$ 0
0
$ 0
0

Bobcat 773 Loader Service Manual (SN 509616001-509634999)

Format: PDF (Printable Document)

File Language: English

File Pages: 556

File Size: 20.63 MB (Speed Download Link)

Brand: Bobcat

Model: 773 Loader

Book No: 6900092

Serial No: SN 509616001-509634999

Type of Document: Service Manual

Categories: ,

$ 45

Share:

Bobcat 773 Loader Service Manual (SN 509616001-509634999)

A 773 is a good all-around skid steer for farm and yard work. Mine spends its time on pallet forks, moving gravel, cleaning pens, and pushing snow. When something quits, the service manual is what I grab so I'm not guessing on hydraulic tests, wiring, or how deep to tear in before Monday morning. That's what this manual is for.

What this manual helps you do

  • Diagnose no-move or weak-drive issues by checking the hydrostatic and charge circuits the way Bobcat lays it out
  • Trace electrical problems with proper wiring diagrams instead of chasing random wires under the seat
  • Follow step-by-step teardown and reassembly on the engine, pumps, drive motors, and cylinders
  • Set and verify adjustments on controls, linkages, chains, and the Bob-Tach so things run tight instead of sloppy
  • Replace seals, bearings, and hoses with the right order of operations so you don't have to redo the job

Who this is for

This manual is for a Bobcat 773 owner, small contractor, or mechanic working on a machine in the serial range listed. If you just want to know what the switches do or basic maintenance intervals, you want the operator's handbook instead.

FAQ

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

A: Most digital Bobcat manuals are searchable PDFs, and the wiring pages are usually clear enough to zoom in and read connector labels.

Q: Does this cover my exact 773?

A: It's written for 773 loaders in the serial range SN 509616001 to 509634999. If your plate falls outside that, this isn't the right one.

Q: Is this the right document if I'm doing real repairs, not just oil changes?

A: Yes, this is the workshop service manual, meant for actual troubleshooting and repair work, not routine greasing and checks.

Bottom line: If your 773's serial number is between 509616001 and 509634999 and you're doing your own repairs, this is the manual you want. If the serial doesn't match, skip it.

📘 Show Index

Table of Contents:

  • MAINTENANCE SAFETY
  • ALPHABETICAL INDEX
  • CONTENTS
    • FOREWORD
    • SAFETY INSTRUCTIONS
    • 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 BOBCAT LOADER
    • TOWING THE LOADER
    • LIFTING THE LOADER
      • Single Point Lift
    • STOPPING THE BOBCAT LOADER
    • LIFT ARM SUPPORT DEVICE
      • Installing Lift Arm Support Device
      • Removing Lift Arm Support Device
    • OPERATOR CAB
      • Description
      • Emergency Exit
      • Raising The Operator Cab
      • Lowering The Operator Cab
    • SEAT BAR RESTRAINT SYSTEM (Foot Pedals)
      • Description
      • Seat Bar Inspection
      • Seat Bar Maintenance
    • SEAT BAR RESTRAINT SYSTEM (Mechanical Hand Controls)
      • Description
      • Seat Bar Inspection
      • Seat Bar Maintenance
    • SEAT BAR RESTRAINT SYSTEM (Advanced Hand Controls)
      • Description
      • Seat Bar Inspection
      • Seat Bar Maintenance
    • AIR CLEANER SERVICE
      • Replacing Filter Element
    • FUEL SYSTEM
      • Fuel Specifications
      • Filling The Fuel Tank
      • Fuel Filter
      • Removing Air From The Fuel System
    • ENGINE LUBRICATION SYSTEM
      • Checking Engine Oil
      • Replacing Oil And Filter
    • ENGINE COOLING SYSTEM
      • Cleaning The Cooling System
      • Checking The Coolant Level
      • Replacing The Coolant
    • ALTERNATOR BELT
      • Adjustment
    • FAN GEARBOX
      • Checking And Maintaining
    • HYDRAULIC/HYDROSTATIC SYSTEM
      • Checking And Adding Fluid
      • Replacing Hydraulic/Hydrostatic Filter
      • Replacing Hydraulic Fluid
      • Breather Cap
    • SPARK ARRESTOR MUFFLER
      • Cleaning Procedure
    • TIRE MAINTENANCE
      • Wheel Nuts
      • Tire Rotation
      • Tire Mounting
    • FINAL DRIVE TRANSMISSION (CHAINCASE)
      • Checking And Adding Oil
      • Removing Oil From The Chaincase
    • DRIVE BELT
      • Adjusting The Drive Belt Equipped With The Fixed Drive Idler
      • Adjusting The Drive Belt Equipped With The Spring Loaded Drive Idler
      • Drive Belt Replacement
    • LUBRICATION OF THE BOBCAT LOADER
    • PIVOT PINS
    • BOB–TACH
      • Inspection And Maintenance
    • REMOTE START SWITCH
      • Procedure
  • HYDRAULIC SYSTEM
    • HYDRAULIC / HYDROSTATIC SCHEMATICS
    • TROUBLESHOOTING
    • HYDRAULIC SYSTEM INFORMATION
      • Tightening Procedures
    • LIFT CYLINDERS
      • Checking The Lift Cylinder(s) For Internal Leakage
      • Removal And Installation
    • TILT CYLINDERS
      • Checking The Tilt Cylinder For Internal Leakage
      • Removal And Installation
      • Rod End Seal Replacement
    • HYDRAULIC CYLINDER IDENTIFICATION
      • Lift Cylinder Components
      • Tilt Cylinder Components
    • HYDRAULIC CYLINDERS
      • Disassembly
      • Assembly
    • BICS™ VALVE (S/N 509640660 & Above, S/N 509616542 & Above)
      • Removal
      • Lift Arm By–Pass Orifice Disassembly
      • Check Valve Disassembly
      • Lock Valve Disassembly
      • BICS™ Valve Solenoid Disassembly
      • BICS™ Valve Solenoid Assembly
      • Lock Valve Assembly
      • Check Valve Assembly
      • Lift Arm By–Pass Orifice Assembly
      • Installation
    • CONTROL VALVE (S/N 509640660 & Above, S/N 509616542 & Above)
      • Removal And Installation
      • Identification Chart
      • Disassembly
      • Lift Base End Restrictor Disassembly
      • Load Check Valve Disassembly
      • Main Relief Valve Disassembly
      • Port Relief Valve Disassembly
      • Anti–Cavitation Valve Disassembly
      • Rubber Boot Disassembly
      • Lift Spool And Detent Disassembly
      • Tilt Spool And Centering Spring Disassembly
      • Auxiliary Spool Disassembly
      • Auxiliary Electric Solenoid Disassembly
      • Port–Auxiliary Section Disassembly
      • Cleaning And Inspection
      • Port–Auxiliary Section Assembly
      • Auxiliary Electric Solenoid Assembly
      • Auxiliary Spool Assembly
      • Tilt Spool And Centering Spring Assembly
      • Lift Spool And Detent Assembly
      • Rubber Boot Assembly
      • Anti–Cavitation Valve Assembly
      • Port Relief Valve Assembly
      • Main Relief Valve Assembly
      • Load Check Valve Assembly
      • Spool Seal Installation
    • CONTROL VALVE (S/N 509640659 & Below, S/N 509616541 & Below)
      • Removal And Installation
      • Identification Chart
      • Disassembly And Assembly
      • Load Check Valve
      • Main Relief Valve
      • Port Relief Valve
      • Anti–Cavitation Valve
      • Rubber Boot
      • Lift Spool Detent
      • Tilt Centering Spring
      • Auxiliary Spool
      • Auxiliary Electric Solenoid
      • Inspection
      • Identification And Installation Of Spool Seal
    • MAIN RELIEF VALVE
      • Checking
      • Adjustment
      • Removal and Installation
    • HYDRAULIC PUMP
      • Removal And Installation
      • Checking The Output Of The Hydraulic Pump
      • Disassembly And Assembly
      • Inspection
      • Identification
    • HYDRAULIC FILTER HOUSING
      • Removal And Installation
    • HYDRAULIC FLUID RESERVOIR
      • Removal And Installation
    • CONTROL PEDALS
      • Removal And Installation
      • Pedal Adjustment
    • CONTROL INTERLOCK LINKAGE (Pedal or Mechanical Hand)
      • Removal And Installation
      • Adjustment
    • LIFT LOCK BY–PASS VALVE
      • Removal And Installation (S/N 509640660 & Above S/N 509616542 & Above)
      • Disassembly And Assembly (S/N 509640660 & Above S/N 509616542 & Above)
      • Removal And Installation (S/N 509640659 & Below, S/N 509616541 & Below)
      • Disassembly And Assembly (S/N 509640659 & Below, S/N 509616541 & Below)
    • TILT LOCK VALVE
      • Removal And Installation (S/N 509640659 & Below, S/N 509616541 & Below)
      • Disassembly And Assembly (S/N 509640659 & Below, S/N 509616541 & Below)
  • HYDROSTATIC SYSTEM
    • TROUBLESHOOTING
    • HYDROSTATIC SYSTEM INFORMATION
      • Replenishing Valve Function
      • Checking Charge Pressure
    • CONTROL PANEL
      • Removal and Installation
      • Steering Shock Removal And Installation
      • Steering Shaft Removal And Installation
      • Steering Shaft Disassembly And Assembly
      • Steering Lever Removal And Installation
      • Rubber Boot Replacement
    • STEERING LINKAGE
      • Removal And Installation
      • Steering Linkage Adjustment
      • Steering Neutral Adjustment
    • HYDROSTATIC DRIVE MOTOR
      • Removal And Installation
      • Parts Identification – (S/N 509639898 & Below & S/N 509616504 & Below)
      • Disassembly And Assembly (S/N 509639898 & Below & S/N 509616504 & Below)
      • Inspection (S/N 509639898 & Below & S/N 509616504 & Below)
      • Timing the Hydrostatic Motor (S/N 509639898 & Below & S/N 509616504 & Below)
      • Parts Identification – (S/N 509639899 & Above & S/N 509616505 & Above)
      • Disassembly (S/N 509639899 & Above & S/N 509616505 & Above)
      • Assembly (S/N 509639899 & Above & S/N 509616505 & Above)
    • HYDROSTATIC PUMP
      • Removal And Installation
      • Identification
      • Disassembly And Assembly
      • Inspection
      • Swashplate Pre–Load
    • DRIVE BELT HOUSING
      • Removal And Installation
    • SPRING LOADED DRIVE BELT TENSIONER PULLEY
      • Removal And Installation
      • Identification
      • Disassembly
      • Assembly
    • FIXED DRIVE BELT TENSIONER PULLEY
      • Removal And Installation
      • Identification
      • Disassembly
      • Assembly
      • Checking Pulley End Play
    • OIL COOLER
      • Removal and Installation
  • DRIVE SYSTEM
    • PARKING BRAKE
      • Removal And Installation
      • Disassembly And Assembly
    • PARKING BRAKE DISC
      • Removal And Installation
    • TRACTION LOCK GUIDES
      • Disassembly
      • Assembly
    • CHAINCASE FLUID
      • Removing Oil From The Chaincase
    • CHAINCASE COVERS
      • Center Chaincase Cover Removal And Installation
      • Front Chaincase Cover Removal And Installation
      • Rear Chaincase Cover Removal And Installation
    • MOTOR CARRIER
      • Shaft Seal Replacement
      • Removal And Installation
      • Disassembly
      • Assembly
    • AXLE SEAL
      • Removal And Installation
    • AXLE, SPROCKET AND BEARINGS
      • Removal And Installation
    • DRIVE CHAIN
      • Removal And Installation
  • MAIN FRAME
    • SEAT BAR (W/GAS CYLINDER)
      • Removal And Installation
      • Assembly
      • Compressing The Gas Cylinder
    • SEAT BAR (W/COMPRESSION SPRINGS)
      • Removal And Installation
      • Assembling Components
      • Compression Spring Disassembly And Assembly
    • OPERATOR CAB GAS CYLINDER
      • Removal And Installation
      • Disassembly And Assembly
    • OPERATOR CAB
      • Removal And Installation
    • OPERATOR SEAT
      • Removal And Installation
    • BOB–TACH
      • Removal And Installation
      • Bob–Tach Lever And Wedge
      • Bob–Tach Stops
    • LIFT ARMS
      • Removal And Installation
    • LIFT ARM LINK
      • Removal And Installation
    • REAR GRILL
      • Removal And Installation
    • FUEL TANK
      • Removal And Installation
      • Fuel Level Sender
    • REAR DOOR
      • Removal And Installation (Two Piece Door)
      • Removal And Installation (One Piece Door)
      • Hood Removal And Installation (Two Piece Door)
      • Bumper Removal And Installation (Two Piece Door)
      • Door Latch Removal And Installation
      • Door Latch And Catch Adjustment
    • REAR LIGHTS
      • Rear Lights Removal and Installation (One Piece Door)
  • ELECTRICAL SYSTEM
    • ELECTRICAL SCHEMATICS
    • TROUBLESHOOTING
    • ELECTRICAL SYSTEM INFORMATION
      • Description
      • Fuse Location
    • BATTERY
      • Removal And Installation
      • Servicing The Battery
      • Using A Booster Battery (Jump Starting)
    • ALTERNATOR
      • Alternator Output Test
      • Rectifier (Diode) Test
      • Alternator Regulator Test
      • Removal And Installation
      • Adjusting The Alternator Belt
      • Disassembly And Inspection
      • Stator Continuity Test
      • Stator Ground Test
      • Rotor Continuity Test
      • Rotor Ground Test
      • Rectifier Continuity (Diode) Test
      • Assembly
    • STARTER
      • Removal And Installation
    • STARTER (DELCO REMY)
      • Checking the Starter
      • Parts Identification
      • Disassembly and Assembly
      • Cleaning and Inspection
    • STARTER (DENSO)
      • Parts Identification
      • Disassembly
      • Inspection And Repair
      • No Load Test
      • Assembly
    • STANDARD INSTRUMENT PANEL
      • Removal And Installation
    • FRONT LIGHTS
      • Removal And Installation
    • RELAY SWITCHES
      • Location
  • ENGINE SERVICE
    • TROUBLESHOOTING
    • ENGINE SPEED CONTROL
      • Removal And Installation
      • Disassembly
    • ENGINE MUFFLER
      • Removal And Installation
    • RADIATOR
      • Removal And Installation
    • BLOWER HOUSING/FAN GEARBOX
      • Removal And Installation
      • Tension Pulley Removal And Installation
      • Blower Fan Disassembly And Assembly
    • FAN GEARBOX
      • Identification
      • Disassembly
      • Assembly
      • Checking Backlash
    • AIR CLEANER
      • Removal And Installation
    • ENGINE
      • Removal And Installation
      • Engine Mount Replacement
    • FLYWHEEL
      • Removal And Installation
      • Flywheel Ring Gear
    • ENGINE COMPRESSION
      • Checking
    • GLOW PLUGS
      • Checking The Glow Plugs
      • Removal And Installation
    • FUEL INJECTION PUMP
      • Checking The Injection Pump
      • Adjusting Shut–Off Linkage
      • Removal And Installation
      • Timing The Injection Pump
    • FUEL INJECTION NOZZLES
      • Removal And Installation
      • Checking The Injector Nozzle
    • CYLINDER HEAD
      • Removal And Installation
      • Disassembly And Assembly
      • Servicing The Cylinder Head
      • Top Clearance
    • VALVE, VALVE SEAT AND GUIDE
      • Checking The Valve Guide
      • Reconditioning The Valve And Valve Seat
      • Valve Spring
    • VALVE CLEARANCE
      • Adjustment
    • ROCKER ARM AND SHAFT
      • Checking
    • TIMING GEARCASE COVER
      • Removal And Installation
    • IDLER GEAR AND CAMSHAFT
      • Removal And Installation
      • Servicing The Camshaft
      • Servicing The Idler Gear And Shaft
    • TIMING GEARS
      • Checking Backlash
    • FUEL CAMSHAFT
      • Removal And Installation
      • Governor
    • CRANKSHAFT GEAR
      • Removal And Installation
    • OIL PUMP
      • Removal And Installation
      • Oil Pump Service
      • Checking Engine Oil Pressure
      • Relief Valve
    • PISTON AND CONNECTING ROD
      • Removal And Installation
      • Servicing The Piston And Connecting Rod
      • Connecting Rod Alignment
    • CRANKSHAFT AND BEARINGS
      • Removal And Installation
      • Servicing The Crankshaft And Bearings
    • CYLINDER BORE
      • Checking The Cylinder Bore
    • WATER PUMP
      • Disassembly And Assembly
  • SYSTEMS ANALYSIS
    • BOBCAT INTERLOCK CONTROL SYSTEM (BICS™) (S/N 509648900 & Above) (S/N 509617300 & Above)
      • Inspecting The BICS™ Controller
      • nspecting Deactivation Of The Auxiliary Hydraulics System
      • Inspecting The Seat Bar Sensor (Engine RUNNING)
      • Inspecting The Traction Lock (Engine RUNNING)
      • Inspecting The Lift Arm By–Pass Control
      • Additional Inspection For Loaders With Advanced Hand Controls
      • Troubleshooting Chart
    • BOBCAT INTERLOCK CONTROL SYSTEM (BICS™) (S/N 509648899 & Below) (S/N 509617299 & Below)
      • Inspecting The BICS™ Controller (Engine STOPPED – Key ON)
      • Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED – Key ON)
      • Inspecting The Seat And Seat Bar Sensors (Engine Running)
      • nspecting The Traction Lock (Engine Running)
      • nspecting The Lift Arm By–Pass Control
      • Maintenance
      • Troubleshooting Chart
    • BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)
      • Troubleshooting Guide
        • BICS CONTROLLER
        • TRACTION LOCK
        • SEAT SENSOR
        • SEAT BAR SENSOR
    • SEAT SENSOR
      • Seat Sensor Test
      • Removal And Installation
      • BICS™ Controller Seat Sensor Circuit Test
    • BICS™ SYSTEM CONTROLLER
      • Removal And Installation
    • SEAT BAR SENSOR
      • Seat Bar Sensor Test
      • Removal And Installation
      • BICS™ Controller Seat Bar Sensor Circuit Test
    • TRACTION LOCK
      • Removal And Installation
    • BOSS® DIAGNOSTIC TOOL
      • Procedure
    • SENDER AND SENSOR
      • Service Checks
    • RPM SENSOR
      • Adjustment
    • MONITOR SERVICE CODES
    • TROUBLESHOOTING THE BOSS® & LCD DISPLAY
    • OPERATION SENSING SYSTEM UNIT
      • Removal And Installation
    • BOSS® INSTRUMENT PANEL
      • Removal And Installation
    • ELECTRICAL/HYDRAULIC CONTROLS REFERENCE
      • Controls Identification Chart
  • SPECIFICATIONS
    • SKID STEER LOADER SPECIFICATIONS
      • PERFORMANCE
      • CONTROLS
      • ENGINE
      • HYDRAULIC SYSTEM
      • ELECTRICAL
      • DRIVE SYSTEM
      • CAPACITIES
      • TIRES
      • FLOOR 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 Rod
      • Oil Pump
      • Crankshaft
      • Timing Gear
      • Thermostat
      • Crankshaft Re–Grind Data
      • Torque For General Metric Bolts
    • HYDRAULIC CONNECTION SPECIFICATIONS
      • O–ring Face Seal Connection
      • Straight Thread O–ring Fitting
      • Straight Thread O–ring Fitting
      • Flare Fitting
      • O–ring Flare Fitting
      • Port Seal Fitting
    • HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS
    • TORQUE SPECIFICATIONS FOR LOADER
    • STANDARD TORQUE SPECIFICATIONS FOR BOLTS
    • DECIMAL AND MILLIMETER EQUIVALENTS
    • U.S. TO METRIC CONVERSION
  • ADVANCE HAND CONTROL SYSTEM (AHC)
    • ADVANCED HAND CONTROL ELECTRICAL SCHEMATICS
    • AHC COMPONENTS
      • Identification
    • TROUBLESHOOTING (AHC)
    • ACTUATOR VOLTAGE TEST
      • Procedure
    • HANDLE CONTROL UNIT TEST
      • Procedure
    • BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)
    • ADVANCED HAND CONTROLS (AHC)
    • AHC/PWM CONTROLLER
      • Removal And Installation
      • Test
      • Description
      • Conditions
      • Troubleshooting Chart
      • Handle Testing
      • Solenoid Coil Testing
    • CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC)
      • Control Handle Unit Removal And Installation
      • Control Unit Connector
      • Switch Handle Removal And Installation
      • AHC Handle Removal And Installation
      • AHC Handle Disassembly And Assembly
      • AHC Steering Lever Removal And Installation
      • AHC Steering Lever Boot
      • Actuators Removal And Installation
      • Actuators Disassembly And Assembly
    • CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC) (W/PUSH BUTTON FLOAT)
      • Components Identification
      • Controller Connector And Wire Identification
      • AHC/PWM Controller Removal And Installation
      • Handle Sensor Removal And Installation
      • Handle Sensor Connector
      • Switch Handle Removal And Installation
      • Control Handle Removal And Installation
      • Control Handle Disassembly And Assembly
      • Control Lever Removal And Installation
      • Control Lever Boot
      • Actuators Disassembly And Assembly
    • BICS™ VALVE
      • Lift Arm By–Pass Orifice
      • Check Valve
      • Lock Valve
      • BICS™ Valve Solenoid
      • Removal And Installation
    • HYDRAULIC CONTROL VALVE
      • Removal And Installation
      • Identification Chart
      • Disassembly And Assembly
      • Load Check Valve
      • Lift Base End Restrictor
      • Main Relief Valve
      • Port Relief Valve (Lift)
      • Anti–Cavitation/Port Relief Valve
      • Port Relief Valve (Tilt)
      • Anti–Cavitation Valve
      • Rubber Boot
      • Lift And Tilt Spool
      • Inspection
      • Auxiliary Spool
      • Auxiliary Electrical Solenoid
      • Spool Seal Installation
      • H–Port Auxiliary Section
  • SERVICE MANUAL REVISIONS
    • 773–1
    • 773–2
    • 773–3
    • 773–4
    • 773-5

Bobcat Software

Bobcat PDF Manuals

Related Manuals

0
    0
    Your Cart
    Your cart is emptyReturn to Shop