Bobcat 337, 341 G-Series Excavator Service Manual – 6902741 (11-09)

337 (S/N: 234611001 & Above) – 341 (S/N: 234711001 & Above) – (G Series)
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This workshop repair service manual PDF download for the 337 & 341 Bobcat Mini Hydraulic Excavator has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to fully at every opportunity.

APPLICABLE MODELS :

Bobcat Excavator 337 & 341
337 (S/N: 234611001 & Above)
341 (S/N: 234711001 & Above)
(G Series)

TABLE OF CONTENTS :

FOREWORD
SAFETY INSTRUCTIONS
FIRE PREVENTION
SERIAL NUMBER LOCATIONS
DELIVERY REPORT
BOBCAT EXCAVATOR IDENTIFICATION
SAFETY AND MAINTENANCE
HYDRAULIC SYSTEM
UNDERCARRIAGE
UPPERSTRUCTURE & SWING SECTION
ELECTRICAL SYSTEM AND ANALYSIS
ENGINE SERVICE
HEATING, VENTILATION, AIR CONDITIONING
SPECIFICATIONS
SERVICE MANUAL REVISION

MANUAL SPECIFICATION :

File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
P/N : 6902741 (11-09)
Total Pages : 1053

This service repair workshop manual PDF download contains specs, diagrams, actual real photo illustrations, and schemes. In addition to space savings, nice thing about having completly searcheble PDF files instead of a hard-printed manual is that you can use the Search feature in your PDF reader software (Adobe Acrobat) to find just what your looking for and just print out the exact pages you need or all manual easily. This is the same manual your local dealer will use when doing a repair. This is a must for the Do-It-Yourselfer! Saving Yourself $$$$$$ In Service Repair And Maintenance Costs !!!!

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MAINTENANCE SAFETY
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
BOBCAT EXCAVATOR IDENTIFICATION

SAFETY AND MAINTENANCE
LIFTING AND BLOCKING THE EXCAVATOR
LIFTING THE EXCAVATOR
OPERATOR CAB (ROPS/TOPS)
Emergency Exit
Cab Door
TRANSPORTING THE EXCAVATOR
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
Checking
Replacing The Filters
HEATER AIR FILTER
Fresh Air Filter
COOLING SYSTEM
Cleaning The Cooling System
Checking Coolant Level
Replacing The Coolant
FUEL SYSTEM
Fuel Specifications
Filling The Fuel Tank
Removing Water From The Fuel Filter
Draining The Fuel Tank
Fuel Filter
Removing Air From The Fuel System
ENGINE LUBRICATION SYSTEM
Checking Engine Oil
Oil Chart
Replacing Oil And Filter
HYDRAULIC SYSTEM
Checking And Adding Hydraulic Oil
Replacing The Hydraulic Oil
Replacing The Hydraulic Filter
Replacing The Case Drain Filter
Diagnostic Couplers
LUBRICATION OF THE EXCAVATOR
Procedure
TRAVEL MOTOR
Checking Oil Level
Draining The Travel Motor
SPARK ARRESTOR MUFFLER
ENGINE ACCESSORY DRIVE BELT
Belt Tension
Belt Adjustment
SEAT BELT
Inspection And Maintenance

HYDRAULIC SYSTEM
HYDRAULIC / HYDRSTATIC SCHEMATICS
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
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
HYDRAULIC CONTROL VALVE
Removal And Installation
Parts Identification
Disassembly And Assembly
Slew Valve Section
Boom Swing Valve Section
Blade Valve Section (S/N 234611001-234611163 And S/N 234711001-234711197)
Blade Valve Section (S/N 234611164 & Above And 234711198 & Above)
Bucket Valve Section
Arm Valve Section
Boom Valve Section
Auxiliary Valve Section
Right Travel Valve Section
Left Travel Valve Section
Inlet Section
HYDRAULIC PUMP (234611001 – 234613190, 234613193 – 234613247, 234711001 – 234713440)
Hydraulic Pump Work Sheet
Pump Testing
Removal And Installation
Coupler Removal And Installation
Hydraulic Pump Start Up
Torque Limiter Valve Parts Identification
Torque Limiter Valve Removal
Torque Limiter Valve Disassembly
Torque Limiter Valve Assembly
Initial Torque Limiter Valve Setting
Torque Limiter Valve Installation
Pump Control Parts Identification
Pump Control Removal And Installation
Pump Control Disassembly And Assembly
Parts Identification
Disassembly
Assembly
HYDRAULIC PUMP (S/N 234613191, 234613192, 234613248 & Above, 2347133441 & above)
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 (S/N 234611163 & BELOW AND 234711197 & BELOW)
Disassembly And Assembly
Recoil Spring Cylinder Disassembly And Assembly (W/O Replaceable Shaft).
Recoil Spring Cylinder Parts Identification (With Replaceable Shaft)
Recoil Spring Cylinder Disassembly And Assembly (With Replaceable Shaft)
TRACK FRAME (S/N 234611164 & ABOVE AND 234711198 & ABOVE)
Disassembly And Assembly
Recoil Spring Cylinder Disassembly And Assembly (W/O Replaceable Shaft)
Recoil Spring Cylinder Parts Identification (With Replaceable Shaft)
Recoil Spring Cylinder Disassembly And Assembly (With Replaceable Shaft)
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 (S/N 234611163 & BELOW AND 234711197 & BELOW)
Parts Identification
Disassembly
Assembly
TRACK IDLER (S/N 234611164 & ABOVE AND 234711198 & ABOVE)
Parts Identification
Disassembly
Assembly
TRACK ROLLER (S/N 234611163 & BELOW AND 234711197 & BELOW)
Parts Identification
Disassembly
Assembly
TRACK ROLLER (S/N 234611164 & ABOVE AND 234711198 & ABOVE)
Parts Identification (Upper Roller)
Disassembly (Upper Roller)
Assembly (Upper Roller)
Parts Identification (Lower Roller)
Disassembly (Lower Roller)
Assembly (Lower Roller)
SWING CIRCLE GEAR (S/N 234611163 & BELOW AND 234711197 & BELOW)
Swing Bearing Removal
Swing Bearing Installation
SWING CIRCLE GEAR (S/N 234611164 & ABOVE AND 234711198 & ABOVE)
Swing Bearing Removal
Swing Bearing Installation

UPPERSTRUCTURE & SWING SECTION
UPPERSTRUCTURE
Removal
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
FLOORMAT 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

ELECTRICAL SYSTEM AND 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
ENGINE FLYWHEEL (LATER MODELS)
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 (EARLY MODELS)
Removal And Installation With A/C
Removal And Installation Without A/C
HEATER COIL (LATER MODELS)
Removal And Installation With A/C
Removal And Installation Without A/C
BLOWER FAN (EARLY MODELS)
Removal And Installation
Disassembly And Assembly
BLOWER FAN (LATER MODELS)
Removal And Installation
Disassembly And Assembly
Resistor Removal And Installation
HEATER VALVE (EARLY MODELS)
Removal And Installation
HEATER VALVE (LATER MODELS)
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 (EARLY MODELS)
Poor A/C Performance
Cleaning The A/C Evaporator Coil & Heater Coil
Engine Accessory Drive Belt Inspection
Checking The Electrical System
Engine Coolant By-Passing The Heater Valve
BASIC TROUBLESHOOTING (LATER MODELS)
Poor A/C Performance
Cleaning The A/C Evaporator Coil & Heater Coil
Engine Accessory Drive Belt Inspection
Checking The Electrical System
Engine Coolant By-Passing 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 (EARLY MODELS)
Removal And Installation
Disassembly And Assembly
EVAPORATOR/HEATER UNIT (LATER MODELS)
Removal And Installation
Disassembly And Assembly
THERMOSTAT (EARLY MODELS)
Removal And Installation
THERMOSTAT (LATER MODELS)
Removal And Installation
EXPANSION VALVE (EARLY MODELS)
Removal And Installation
EVAPORATOR VALVE (LATER MODELS)
Removal And Installation
EVAPORATOR (EARLY MODELS)
Removal And Installation
EVAPORATOR (LATER MODELS)
Removal And Installation

SPECIFICATIONS
SPECIFICATIONS
Excavator Machine Dimensions (S/N 234611001 – 234611163 And 234711001 – 234711197)
337 Excavator Machine Dimensions (S/N 234611001 – 234611163 And 234711001 – 234711197)
341 Excavator Machine Dimensions (S/N 234611001 – 234611163 And 234711001 – 234711199)
Excavator Machine Dimensions (S/N 234611164 & Above And 234711198 & Above)
337 Excavator Machine Dimensions (S/N 234611164 & Above And 234711198 & Above)
341 Excavator Machine Dimensions (S/N 234611164 & Above And 234711198 & Above)
Performance
Controls
Engine
Hydraulic System
Hydraulic Cylinders (S/N 234611001 – 234611163 And 234711001 – 234711197)
Hydraulic Cylinders (S/N 234611164 & Above And 234711198 & Above)
Hydraulic Cycle Times
Drive System
Undercarriage
Track
Electrical
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

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
Revision No: 337/341-7
Revision No: 337/341-8
Revision No: 337/341-9
Revision No: 337/341-10
Revision No: 337/341-11
Revision No: 337/341-12

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