On a real job, this E35z is digging footings, trenching for utilities, or working around houses where a full-size hoe won't fit. The people who reach for this service manual are the ones actually turning wrenches: field techs in a muddy driveway, shop mechanics rebuilding components, or owners trying to save a dealer trip. They want wiring diagrams that are readable, hydraulic specs in one place, and step-by-step teardown info so they only pull the machine apart once.
What this manual helps you do
- Diagnose hydraulic problems, check pressures, and trace which valve or cylinder is causing weak or jerky functions.
- Troubleshoot electrical faults using proper wiring diagrams, connector callouts, and logical test steps with a meter.
- Follow correct removal and installation steps for major components like drive motors, swing motor, boom/stick assemblies, and cylinders.
- Rebuild and adjust mechanical systems such as slew brake, track tension components, and work-group bushings and pins.
- Verify engine-related service work, from fuel system work to cooling and intake, so you button it up once and it starts right.
Who this is for
This is for anyone working on a Bobcat E35z excavator in the serial range B3Y411001 to B3Y499999: small contractors, field techs, shop mechanics, rental fleets, and owner-operators. If you only need to know how to run the machine or do daily checks, you want the operator's handbook instead, not this manual.
FAQ
Q: Is this a searchable PDF, and can I read the wiring diagrams on a laptop or tablet?
A: These manuals are usually provided as searchable PDFs, and in my experience the wiring diagrams are clear enough to zoom in on a screen in the truck.
Q: How do I know if it matches my machine?
A: Check your E35z serial plate. If it falls between B3Y411001 and B3Y499999, this is the correct service manual range.
Q: Is this the right thing if I'm just doing filters and basic service?
A: It may be overkill for simple fluid and filter changes, but it's the right document once you start chasing faults or removing major components.
Bottom line: If you own or service an E35z in that serial range and plan to do real diagnostics or teardown work, this is the manual you want.
📘 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
- EXCAVATOR IDENTIFICATION
- SAFETY AND MAINTENANCE
- LIFTING AND BLOCKING THE EXCAVATOR
- LIFTING THE EXCAVATOR
- OPERATOR CAB (ROPS / TOPS / FOPS)
- Description
- Cab Door
- Front Window
- Front Wiper
- Window Washer Reservoir
- Right Side Window
- OPERATOR CANOPY (ROPS / TOPS / FOPS)
- TRANSPORTING THE EXCAVATOR ON A TRAILER
- Loading And Unloading
- Fastening
- TAILGATE
- Opening And Closing
- Adjusting The Latch
- RIGHT SIDE COVER
- SERVICE SCHEDULE
- AIR CLEANER SERVICE
- Daily Check
- Replacing The Filter Elements
- CAB FILTERS
- ENGINE COOLING SYSTEM
- Cleaning
- Checking Level
- Removing And Replacing 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 Fluid
- Hydraulic / Hydrostatic Fluid Chart
- Removing And Replacing Hydraulic Filters
- Removing And Replacing Hydraulic Fluid
- LUBRICATING THE EXCAVATOR
- PIVOT PINS
- Inspection And Maintenance
- TRAVEL MOTOR
- Checking And Adding Oil
- Removing And Replacing Oil
- SPARK ARRESTER MUFFLER
- EMERGENCY EXIT
- Right Side Rear Window
- Front Window
- SEAT BELT
- Inspection And Maintenance
- CONTROL CONSOLE LOCKOUTS
- Inspection And Maintenance
- TOWING THE EXCAVATOR
- REMOTE START TOOL KIT – MEL1563
- Remote Start Tool Kit – MEL1563
- Service Tool Harness Control – MEL1565
- Service Tool Harness Communicator – MEL1566
- REMOTE START TOOL (SERVICE TOOL) KIT – 7217666
- Description
- Remote Start Tool (Service Tool) – 7022042
- 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 (Earlier Models)
- Disassembly (Earlier Models)
- Assembly
- Parts Identification (Later Models)
- Disassembly (Later Models)
- Assembly (Later Models)
- CYLINDER (BUCKET)
- Testing
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- CYLINDER (BLADE)
- Testing
- Removal And Installation
- Parts Identification (Earlier Models)
- Disassembly (Earlier Models)
- Assembly (Earlier Models)
- Parts Identification (Later Models)
- Disassembly (Later Models)
- Assembly (Later Models)
- CYLINDER (CLAMP)
- Testing
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- VALVE (MAIN RELIEF)
- VALVE (PORT RELIEF)
- Testing And Adjusting Port Relief Valve Pressure
- VALVE (CROSS PORT RELIEF)
- Testing
- Removal And Installation
- Disassembly And Assembly
- VALVE (PILOT PRESSURE RELIEF)
- Testing And Adjusting The Pilot Pressure Relief Valve
- HYDRAULIC CONTROL VALVE
- Description
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- Inlet Valve Section Disassembly And Assembly
- Boom Swing Valve Section Disassembly And Assembly
- Slew Valve Section Disassembly And Assembly
- Blade Valve Section Disassembly And Assembly
- Right And Left Travel Valve Section Disassembly And Assembly
- Boom Valve Section Disassembly And Assembly
- Auxiliary, Arm, Bucket And Angle Blade Valve Section Disassembly And Assembly
- Outlet Valve Section Disassembly And Assembly
- HYDRAULIC PUMP
- Hydraulic Pump Work Sheet
- Pump Testing
- Description
- Removal And Installation
- Coupler Removal And Installation
- Hydraulic Pump Startup
- Gear Pump Disassembly And Assembly
- Piston Pump Parts Identification
- Piston Pump Disassembly And Assembly
- MANIFOLD ASSEMBLY / ACCUMULATOR
- Description
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- TRAVEL MOTOR
- Description
- Removal And Installation
- Parts Identification Hydraulic Motor
- Parts Identification Gear Reduction Hub
- Disassembly
- Assembly
- SWIVEL JOINT
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- SWING MOTOR
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- SWING MOTOR (DRIVE CARRIER)
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- CONTROL PATTERN SELECTOR VALVE
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- RIGHT CONTROL LEVER (JOYSTICK)
- Testing
- Handle Removal And Installation
- Joystick Assembly Removal And Installation
- Parts Identification
- Disassembly And Assembly
- LEFT CONTROL LEVER (JOYSTICK)
- Testing
- Handle Removal And Installation
- Joystick Assembly Removal And Installation
- Parts Identification
- Disassembly And Assembly
- HYDRAULIC FILTER MOUNT
- HYDRAULIC RESERVOIR
- OIL COOLER
- DIRECT TO TANK VALVE
- BLADE CONTROL LEVER
- Handle Removal And Installation
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- CASE DRAIN FILTER MOUNT
- TRAVEL CONTROL VALVE
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- REMOVING AIR FROM THE HYDRAULIC SYSTEM
- HYDRAULIC X-CHANGE MANIFOLD
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- SECONDARY AUXILIARY VALVE
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- VALVE (BOOM LOCK)
- VALVE (ARM LOCK)
- UNDERCARRIAGE
- BLADE
- TRACK UNDERCARRIAGE COMPONENTS (RUBBER TRACK)
- Description
- Track Lug Height
- Checking Tension
- Adjusting Tension
- Removal And Installation
- Idler Removal And Installation
- Idler Parts Identification
- Idler Disassembly
- Idler Assembly
- Track Tensioner Removal And Installation
- Track Tensioner Parts Identification
- Track Tensioner Disassembly And Assembly
- Roller Removal And Installation
- Sprocket Removal And Installation
- TRACK UNDERCARRIAGE COMPONENTS (STEEL TRACK)
- Description
- 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 Parts Identification
- Track Tensioner Disassembly And Assembly
- Roller Removal And Installation
- Sprocket Removal And Installation
- Guide Plate Removal And Installation
- TRACK MAINTENANCE
- Track Damage Identification
- SWING CIRCLE GEAR
- Swing Bearing Removal
- Swing Bearing Installation
- UPPERSTRUCTURE AND SWING SECTION
- UPPERSTRUCTURE
- ROPS CANOPY
- CAB
- Removal And Installation
- Door Removal And Installation
- Front Window Removal And Installation
- Right Side Sliding Window Removal And Installation
- Glass Removal
- Glass Installation
- SEAT
- Removal And Installation
- Seat Mount Removal And Installation
- RIGHT CONSOLE
- Console Cover Removal And Installation
- LEFT CONSOLE
- Lower Console Cover Removal And Installation
- Upper Console Cover Removal And Installation
- Compression Spring Removal And Installation
- Lock Lever Removal And Installation
- Console Removal And Installation
- LEFT UPPERSTRUCTURE COVER
- RIGHT UPPERSTRUCTURE COVER
- COUNTERWEIGHT
- Removal And Installation
- Add On Counterweight Removal And Installation
- TRAVEL LEVERS AND PEDALS
- Removal And Installation
- Disassembly And Assembly
- FLOOR MAT AND FLOORPLATE
- FUEL TANK
- Removal And Installation
- Fuel Tank Fitting Removal And Installation
- HORN
- SWING FRAME
- Removal And Installation
- Boom Swing Frame Hose Routing
- Bushing Removal
- Bushing Installation
- BOOM
- ARM (STANDARD AND LONG)
- Removal And Installation
- Arm To Boom Bushing Removal And Installation
- Arm To Bucket And Bucket Link Bushing Removal And Installation
- BUCKET
- Bucket Teeth Removal And Installation
- Bucket Side Cutting Edge Removal And Installation
- CLAMP
- TAILGATE
- Removal And Installation
- Disassembly And Assembly
- QUICK COUPLER (KLAC™ SYSTEM)
- Troubleshooting
- Daily Inspection
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- QUICK COUPLER (PIN GRABBER)
- Troubleshooting
- Daily Inspection
- Removal And Installation
- Parts Identification
- Disassembly And Assembly
- RIGHT SIDE COVER
- Removal And Installation
- Latch Removal And Installation
- LEFT SIDE COVER
- TOOL BOX
- ELECTRICAL SYSTEM AND ANALYSIS
- ELECTRICAL SCHEMATICS
- ELECTRICAL SYSTEM INFORMATION
- Troubleshooting Chart
- Description
- Fuse And Relay Location / Identification
- BATTERY
- Servicing
- Maintaining Battery Charge Level
- Battery Service During Machine Storage
- Battery Testing
- Battery Charging
- Removal And Installation
- Using A Booster Battery (Jump Starting)
- ALTERNATOR
- Belt Adjustment
- Belt Replacement
- Charging System Inspection
- Alternator Voltage Testing
- Low Voltage Testing
- High Voltage Testing
- Removal And Installation
- Parts Identification
- STARTER
- Testing
- Removal And Installation
- Parts Identification
- LIGHTS
- Boom Light Removal And Installation
- Boom Light Bulb Replacement
- MAGNETIC LOCKOUT SENSOR
- FUEL LEVEL SENDER
- Removal And Installation
- Testing
- DIAGNOSTIC SERVICE CODES
- Viewing Service Codes
- Number Codes List
- CONTROL PANEL SETUP
- Panel Setup (Deluxe Instrument Panel)
- Password Setup (Keyless Start Panel)
- Password Setup (Deluxe Instrument Panel)
- Maintenance Clock
- INSTRUMENT PANEL
- CONTROLLER
- Description
- Auxiliary Controller Removal And Installation
- Gateway Controller Removal And Installation
- KEY SWITCH
- WIPER MOTOR
- MOTION ALARM SYSTEM
- Description
- Inspecting
- Adjusting Switch Position
- SERVICE PC (LAPTOP COMPUTER)
- Connecting The Remote Start Tool
- Connecting Remote Start Tool (Service Tool)
- SHUT-OFF SWITCH
- Description
- Removal And Installation
- TRAVEL MOTOR AUTO-SHIFT
- Auto-Shift Drive System (If Equipped)
- Troubleshooting
- ENGINE SPEED CONTROL
- AUTO IDLE PRESSURE SENSOR
- Description
- Removal And Installation
- BOBCAT MACHINE IQ WIRELESS COMMUNICATIONS
- Controller Removal And Installation
- Antenna Removal And Installation
- ENGINE SERVICE
- ENGINE INFORMATION
- Description
- Specifications
- Crankshaft Re-grind Data
- Torque For Kubota® Metric Bolts
- Troubleshooting
- Engine Removal And Installation
- Compression – Testing
- ENGINE SPEED CONTROL
- Removal And Installation
- Calibration
- Actuator Removal And Installation
- MUFFLER
- AIR CLEANER
- ENGINE COOLING SYSTEM
- Radiator Removal And Installation
- Fan Removal And Installation
- Water Pump Removal And Installation
- Water Pump Disassembly And Assembly
- Thermostat Housing Removal And Installation
- Thermostat – Testing
- LUBRICATION SYSTEM
- Oil Pan Removal And Installation
- Oil Pump Removal And Installation
- Oil Pump Inspection
- Engine Oil Pressure – Testing
- FUEL SYSTEM
- Fuel Shutoff Solenoid – Testing
- Fuel Shut-off Solenoid Removal And Installation
- Fuel Injection Pump – Testing
- 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 – Testing
- Nozzle Spray Condition
- Valve Seat Tightness
- CYLINDER HEAD
- Glow Plugs – Testing
- Glow Plugs Removal And Installation
- Valve Clearance Adjustment
- Valve Timing – Inspecting
- Cylinder Head Removal And Installation
- Cylinder Head Disassembly And Assembly
- Cylinder Head – Servicing
- Cylinder Head Top Clearance
- Valve Guide – Inspecting
- Valve Guide Removal And Installation
- Reconditioning The Valve And Valve Seat
- Valve Spring
- Valve Tappets
- Rocker Arm And Shaft – Inspecting
- Push Rod Alignment – Inspecting
- CRANKSHAFT AND PISTONS
- Piston And Connecting Rod Removal And Installation
- Piston And Connecting Rod – Servicing
- Cylinder Bore – Inspecting
- Connecting Rod Alignment
- Crankshaft Gear Removal And Installation
- Crankshaft And Bearings Removal And Installation
- Crankshaft And Bearings – Servicing
- CAMSHAFT AND TIMING GEARS
- Timing Gearcase Cover Removal And Installation
- Timing Gears Backlash – Inspecting
- Idle Gear And Camshaft Removal And Installation
- Camshaft – Servicing
- Idle Gear And Shaft – Servicing
- FLYWHEEL AND HOUSING
- Hydraulic Pump Coupler Removal And Installation
- Flywheel Removal And Installation
- Flywheel Ring Gear
- HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
- AIR CONDITIONING SYSTEM FLOW
- Description
- Chart
- Components
- Safety Equipment
- REGULAR MAINTENANCE
- Cab Filters
- Air Conditioning Compressor Belt Adjustment
- Air Conditioning Compressor Belt Replacement
- Condenser
- Air Conditioning Lubrication
- Evaporator / Heater Coil
- Air Conditioning Service Chart
- TROUBLESHOOTING
- Blower Motor Does Not Operate
- Blower Motor Operates Normally, But Air Flow Is Insufficient
- Insufficient Cooling Although Air Flow And Compressor Operation Are Normal
- The Compressor Operates Improperly Or Not At All
- Gauge Pressure Related Troubleshooting
- Temperature / Pressure Chart
- Poor A/C Performance
- HVAC Repair And Leaks
- Electrical System
- Engine Coolant Bypassing The Heater Valve
- SYSTEM CHARGING AND RECLAMATION
- Refrigerant Identification
- Reclamation And Charging With Recovery / Charging Unit
- COMPRESSOR
- Removal And Installation
- Oil
- Oil Check
- CONDENSER
- RECEIVER / DRIER
- Receiver / Drier Removal And Installation
- Pressure Switch Removal And Installation
- EVAPORATOR / HEATER UNIT
- THERMOSTAT
- Description
- Removal And Installation
- EXPANSION VALVE
- EVAPORATOR COIL
- HEATER COIL
- BLOWER FAN
- HEATER VALVE
- HVAC DUCT
- SPECIFICATIONS
- EXCAVATOR SPECIFICATIONS
- Machine Dimensions
- Machine Dimensions – Standard Arm
- Machine Dimensions – Long Arm
- Rated Lift Capacity For Standard Arm, Medium Counterweight, And Canopy
- Rated Lift Capacity For Long Arm, Medium Counterweight, And Canopy
- Rated Lift Capacity For Standard Arm, Heavy Counterweight, And Canopy
- Rated Lift Capacity For Standard Arm, Medium Counterweight, And Cab
- Rated Lift Capacity For Long Arm, Medium Counterweight, And Cab
- Rated Lift Capacity For Standard Arm, Heavy Counterweight, And Cab
- Rated Lift Capacity For Long Arm, Heavy Counterweight, And Canopy
- Rated Lift Capacity For Long Arm, Heavy Counterweight, And Cab
- Performance
- Controls
- Engine
- Hydraulic System
- Hydraulic Cycle Times
- Hydraulic Cylinders
- Drive System
- Slew System
- Undercarriage
- Electrical
- Capacities
- Tracks
- Ground Pressure
- Environmental
- Temperature Range
- TECHNICAL SERVICE GUIDE SPECIFICATIONS
- Engine
- Engine Torques
- Cooling System
- Excavator Torques
- TORQUE SPECIFICATION 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
- O-ring Flare Fitting
- Port Seal Fitting
- Push To Connect Fittings
- HYDRAULIC FLUID SPECIFICATIONS
- CONVERSIONS
- Decimal And Millimeter Equivalent Chart
- U.S. To Metric Conversion Chart
- SERVICE TOOLS REQUIRED
- Remote Start Tools
- Hydraulic Tools
- Engine Tools
- Electrical Tools
- General Tools
- HVAC Tools
- ALPHABETICAL INDEX
- SERVICE SCHEDULE SYMBOLS
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