      • Removal And Installation
      • Parts Identification
    • STARTER
      • Testing
      • Removal And Installation
      • Part Identification
    • LIGHTS
      • Upperstructure Light Removal And Installation
      • Upperstructure Light Disassembly And Assembly
      • Boom Light Removal And Installation
      • Boom Light Bulb Replacement
    • MAGNETIC LOCKOUT SENSOR
      • Testing Left Console Magnetic Lockout Sensor
      • Left Console Magnetic Lockout Sensor Removal And Installation
    • FUEL LEVEL SENDER
      • Removal And Installation
      • Testing
    • DIAGNOSTIC SERVICE CODES
      • Description
      • Service Codes List
    • DELUXE INSTRUMENT PANEL SETUP
      • Passwords
      • Password Entry (For Starting and Operating the Machine)
      • Changing The Owner Or Operator Password
      • Password Lockout Feature
      • Job Clock
      • RPM
  • ENGINE SERVICE
    • ENGINE INFORMATION
      • Description
      • Specifications
      • Fuel Injection Nozzles
      • Fuel Injection Pump
      • Cylinder Head
      • Valves
      • Valve Springs
      • Valve Timing
      • Rocker Arms
      • Camshaft
      • Tappet
      • Cylinders
      • Piston Rings
      • Pistons
      • Connecting Rods
      • Oil Pump
      • Crankshaft
      • Timing Gear
      • Thermostat
      • Engine Bolt Torque
      • Crankshaft Re-Grind Data
      • Torque Values
      • Troubleshooting
      • Engine Removal And Installation
      • Engine Mount Replacement
      • Compression – Checking
    • ENGINE SPEED CONTROL
      • Removal And Installation
      • Adjustment
    • SPARK ARRESTOR 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 Housing Removal And Installation
      • Testing The Thermostat
    • LUBRICATION SYSTEM
      • Oil Pan Removal And Installation
      • Oil Pump Removal And Installation
      • Oil Pump Inspection
      • Engine Oil Pressure – Testing
    • FUEL SYSTEM
      • Fuel Camshaft Removal And Installation
      • Fuel Camshaft Governor Disassembly And Assembly
      • Fuel ShutOff Solenoid – Checking
      • Fuel Shutoff Solenoid Removal And Installation
      • Fuel Injection Pump Removal And Installation
      • Injection Pump – Timing
      • Fuel Injector Removal And Installation
      • Fuel Injector Nozzle Pressure – Checking
      • Nozzle Spray Condition
      • Valve Seat Tightness
    • CYLINDER HEAD
      • Glow Plug – Testing
      • 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
      • Reconditioning The Valve And Valve Seat
      • 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 Backlash – Checking
      • Idler Gear And Shaft Removal And Installation
      • Camshaft – Servicing
      • Idler Gear And Shaft – Servicing
    • FLYWHEEL AND HOUSING
      • Flywheel Housing Removal And Installation
      • Hydraulic Pump Coupler Removal And Installation
      • Flywheel Removal And Installation
      • Flywheel Ring Gear
    • FAN
      • Removal And Installation
  • HEATING, VENTILATION, AIR CONDITIONING
    • HEATER COIL
      • Removal And Installation With A/C
      • Removal And Installation Without A/C
    • BLOWER FAN
      • Removal And Installation
      • Disassembly And Assembly
      • Resistor Removal And Installation
    • HEATER VALVE
      • Removal And Installation
    • AIR CONDITIONING SYSTEM FLOW
      • Principals
      • Chart
    • COMPONENTS
      • Identification
    • SAFETY
      • Safety Equipment
    • REGULAR MAINTENANCE
      • Heater Air Filter
      • Engine Accessory Drive Belt
      • Cleaning The Condenser
    • BASIC TROUBLESHOOTING
      • Poor A/C Performance
      • Cleaning The A/C Evaporator Coil & Heater Coil
      • Engine Accessory Drive Belt
      • Electrical System
      • Engine Coolant By-Passing The Heater Valve
      • Heater Valve Not Opening Or Closing
    • GENERAL AIR CONDITIONING SERVICE GUIDELINES
      • Compressor Oil
      • Compressor Oil Check
      • Component Replacement And Refrigeration Leaks
    • SYSTEM TROUBLESHOOTING CHART
      • Blower Motor Does Not Operate
      • Gauge Pressure Related Troubleshooting
    • TEMPERATURE/PRESSURE
      • Chart
    • AIR CONDITIONING SERVICE
      • Chart
    • SYSTEM CHARGING AND RECLAMATION
      • Reclamation Procedure
      • Charging With A Manifold Gauge Set
    • COMPRESSOR
      • Removal And Installation
      • Clutch Disassembly And Assembly
    • CONDENSER
      • Removal And Installation
    • RECEIVER/DRIER
      • Receiver/Drier Removal And Installation
    • PRESSURE RELIEF VALVE
      • Removal And Installation
    • PRESSURE SWITCH
      • Removal And Installation
    • EVAPORATOR / HEATER UNIT
      • Removal And Installation
      • Disassembly And Assembly
    • THERMOSTAT
      • Removal And Installation
    • EXPANSION VALVE
      • Removal And Installation
    • EVAPORATOR
      • Removal And Installation
  • SPECIFICATIONS
    • 335 Excavator SPECIFICATIONS
      • Dimensions
      • Excavator With Optional Angle Blade Dimensions
      • Performance
      • Controls
      • Engine
      • Hydraulic System
      • Hydraulic Cylinders
      • Hydraulic Cycle Times
      • Electrical
      • Drive System
      • Slew System
      • Undercarriage
      • Capacities
      • Tracks
      • Ground Pressure
    • ENGINE SPECIFICATIONS
      • Fuel Injection Nozzles
      • Fuel Injection Pump
      • Cylinder Head
      • Valves
      • Valve Springs
      • Valve Timing
      • Rocker Arms
      • Camshaft
      • Tappet
      • Cylinders
      • Piston Rings
      • Pistons
      • Connecting Rods
      • Oil Pump
      • Crankshaft
      • Timing Gear
      • Thermostat
      • Engine Bolt Torque
      • Crankshaft Re-Grind Data
    • TORQUE SPECIFICATIONS
      • 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
    • FUEL, COOLANT AND LUBRICANTS
      • Chart
    • CONVERSIONS
      • Decimal And Millimeter Equivalents
      • U.S. To Metric Conversion Chart
  • SERVICE MANUAL REVISION
    • Revision No: 335 – 1
    • Revision No: 335 – 2
    • Revision No: 335 – 3

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