(S/N: 514140001 & Above - S/N: 514240001 & Above - S/N: 517911001 & Above - S/N: 520111001 & Above - S/N: 520211001 & Above)
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This service manual PDF download for the 873, 883 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, 883
TURBO - INCLUDES HIGH FLOW
G Series
S/N: 514140001 & Above
S/N: 514240001 & Above
S/N: 517911001 & Above
S/N: 520111001 & Above
S/N: 520211001 & Above
TABLE OF CONTENTS :
FORWORD
SAFETY INSTRUCTIONS
FIRE PREVENTION
SERIAL NUMBER LOCATION
DELIVERY REPORT
BOBCAT LOADER IDENTIFICATION
SAFETY & MAINTENANCE
HYDRAULIC SYSTEM
HYDROSTATIC SYSTEM
DRIVE SYSTEM
MAIN FRAME
ELECTRICAL SYSTEM & ANALYSIS
ENGINE SERVICE
HEATING, VENTILATION, AIR CONDITIONING
SPECIFICATIONS
SERVICE MANUAL REVISION
MANUAL SPECIFICATION :
File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
P/N : 6900847 (7-10)
Total Pages : 921
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MAINTENANCE SAFETY
ALPHABETICAL INDEX
CONTENTS
FOREWORD
SAFETY INSTRUCTIONS
FIRE PREVENTION
Maintenance
Operation
Electrical
Hydraulic System
Fueling
Starting
Spark Arrestor Exhaust System
Welding And Grinding
Fire Extinguishers
SERIAL NUMBER LOCATION
Loader Serial Number
Engine Serial Number
DELIVERY REPORT
BOBCAT LOADER IDENTIFICATION
SAFETY & MAINTENANCE
LIFTING AND BLOCKING THE LOADER
Procedure
LIFT ARM SUPPORT DEVICE
Installing The Lift Arm Support Device
Removing Lift Arm Support Device
OPERATOR CAB
Description
Raising The Operator Cab
Lowering The Operator Cab
Emergency Exit
TRANSPORTING THE BOBCAT LOADER
Procedure
TOWING THE LOADER
Procedure For Non-Two-Speeds
Procedure For Two-Speeds
REMOTE START
Procedure for Loader Without Attachments Control Harness
Procedure for Loader With Attachments Control Harness
Procedure
SERVICE SCHEDULE
Chart
AIR CLEANER SERVICE
Replacing Filter Element
ENGINE COOLING SYSTEM
Cleaning The Cooling System
FUEL SYSTEM
Fuel Specifications
Filling The Fuel Tank
Fuel Filter
Removing Air From The Fuel System
Fuel Lift Pump Strainer
ENGINE LUBRICATION SYSTEM
Checking Engine Oil
Replacing Oil And Filter
HYDRAULIC / HYDROSTATIC SYSTEM
Checking And Adding Fluid
Hydraulic / Hydrostatic Filter Replacement
Replacing Hydraulic Fluid
FINAL DRIVE TRANSMISSION (CHAINCASE)
Checking And Adding Oil
Replacing The Oil
FAN GEARBOX
Checking And Adding Oil
BOB-TACH
Inspection And Maintenance
POWER BOB-TACH (OPTION)
Inspection And Maintenance
LUBRICATION OF THE BOBCAT LOADER
Procedure
TIRE MAINTENANCE
Wheel Nuts
Tire Rotation
Tire Mounting
HYDRAULIC SYSTEM
HYDRAULIC / HYDROSTATIC SCHEMATICS
HYDRAULIC SYSTEM INFORMATION
Troubleshooting
Tighten Procedures
CYLINDER (LIFT)
Checking
Removal And Installation
Parts Identification
Disassembly
Assembly
CYLINDER (TILT)
Checking
Removal And Installation
Parts Identification
Disassembly
CYLINDER (POWER BOB-TACH)
Checking
Removal And Installation
Parts Identification
Disassembly
Assembly
MAIN RELIEF VALVE (FOOT CONTROL)
Checking The Main Relief Valve At Front Auxiliary Hydraulics
Checking The Main Relief Valve Without Front Auxiliaries
Removal and Installation
Adjustment
MAIN RELIEF VALVE (AHC)
Checking The Main Relief Valve At Front Auxiliary Hydraulics
Checking The Main Relief Valve Without Front Auxiliaries
Removal and Installation
Adjustment
HYDRAULIC CONTROL VALVE (FOOT CONTROL)
Removal And Installation
BICS™ Valve, Removal And Installation
BICS™ Valve, Lift Arm Bypass Orifice Removal And Installation
BICS™ Valve, Check Valve Removal And Installation
BICS™ Valve, Lock Valve Removal And Installation
BICS™ Valve, Solenoid Removal And Installation
BICS™ Valve, Solenoid Testing
Identification Chart
Load Check Valve
Main Relief Valve
Port Relief Valve, Tilt Spool (Linkage End)
Port Relief Valve, Lift Spool (Bonnet End)
Anti-Cavitation Valve / Port Relief Valve, Tilt Spool (Bonnet End)
Anti-Cavitation Valve, Lift Spool (Linkage End)
Rubber Boot
Lift And Tilt Lock Block
Lift Spool and Detent Removal
Lift Spool And Detent Disassembly
Lift Spool and Detent Assembly
Lift Spool And Detent Installation
Tilt Spool Removal And Installation
Tilt Spool Disassembly And Assembly
Auxiliary Spool Removal And Installation (Bonnet End)
Auxiliary Spool Removal And Installation (Linkage End)
Auxiliary Plug Removal And Installation
Auxiliary Electric Solenoid Disassembly
Port-Auxiliary Section Removal And Installation
Cleaning And Inspection
HYDRAULIC CONTROL VALVE (ADVANCED CONTROL SYSTEM) (ACS) (AHC)
Description
Actuator Removal And Installation (In Loader)
Removal And Installation
BICS™ Valve Removal And Installation
BICS™ Valve, Lift Arm Bypass Orifice Removal And Installation
BICS™ Valve Check Valve Removal And Installation
BICS™ Valve Lock Valve Removal And Installation
BICS™ Valve Solenoid Removal And Installation
BICS™ Valve Solenoid Testing
Actuator Removal And Installation
Identification Chart
Lift Base End Restrictor
Load Check Valve
Main Relief Valve
Port Relief Valve
Anti-Cavitation Valve / Port Relief Valve
Anti-Cavitation Valve
Lift Spool Removal
Tilt Spool Removal And Installation
Lift and Tilt Spool Disassembly And Assembly
Auxiliary Spool Removal And Installation
Auxiliary Electric Solenoid Disassembly
Port-Auxiliary Section Disassembly
Cleaning And Inspection
LIFT ARM BYPASS CONTROL VALVE
Inspecting
Additional Inspection For Loaders With Advanced Hand Controls
Removal And Installation
Disassembly And Assembly
HYDRAULIC PUMP (ALUMINUM)
Check The Output Of The Pump
Removal And Installation
Identification
Disassembly
Inspection
Assembly
HYDRAULIC PUMP (ALUMINUM HIGH FLOW)
Check The Output Of The Pump
Removal And Installation
Identification
Disassembly
Inspection
Assembly
HYDRAULIC PUMP (CAST IRON)
Check The Output Of The Hydraulic Pump Without Power Bob-Tach
Check The Output Of The Hydraulic Pump With Power Bob-Tach.
Removal And Installation
Identification
Disassembly And Assembly
HYDRAULIC PUMP (CAST IRON HIGH FLOW)
Check The Output Of The Hydraulic Pump Without Power Bob-Tach
Check The Output Of The Hydraulic Pump With Power Bob-Tach.
Removal And Installation
Identification
Disassembly And Assembly
HYDRAULIC / HYDROSTATIC FILTER
Housing Removal And Installation
Mount Removal And Installation
HYDRAULIC FLUID RESERVOIR
Draining The Fluid Reservoir
Removal And Installation
Hydraulic Fluid Screen
BUCKET POSITION VALVE (873 - S/N 514147758 & BELOW)
Solenoid Removal And Installation
Solenoid Testing
Removal And Installation
BUCKET POSITION VALVE (873 - S/N 514147759 & Above & 883)
Solenoid Removal And Installation
Solenoid Testing
Removal And Installation
Disassembly And Assembly
SELECT VALVE
Checking The High Flow Pump Relief Valve
Removal And Installation
Disassembly And Assembly
Solenoid Testing
REAR AUXILIARY DIVERTER VALVE (SINGLE SHUTTLE)
Removal And Installation
Disassembly
Inspection
Solenoid Testing
Assembly
POWER BOB-TACH BLOCK (6674305 ALUMINUM)
Removal And Installation
Disassembly And Assembly
POWER BOB-TACH BLOCK (6676547 ALUMINUM)
Removal And Installation
Disassembly And Assembly
POWER BOB-TACH BLOCK (6677646-CAST IRON)
Removal And Installation
Disassembly And Assembly
POWER BOB-TACH BLOCK (6678206-CAST IRON)
Removal And Installation
Disassembly And Assembly
POWER BOB-TACH BLOCK (6678554-CAST IRON)
Removal And Installation
Disassembly And Assembly
AUXILIARY PRESSURE RELEASE (ACCUMULATOR)
Removal and Installation
Disassembly And Assembly
HYDROSTATIC SYSTEM
HYDROSTATIC SYSTEM INFORMATION
Troubleshooting Chart
Replenishing Valve Function
HYDROSTATIC MOTOR
Removal And Installation
Parts Identification
Disassembly
Inspection
Assembly
HYDROSTATIC MOTOR (TWO-SPEED)
Removal And Installation
Parts Identification
Disassembly
Inspection
Assembly
HYDROSTATIC MOTOR CARRIER
Removal and Installation
Parts Identification
Disassembly
Assembly
CHARGE PRESSURE
Sender Removal And Installation
HYDROSTATIC PUMP
Replenishing / High Pressure Relief Valve
Charge Pressure Relief Valve
Removal And Installation
Parts Identification (Right Half)
Parts Identification (Left Half)
Hydraulic Pump Removal
Disassembly
Assembly
DRIVE BELT
Shield Removal And Installation
Adjustment
Replacement
Tensioner Pulley Removal And Installation
Tensioner Pulley Tension Spring
OIL COOLER
Hydraulic Oil Cooler Removal and Installation
OIL COOLER (SEAL TO CONNECT) (STC)
Hydraulic Oil Cooler Removal and Installation
DRIVE SYSTEM
BRAKE
Pedal Removal And Installation
Pedal Disassembly And Assembly
Switch Operated Parking Brake
Disc Removal And Installation
BRAKE (TWO-SPEED)
Block Removal And Installation
Block Disassembly And Assembly
DRIVE COMPONENTS
Axle Seal Removal And Installation
Axle, Sprocket And Bearings Removal And Installation
Drive Chain Removal And Installation
CHAINCASE
Front Chaincase Cover Removal And Installation
Rear Chaincase Cover Removal And Installation
MAINFRAME
SEAT BAR
Removal And Installation
Assembling Components
Compression Spring Disassembly And Assembly
OPERATOR CAB
Gas Cylinder Removal And Installation
Gas Cylinder Bracket Disassembly And Assembly
Removal And Installation
OPERATOR SEAT
Removal And Installation
Seat Belt Removal And Installation
OPERATOR SEAT (SUSPENSION)
Removal And Installation
Slide Rail Removal And Installation
Cushion Removal And Installation
Back Removal And Installation
Shock Removal And Installation
BOB-TACH
Removal And Installation
Bob-Tach Lever And Wedge
Pivot Pin Bushing And Seal Replacement
POWER BOB-TACH (883)
Removal And Installation
Power Bob-Tach Lever And Wedge
Pivot Pin Bushing And Seal Replacement
LIFT ARMS
Stabilizer Bar Removal And Installation
Link Removal And Installation
Removal And Installation
REAR GRILL
Removal And Installation
REAR DOOR
Removal And Installation
Adjusting The Rear Door Latch
FUEL TANK
Removal And Installation
Fuel Level Sender
CONTROL PEDALS
Removal And Installation
Pedal Adjustment
CONTROL PEDALS (ACS)
Foot Sensor Removal And Installation
Foot Pedal Removal And Installation
Foot Pedal Linkage Disassembly And Assembly
CONTROL PANEL
Removal and Installation
Steering Lever Boot
CONTROL HANDLE
Shock Removal And Installation
Shaft Removal And Installation
Shaft Disassembly And Assembly
Lever Removal And Installation
Steering Lever Boot
Linkage Removal And Installation
Linkage Neutral Adjustment
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC)
Components Identification
Handle Control Unit Removal And Installation
Control Handle Removal and Installation
Control Handle Disassembly and Assembly
Control Lever Removal and Installation
Control Lever Boot
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC) (W/ PUSH BUTTON FLOAT)
Components Identification
Handle Sensor Removal And Installation
Control Handle Removal and Installation
Control Handle Disassembly and Assembly
Control Lever Removal and Installation
Control Lever Boot
CONTROL HANDLE (ADVANCED CONTROL SYSTEM) (ACS) ADVANCED HAND CONTROL
Components Identification
Handle Sensor Removal And Installation
Control Handle Removal and Installation
Control Handle Disassembly and Assembly
Control Lever Removal and Installation
Control Lever Boot
CONTROL HANDLE (ADVANCED CONTROL SYSTEM) (ACS) SELECTABLE HAND / FOOT CONTROL
Components Identification
Handle Sensor Removal And Installation
Control Handle Removal and Installation
Control Handle Disassembly and Assembly
Control Lever Removal and Installation
Control Lever Boot
ELECTRICAL SYSTEM & ANALYSIS
ELECTRICAL SCHEMATICS
ELECTRICAL SYSTEM INFORMATION
Troubleshooting Chart
Description
Fuse Location
Relay Switch Location
Solenoid Test
BATTERY
Removal And Installation
Servicing The Electrical System
Using A Booster Battery (Jump Starting)
ALTERNATOR (55 AMP)
Adjusting The Alternator Belt
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
ALTERNATOR (90 AMP)
Adjusting The Alternator Belt
Alternator Identification
Charging System Check
Alternator Voltage Test
Low Voltage Test
High Voltage Test
Removal And Installation
Rectifier Continuity (Diode) Test
Alternator Regulator Test
Disassembly
Stator Continuity Test
Stator Ground Test
Rotor Continuity Test
Rotor Ground Test
Assembly
STARTER
Removal And Installation
Parts Identification
Disassembly And Assembly
External Pinion
Inspection And Repair
Magnetic Switch Test
No Load Test
INSTRUMENT PANEL
Left Panel
Right Panel - Standard Instrument Panel (With Key Switch) [Figure 60-50-2]
Right Panel - (Deluxe) (With Keyless Start) [Figure 60- 50-3]
Right Panel Setup Display Options (Deluxe)
Passwords
Option and Field Accessory Panels
Standard Panel Removal And Installation (Right Side)
Deluxe Panel Removal And Installation (Right Side)
Standard & Deluxe Panel Removal And Installation (Left Side)
Front Accessory Panel Removal And Installation
LIGHTS
Front Removal And Installation
Rear Removal And Installation
BOBCAT CONTROLLER
Identification Chart
Removal And Installation
DIAGNOSTICS
Service Codes
BICS™ SYSTEM
Inspecting The BICS™ Controller (Engine STOPPED - Key ON)
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED - Key ON)
Inspecting The Seat Bar Sensor (Engine RUNNING)
Inspecting The Traction Lock (Engine RUNNING)
Inspecting The Lift Arm Bypass Control
Additional Inspection For Loaders With Advanced Hand Controls (AHC)
Troubleshooting Chart
Troubleshooting Guide
SEAT BAR SENSOR
Troubleshooting Chart
Test
Removal And Installation
BICS™ Circuit Test
TRACTION LOCK
Troubleshooting Chart
Removal And Installation (Single Speed)
Description Of The Control System (Single Speed)
Inspecting The Control System (Single Speed)
ADVANCED HAND CONTROL (AHC) SYSTEM
Components Identification
Troubleshooting Guide
Parts Identification
AHC Controller Removal And Installation
Handle Control Unit Connector
Switch Handle Removal And Installation
Actuators Disassembly and Assembly
ADVANCED HAND CONTROL (AHC) SYSTEM (W/ PUSH BUTTON FLOAT)
Components Identification
Troubleshooting Guide
Controller, Connector And Wire Identification
AHC Controller Removal And Installation
Handle Control Unit Removal And Installation
Handle Control Unit Connector
Switch Handle Removal And Installation
Actuators Disassembly and Assembly
ADVANCED CONTROL SYSTEM (ACS)
Components Identification
Troubleshooting Guide
Controller, Connector And Wire Identification
ACS Controller Removal And Installation
Handle Sensor Connector
Switch Handle Removal
Switch Handle Installation
Actuators Disassembly and Assembly
Handle Lock Solenoid Removal And Installation
Handle Lock Solenoid Disassembly And Assembly
Handle Lock Solenoid Connector
Calibration Of The ACS System
Switchable Hand / Foot Controls Calibration Procedure
Hand Controls Only Calibration Procedure
Foot Sensor Disassembly And Assembly
Foot Sensor Connector
Foot Lock Solenoid Removal And Installation
Foot Lock Solenoid Connector
ELECTRICAL / HYDRAULIC CONTROLS REFERENCE
Controls Identification Chart
ENGINE SERVICE
TROUBLESHOOTING
Chart
ENGINE SPEED CONTROL
Removal And Installation
Speed Control Cable
Speed Control Linkage
MUFFLER
Removal And Installation
AIR CLEANER
Housing Removal And Installation
RADIATOR
Removal And Installation
COOLING FAN
Drive Tension Pulley Removal And Installation
Gearbox/Blower Housing Removal And Installation
Blower Removal And Installation
Gearbox Parts Identification
Gearbox Disassembly
Gearbox Assembly
Gearbox, Checking Backlash
ENGINE COMPONENTS AND TESTS
Engine Compression, Checking
Glow Plug, Checking
Fuel Shut-Off Solenoid, Checking
Fuel Shut-Off Solenoid Removal And Installation
Fuel Injection Pump Removal
Fuel Injection Pump Timing
Fuel Injection Pump Installation
Fuel Injector Removal And Installation
Fuel Injector, Checking
Fuel Injector Disassembly
Fuel Injector Assembly
Timing Belt Inspection
Timing Belt Removal
Timing Belt Installation
Timing Belt, Replacement In the Loader
Valve Clearance Adjustment
Valve Timing, Checking
Valve Timing, Checking (Cont’d)
Thermostat, Oil Pressure Control Valves & Heater Connections
ENGINE
Removal And Installation
Mount Replacement
FLYWHEEL AND HOUSING
Flywheel Removal And Installation
Ring Gear Removal And Installation
Flywheel Housing Removal And Installation
RPM SENSOR
Adjustment
RECONDITIONING THE ENGINE
Deutz Engine Tools Identification Chart
Disassembly
Assembly
Cylinder, Checking
Camshaft Bearing, Checking
Camshaft Bearing, Removal And Installation
Control Rod Guide Bushing Removal
Control Rod Guide Bushing Installation
Rear Cover Seal Removal And Installation
Crankshaft, Checking
Connecting Rod, Checking
Piston, Checking
Piston Pin, Checking
Piston Rings Installation
Piston Installation On The Connecting Rod
Cylinder Head Disassembly
Valves, Checking
Valve Seats, Checking
Valve Spring, Checking
Cylinder Head Assembly
Rocker Arm And Bracket, Checking
Front Cover Disassembly
Front Cover Assembly
Turbo Charger Removal And Installation
Crankshaft Gear Mounting Bolt Torque Procedure
HEATING, VENTILATION, AIR CONDITIONING
AIR CONDITIONING SYSTEM FLOW
Principals
Chart
COMPONENTS
Identification
SAFETY
Safety Equipment
REGULAR MAINTENANCE
Filter Elements Removal And Installation
Compressor Drive Belt Inspection
Cleaning The Condenser
BASIC TROUBLESHOOTING
Poor A/C Performance
Cleaning The A/C Evaporator Coil & Heater Coil
Receiver/Drier Sight Glass Inspection
Compressor Drive Belt Inspection
Checking The Electrical System
Engine Coolant Bypassing The Heater Valve
Heater Valve Not Opening Or Closing
GENERAL AIR CONDITIONING SERVICE GUIDELINES
Compressor Oil
Compressor Oil Check
Component Replacement And Refrigeration Leaks
SYSTEM TROUBLESHOOTING CHART
TEMPERATURE/PRESSURE
Chart
AIR CONDITIONING SERVICE
Chart
SYSTEM CHARGING AND RECLAMATION
Reclamation Procedure
Charging Procedure With A Manifold Gauge Set
Charging Procedure
COMPRESSOR
Removal And Installation
Compressor Clutch Disassembly
CONDENSER
Removal And Installation
RECEIVER/DRIER
Removal And Installation
PRESSURE RELIEF VALVE
Removal And Installation
PRESSURE SWITCH
Removal And Installation
EVAPORATOR/HEATER UNIT
Removal And Installation
Disassembly And Assembly
THERMOSTAT
Removal And Installation
EXPANSION VALVE
Removal And Installation
EVAPORATOR
Removal And Installation
HEATER COIL
Removal And Installation With A/C
Removal And Installation Without A/C
BLOWER FAN
Removal And Installation
Disassembly And Assembly
Wire Connector Removal and Installation
HEATER VALVE
Removal and Installation
Disassembly And Assembly
SPECIFICATIONS
LOADER SPECIFICATIONS (873)
Machine Dimensions
Performance
Controls
Engine
Hydraulic System
Electrical
Drive System
Capacities
Tires
LOADER SPECIFICATIONS (883)
Machine Dimensions
Performance
Controls
Engine
Hydraulic System
Electrical
Drive System
Capacities
Tires
ENGINE SPECIFICATIONS
General
Fuel System
Valve and Valve Guide and Seat Insert
Pistons and Rings
Connecting Rod
Cylinder Head and Block
Crankshaft and Main Bearings
Camshaft and Bearings
Oil Pump
LOADER TORQUE
Specifications
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
O-ring Flare Fitting
Port Seal Fitting
HYDRAULIC / HYDROSTATIC FLUID SPECIFICATIONS
Specifications
CONVERSIONS
Decimal And Millimeter Equivalents
U.S. To Metric Conversion Chart
SERVICE MANUAL REVISION
873/873H-1
873/873H-2
873/873H-3
873/883-4
873/883-5
873/883-6
873/883-7
873/883-8
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Bobcat 873, 883 G-Series Skid-Steer Loader Repair Service Manual - 6900847.pdf
Source : Sitelux.com