On a real job, an E37 is digging footings, trenching for utilities, or working tight spots where a big excavator won't fit. The person who reaches for this service manual is the one actually fixing it when it quits digging or starts acting weird. They're trying to keep downtime short, get the right torque and test specs, and avoid guessing on hydraulics or wiring.
What this manual helps you do
- Trace and diagnose hydraulic problems in the boom, arm, bucket, and auxiliary circuits on the E37
- Check and set hydraulic and hydrostatic test points using the correct ports and sequences
- Follow step-by-step tear-down and reassembly of major components like cylinders, swing motor, and final drives
- Diagnose electrical issues using wiring diagrams specific to the E37, including sensors and safety switches
- Replace and adjust engine, cooling, and fuel system parts with the right procedures and specs
Who this is for
This is for someone working on a Bobcat E37 excavator with a serial number between B4S611001 and B4S699999, like a small contractor, owner-operator, or shop mechanic. If you just want to learn how to run the machine or see what parts to order, you want the operator's handbook or the parts catalog instead.
FAQ
Q: Is this a searchable PDF, and can I read the wiring diagrams clearly?
A: Yes, these manuals are typically in searchable PDF format and the wiring diagrams are meant to be zoomed in and read on screen or printed.
Q: How do I know if it fits my exact E37?
A: Check your machine's serial plate. If it falls within B4S611001 to B4S699999, this is the correct service manual series.
Q: Is this the right document if I'm doing real repairs, not just maintenance?
A: Yes, this is the workshop-level service manual, meant for diagnostics and repair, not just basic daily checks.
Bottom line: If your E37's serial number is in that B4S611001-B4S699999 range and you're actually turning wrenches on it, 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 (Earlier Models)
- 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
- 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
- Description
- Removal And Installation
- Procedure
- 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, Heavy Counterweight, And Canopy
- 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
- 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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