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Bobcat MT85 Loader Mini Track Service Manual (SN B3TR11001-B3TR99999)

Format: PDF (Printable Document)

File Language: English

File Pages: 405

File Size: 11.61 MB (Speed Download Link)

Brand: Bobcat

Model: MT85 Loader Mini Track

Book No: 7274811

Serial No: SN B3TR11001-B3TR99999

Type of Document: Service Manual

Categories: ,

$ 45

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Bobcat MT85 Loader Mini Track Service Manual (SN B3TR11001-B3TR99999)

Out on a job, the MT85 is your little pack mule: grading walks, feeding pallets into tight spots, running augers and breakers where a skid won't fit. The service manual is what you grab when the machine quits paying the bills and you'd rather turn wrenches than wait on a dealer. Around my shop, that means anything from chasing a dead travel motor to sorting an electrical gremlin or resealing a cylinder the right way the first time.

What this manual helps you do

  • Diagnose no-start, low-power, or smoking issues on the small diesel engine before you start throwing parts at it
  • Trace and troubleshoot hydraulic and hydrostatic drive problems, then check pressures with the right ports and test steps
  • Follow teardown and reassembly procedures on drive motors, cylinders, valves, and major mechanical components
  • Check, adjust, and set things like drive chain tension, controls, linkages, and safety interlocks so the loader runs straight and safe
  • Verify and repair electrical and wiring issues using proper diagrams, connector callouts, and step-by-step test routines

Who this is for

This manual is for you if you own or maintain an MT85 loader mini track with serial number B3TR11001 through B3TR99999 and you actually turn the wrenches, whether you're a small contractor, rental yard, or owner-operator. If you just need basic controls, capacities, or safety info, you want the operator's handbook instead, not this.

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 search text; wiring diagrams are laid out so you can zoom in to read pin numbers and wire colors.

Q: How do I know it fits my exact MT85?

A: Check your serial plate; if it falls between B3TR11001 and B3TR99999, this is the right service manual for your machine.

Q: Is this what I need for real repairs, not just maintenance?

A: Yes, this is the workshop-level service manual, meant for diagnostics, teardown, and repair, not just daily checks.

If your MT85 serial number is in that B3TR11001-B3TR99999 window and you plan to fix it yourself, this is the manual you want. If it's outside that range, skip this one.

📘 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
      • Mini Track Loader Serial Number
      • Engine Serial Number
    • DELIVERY REPORT
    • MINI TRACK LOADER IDENTIFICATION
  • SAFETY AND MAINTENANCE
    • LIFTING AND BLOCKING THE MINI LOADER
      • Procedure
      • Four Point Lift
    • LIFT ARM SUPPORT
      • Installing
      • Removing
    • TRANSPORTING THE MINI LOADER ON A TRAILER
      • Loading And Unloading
      • Fastening
    • TOWING THE MINI LOADER
      • Procedure
    • SERVICE SCHEDULE
      • Maintenance Intervals
    • AIR CLEANER SERVICE
      • Replacing Filter Elements
    • ENGINE COOLING SYSTEM
      • Cleaning
      • Checking Level
      • Removing And Replacing Coolant
    • FUEL SYSTEM
      • Fuel Specifications
      • Biodiesel Blend Fuel
      • Filling The Fuel Tank
      • Fuel Filter
      • Removing Air From The Fuel System
    • ENGINE LUBRICATION SYSTEM
      • Checking And Adding Engine Oil
      • Engine Oil Chart
      • Removing And Replacing Oil And Filter
    • HYDRAULIC / HYDROSTATIC SYSTEM
      • Checking And Adding Fluid
      • Hydraulic / Hydrostatic Fluid Chart
      • Removing And Replacing Hydraulic / Hydrostatic Filter
      • Removing And Replacing Hydraulic Fluid
      • Hydraulic Reservoir Breather
    • BOB-TACH
      • Inspection And Maintenance
    • COMMON INDUSTRY INTERFACE
      • Inspection And Maintenance
    • LUBRICATING THE MINI LOADER
      • Lubrication Locations
      • Parking Brake Lubrication
      • Track Roller And Idler Lubrication
    • SPARK ARRESTER MUFFLER
      • Cleaning Procedure
    • PIVOT PINS
      • Inspection And Maintenance
    • LIFT AND TILT FUNCTION LOCKOUTS
      • Inspection
    • LIFT ARM BYPASS Control
      • Operation
      • Inspection
    • NEUTRAL START INTERLOCKS
      • Inspecting Traction Drive Interlock
      • Inspecting Auxiliary Hydraulic Interlock
    • AUXILIARY HYDRAULIC CONTROL SYSTEM
      • Inspecting The Continuous Flow Shutoff Pedal
  • HYDRAULIC SYSTEM
    • HYDRAULIC SYSTEM INFORMATION
      • Glossary Of Hydraulic / Hydrostatic Symbols
      • Troubleshooting
    • CYLINDER (LIFT)
      • Testing
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • CYLINDER (TILT)
      • Testing
      • Removal And Installation
      • Rod End Pivot Pin Bushing And Seal Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • MAIN RELIEF VALVE
      • Description
      • Testing
      • Removal And Installation
    • PORT RELIEF VALVES
      • Testing (Lift)
      • Removal And Installation (Lift)
      • Testing (Tilt)
      • Removal And Installation (Tilt)
    • HYDRAULIC CONTROL VALVE
      • Description
      • Removal And Installation
      • Identification Chart
      • Disassembly And Assembly
    • HYDRAULIC PUMP
      • Direct Pump Testing
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • HYDRAULIC / HYDROSTATIC FILTER
      • Description
      • Housing Removal And Installation
    • HYDRAULIC FLUID RESERVOIR
      • Description
      • Removal And Installation
    • OIL COOLER
      • Description
      • Removal And Installation
  • HYDROSTATIC SYSTEM
    • HYDROSTATIC SYSTEM INFORMATION
      • Troubleshooting
      • Description
    • HYDROSTATIC MOTOR
      • Description
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Inspection
      • Assembly
    • CHARGE PRESSURE
      • Description
      • Testing
      • Sender Removal And Installation
      • Replacing Poppet Assembly
    • HYDROSTATIC PUMP
      • Description
      • Removal And Installation
      • Replenishing / High Pressure Relief Valve Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • DRIVE BELT
      • Description
      • Shield Removal And Installation
      • Adjusting
      • Alignment
      • Belt Removal And Installation
      • Tensioner Pulley Removal And Installation
    • HYDROSTATIC CONTROLS
      • Pump Controls Disassembly And Assembly (Earlier Models)
      • Pump Controls Disassembly And Assembly (Later Models)
      • Pump Controls Disassembly And Assembly (All Models)
      • Pump Controls Adjustment
      • Travel Control Lever Adjustment (Earlier Models)
      • Travel Control Lever Adjustment (Later Models)
      • Full Forward Travel Adjustment
      • Steering Drift Adjustment
  • DRIVE SYSTEM
    • PARKING BRAKE (EARLIER MODELS)
      • Description
      • Handle Removal And Installation
      • Cable Removal And Installation
      • Cable Adjustment
      • Linkage Assembly Removal And Assembly
      • Brake Pin Lubrication
    • PARKING BRAKE (LATER MODELS)
      • Description
      • Handle Removal And Installation
      • Cable Removal And Installation
      • Cable Adjustment
      • Linkage Assembly Removal And Assembly
      • Brake Pin Lubrication
    • TRACK CARRIAGE COMPONENTS
      • Description
      • Checking Tension
      • Adjusting Tension
      • Track Removal And Installation
      • Idler (Front) Removal And Installation
      • Idler (Front) Disassembly And Assembly
      • Idler (Rear) Removal And Installation
      • Idler (Rear) Parts Identification
      • Idler (Rear) Disassembly And Assembly
      • Tensioner Disassembly And Assembly
      • Roller Removal And Installation
      • Roller Parts Identification
      • Roller Disassembly And Assembly
      • Carriage Removal And Installation
      • Track Damage Identification
  • MAINFRAME
    • BOB-TACH
      • Removal And Installation
      • Seal Removal And Installation
      • Lever And Wedge Disassembly And Assembly
    • COMMON INDUSTRY INTERFACE (CII)
      • CII – Removal And Installation
      • CII – Seal Removal And Installation
      • CII – Lever And Wedge Disassembly And Assembly
    • LIFT ARMS
      • Removal And Installation
    • REAR DOOR
      • Removal And Installation
      • Latch Removal And Installation
      • Bumper (Adjusting)
    • FUEL TANK
      • Removal And Installation
      • Fuel Level Sender Removal And Installation
    • INSTRUMENT PANEL
      • Removal And Installation
    • GRAB BAR
      • Removal And Installation
    • HOOD
      • Removal And Installation
      • Disassembly And Assembly
      • Latch Removal And Installation
      • Striker (Adjusting)
    • BOTTOM ACCESS PANEL
      • Removal And Installation
    • OPERATOR PLATFORM
      • Removal And Installation
      • Operator Cushion Removal And Installation
      • Continuous Flow Shutoff System Pedal Removal And Installation
  • ELECTRICAL SYSTEM AND ANALYSIS
    • ELECTRICAL SCHEMATICS
    • ELECTRICAL SYSTEM INFORMATION
      • Glossary Of Electrical Symbols
      • Description
      • Fuse And Relay Location / Identification
      • Troubleshooting
      • Solenoid Testing
    • BATTERY
      • Battery Maintenance
      • 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
      • Description
      • Alternator Output Test
      • Full Field Test
      • Alternator Voltage Testing
      • Removal And Installation
      • Parts Identification
    • STARTER
      • Testing
      • Removal And Installation
      • Parts Identification
    • INSTRUMENT PANEL
      • Component Removal And Installation
    • NEUTRAL START SENSOR
      • Description
      • Removal And Installation
    • CONTINOUS FLOW SHUTOFF SYSTEM SENSOR
      • Description
      • Removal And Installation
      • Adjustment
      • Testing
    • ELECTRICAL / HYDRAULIC CONTROLS
      • Identification Chart
    • ELECTRIC COOLING FAN
      • Description
      • Removal And Installation
  • ENGINE SERVICE
    • ENGINE INFORMATION
      • Description
      • Specifications (Kubota D902-EB)
      • Torque Values
      • Troubleshooting
      • Engine Removal And Installation
      • Engine Mount Replacement
      • Compression – Checking
    • ENGINE SPEED CONTROL
      • Removal And Installation
      • Disassembly And Assembly
      • Cable Removal And Installation
    • MUFFLER
      • Removal And Installation
    • AIR CLEANER
      • Housing Removal And Installation
    • ENGINE COOLING SYSTEM
      • Radiator Removal And Installation
      • Fan Blade Removal And Installation
      • Water Pump Removal And Installation
      • Water Pump Disassembly And Assembly
      • Thermostat Housing Removal And Installation
    • LUBRICATION SYSTEM
      • Oil Pan Removal And Installation
      • Oil Pump Removal And Installation
      • Oil Pump Inspection
      • Engine Oil Pressure – Testing
    • FUEL SYSTEM
      • Fuel Camshaft Removal And Installation
      • Fuel Camshaft Governor Disassembly And Assembly
      • Fuel Shutoff Solenoid – Checking
      • Fuel Shutoff Solenoid – Installation
      • Fuel Injection Pump Removal And Installation
      • Fuel Injection Pump – Timing
      • Fuel Injector Removal And Installation
      • Fuel Injector Nozzle Pressure – Checking
      • Nozzle Spray Condition
      • Valve Seat Tightness
    • CYLINDER HEAD
      • Glow Plugs – Testing
      • Glow Plugs Removal And Installation
      • Valve Clearance Adjustment
      • Valve Timing – Checking
      • 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
      • Valve Tappets
      • Rocker Arm And Shaft – Checking
    • CRANKSHAFT AND PISTONS
      • Piston And Connecting Rod Removal And Installation
      • Piston And Connecting Rod – Servicing
      • Cylinder Bore – Checking
      • 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 – Checking
      • Idler Gear And Shaft Removal And Installation
      • Camshaft – Servicing
      • Idler Gear And Shaft Servicing
    • HYDRAULIC GEAR PUMP MOUNTING BRACKET
      • Removal And Installation
      • Hydraulic Gear Pump Coupler Removal And Installation
    • FLYWHEEL AND ENGINE MOUNTING BRACKET
      • Flywheel Removal And Installation
      • Ring Gear Removal And Installation
      • Engine Mounting Bracket Removal And Installation
  • SPECIFICATIONS
    • (MT85) MINI TRACK LOADER SPECIFICATIONS
      • Dimensions (Narrow Track)
      • Dimensions (Wide Track)
      • Performance
      • Controls
      • Engine
      • Hydraulic System
      • Electrical
      • Drive System
      • Capacities
      • Tracks
      • Ground Pressure
    • (MT85) TECHNICAL SERVICE GUIDE SPECIFICATIONS
      • Engine
      • Engine Torques
      • Cooling System
      • Electrical
      • Loader Torques
      • Hydraulic System
      • Fuel Consumption
    • TORQUE SPECIFICATIONS 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
      • Port Seal Fitting
    • HYDRAULIC FLUID SPECIFICATIONS
      • Specifications
    • CONVERSIONS
      • Decimal And Millimeter Equivalent Chart
      • U.S. To Metric Conversion Chart
    • SERVICE TOOLS REQUIRED
      • Hydraulic Tools
      • Engine Tools
  • ALPHABETICAL INDEX

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