Bobcat 873 Skid-Steer Loader Service Manual – 6724280 (7-10)

(S/N: 514114999 & Below) – (S/N: 514212999 & Below)
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This workshop repair service manual PDF download for the 873 Bobcat Skid-Steer Loader 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 Loader 873
(S/N: 514114999 & Below)
(S/N: 514212999 & Below)

TABLE OF CONTENTS :

FOREWORD
SAFETY INSTRUCTIONS
SERIAL NUMBER LOCATIONS
DELIVERY REPORT
BOBCAT LOADER IDENTIFICATION
PREVENTIVE MAINTENANCE
HYDRAULIC SYSTEM
HYDROSTATIC SYSTEM
DRIVE SYSTEM
MAIN FRAME
ELECTRICAL SYSTEM
ENGINE SERVICE
SYSTEM ANALYSIS
SPECIFICATIONS
SERVICE MANUAL REVISIONS

MANUAL SPECIFICATION :

File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
P/N : 6724280 (7-10)
Total Pages : 508

This 873 Bobcat Loader 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
SERIAL NUMBER LOCATIONS
LOADER SERIAL NUMBER
ENGINE SERIAL NUMBER
DELIVERY REPORT
BOBCAT LOADER IDENTIFICATION
OPTIONS AND ACCESSORIES

PREVENTIVE MAINTENANCE
SERVICE SCHEDULE
LIFTING AND BLOCKING THE LOADER
Procedure
TRANSPORTING THE LOADER
Procedure
TOWING THE LOADER
Procedure
STOPPING THE BOBCAT LOADER
Procedure
LIFT ARM SUPPORT DEVICE
To Install The Lift Arm Support Device
To Remove The Lift Arm Support Device
OPERATOR CAB
Description
Raising The Operator Cab
Lowering The Operator Cab
Emergency Exit
SEAT BAR RESTRAINT SYSTEM
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 Cooling System (S/N 514111516 – 514114999)
Cleaning The Cooling System (S/N 514111515 & Below)
ALTERNATOR BELT
Adjusting The Alternator Belt
HYDRAULIC/HYDROSTATIC SYSTEM
Checking And Adding Fluid
Hydraulic/Hydrostatic Filter Replacement
Replacing Hydraulic Fluid
TIRE MAINTENANCE
Wheel Nuts
Tire Rotation
Tire Mounting
FINAL DRIVE TRANSMISSION (CHAINCASE)
Checking And Adding Oil
FAN GEARBOX
Checking And Maintaining
LUBRICATING THE LOADER
Procedure
REMOTE START SWITCH
Procedure

HYDRAULIC SYSTEM
HYDRAULIC / HYDROSTATIC SCHEMATICS
TROUBLESHOOTING
HYDRAULIC SYSTEM INFORMATION
Flare Connections
O–ring Face Seal Connection
Straight Thread O–ring Fitting
Tubelines And Hoses
LIFT CYLINDER(S)
Checking The Lift Cylinder(s)
Removal And Installation
TILT CYLINDER(S)
Checking The Tilt Cylinder(s)
Removal And Installation
HYDRAULIC CYLINDER
Lift Cylinder Identification
Tilt Cylinder Identification
Disassembly
Assembly
MAIN RELIEF VALVE
Checking The Main Relief Valve
Checking The Main Relief Valve Without Auxiliaries
Removal And Installation
HYDRAULIC CONTROL VALVE
Removal And Installation
Identification Chart
Disassembly And Assembly
Load Check Valve
Main Relief Valve
Port Relief Valve
Anti–Cavitation Valve
Rubber Boot
Lift Spool And Detent
Tilt Spool And Centering Spring
Auxiliary Spool
Auxiliary Electric Solenoid
H Port – Auxiliary Section
Base End Restrictor
Inspection
Spool Seal Installation
HYDRAULIC PUMP
Checking The Output Of The Pump
Removal And Installation
Parts Identification
Disassembly
Inspection
Assembly
HYDRAULIC FLUID RESERVOIR
Draining The Fluid Reservoir
Removal And Installation
HYDROSTATIC FILTER HOUSING
Removal And Installation
HYDRAULIC FILTER HOUSING
Removal And Installation
HYDRAULIC/HYDROSTATIC FILTER HOUSING BRACKET
Removal And Installation
CONTROL PEDALS
Removal And Installation
Pedal Adjustment
PEDAL INTERLOCK LINKAGE
Removal And Installation
Pedal Interlock Linkage Adjustment
FRONT SIDE PANEL
Removal And Installation
REAR AUXILIARY DIVERTER
Disassembly
Inspection
Solenoid Testing
Assembly

HYDROSTATIC SYSTEM
TROUBLESHOOTING
HYDROSTATIC SYSTEM INFORMATION
Replenishing Valve Function
FRONT PANEL
Removal And Installation
STEERING LEVERS
Disassembly And Assembly
Pre–Adjustment Checks
Adjusting Lever Freeplay
Adjusting The Wheel RPM Forward Compared To Reverse Travel
Adjusting The Steering Neutral Setting
Adjusting The Wheel RPM Left Compared To Right Side
HYDROSTATIC MOTOR
Removal And Installation
Parts Identification
Disassembly
Inspection
Assembly
MOTOR CARRIER
Removal And Installation
Parts Identification
Disassembly
Assembly
HYDROSTATIC PUMP
Removal And Installation
Replenishing/High Pressure Relief Valve
Parts Identification
Hydraulic Pump Removal
Hydrostatic Pump Separation
Charge Pump Disassembly
Disassembly
Inspection
Assembly
Charge Pump Assembly
Hydrostatic Pump Connection
Hydraulic Pump Installation
Hydrostatic Pump Neutral Adjustment
DRIVE BELT SHIELD
Removal And Installation
DRIVE BELT
Adjusting The Drive Belt
Replacing The Drive Belt
DRIVE BELT TENSIONER PULLEY
Removal And Installation
Tension Spring
OIL COOLER
Removal And Installation (*S/N 514111516 – 514114999) (*Also S/N 514111504)
Removal And Installation (S/N 514111515 & Below)

DRIVE SYSTEM
BRAKE PEDAL
Removal And Installation
Disassembly And Assembly
BRAKE DISC
Removal And Installation
Removal And Installation (New Style Disc)
Removal And Installation (Old Style Disc)
FRONT CHAINCASE COVER
Removal And Installation
REAR CHAINCASE COVER
Removal And Installation
AXLE SEAL
Removal And Installation
AXLE, BEARINGS AND SPROCKET
Removal And Installation
DRIVE CHAIN
Removal And Installation
Removing The Fluid From The Chaincase

MAIN FRAME
SEAT BAR (W/GAS SPRING)
Removal And Installation
Assembly
Compressing The Gas Cylinder
SEAT BAR (W/COMPRESSION SPRING)
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
Pivot Pin Bushing And Seal Replacement
LIFT ARM STABILIZER BAR
Removal And Installation
LIFT ARM LINK
Removal And Installation
LIFT ARMS
Removal And Installation
REAR GRILL
Removal And Installation
REAR DOOR
Removal And Installation
Hood Removal And Installation
Bumper Removal And Installation
Door Latch Removal And Installation
Door Latch And Catch Adjustment
FUEL TANK
Removal And Installation
Fuel Level Sender
Inlet Screen

ELECTRICAL SYSTEM
ELECTRICAL SCHEMATICS
TROUBLESHOOTING
ELECTRICAL SYSTEM INFORMATION
Description
Fuse Location
BATTERY
Removal and Installation
Servicing the Electrical System
Using A Booster Battery (Jump Starting)
ALTERNATOR
Alternator Output Test
Rectifier (Diode) Test
Alternator Regulator Test
Removal and Installation
Disassembly
Stator Continuity Test
Stator Ground Test
Rotor Continuity Test
Rotor Ground Test
Rectifier Continuity (Diode) Test
Assembly
STARTER
Removal and Installation
Parts Identification
Disassembly and Assembly
External Pinion
Inspection and Repair
Magnetic Switch Test
No Load Test
STANDARD INSTRUMENT PANEL
Removal and Installation
FRONT LIGHTS
Removal and Installation
RELAY SWITCHES
Location

ENGINE SERVICE
TROUBLESHOOTING
ENGINE SPEED CONTROL
Removal And Installation
Speed Control Cable
Speed Control Linkage
ENGINE MUFFLER
Removal And Installation
AIR CLEANER HOUSING
Removal And Installation
BLOWER HOUSING/FAN GEARBOX
Removal And Installation
FAN DRIVE TENSION PULLEY
Removal And Installation
BLOWER FAN
Removal And Installation
FAN GEARBOX
Parts Identification
Disassembly
Assembly
Checking Backlash
ENGINE/HYDROSTATIC PUMP ASSEMBLY
Removal And Installation
ENGINE MOUNTS
Replacement
ENGINE
Removal And Installation
FLYWHEEL
Removal And Installation
FLYWHEEL HOUSING
Removal And Installation
GLOW PLUG
Checking The Glow Plug
VALVE CLEARANCE
Adjustment
FUEL INJECTION PUMP
Description
Removal
Installation
FUEL INJECTOR
Removal And Installation
Checking
Disassembly
Assembly
TIMING BELT
Inspection
Removal
Installation
Belt Replacement In Loader
VALVE TIMING
Checking
DEUTZ ENGINE TOOLS
Identification Chart
RECONDITIONING THE ENGINE
Disassembly
Assembly
CYLINDER LINERS
Checking The Cylinder Liners
CAMSHAFT BEARINGS
Checking
Removal And Installation
CONTROL ROD GUIDE BUSHING
Removal
Installation
REAR COVER SEAL
Removal And Installation
CRANKSHAFT
Checking The Crankshaft
CONNECTING ROD
Checking The Connecting Rod
PISTON AND PISTON PIN
Checking The Piston
Checking Piston Pin
Installing Piston Rings
CYLINDER HEAD
Disassembly
Checking The Valves
Checking Valve Seats
Valve Spring
Assembly
ROCKER ARM AND BRACKET
Checking
FRONT COVER
Disassembly
Assembly
TURBOCHARGER
Removal And Installation
Disassembly
Inspection
Assembly
POSITIVE CRANKCASE VENTILATION SYSTEM
Description
Inspection
Module Removal And Installation
OIL COOLER
Removal and Installation
CRANKSHAFT GEAR MOUNTING BOLT
Torque Procedure

SYSTEMS ANALYSIS
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)
Inspecting The BICS™ Controller (Engine STOPPED– Key ON)
nspecting Deactivation Of The Auxiliary HydraulicsSystem (Engine STOPPED – Key ON)
Inspecting The Seat And Seat Bar Sensors (Engine RUNNING)
Inspecting The Traction Lock (Engine RUNNING)
Inspecting The Lift Arm By–Pass Control
Maintenance
Troubleshooting Chart
Troubleshooting Guide
BICS SYSTEM CONTROLLER
TRACTION LOCK
SEAT SENSOR
SEAT BAR SENSOR
LIFT LOCK BY–PASS VALVE
BICS™ SYSTEM CONTROLLER
Removal And Installation
Controller Test
SEAT BAR SENSOR
Removal And Installation
Seat Bar Sensor Test
SEAT SENSOR
Removal And Installation
Seat Sensor Test
TRACTION LOCK
Removal And Installation
LIFT LOCK BY–PASS VALVE
Removal And Installation
Disassembly And Assembly
TILT LOCK VALVE
Removal And Installation (S/N 514111092 & Below)
Removal And Installation (S/N 514111093 – 514114999)
Disassembly And Assembly
BOSS® DIAGNOSTIC TOOL
Procedure
SENDER AND SENSOR
Service Checks
Components
RPM SENSOR
Adjustment
MONITOR SERVICE CODES
TROUBLESHOOTING THE BOSS® & LCD DISPLAY
OPERATION SENSING SYSTEM UNIT
Removal And Installation
BOSS® INSTRUMENT PANEL
Removal And Installation
PWM MODULE(*S/N 514111443 –514114999) (*Except S/N 514111445)
Description
PWM TROUBLESHOOTING
Conditions
Chart
PWM CONTROL HANDLE
Handle Testing
PWM ELECTRIC SOLENOID
Solenoid Coil Testing
TRACTION LOCK CONTROL SYSTEM
Description
Inspection
Maintenance
ELECTRICAL/HYDRAULIC CONTROLS REFERENCE
Controls Identification Chart

SPECIFICATIONS
LOADER SPECIFICATIONS
PERFORMANCE
CONTROLS
ENGINE
HYDRAULIC SYSTEM
ELECTRICAL
DRIVE SYSTEM
CAPACITIES
TIRES
FLOOR PRESSURE
ENGINE SPECIFICATIONS
General
Fuel System
Valve and Valve Guide & Seat Insert
Piston, Rings and Connecting Rod
Cylinder Head
Crankshaft and Main Bearings
Camshaft and Bearings
Oil Pump
Engine Torque Specifications
Torque for General Metric Bolts
TORQUE SPECIFICATIONS FOR LOADER
HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS
STANDARD TORQUE SPECIFICATIONS FOR BOLTS
DECIMAL AND MILLIMETER EQUIVALENTS
U.S. TO METRIC CONVERSION

SERVICE MANUAL REVISIONS
873–001
873–002
873–003
873–004
873–005
873-006

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