Bobcat 337, 341 Excavator 6986746 (10-11) (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 & MAINTENANCE
LIFTING AND BLOCKING THE EXCAVATOR
Procedure
LIFTING THE EXCAVATOR
Procedure
OPERATOR CAB (ROPS / TOPS)
Emergency Exit
Cab Door
TRANSPORTING THE EXCAVATOR ON A TRAILER
Loading And Unloading
TAILGATE
Opening And Closing The Tailgate
Adjusting The Bumper
Adjusting The Latch
RIGHT SIDE COVER
Opening And Closing The Right Side Cover
SERVICE SCHEDULE
Chart
AIR CLEANER SERVICE
Daily Check
Replacing Filter Elements
HEATER AIR FILTER
Removal And Installation
COOLING SYSTEM
Cleaning The Cooling System
Checking Coolant Level
Replacing The Coolant
FUEL SYSTEM
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
ENGINE LUBRICATION SYSTEM
Checking Engine Oil
Oil Chart
Replacing Oil And Filter
HYDRAULIC SYSTEM
Checking And Adding Fluid
Hydraulic / Hydrostatic Fluid Chart
Removing And Replacing Hydraulic Filters
Removing And Replacing Hydraulic Fluid
Diagnostic Couplers
LUBRICATING THE EXCAVATOR
Lubrication Locations
TRAVEL MOTOR
Checking And Adding Oil
Draining The Travel Motor
SPARK ARRESTER MUFFLER
Cleaning Procedure
ENGINE ACCESSORY DRIVE BELT
Belt Tension
Belt Adjustment
SEAT BELT
Inspection And Maintenance
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 SCHEMATIC
HYDRAULIC SYSTEM INFORMATION
Glossary Of Hydraulic / Hydrostatic Symbols For Excavators
Troubleshooting The Hydraulic Circuit
Troubleshooting The Cylinder Circuit
Troubleshooting The Upperstructure Slew Circuit
Troubleshooting The Travel Circuit
Description
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
PORT RELIEF VALVES
Port Relief Valve Pressure Setting
Parts Identification
Adjustment Procedure
CROSSPORT RELIEF VALVE
Testing And Adjusting The Crossport Relief Valve
Removal And Installation
Parts Identification
Disassembly And Assembly
PRESSURE REDUCING VALVE
Description
ANGLE BLADE VALVE
Description
Testing And Adjusting Port Relief Valves
Testing And Adjusting Sequence Valve
Removal And Installation
Parts Identification
Disassembly
Assembly
HYDRAULIC CONTROL VALVE
Removal And Installation
Parts Identification
Disassembly And Assembly
Slew Valve Section
Boom Swing Valve Section
Blade Valve Section
Bucket Valve Section
Arm Valve Section
Boom Valve Section
Auxiliary Valve Section
Right Travel Valve Section
Left Travel Valve Section
Inlet Section
HYDRAULIC PUMP
Hydraulic Pump Work Sheet
Pump Testing
Removal And Installation
Coupler Removal And Installation
Hydraulic Pump Start Up
Torque Limiter Assembly Parts Identification
Torque Limiter Valve Assembly Removal And Installation
Torque Limiter Valve Assembly Disassembly And Assembly
Pump Control Parts Identification
Pump Control Removal And Installation
Pump Control Disassembly And Assembly
Parts Identification
Disassembly And Assembly
MANIFOLD ASSEMBLY / ACCUMULATOR
Description
Testing Pilot Pressure
Adjusting The Pilot Pressure
Removal And Installation
Manifold Assembly / Accumulator Parts Identification
Disassembly And Assembly
TRAVEL MOTOR
Removal And Installation
Parts Identification
Disassembly
Assembly
SWIVEL JOINT
Removal And Installation
Parts Identification
Disassembly
Assembly
SWING MOTOR
Removal And Installation
Parts Identification
Disassembly
Inspection
Assembly
SWING MOTOR DRIVE CARRIER
Removal And Installation
Parts Identification
Checking The Drive Carrier Shaft End Play
Disassembly
Inspection
Assembly
CONTROL PATTERN SELECTOR VALVE
Removal And Installation
Parts Identification
Disassembly
Assembly
RIGHT CONTROL LEVER (JOYSTICK)
Testing
Handle Removal And Installation
Joystick Assembly Removal And Installation
Parts Identification
Disassembly
Assembly
LEFT CONTROL LEVER (JOYSTICK)
Testing
Handle Removal And Installation
Joystick Assembly Removal And Installation
Parts Identification
Disassembly
Assembly
TRAVEL CONTROL VALVE
Removal and Installation
Parts Identification
Disassembly And Assembly
HYDRAULIC FILTER MOUNT
Removal And Installation
HYDRAULIC RESERVOIR
Removal And Installation
OIL COOLER
Removal And Installation
DUAL SEQUENCE VALVE
Removal And Installation
Parts Identification
Disassembly And Assembly
DIRECT TO TANK VALVE
Removal And Installation
Parts Identification
Disassembly And Assembly
BUILD UP VALVE
Removal And Installation
Parts Identification
Disassembly And Assembly
CASE DRAIN FILTER MOUNT
Removal And Installation
REMOVING AIR FROM HYDRAULIC SYSTEM
Procedure
BOOM SWING LOCK VALVE
Description
Removal And Installation
Parts Identification
Disassembly
Assembly
HYDRAULIC X-CHANGE VALVE
Removal And Installation
Parts Identification
Disassembly
Assembly
UNDERCARRIAGE
BLADE
Removal And Installation
TRACKS
Track Lug Height
Rubber Track Clearance
Rubber Track Adjustment
Steel Track Clearance
Steel Track Adjustment
Rubber Track Removal And Installation
Steel Track Removal
Steel Track Installation
Track Shoe Removal And Installation
TRACK FRAME
Disassembly And Assembly
Recoil Spring Cylinder Disassembly And Assembly
Cylinder Parts Identification (S/N AAC811571 & Below, A9W711150 & Below And A9W911149 & Below)
Recoil Spring Cylinder Disassembly And Assembly (S/N AAC811571 & Below, A9W711150 & Below And A9W911149 & Below)
Cylinder Parts Identification (S/N AAC811572 & Above, A9W711151 & Above And A9W911150 & Above)
Recoil Spring Cylinder Disassembly And Assembly (S/N AAC811572 & Above, A9W711151 & Above And A9W911150 & Above)
TRACK DAMAGE IDENTIFICATION
Cutting Of Steel Cords
Abrasion Of Embedded Metals
Separation Of Embedded Metals
Separation Of Embedded Metals Due To Corrosion
Cuts On The Lug Side Rubber
Cracks On The Lug Side Rubber Due To Fatigue
Lug Abrasion
Cracks And Cuts On The Lug Side Rubber
Abrasion Of The Track Roller Side
Cuts On The Edges Of Track Roller Side
TRACK IDLER
Parts Identification
Disassembly
Assembly
TRACK ROLLER
Parts Identification (Upper Roller)
Disassembly (Upper Roller)
Assembly (Upper Roller)
Parts Identification (Lower Roller)
Disassembly (Lower Roller)
Assembly (Lower Roller)
SWING CIRCLE GEAR
Swing Bearing Removal
Swing Bearing Installation
UPPERSTRUCTURE AND SWING SECTION
UPPERSTRUCTURE
Removal
Installation
ANGLE BLADE ASSEMBLY
Removal And Installation
ANGLE BLADE
Removal And Installation
ANGLE BLADE CUTTING EDGE
Removal And Installation
ROPS 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
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 Removal
Glass Installation
SEAT AND SEAT MOUNT
Removal And Installation
RIGHT CONSOLE
Console Cover Removal And Installation
Console Base Removal And Installation
LEFT CONSOLE
Lower Console Cover Removal And Installation
Upper Console Cover Removal And Installation
Compression Spring Removal And Installation
Compression Spring Disassembly And Assembly
Lock Lever Removal And Installation
Console Removal And Installation
Disassembly And Assembly
Console Switch Removal And Installation
Console Base Removal And Installation
ENGINE SPEED CONTROL
Removal And Installation
Adjustment (Later Models)
BLADE CONTROL
Lever Removal And Installation
Linkage Removal And Installation
Linkage Disassembly And Assembly
Linkage Bar Removal And Installation
Lower Linkage Removal And Installation
Lower Linkage Disassembly And Assembly
RIGHT PEDAL AND LINKAGE
Pedal Removal And Installation
Pedal Disassembly And Assembly
Lower Linkage Removal And Installation
Lower Linkage Disassembly And Assembly
Bellcrank Removal And Installation
TRAVEL CONTROLS
Removal And Installation
Disassembly And Assembly
Adjustment
CONTROL LINKAGE ASSEMBLY
Removal And Installation
FLOOR MAT AND FLOOR PLATE
Removal And Installation
FUEL TANK
Removal And Installation
HORN
Removal And Installation
SWING FRAME
Boom Swing Bracket Removal And Installation
Boom Swing Bracket Hose Installation
Swing Bracket Bushing Removal
Swing Bracket Bushing Installation
Boom Pivot Pin Bushing Removal
Boom Pivot Pin Bushing Installation
BOOM
Removal And Installation
Boom Pivot Pin Bushing Removal And Installation
ARM
Removal And Installation
BUCKET
Bucket Teeth Removal And Installation
CLAMP
Removal And Installation
TAILGATE
Removal And Installation
Latch Removal And Installation
Striker Removal And Installation
X-CHANGE
Removal And Installation
Parts Identification
Disassembly
Assembly
Check Proper Latch Engagement
X-CHANGE (PIN ON)
Removal And Installation
Parts Identification
Disassembly And Assembly
X-CHANGE (HYDRAULIC)
Removal And Installation
Parts Identification
Disassembly
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
Troubleshooting Chart
Description
Fuse And Relay Location
BATTERY
Servicing
Removing And Installing The Battery
Using A Booster Battery (Jump Starting)
ALTERNATOR
Engine Accessory Drive Belt
Removal And Installation
Alternator Identification
Charging System Check
Alternator Voltage Test
Low Voltage Test
High Voltage Test
Rectifier Continuity (Diode) Test
Alternator Regulator Test
Parts Identification
Disassembly
Stator Continuity Test
Stator Ground Test
Rotor Continuity Test
Rotor Ground Test
Assembly
STARTER
Removal And Installation
Parts Identification
Disassembly
Inspection And Repair
Assembly
LIGHTS
Removal And Installation
Disassembly And Assembly
TWO-SPEED SWITCH
Removal And Installation
FUEL LEVEL SENDER
Removal And Installation
Testing And Inspection
DIAGNOSTICS SERVICE CODE
Number 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
TROUBLESHOOTING
Chart
MUFFLER
Removal And Installation
AIR CLEANER
Removal And Installation
RADIATOR
Removal And Installation
ENGINE COMPONENTS AND TESTING
Engine Compression Checking
Glow Plugs Removal And Installation
Checking The Glow Plug
Fuel Shut-off Solenoid Removal And Installation
Fuel Injection Pump Check
Fuel Injection Pump Removal And Installation
Fuel Injection Pump Timing
Fuel Injector Nozzles Removal And Installation
Fuel Injector Nozzle Check
Valve Clearance Adjustment
ENGINE
Removal And Installation
ENGINE FLYWHEEL
Flywheel Removal And Installation
Hydraulic Pump Coupler
Flywheel Ring Gear
RECONDITIONING THE ENGINE
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
Rocker Arm And Shaft Checking
Timing Gearcase Cover Removal And Installation
Idler Gear And Camshaft Removal And Installation
Camshaft Servicing
Idler Gear And Shaft Servicing
Timing Gears Checking Backlash
Fuel Camshaft Removal And Installation
Fuel Camshaft Governor
Crankshaft Gear Removal And Installation
Oil Pump Removal And Installation
Oil Pump Service
Checking Engine Oil Pressure
Valve Tappets
Piston And Connecting Rod Removal And Installation
Piston And Connecting Rod Servicing
Connecting Rod Alignment
Crankshaft And Bearings Removal And Installation
Crankshaft And Bearings, Servicing
Cylinder Bore, Checking
Water Pump Removal And Installation
Water Pump Disassembly And Assembly
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 Inspection
Cleaning The Condenser
BASIC TROUBLESHOOTING
Poor A/C Performance
Cleaning The A/C Evaporator Coil And Heater Coil
Engine Accessory Drive Belt Inspection
Checking The Electrical System
Engine Coolant Bypassing The Heater Valve
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 Procedure With A Manifold Gauge Set
COMPRESSOR
Removal And Installation
Compressor Clutch Disassembly And Assembly
CONDENSER
Removal And Installation
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
EVAPORATOR VALVE
Removal And Installation
BLOWER FAN
Removal And Installation
Disassembly And Assembly
Resistor Removal And Installation
SPECIFICATIONS
(337, 341) EXCAVATOR SPECIFICATIONS
337 Dimensions
337 W / Long Arm And 341 Dimensions
337 And 341 With Optional Angle Blade Dimensions
Performance
Controls
Engine
Hydraulic System
Hydraulic Cylinders
Hydraulic Cycle Times
Electrical
Instrumentation
Drive System
Slew System
Undercarriage
Crawler Track Design
Capacities
Fuel Tank
Track
Type
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
O-ring 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
ALPHABETICAL INDEX
SERVICE MANUAL REVISION
Revision No: 337 / 341 – 1
Revision No: 337 / 341 – 2
Revision No: 337 / 341 – 3
Revision No: 337 / 341 – 4
Revision No: 337 / 341 – 5
Revision No: 337, 341 – 6
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