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Bobcat 3400 Utility Vehicle Service Manual (SN AJNU11001-AJNU99999)

Format: PDF (Printable Document)

File Language: English

File Pages: 528

File Size: 14.64 MB (Speed Download Link)

Brand: Bobcat

Model: 3400 Utility Vehicle

Book No: 6989606

Serial No: SN AJNU11001-AJNU99999

Type of Document: Service Manual

Categories: ,

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Bobcat 3400 Utility Vehicle Service Manual (SN AJNU11001-AJNU99999)

The Bobcat 3400 utility vehicle is the little farm truck that hauls seed, fencing, tools, and people all over the place. The service manual is what I pull out when the machine quits starting, loses drive, or starts eating wheel bearings and I've only got a weekend to sort it out. People who reach for this manual are past the "check the fuse" stage and need real teardown and diagnostic info, not safety stickers and cupholder locations.

What this manual helps you do

  • Diagnose no-start, hard-start, or low-power issues with the small diesel or gas engine using step-by-step checks
  • Trace and repair electrical problems using wiring diagrams, connector callouts, and test procedures
  • Check and repair drive system issues like no movement, weak pull, or odd noises from the transaxle or driveline
  • Follow correct teardown and reassembly sequences for hubs, brakes, steering, and suspension parts
  • Verify fluid change procedures and adjustment points after repairs so you don't cook a new component on first use

Who this is for

This is for a farm or ranch owner, small contractor, rental fleet, or shop mechanic working on a Bobcat 3400 with serial number AJNU11001 through AJNU99999. If you just want basic controls, daily checks, and capacities, 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: Yes, it's a PDF and you can zoom in to see wiring and hydraulic schematics clearly.

Q: Does this cover my exact machine?

A: If your 3400's serial number starts with AJNU and falls between AJNU11001 and AJNU99999, this is the right manual.

Q: Is this the right book if I'm only doing light maintenance?

A: It will work, but it's overkill. It's meant for real troubleshooting and repairs, not just fluid changes.

Bottom line: if you own or wrench on a Bobcat 3400 in that AJNU serial range and plan to fix problems yourself, this is the yes you're looking for.

📘 Show Index

Table of Contents:

  • MAINTENANCE SAFETY
  • CONTENTS
  • FOREWORD
    • FOREWORD
    • SAFETY INSTRUCTIONS
    • FIRE PREVENTION
      • Maintenance
      • Operation
      • Electrical
      • Fueling
      • Starting
      • Spark Arrester Exhaust System
      • Welding And Grinding
      • Fire Extinguishers
    • SERIAL NUMBER LOCATIONS
      • Utility Vehicle Serial Number
      • Engine Serial Number
    • DELIVERY REPORT
    • UTILITY VEHICLE IDENTIFICATION (3400)
    • UTILITY VEHICLE IDENTIFICATION (3400XL)
  • SAFETY AND MAINTENANCE
    • LIFTING AND BLOCKING THE UTILITY VEHICLE
      • Procedure
    • ROLLOVER PROTECTIVE STRUCTURE (ROPS)
      • Description
    • TRANSPORTING THE UTILITY VEHICLE ON A TRAILER
      • Loading And Unloading
      • Fastening
    • TOWING THE UTILITY VEHICLE
      • Procedure
    • SERVICE SCHEDULE
      • Chart
    • AIR CLEANER SERVICE
      • Pre-Filter Element
      • Replacing Filter Element
    • ENGINE COOLING SYSTEM
      • Checking Level
      • Cleaning
      • Removing And Replacing Coolant
    • FUEL SYSTEM
      • Fuel Specifications
      • Biodiesel Blend Fuel
      • Filling The Fuel Tank
      • Fuel Filter
      • Removing Air From The Fuel System
      • Filling A Portable Fuel Container
    • ENGINE LUBRICATION SYSTEM
      • Checking And Adding Engine Oil
      • Engine Oil Chart
      • Removing And Replacing Oil And Filter
    • CONTINUOUS VARIABLE TRANSMISSION (CVT)
      • CVT Drying
      • CVT Filter
    • GEARCASE
      • Checking Transmission Fluid
      • Transmission Fluid
      • Adding Transmission Fluid
      • Removing And Replacing Transmission Fluid
      • Checking Front Gearcase Fluid
      • Front Gearcase Fluid
      • Adding Front Gearcase Fluid
      • Removing And Replacing Front Gearcase Fluid
      • Checking Rear Gearcase Fluid
      • Rear Gearcase Fluid
      • Adding Rear Gearcase Fluid
      • Removing And Replacing Rear Gearcase Fluid
    • TIRE MAINTENANCE
      • Tires
      • Tire Tread Depth
      • Axle And Wheel Nut Torque
      • Wheel Removal And Installation
      • Mounting
      • Tire Pressure
    • SPARK ARRESTER MUFFLER
      • Cleaning Procedure
    • UTILITY VEHICLE STORAGE AND RETURN TO SERVICE
      • Storage
      • Return To Service
    • STOPPING THE ENGINE AND LEAVING THE UTILITY VEHICLE
      • Procedure
    • SEAT BELT
      • Inspection And Maintenance
    • LUBRICATING THE UTILITY VEHICLE
      • Lubrication Locations
  • DRIVE SYSTEM
    • BRAKE
      • General Specifications
      • Torque Specifications
      • System Service Notes
      • Noise Troubleshooting
      • System Troubleshooting
      • Hydraulic Brake System Operation
      • System Parts Identification
      • Master Cylinder Removal And Installation
      • Foot Brake Pedal Removal And Installation
      • Bleeding / Fluid Removal And Installation
      • Brake Inspection
      • Brake Pad Inspection
      • Burnishing
    • BRAKE (FRONT)
      • Pad Removal
      • Pad Installation
      • Caliper Removal
      • Caliper Parts Identification
      • Caliper Disassembly
      • Caliper Inspection
      • Caliper Assembly
      • Caliper Installation
      • Disc Inspection
      • Disc Removal And Installation
    • BRAKE (REAR) (S/N AJNT11001 & ABOVE)
      • Pad Removal
      • Pad Installation
      • Caliper Removal
      • Caliper Parts Identification
      • Caliper Disassembly
      • Caliper Inspection
      • Caliper Assembly
      • Caliper Installation
      • Disc Inspection
      • Disc Removal And Installation
    • BRAKE (REAR) (S/N AJNW11001 & ABOVE)
      • Pad Removal
      • Pad Installation
      • Caliper Removal
      • Caliper Parts Identification
      • Caliper Disassembly
      • Caliper Inspection
      • Caliper Assembly
      • Caliper Installation
      • Disc Inspection
      • Disc Removal And Installation
    • BRAKE (PARK)
      • Inspection And Maintenance
      • Parts Identification
      • Lever Removal And Installation
      • Cable Tension Inspection
      • Cable Adjustment
      • Caliper Removal
      • Caliper Parts Identification
      • Caliper Disassembly
      • Caliper Inspection
      • Pad Installation
      • Caliper Assembly
      • Disc Inspection
      • Disc Removal And Installation
      • Caliper Installation
    • GEARCASE (TRANSMISSION)
      • System Troubleshooting
      • Shift Lever Removal And Installation
      • Shift Cable Inspecting
      • Shift Cable Adjustment
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Gear Cluster Disassembly
      • Assembly
    • DRIVE BELT
      • Removal And Installation (S/N AJNU19999 & Below And AJNW19999 & Below)
      • Removal And Installation (S/N AJNU20001 & Above And AJNW20001 & Above)
      • Belt Inspection (S/N AJNU19999 & Below And AJNW19999 & Below)
      • Belt Inspection (S/N AJNU20001 & Above And AJNW20001 & Above)
      • Belt Damage
    • CONTINUOUS VARIABLE TRANSMISSION (cvt)
      • CVT System Overview
      • Drive Clutch Operation
      • Driven Clutch Operation
      • CVT Break-In (Drive Belt / Clutches)
      • Maintenance And Inspection
      • Overheating Troubleshooting
      • System Troubleshooting
      • CVT Sealing And Ducting Components Parts Identification
      • CVT (Outer) Cover Removal And Installation
      • CVT (Inner) Cover Removal And Installation
      • Clutch Offset
    • CONTINUOUS VARIABLE TRANSMISSION (CVT) (DRIVE CLUTCH)
      • Removal And Installation
      • Spring Specifications
      • Shift Weights
      • Parts Identification (S/N AJNU19999 & Below And AJNW19999 & Below)
      • Parts Identification (S/N AJNU20001 & Above And AJNW20001 & Above)
      • Inspection
      • Button To Tower Clearance Inspection
      • Disassembly (S/N AJNU19999 & Below And AJNW19999 & Below)
      • Disassembly (S/N AJNU20001 & Above And AJNW20001 & Above)
      • Moveable Sheave Bushing Removal And Installation
      • Clutch Cover Bushing Removal And Installation
      • Assembly (S/N AJNU19999 & Below And AJNW19999 & Below)
      • Assembly (S/N AJNU20001 & Above And AJNW20001 & Above)
    • CONTINUOUS VARIABLE TRANSMISSION (CVT) (DRIVEN CLUTCH)
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • FINAL DRIVE
      • Description
      • Front Hub Removal
      • Hubstrut Bearing Removal And Installation
      • Front Hub Installation
      • Front Drive Shaft Removal And Installation
      • Outer CV Joint And Boot (Front Drive Shaft) Removal And Installation
      • Propshaft Removal And Installation (S/N AJNU11001 & Above)
      • Propshaft Removal And Installation (S/N AJNW11001 & Above)
      • Support Bearing Removal And Installation (S/N AJNW11001 & Above)
      • Propshaft U-Joint Disassembly
      • Propshaft U-Joint Assembly
      • Front Gearcase Operation
      • Front Gearcase Removal And Installation
      • Front Gearcase Parts Identification
      • Front Gearcase Disassembly / Inspection
      • Front Gearcase Assembly
      • Rear Bearing Carrier Inspection
      • Rear Bearing Carrier Removal
      • Rear Bearing Carrier Disassembly And Assembly
      • Rear Bearing Carrier Installation
      • Rear Drive Shaft Removal And Installation
      • Outer CV Joint And Boot (Rear Drive Shaft) Removal And Installation
      • Inner Plunging Joint And Boot (Rear Drive Shaft) Removal And Installation
      • Rear Propshaft Removal And Installation
      • Rear Gearcase Operation
      • Rear Gearcase Removal And Installation
      • Rear Gearcase Parts Identification
      • Rear Gearcase Disassembly
      • Rear Gearcase Assembly
  • MAINFRAME
    • ROLL OVER PROTECTIVE STRUCTURE (ROPS)
      • Removal And Installation
    • OPERATOR SEAT
      • Seat Back Removal And Installation
      • Seat Base Removal And Installation
      • Seat Belt Removal And Installation
    • DASH
      • Front Access Cover Removal And Installation
      • Left Dash Removal And Installation
      • Right Dash Removal And Installation
      • Center Dash Removal And Installation
    • BUMPER COVER
      • Removal And Installation
    • STRUT
      • Strut Cartridge Removal And Installation
    • STEERING COLUMN (S/N AJNU19999 & BELOW AND AJNW19999 & BELOW)
      • Steering Wheel Removal And Installation
      • Parts Identification
      • Steering Shaft Removal And Installation
    • STEERING COLUMN (S/N AJNU20001 & ABOVE AND S/N AJNW20001 & ABOVE)
      • Description
      • Tilt Steering Shock Removal And Installation
      • Parts Identification
      • Steering Wheel Removal And Installation (Non-Power Steering Equipped Models)
      • Steering Wheel Removal And Installation (Power Steering Equipped Models)
      • Steering Shaft Removal And Installation (Non-Power Steering Equipped Models)
      • Steering Shaft Removal And Installation (Power Steering Equipped Models)
      • Pivot Tube Bearing Removal And Installation
    • STEERING COLUMN (POWER STEERING UNIT) (S/N AJNU20001 & ABOVE AND S/N AJNW20001 & ABOVE) (CONT’D)
      • Power Steering Unit Removal And Installation (If Equipped)
    • STEERING BOX
      • Removal And Installation
    • FUEL TANK
      • Removal And Installation
    • SHOCKS
      • Removal And Installation
      • Shock Spring Removal And Installation
    • CONTROL ARMS
      • Removal And Installation (Rear Lower Arm)
      • Removal And Installation (Upper Arm)
      • Removal And Installation (Rear Upper Arm)
      • Removal And Installation (Front Arm)
      • Inspection
      • Ball Joint Removal And Installation
    • TIE ROD
      • Description
      • Removal And Installation
      • Toe Adjustment Procedure
    • TAILGATE
      • Removal And Installation
      • Latch Removal And Installation
    • CARGO BOX
      • Removal And Installation
    • FENDER
      • Removal And Installation (Front)
      • Removal And Installation (Rear)
      • Flare Removal And Installation
    • REAR STABILIZER BAR / LINKAGE
      • Removal And Installation
      • Inspection
  • ELECTRICAL SYSTEM AND ANALYSIS
    • ELECTRICAL SCHEMATICS
    • ELECTRICAL SYSTEM INFORMATION
      • Glossary Of Electrical Symbols
      • Description
      • Troubleshooting
      • Description
      • Fuse And Relay Location
    • BATTERY
      • Removal And Installation
      • Servicing
      • Battery Charging
      • Using A Booster Battery (Jump Starting)
    • CHARGING SYSTEM
      • Current Draw – Key OFF
      • Break Even Test
      • Alternator Voltage Test
      • Low Voltage Test
      • Removal And Installation
      • Alternator Belt Adjustment
      • Belt Replacement
    • STARTER SYSTEM
      • Testing
      • Removal And Installation
    • STOP SOLENOID
      • Description
    • LIGHTS
      • Headlight Removal And Installation
      • Headlight Adjustment
      • Tail Light / Brake Light Removal And Installation
      • Indicator Lamp Removal And Installation
      • Glow Plug Light Removal And Installation
    • VEHICLE CONTROL MODULE
      • Description
      • Removal And Installation
    • SPEED SENSORS
      • Engine Speed Sensor Removal And Installation
      • Vehicle Speed Sensor Removal And Installation
    • SWITCH (HEADLIGHT)
      • Removal And Installation
      • Testing
    • SWITCH (BRAKE LIGHT)
      • Removal And Installation
      • Testing
    • SWITCH (PARKING BRAKE)
      • Description
      • Removal And Installation
      • Testing
    • SWITCH (AWD / 2WD / TURF)
      • Removal And Installation
      • Testing
    • SWITCH (KEY)
      • Removal And Installation
    • SWITCH (GEAR SELECTOR)
      • Removal And Installation
    • TEMPERATURE SENSOR
      • Description
      • Testing
      • Removal And Installation
    • DIFFERENTIAL SOLENOID
      • Description
      • Removal And Installation
    • DIFFERENTIAL SOLENOID (REAR RELAY)
      • Description
      • Removal And Installation
    • OIL PRESSURE SENSOR
      • Location
      • Removal And Installation
    • HOURMETER
      • Removal And Installation
    • BACK-UP ALARM SYSTEM (IF EQUIPPED)
      • Description
      • Inspecting
      • Removal And Installation
    • DIAGNOSTIC TESTING (POWER STEERING)
      • Power Steering Operation
      • Power Steering 8-Way Wire Harness Connector
      • Proper Power Steering System Diagnosing
      • Power Steering Troubleshooting (Power Steering Non-Functional With MIL ON)
      • Power Steering Troubleshooting (Power Steering Non-Functional With MIL OFF)
      • Power Steering Troubleshooting (Using Digital Wrench™)
      • Power Steering Temperature Test
      • Battery Voltage Over / Under Test
      • Digital Wrench™ Diagnostic Software
      • Digital Wrench™ Diagnostic Connector
      • Digital Wrench™ SmartLink Module Kit – MEL1721
      • Serial Number Location
      • Version And Update ID
      • Updates
      • Digital Wrench™ Feature Map
      • Power Steering Unit Reprograming (Reflash)
  • ENGINE SERVICE
    • ENGINE INFORMATION
      • Description
      • Specifications
      • Torque Values
      • Troubleshooting
      • Engine Removal And Installation
      • Engine Mount Replacement
      • Compression – Checking
    • THROTTLE SYSTEM
      • Throttle Pedal Removal And Installation
      • Throttle Cable Removal And Installation
      • Throttle Freeplay
      • Inspection And Maintenance
      • Throttle Freeplay Adjustment
    • MUFFLER
      • Removal And Installation
    • AIR CLEANER
      • Housing Removal And Installation
    • ENGINE COOLING SYSTEM
      • Cooling System Pressure Test
      • Radiator Cap Pressure Test
      • Radiator Removal And Installation
      • Cooling Fan Removal And Installation
      • Shroud Removal And Installation
      • Water Pump Disassembly And Assembly
      • Thermostat Housing Removal And Installation
    • LUBRICATION SYSTEM
      • Oil Pan Removal And Installation
      • Removal
      • Installation
      • Oil Pump Disassembly And Assembly
      • Oil Pump Inspection
      • Engine Oil Pressure – Testing
    • FUEL SYSTEM
      • Stop Solenoid
      • High-Pressure Fuel Injection Lines Removal And Installation
      • Fuel Return Line Removal And Installation
      • Fuel Injection Pump Removal
      • Fuel Injection Pump Installation
      • Injection Pump – Timing
      • Fuel Injector Removal And Installation
      • Fuel Injector Disassembly
      • Fuel Injector Assembly
      • Fuel Injector Nozzle Pressure – Checking
      • Nozzle Spraying Condition
    • CYLINDER HEAD
      • Intake And Exhaust Valves
      • Valve Clearance Adjustment
      • Cylinder Head Removal And Installation
      • Cylinder Head Disassembly And Assembly
      • Cylinder Head – Servicing
      • Valve Guide – Checking
      • Reconditioning The Valve And Valve Seat
      • Valve Spring
      • Valve Tappets
      • Rocker Arm And Shaft – Checking
      • Push Rod Alignment – Checking
    • CRANKSHAFT AND PISTONS
      • Piston And Connecting Rod Removal And Installation
      • Piston And Connecting Rod – Servicing
      • Cylinder Bore – Checking
      • Crankshaft And Bearings Removal
      • Crankshaft And Bearings Installation
      • Crankshaft And Bearings – Servicing
      • Honing And Boring
    • CAMSHAFT AND TIMING GEARS
      • Timing Gearcase Cover Removal And Installation
      • Timing Gears Backlash – Checking
      • Timing Gears Removal
      • Timing Gears Installation
      • Idler Gear And Camshaft Removal and Installation
      • Camshaft – Servicing
      • Idler Gear And Shaft – Servicing
  • SPECIFICATIONS
    • (3400, 3400XL) UTILITY VEHICLE SPECIFICATIONS
      • (3400) Machine Dimensions
      • (3400XL) Machine Dimensions
      • Performance
      • Controls
      • Engine
      • Electrical
      • Drive System
      • Fluid And Capacities
      • Tires
    • TORQUE SPECIFICATIONS FOR BOLTS
      • Torque For General SAE Bolts
      • Torque For General Metric Bolts
    • CONVERSIONS
      • Decimal And Millimeter Equivalent Chart
      • U.S. To Metric Conversion Chart
    • SERVICE TOOLS REQUIRED
      • Hydraulic Tools
      • Transmission / Clutch / Drive Tools
      • Engine Tools
      • HVAC Tools
  • ALPHABETICAL INDEX

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