308C CR, 314C CR and 321C CR Excavators Air Conditioning and Heating
– Actuator (Air Conditioner Control)
– Actuator Troubleshooting – Abnormal Detection
– Air Conditioner Lines
– Air Conditioner Lines
– Air Conditioner Lines
– Air Conditioner Lines
– Air Conditioner Lines
– Air Conditioner Lines
– Air Conditioner Lines
– Air Conditioning and Heating System Sensor Operation
– Air Conditioning and Heating System Sensor Operation
– Air Conditioning System
– Air Conditioning System Schematic
– Air Conditioning System Schematic
– Air Conditioning System Schematic
– Air Conditioning System Troubleshooting – Guide for
– Air Conditioning System Troubleshooting – Guide for
– Air Conditioning System Troubleshooting – Guide for Sensors
– Air Conditioning System Troubleshooting – Guide for Sensors
– Belt – Test
– Blower Motor
– Blower Motor
– Blower Motor
– Control Panel
– Control Panel
– Evaporator Coil
– General Information
– General Troubleshooting Information
– Heater Core (Cab)
– Heater System (Cab)
– Heating System Schematic
– Heating System Schematic
– Heating System Schematic
– Machine Preparation for Troubleshooting
– Manifold Gauge Set (Refrigerant) – Install
– Manifold Gauge Set (Refrigerant) – Remove
– Motor (Air Conditioner Control)
– Pressure Switch (Refrigerant Pressure Cutoff)
– Pressure Switch (Refrigerant Pressure Cutoff)
– Pressure Switch (Refrigerant Pressure Cutoff)
– Refrigerant Compressor
– Refrigerant Compressor
– Refrigerant Compressor
– Refrigerant Compressor Oil – Check
– Refrigerant Condenser
– Refrigerant Expansion Valve
– Refrigerant Leakage – Test
– Refrigerant Receiver-Dryer
– Refrigerant Recovery
– Refrigerant System – Charge
– Refrigerant System – Evacuate
– Refrigerant System – Flush
– Required Tools
– Sensor Troubleshooting
– Speed Control – Power Transistor
– System Capacities for Refrigerant (Excavators) – 308C CR-
– Visual Inspection
4M40 DIESEL ENGINE SHOP MANUAL
– Cooling
– Electrical
– Engine
– Foreward
– Fuel and Engine Control
– General
– General
– General
– Intake And Exhaust
– Lubrication
– Systems Operation
– Testing and Adjusting
Air Conditioning and Heating R134a for All Caterpillar Machines
– Refrigerant Compressor
– System Capacities for Refrigerant (Off-Highway Trucks)
– General Information
– Identifying the Refrigerant
– Identifying the Air Conditioning System
– Identifying the Heating System
– Refrigerant Expansion Valve System
– Refrigerant Orifice Tube System
– Refrigerant Compressor
– Refrigerant Condenser
– Refrigerant Receiver-Dryer
– Refrigerant Compressor
– Refrigerant Expansion Valve
– In-line Refrigerant Dryer
– Refrigerant Orifice Tube Assembly
– Evaporator Coil
– Refrigerant Accumulator
– Refrigerant Compressor Protection System
– Temperature Control
– Pressure Switch (Refrigerant)
– Cab Pressurization and Filtration System
– Condensate Drainage System
– Refrigerant Compressor
– Service Intervals
– Glossary of Terms
– Required Tools
– Machine Preparation for Troubleshooting
– General Troubleshooting Information
– General Troubleshooting Information
– Visual Inspection (Troubleshooting)
– Air Conditioning System Troubleshooting
– Heating System Troubleshooting
– Automatic Temperature Control System (ECM Controlled)
– Refrigerant Compressor
– Troubleshooting Heating and Air Conditioning Control System
– Troubleshooting Heating and Air Conditioning Control System
– Automatic Temperature Control Panel Troubleshooting – 584
– Troubleshooting Condensate Drainage System
– Machine Preparation for Testing and Adjusting
– Air Conditioning Performance – Test
– Refrigerant Leakage – Test
– Manifold Gauge Set (Refrigerant) – Install
– Refrigerant Recovery
– Refrigerant System – Flush
– Refrigerant Compressor
– Refrigerant Oil – Test
– Refrigerant Compressor – Test
– Refrigerant System – Evacuate
– Refrigerant System – Charge
– Manifold Gauge Set (Refrigerant) – Remove
– Compressor Protection System – Test
– Electronic Heat Control – Test
– Heater Performance – Test
– Heating and Air Conditioning Service Publications
– General Information
– Refrigerant Compressor
– Machine Preparation for Disassembly and Assembly
– Air Conditioner Lines – Remove and Install
– Refrigerant Compressor – Remove and Install
– Refrigerant Accumulator – Remove and Install
– Refrigerant Expansion Valve – Remove and Install
– Refrigerant Receiver-Dryer – Remove and Install
– In-Line Refrigerant Dryer – Remove and Install
– Refrigerant Orifice Tube Assembly – Remove and Install
– Refrigerant Compressor
– System Capacities for Refrigerant (Motor Graders)
– System Capacities for Refrigerant (Off-Highway Trucks) –
– Refrigerant Compressor
Disassembly and Assembly 308C Excavator Machine Systems
– Accumulator (Hydraulic Pilot) – Remove and Install
– Auxiliary Hydraulic Pump – Assemble – Blade
– Auxiliary Hydraulic Pump – Disassemble – Blade
– Auxiliary Hydraulic Pump – Install – Blade
– Auxiliary Hydraulic Pump – Remove – Blade
– Blade – Remove and Install
– Blade Cylinder – Install
– Blade Cylinder – Remove
– Blower Motor – Remove and Install
– Boom – Install
– Boom – Remove
– Boom Bearings and Seals – Install
– Boom Bearings and Seals – Remove
– Boom Cylinder – Install
– Boom Cylinder – Remove
– Bucket – Install
– Bucket – Remove
– Bucket Cylinder – Install
– Bucket Cylinder – Remove
– Bucket Linkage – Install
– Bucket Linkage – Remove
– Cab – Install
– Cab – Remove
– Check Valve (Cooler Bypass) – Install
– Check Valve (Cooler Bypass) – Remove
– Control Manifold (Pilot Oil) – Assemble
– Control Manifold (Pilot Oil) – Disassemble
– Control Manifold (Pilot Oil) – Install
– Control Manifold (Pilot Oil) – Remove
– Counterweight – Remove and Install
– Duo-Cone Conventional Seals – Install
– Evaporator Coil – Remove and Install
– Evaporator Coil Temperature Sensor – Remove and Install
– Final Drive and Travel Motor – Assemble
– Final Drive and Travel Motor – Disassemble
– Final Drive and Travel Motor – Install
– Final Drive and Travel Motor – Remove
– Final Drive Sprocket – Remove and Install
– Front Idler and Recoil Spring – Install
– Front Idler and Recoil Spring – Remove
– Fuel Tank – Install
– Fuel Tank – Remove
– Gear Pump (Pilot) – Assemble
– Gear Pump (Pilot) – Disassemble
– Gear Pump (Pilot) – Install
– Gear Pump (Pilot) – Remove
– Heater Core – Remove and Install
– Heating and Air Conditioning Unit – Install
– Heating and Air Conditioning Unit – Remove
– Hydraulic Oil Cooler – Install
– Hydraulic Oil Cooler – Remove
– Hydraulic Oil Tank – Install
– Hydraulic Oil Tank – Remove
– Main Control Valve – Assemble
– Main Control Valve – Disassemble
– Main Control Valve – Install
– Main Control Valve – Remove
– Main Hydraulic Pump – Assemble
– Main Hydraulic Pump – Disassemble
– Main Hydraulic Pump – Install
– Main Hydraulic Pump – Remove
– Main Hydraulic Pump Air Pressure – Purge
– Pilot Valve (Blade) – Assemble
– Pilot Valve (Blade) – Disassemble
– Pilot Valve (Blade) – Install
– Pilot Valve (Blade) – Remove
– Pilot Valve (Implement) – Assemble
– Pilot Valve (Implement) – Disassemble
– Pilot Valve (Implement) – Install
– Pilot Valve (Implement) – Remove
– Pilot Valve (Travel) – Assemble
– Pilot Valve (Travel) – Disassemble
– Pilot Valve (Travel) – Install
– Pilot Valve (Travel) – Remove
– Pressure Reducing Valve – Remove and Install – Flow Control
– Pressure Switch (Refrigerant Pressure Cutoff) – Remove and
– Recoil Spring – Assemble
– Recoil Spring – Disassemble
– Refrigerant Receiver-Dryer – Remove and Install
– Relief Valve (Pilot) – Remove and Install
– Seat – Remove and Install
– Seat Suspension – Remove and Install
– Stick – Install
– Stick – Remove
– Stick Cylinder – Install
– Stick Cylinder – Remove
– Swing Drive – Assemble
– Swing Drive – Disassemble
– Swing Drive – Install
– Swing Drive – Remove
– Swing Gear and Bearing – Remove and Install
– Swing Motor – Assemble
– Swing Motor – Disassemble
– Swing Motor – Install
– Swing Motor – Remove
– Swivel – Assemble
– Swivel – Disassemble
– Swivel – Install
– Swivel – Remove
– System Pressure – Release
– Track – Connect
– Track – Separate
– Track Adjuster – Assemble
– Track Adjuster – Disassemble
– Track Adjuster – Install
– Track Adjuster – Remove
– Track Carrier Roller – Install
– Track Carrier Roller – Remove
– Track Roller – Install
– Track Roller – Remove
– Undercarriage Frame – Install
– Undercarriage Frame – Remove
Disassembly and Assembly 308C ExcavatorEngine Supplement
– Air Cleaner – Remove and Install
– Air Inlet Manifold – Install
– Air Inlet Manifold – Remove
– Alternator – Remove and Install
– Electric Starting Motor – Remove and Install
– Engine – Install
– Engine – Remove
– Engine Oil Filter and Oil Filter Base – Install
– Engine Oil Filter and Oil Filter Base – Remove
– Engine Oil Filter Base – Assemble
– Engine Oil Filter Base – Disassemble
– Engine Oil Level Gauge (Dipstick) – Remove and Install
– Exhaust Manifold – Remove and Install
– Fan – Remove and Install
– Fan Guard – Remove and Install
– Fuel Filter (Primary) and Fuel Filter Base – Remove and Install
– Fuel Priming Pump – Remove and Install
– Governor Control Motor – Remove and Install
– Hood – Remove and Install
– Muffler – Remove and Install
– Radiator – Install
– Radiator – Remove
– Refrigerant Condenser – Remove and Install
– Shutoff Solenoid – Remove and Install
– System Pressure – Release
– V-Belts – Remove and Install
– Valve Mechanism Cover – Remove and Install
– Water Temperature Regulator – Remove and Install
Schematic Caterpillar 308C CR Excavator Electrical System
– Features
– Cover Page
– Information
– Component Location
– Connector Location
– Standard Electrical
– Schematic
– Machine Views
– Machine Harness Connector And Component Locations
– Fuse Box (Inside)
– Hydraulic Oil Tank
– Left Console
– Pilot Oil Manifold
– Platform Bottom
– Relay Panel
– Right Console
– Seat Support (Inside)
Schematic Caterpillar 308C CR Excavator Electrical System
– Features
– Cover Page
– Information
– Component Location
– Connector Location
– Specifications and Related Manuals
– Standard Electrical
– Schematic
– Machine Views
– Machine Harness Connector and Component Locations
– Fuse Box (Inside)
– Hydraulic Oil Tank
– Left Console
– Pilot Oil Manifold
– Platform Bottom
– Relay Panel
– Right Console
– Seat Support (Inside)
Schematic Caterpillar 308C CR Excavators Hydraulic System – Attachment Boom Lowering Control Valve
– Features
– Cover Page
– Information
– Component Location
– Fluid Power Symbols
– Electrical Symbols
– Schematic
– Machine View
– Machine Component Location
Schematic Caterpillar 308C CR Excavators Hydraulic System – Attachment Stick Lowering Control Valve
– Features
– Cover Page
– Information
– Component Location
– Fluid Power Symbols
– Electrical Symbols
– Schematic
– Machine View
– Machine Component Locations
Schematic Caterpillar 308C Excavator Hydraulic System (Attachment) One Way Two Pump Flow
– Features
– Cover Page
– Information
– Component Location
– Fluid Power Symbols
– Electrical Symbols
– Schematic
– Machine View
– Machine Component Locations
Schematic Caterpillar 308C Excavator Hydraulic System – Attachment
Schematic Caterpillar 308C and 308C CR Excavator Hydraulic System
Schematic Caterpillar 308C and 308C CR Excavators Hydraulic System (Attachment) Combined Function
– Features
– Cover Page
– Information
– Component Location
– Fluid Power Symbols
– Electrical Symbols
– Schematic
– Machine View
– Machine Component Locations
Schematic Caterpillar 308C and 308C CR Excavators Hydraulic System (Attachment) Control Pattern
– Features
– Cover Page
– Information
– Component Location
– Fluid Power Symbols
– Electrical Symbols
– Schematic
– Machine View
– Machine Component Locations
Schematic Caterpillar 308C and 308C CR Excavators Hydraulic System (Attachment) Two Way Flow
– Features
– Cover Page
– Information
– Component Location
– Fluid Power Symbols
– Electrical Symbols
– Schematic
– Machine View
– Machine Component Locations
Schematic Caterpillar 308C and 308C CR Excavators Hydraulic System (Attachment) With Blade
– Features
– Cover Page
– Information
– Component Location
– Fluid Power Symbols
– Electrical Symbols
– Schematic
– Machine View
– Machine Component Locations
Specifications 308C Excavator Machine System
– Accumulator (Pilot)
– Air Conditioner Lines
– Auxiliary Hydraulic Lines – Common / Long Boom
– Auxiliary Hydraulic Lines – Long Boom
– Blade Cylinder Lines
– Blade Lift Cylinder
– Blade Mounting
– Boom
– Boom Cylinder
– Boom Cylinder Lines
– Boom Lines
– Bucket
– Bucket Adjuster
– Bucket Cylinder
– Bucket Linkage
– Bucket Sidecutter
– Control Valve (Blade)
– Control Valve (Main)
– Counterweight Mounting
– Engine Mounting
– Fasteners
– Final Drive
– Flow Control Valve
– Front Idler
– Front Lines
– Front Lines – Common Piping
– Front Lines – Double Action
– Front Lines – Single Action
– Fuel Tank
– Handle Control (Travel)
– Hydraulic Control (Auxiliary Pedal)
– Hydraulic Tank and Filter
– Joystick Control
– Main Hydraulic Pump
– Main Hydraulic Pump Mounting
– Pilot Control Valve (Blade)
– Pilot Control Valve (Travel)
– Pilot Lines – Rear
– Pilot Valve (Joystick)
– Pilot Valve (Oil Manifold)
– Pump Lines (Main)
– Recoil Spring
– Relief Valve (Pilot)
– Return and Oil Filter Lines
– Selector Valve (Control Pattern Change)
– Stick – 1.7 m (5.5 ft)
– Stick – 2.2 m (7.25 ft)
– Stick Cylinder
– Stick Cylinder Lines
– Swing Drive
– Swing Gear and Bearing
– Swing Motor
– Swing Motor Lines
– Track Adjuster
– Track Carrier Roller
– Track Roller (Single Flange)
– Track Roller Mounting
– Track Shoe Bolts
– Travel Motor Guard
– Travel Motor Lines
– Upper Frame
– Wiring (Battery)
Systems Operation & Testing and Adjusting 308C Excavator Electrical and Electronic System
– Accelerator Cable – Adjust
– Action Alarm Does Not Sound – Troubleshoot
– Alarm Indicator for Engine Oil Pressure Is Illuminated and
– Charge Alarm Indicator Is Illuminated – Troubleshoot
– Chassis Light Does Not Illuminate – Troubleshoot
– Circuit for Low Idle Switch – Troubleshoot
– Controller – Troubleshoot
– Dome Light Does Not Illuminate – Troubleshoot
– Electrical System
– Electrical System Troubleshooting
– Engine Control System
– Engine Coolant Temperature Gauge Reads High or Gauge
– Engine Coolant Temperature Gauge Reads Low or Gauge Does
– Engine Speed Does Not Respond to Engine Speed Dial –
– Fuel Gauge Reads High or Gauge Quickly Moves Beyond
– Fuel Gauge Reads Low or Gauge Does Not Move –
– General Information
– General Information
– Glow Indicator Does Not Illuminate – Troubleshoot
– Governor Actuator – Troubleshoot
– Harness and Wire Identification
– High Speed Mode for Travel Does Not Activate – Troubleshoot
– Horn Does Not Sound – Troubleshoot
– Hydraulic Oil Temperature Gauge Reads High or Gauge
– Hydraulic Oil Temperature Gauge Reads Low or Gauge Does
– Indicators Do Not Illuminate – Troubleshoot
– Indicators Do Not Illuminate and Action Alarm Does Not
– Low Idle Indicator Does Not Respond to Low Idle Switch –
– Low Idle System Does Not Respond to Low Idle Switch –
– Monitor – Disassemble
– Monitoring System
– Panel Light for Monitor Does Not Illuminate – Troubleshoot
– Radio Does Not Activate – Troubleshoot
– Radio Does Not Sound – Troubleshoot
– Service Hour Meter Does Not Activate – Troubleshoot
– Service Tools
– Specified Engine Speed for High Idle or Low Idle Is Not
– Starting Motor Does Not Rotate – Troubleshoot
– Starting Motor Rotates But Engine Does Not Start –
– Window Washer Does Not Activate – Troubleshoot
– Wiper Motor Does Not Rotate – Troubleshoot
– Wiper Motor Does Not Stop – Troubleshoot
Systems Operation 308C CR Excavator Hydraulic System
– Accumulator (Pilot)
– Blade Hydraulic System
– Boom Drift Reduction Valve
– Boom Hydraulic System
– Bucket Hydraulic System
– Check Valve (Load)
– Control Valve (Boom Lowering)
– Control Valve (Stick Lowering)
– Control Valve (Straight Travel)
– Cylinders (Boom, Stick and Bucket)
– Displacement Change Valve
– Final Drive
– General Information
– Hydraulic Filter (Pilot)
– Hydraulic Tank and Filter
– Main Control Valve
– Main Hydraulic Pump
– Main Hydraulic System
– Negative Flow Control System
– Oil Makeup (Travel System)
– Pilot Hydraulic System
– Pilot Valve (Joystick)
– Pilot Valve (Travel)
– Pump Control (Main Hydraulic)
– Relief Valve (Line)
– Relief Valve (Main)
– Relief Valve (Pilot)
– Return Hydraulic System
– Solenoid Valve (Hydraulic Activation)
– Stick Hydraulic System
– Swing Drive
– Swing Hydraulic System
– Swing Motor
– Swivel
– Travel Counterbalance Valve
– Travel Hydraulic System
– Travel Motor
– Travel Parking Brake
Systems Operation EquipmentManager Dealer Administrator Manual
– Active Fleet
– Administration
– Asset Watch
– Enable Program
– Equipment Usage
– Fault Codes
– Fuel Results
– General Information
– Getting Started
– Health Watch
– Maintenance Watch
– Major Repair
– Manage Equipment Groups
– Manage Event Tracking
– Manage Hardware
– Manage Major Repair Tracking
– Manage Planned Maintenance
– Manage Time Fence and Geographic Fence
– Manage Users
– Operation and Maintenance Manual
– Planned Maintenance
– Preference Detail
– Preferences
– Product Link Installation
– Product Monitoring
– Product Usage
– Reports
– Setup Subscriptions
– Time Fence and Geographic Fence
– Upload Data
– Verify Machine Records and Ownership
Systems Operation EquipmentManager User Guide
– Getting Started
– Manage Major Repair Tracking
– Manage Time Fence and Geographic Fence
– Manage Planned Maintenance
– Preferences
– Preference Detail
– Asset Watch
– Time Fence and Geographic Fence
– Maintenance Watch
– Planned Maintenance
– Major Repair
– Verify Machine Records and Ownership
– Health Watch
– Fuel Results
– Fault Codes
– Reports
– Product Usage
– Product Monitoring
– Operation and Maintenance Manual
– Equipment Usage
– Manage Users
– Product Link Installation
– Administration
– Manage Equipment Groups
– Manage Hardware
– Manage Event Tracking
– Upload Data
– General Information
Systems Operation Troubleshooting Testing and Adjusting Product Link – PL522 523
– System Components
– Reports and Messages Not Available
– Position Reports Not Available
– Reporting Interval Erratic
– Diagnostics and Events Not Available
– Operating Hours Discrepancy
– Event Code List
– Diagnostic Code List
– MID 161 – CID 0168 – FMI 00
– MID 161 – CID 0168 – FMI 01
– MID 161 – CID 0254 – FMI 04
– Installation Parameters Configure
– MID 161 – CID 0254 – FMI 12
– MID 161 – CID 1250 – FMI 09
– MID 161 – CID 1251 – FMI 03
– MID 161 – CID 1888 – FMI 14
– MID 161 – CID 3766- FMI 14
– Electronic Control Module (ECM) – Flash Program
– Electronic Control Module (ECM) – Replace
– Electrical Connector – Inspect
– Wiring Harness (Open Circuit) – Test
– Wiring Harness (Short Circuit) – Test
– Configuration
– Specifications
– System Schematic
– Spare Input Configure
– Commands
– General Information
– Service Tools
– Diagnostic Capabilities
– Electronic Service Tool Does Not Communicate with ECM
– System Overview
Systems Operation Troubleshooting Testing and Adjusting Product Link 121S 300
– System Components
– Service Tools
– Diagnostic Capabilities
– Electronic Service Tool Does Not Communicate with ECM
– ECM Does Not Communicate with User Interface
– Position Reports Not Available
– Reporting Interval Erratic
– Diagnostics and Events Not Available
– Operating Hours Discrepancy
– Event Code List
– Diagnostic Code List
– Spare Inputs
– MID 122 – CID 0168 – FMI 00
– MID 122 – CID 0168 – FMI 01
– MID 122 – CID 0254 – FMI 04
– MID 122 – CID 0254 – FMI 12
– MID 122 – CID 0269 – FMI 03
– MID 122 – CID 0269 – FMI 04
– MID 122 – CID 1250 – FMI 09
– MID 122 – CID 1251 – FMI 03
– Electronic Control Module (ECM) – Flash Program
– Electronic Control Module (ECM) – Replace
– Configuration
– Electrical Connector – Inspect
– Wiring Harness (Open Circuit) – Test
– Wiring Harness (Short Circuit) – Test
– Specifications
– System Schematic
– Installation Parameters Configure
– Report Parameters Configure
– Wireless Service Configure
– Spare Input Configure
– Commands
– General Information
– System Overview
Testing and Adjusting 308C CR Excavator Hydraulic System
– Accumulator (Pilot) – Test and Charge
– Cylinder Drift – Check – Blade (If Equipped)
– Cylinder Drift – Check – Empty Bucket
– Cylinder Drift – Check – Loaded Bucket
– Cylinder Speed – Check – Blade (If Equipped)
– Cylinder Speed – Check – Boom, Stick and Bucket
– Engine Performance – Test – Engine Speed
– Gear Pump (Blade) – Test
– Gear Pump (Pilot) – Test
– General Testing and Adjusting Information
– Hydraulic System Pressure – Release
– Machine Drift on a Slope – Check
– Main Hydraulic Pump Air – Purge
– Main Pump (Flow) – Test
– Operational Checks
– Pump Control (Output Flow) – Adjust
– Relief Valve (Blade) – Test and Adjust – If Equipped
– Relief Valve (Line) – Test and Adjust
– Relief Valve (Line) – Test and Adjust – Equipped with Boom
– Relief Valve (Main) – Test and Adjust
– Relief Valve (Pilot) – Test and Adjust
– Relief Valve (Swing) – Test and Adjust
– Specifications
– Swing Motor – Test – Measurement of Case Drain Oil
– Swing Speed and Overswing on Level Ground – Check
– Swing Speed and Swing Drift on a Slope – Check
– Travel Motor – Test – Measurement of Case Drain Oil
– Travel on Level Ground – Test
– Travel on Level Ground – Test – Optional Test
– Visual Inspection
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