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Bobcat 980 Loader Service Manual (SN 505311001-505399999)

Format: PDF (Printable Document)

File Language: English

File Pages: 314

File Size: 14.34 MB (Speed Download Link)

Brand: Bobcat

Model: 980 Loader

Book No: 6570341

Serial No: SN 505311001-505399999

Type of Document: Service Manual

Categories: ,

$ 45

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Bobcat 980 Loader Service Manual (SN 505311001-505399999)

The Bobcat 980 is an older, big-frame loader that still earns its keep in farm yards, gravel pits, and small contractor fleets. The people who reach for this service manual are the ones actually tearing into pumps, chasing down weak lift, or sorting out electrical gremlins, same as we do on older Cat or Deere loaders. They want torque specs, test ports, and step-by-step teardown so they don't guess their way through a job.

What this manual helps you do

  • Diagnose hydraulic issues by checking pressures, valve function, and drive components on the loader's hydraulic and hydrostatic systems
  • Trace and repair electrical problems using wiring diagrams and connector callouts instead of guessing with a test light
  • Follow step-by-step removal and installation for major components like pumps, motors, axles, cylinders, and loader arms
  • Rebuild and adjust linkages, brakes, steering, and attachment systems so the machine runs straight, lifts square, and locks attachments correctly
  • Set and verify adjustments after repairs, like control linkages and relief settings, so the loader behaves the way it should under load

Who this is for

This is for a shop mechanic, field tech, small contractor, farmer, or rental outfit running a Bobcat 980 within serial range 505311001 to 505399999. If you just need basic operating instructions or safety info, you want the operator's handbook instead, not this service manual.

FAQ

Q: Is this a searchable PDF and are the wiring diagrams readable?

A: Yes, this is a PDF manual, and in my experience these Bobcat scans are clear enough to zoom in on wiring diagrams and hydraulic schematics.

Q: How do I know if it fits my exact 980?

A: Check your machine's serial number. If it falls between 505311001 and 505399999, this is the right service manual series for your loader.

Q: Is this what I need for real repairs, or just basic maintenance?

A: This is the workshop-level service manual, meant for actual diagnostics, teardown, and reassembly, not just fluid changes or daily checks.

Bottom line: If your 980's serial number lands in that range and you plan to do real repair work instead of guessing, this is the manual you want.

📘 Show Index

Table of Contents:

  • MAINTENANCE SAFETY
  • CONTENTS
    • FOREWORD
    • SAFETY INSTRUCTIONS
      • Safety Is Your Responsibility
      • Before Operating The Bobcat Loader
      • Safe Operation Needs A Qualified Operator
    • FIRE PREVENTION
    • SERIAL NUMBER LOCATIONS
      • Loader Serial Number
      • Engine Serial Number
    • DELIVERY REPORT
    • BOBCAT LOADER IDENTIFICATION
  • PREVENTIVE MAINTENANCE
    • SERVICE SCHEDULE
    • LIFTING AND BLOCKING THE LOADER
      • Procedure
    • TRANSPORTING THE LOADER
      • Procedure
    • TOWING THE LOADER
      • Procedure
    • LIFT ARM STOP
      • Procedure
    • SKID PLATE
      • Removal And Installation
    • OPERATOR CAB
      • Raising The Operator Cab
      • Lowering The Operator cab
    • SEAT BAR SYSTEM
      • Description
      • Seat Bar Inspection
      • Seat Bar Maintenance
    • USING AN EXTRA BATTERY (JUMP STARTING)
      • Procedure
  • HYDRAULIC SYSTEM
    • HYDRAULIC/HYDROSTATIC SCHEMATICS
    • TROUBLESHOOTING
    • HYDRAULIC SYSTEM INFORMATION
      • Flare Connections
      • Straight Thread O-Ring Fitting
      • Tubelines And Hoses
    • LIFT CYLINDER
      • Checking The Lift cylinder
      • Removal And Installation
      • Lift Cylinder Repair
    • TILT CYLINDER
      • Checking The Tilt Cylinder
      • Removal And Installation
      • Repair Of TheTilt cylinder
      • Tilt Cylinder Hoses
      • Tilt Cylinder Tubelines
    • CONTROL VALVE
      • Checking The Tilt Circuit Relief Valve
      • Checking The Lift Circuit Relief Valve
      • Main Relief Valves Removal And Installation
      • Removal And Installation
      • Disassembly And Assembly
      • Quad-Ring Replacement
    • HYDRAULIC PUMP
      • Removal And Installation
      • Disassembly
      • Inspection
      • Assembly
      • Replacement Of The Shaft Seal
    • HYDRAULIC RESERVOIR
      • Removal And Installation
      • Hydraulic Reservoir Filter
    • HYDRAULIC PRIMARY FILTER
      • Replacement Of The Hydraulic Primary Filter
      • Replacement Of The Filter Housing
    • CONTROL PEDALS
      • Removal And Installation
      • Pedal Lock Linkage
  • HYDROSTATIC SYSTEM
    • TROUBLESHOOTING
    • STEERING CONTROLS
      • Adjustment
      • Removal And Installation
      • Disassembly And Assembly
    • HYDROSTATIC PUMP
      • Adjustment Of The Displacement Control Valve
      • Checking Charge Pressure
      • Removal And Installation
      • Inspection
      • Charge Pump
    • HYDROSTATIC MOTOR
      • Removal And Installation
      • Disassembly And Assembly
      • Inspection
    • OIL COOLER
      • Removal And Installation
  • DRIVE SYSTEM
    • BRAKE/CLUTCH
      • Adjustment
      • Removal And Installation Of The Clutch
      • Inspection Of The Clutch
    • TRANSFER CASE
      • Checking Chain Tension
      • Removal And Installation
      • Disassembly
      • Inspection
      • Assembly
    • REDUCTION GEARCASE AND BRAKE
      • Removal And Installation
      • Disassembly And Assembly
    • FINAL DRIVE CHAIN
      • Adjustment
      • Removal
      • Installation
    • PLANETARY AXLE
      • Removal And Installation
      • Disassembly
      • Assembly
    • FINAL DRIVE IDLER
      • Removal And Installation
      • Disassembly And Assembly
  • MAIN FRAME
    • OPERATOR CAB
      • Removal And Installation
    • OPERATOR CAB TILT CONTROL
      • Removal And Installation
    • OPERATOR CAB TILT CONTROL CYLINDER
      • Removal And Installation
      • Disassembly And Assembly
    • REAR DOOR
      • Removal And Installation
    • LIFT ARMS
      • Removal And Installation
    • FUEL TANK
      • Removal And Installation
    • SIDE FENDER
      • Removal And Installation
  • ELECTRICAL SYSTEM
    • ELECTRICAL SCHEMATICS
    • ELECTRICAL SYSTEM INFORMATION
      • Description
    • TROUBLESHOOTING
    • BATTERY
      • Checking The Battery
    • ALTERNATOR
      • Checking The Alternator Output
      • Checking The Alternator Regulator
      • Removal And Installation
      • Disassembly And Assembly
    • STARTER
      • Checking The Starter
      • Removal And Installation
      • Disassembly And Assembly
      • Cleaning And Inspection
      • Replacing The Brushes
  • ENGINE SERVICE
    • TROUBLESHOOTING
    • VALVE CLEARANCE
      • Adjustment
    • FUEL FILTERS
      • Fuel Filter Elements
      • Filter Housing
    • FUEL LINES
      • Removal And Installation
    • REMOVING AIR FROM THE FUEL SYSTEM
      • Procedure
    • FUEL LIFT PUMP
      • Removal And Installation
      • Inspection
    • FUEL INJECTION PUMP
      • Removal
      • Installation
      • Shaft Seal Replacement
      • Shutdown Solenoid Replacement
      • Fuel Inlet Adapter & Sealing Washer Replacement
    • TIMING PIN
      • Timing Pin Replacement
      • Timing Pin Alignment
    • ENGINE COMPRESSION
      • Checking
    • FUEL INJECTORS
      • Removal And Installation
      • Disassembly
      • Inspection
      • Assembly
    • TURBOCHARGER AND EXHAUST MANIFOLD
      • Removal
      • Disassembly
      • Inspection
      • Assembling
      • Installation
    • MUFFLER
      • Removal And Installation
    • RADIATOR
      • Removal And Installation
    • ENGINE
      • Removal And Installation
    • INTAKE MANIFOLD COVER PLATE
      • Removal
      • Installation
    • ROCKER ARM AND PUSH RODS
      • Removal
      • Disassembly
      • Assembly
      • Installation
    • CYLINDER HEAD
      • Removal
      • Checking Cylinder Head For Flatness
      • Installation
    • VALVES, GUIDES AND SPRINGS
      • Removal
      • Cleaning
      • Valve Guide
      • Valve Grinding
      • Seat Grinding
      • Valve Springs
      • Assembly
    • PISTON AND CONNECTING ROD
      • Removal
      • Disassembly
      • Inspection
      • Assembly
      • Installation
    • CRANKSHAFT AND MAIN BEARINGS
      • Removal
      • Inspection
      • Crankshaft Gear
      • Vibration Damper
      • Installation
      • Crankshaft End Play
    • CYLINDER BLOCK
      • Cylinder Block Inspection
      • Cam Bushing Replacement
      • Cylinder Liner Honing
      • Cleaning The Cylinder Block
    • TIMING GEAR COVER
      • Removal
      • Installation
    • FUEL INJECTION PUMP GEAR
      • Removal And Installation
      • Gear Backlash
    • CAMSHAFT AND GEAR
      • Gear Backlash
      • Removal
      • Inspection
      • Gear Replacement
      • Tappet And Push Rod Inspection
      • Installation
    • OIL PAN AND REAR SEAL
      • Removal
      • Rear Seal Installation
      • Oil Pan Installation
    • OIL PUMP
      • Gear Backlash
      • Removal
      • Inspection
      • Installation
    • TIMING GEAR HOUSING
      • Removal
      • Installation
    • OIL COOLER
      • Removal
      • Inspection
      • Pressure Regulating Valve
      • Filter By-Pass Valve
      • Installation
    • FAN HUB
      • Removal And Installation
      • Disassembly
      • Assembly
    • WATER PUMP
      • Removal And Installation
      • Inspection
    • BELT TENSIONER
      • Removal And Installation
      • Disassembly And Assembly
    • THERMOSTAT
      • Removal
      • Inspection
      • Installation
    • ENGINE RUN-IN
      • Procedure
    • BALANCER
      • Checking The Balancer
      • Removing The Balancer
      • Disassembly Of The Balancer
      • Assembly Of The Balancer
      • Installing The Balancer
  • TECHNICAL DATA
    • LOADER SPECIFICATIONS
      • OPERATIONS AND PERFORMANCE
      • ENGINE
      • LOADER HYDRAULICS
      • ELECTRICAL
      • DRIVE SYSTEM
      • CAPACITIES
      • TIRES
    • ENGINE SPECIFICATIONS
      • Cylinder Head
      • Valves
      • Rocker Arm
      • Tappet
      • Piston
      • Connecting Rod
      • Crankshaft
      • Balancer
      • Camshaft
      • Engine Block
      • Fuel Injection Pump
      • Fuel Injectors
      • Turbocharger
      • Exhaust Manifold
      • Oil Pump
      • Oil Cooler
      • Thermostat
      • Engine Torque
      • Blowby Measurement
      • Blowby Conversion Chart
    • HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS
    • DECIMAL AND MILLIMETER EQUIVALENTS
    • U.S. TO METRIC CONVERSION
    • STANDARD TORQUE SPECIFICATIONS FOR BOLTS
  • SERVICE MANUAL REVISIONS
    • 980-1
    • 980-2
    • 980-3
    • 980-4
    • 980-5
    • 980-6

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