Service manual Caterpillar 320 Excavator | ELW00001-UP

2D, 2D Advanced, and 3D GRADE System for Next Gen Hydraulic Excavators
– 2D Accuracy – Test
– 3D Accuracy – Test
– 3D Boom Foot Pin Position – Test
– 3D GNSS Antenna Position – Test
– 3D Project – Setup
– 3D System Components – Test
– A6N2 Network Manager Port Configurations – Check
– Basic Troubleshooting Practices
– Bucket Measure-Up – Test
– Bucket Sensor – Check and Adjust
– Bucket Wear – Adjust – Length J-J1
– Calibration – 3D Measure-Up with GNSS
– Calibration – 3D Measure-Up with Total Station
– Calibration – Bucket Measure-Up for Bucket Type Work Tool
– Calibration – Bucket Measure-Up for Tilt Bucket Type Work
– Calibration – Bucket Measure-Up for Tilt-Rotator Bucket Type
– Calibration – Bucket Sensor – AMR or IMU
– Calibration – Front IMU Fine Calibration – Optional
– Calibration – Inertial Measuring Unit (IMU)
– Calibration – Inertial Measuring Unit (IMU) Identification
– CAN Data Link – Test
– Chassis IMU – Test
– Configuration – Correction Sources
– Configuration – GRADE ECM
– Configuration – Machine/Implement ECM Settings
– Configuration – User Permissions
– Connector Locations
– Determining Diagnostic Trouble Codes
– Device Software/Firmware
– Diagnostic Capabilities
– Diagnostic Trouble Codes
– EC520 – Replace
– EC520 ECM – Access
– EC520 ECM – Check and Install
– ECM – Check and Install
– ECM – Configure
– ECM – Replace
– ECM Software – Install
– Electrical Connector – Inspect
– Emerging Symptom Information
– Error Messages – GNSS Receivers (GRADE 3D Display
– Features
– Front Linkage – Test
– General Information
– General Information
– GNSS – Replace
– GNSS Correction Source – Install
– GNSS Receiver Firmware – Check and Install
– GRADE Application – Check and Install
– GRADE TD520 Operating System – Check and Install
– IMU – Replace
– IMU Calibrated Angle – Test – Boom, Stub Boom, One-Piece Boom,
– Machine Preparation for Troubleshooting
– Sensor (Data Link Type) – Test
– Sensor Signal (PWM) – Test
– Sensor Supply – Test
– Service Tool Accuracy – Test – Indicator (Digital Level)
– Service Tools
– Symptom Troubleshooting
– System Accuracy – Test
– System Components
– Tilt Sensor Firmware – Check and Install
– Tilt-Rotator Sensor Firmware – Check and Install
– Visual Inspection
– Wiring Harness (Open Circuit) – Test
– Wiring Harness (Short Circuit) – Test
– Work Tool Tilt Angle -Test
– Work Tool Tip Tilting – Test
– ZSNAP – System Snapshot
320 GC, 320, 323 GC, 323 and 325 Excavators Tool Control System
– Combined Function – Electric Relief
– Combined Function – Electric Relief – Default Value of Work Tool
– Combined Function – Electric Relief – Parameter Adjustment
– Combined Function – Electric Relief – Parameter Setting
– Combined Function – Electric Relief – Relief Valve (Line) – Test
– Combined Function – Manual Relief
– Combined Function – Manual Relief – Default Value of Work Tool
– Combined Function – Manual Relief – Parameter Adjustment
– Combined Function – Manual Relief – Parameter Setting
– Combined Function – Manual Relief – Relief Valve (Line) – Test
– General Information
– Joystick and Pedal – Calibrate
– Medium Pressure Hydraulic System
– Medium Pressure: Default Value of Work Tool Parameters
– Medium Pressure: Relief Valve (Line) – Test and Adjust
– Medium Pressure: Relief Valve (Main) – Test and Adjust
– One-Way/One Pump
– One-Way/One Pump – Default Value of Work Tool Parameters
– One-Way/One Pump – Parameter Adjustment
– One-Way/One Pump – Parameter Setting
– One-Way/One Pump – Relief Valve (Line) – Test and Adjust
– Process for Setting Up the Work Tool
– Sensors
– Solenoid Valve (Proportional Reducing) – Calibrate – High
– Solenoid Valve (Proportional Reducing) – Calibrate – Main Pump
– Solenoid Valve (Proportional Reducing) – Calibrate – Medium
– Solenoid Valve (Proportional Reducing) – Calibrate – Variable
– Solenoid Valves
– Switches
– System Identification
– Work Tool – Select
– Work Tool Parameter – Program
– Work Tool Parameter – Program
– Work Tool Parameters – Control Functions
Bluetooth Operator ID and Machine Security System (MSS)
– Bluetooth Transceiver – Test
– Configuration – Fleet/Key Configuration
– Configuration – Machine Security System
– Data Link
– Diagnostic Operation
– Electronic Control Module (ECM)
– Factory Password – Obtain
– General Information
– General Information
– Glossary of Terms
– Key – Program
– Key Information
– Machine Security System – Uninstall
– Normal Operation – Hydraulic Excavators
– Normal Operation – Other Machines
– Operation of Status Indicator
– Protected Functions
– Scheduled Access – Program – Security System Bypass
– Scheduled Access – Security System Bypass Times
– Service Operation Using Service Tool
– System Components
– System Overview
– Time – Set
Disassembly and Assembly 320 Engineless Hydraulic Excavator Machine Systems
– Accumulator – Remove and Install
– Boom – Remove and Install
– Boom Bearings and Seals – Remove and Install
– Boom Cylinder – Assemble
– Boom Cylinder – Disassemble
– Boom Cylinder – Remove and Install
– Bucket – Remove and Install
– Bucket Cylinder – Assemble
– Bucket Cylinder – Disassemble
– Bucket Cylinder – Remove and Install
– Bucket Linkage – Remove and Install
– Bucket Linkage Bearings and Seals – Remove and Install
– Cab – Remove and Install
– Check Valve (Cooler Bypass) – Assemble
– Check Valve (Cooler Bypass) – Disassemble
– Counterbalance Valve (Travel) – Remove and Install
– Counterweight – Remove and Install
– Duo-Cone Conventional Seals – Install
– Front Idler and Recoil Spring – Remove and Install
– Hydraulic Lockout Control – Remove and Install
– Hydraulic Tank – Remove and Install
– Hydraulic Tank – Remove and Install – Case Drain Screen
– Hydraulic Tank – Remove and Install – Suction Screen
– Hydraulic Track Adjusters – Assemble
– Hydraulic Track Adjusters – Disassemble
– Joystick Control and Mounting – Remove and Install – Left Side
– Joystick Control and Mounting – Remove and Install – Right
– Load Control Valve (Stick Cylinder) – Remove and Install
– Main Control Valve – Assemble
– Main Control Valve – Disassemble
– Main Control Valve – Remove and Install
– Main Hydraulic Pump – Assemble
– Main Hydraulic Pump – Disassemble
– Pilot Valve (Joystick) – Assemble
– Pilot Valve (Joystick) – Disassemble
– Position Sensor (Internal Measurement Unit) – Remove and
– Position Sensor (Swing) – Remove and Install
– Position Sensor and Mounting (Bucket) – Remove and Install
– Pump Drive Coupling – Remove and Install
– Recoil Spring – Assemble
– Recoil Spring – Disassemble
– Seat – Remove and Install
– Sprocket – Remove and Install
– Stick – Remove and Install
– Stick Bearings and Seals – Remove and Install
– Stick Cylinder – Assemble
– Stick Cylinder – Disassemble
– Stick Cylinder – Remove and Install
– Stick Cylinder – Remove and Install
– Swing Gear and Bearing – Install
– Swing Gear and Bearing – Remove
– Swing Motor – Assemble
– Swing Motor – Disassemble
– Swing Motor – Remove and Install
– Swivel – Assemble
– Swivel – Disassemble
– Swivel – Remove and Install
– Track – Separate and Connect
– Track Carrier Roller – Remove and Install
– Track Roller – Remove and Install
– Travel Motor – Assemble
– Travel Motor – Assemble
– Travel Motor – Disassemble
– Travel Motor – Disassemble
– Travel Motor – Remove and Install
– Travel Motor – Remove and Install
– Travel Motor – Remove and Install
– Trim – Remove and Install – Seat Trim
– Upper Frame and Undercarriage Frame – Connect
– Upper Frame and Undercarriage Frame – Separate
– Window Wiper Motor – Remove and Install
Next Generation Hydraulic Excavator Air Conditioning and Heating
– Air Conditioning 2357-4 – Air Conditioner Evaporator Coil
– Air Conditioning 2357-5 – Air Conditioner Evaporator Coil
– Air Conditioning 2938-4 – Cab Ventilation Duct #1 Air
– Air Conditioning 2938-5 – Cab Ventilation Duct #1 Air
– Air Conditioning 5761-6 – HVAC Blower Motor: Current
– Air Conditioning 5762-2 – Air Conditioner Compressor
– Air Conditioning 5763-2 – Cab Air Heater Mix Actuator:
– Air Conditioning 779-12 – Cab Air Temperature Sensor:
– Air Conditioning and Heating System
– Air Conditioning and Heating System Relay Operation
– Air Conditioning and Heating System Sensor Operation
– Air Conditioning and Heating System Troubleshooting
– Air Conditioning Performance – Test
– Air Conditioning System Electrical Schematic
– Blower Motor
– Control Module
– Control Panel (Air Conditioner and Heater)
– Evaporator Coil
– Fan Control (Blower Motor)
– General Information
– General Troubleshooting Information
– Heater Core (Cab)
– Machine Preparation for Troubleshooting
– Manifold Gauge Set (Refrigerant) – Install
– Manifold Gauge Set (Refrigerant) – Remove
– Motor (Air Conditioner Control)
– Pressure Switch (Refrigerant Pressure Cutoff)
– 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
– Troubleshooting Faults with Service Codes
– Visual Inspection
Next Generation Hydraulic Excavator Tiltrotator System
– General Information (Work Tool System) – Tiltrotator
– Joystick Control – Calibrate
– Location of Components (Work Tool System)
– Process for Setting Up the Work Tool – Tiltrotator Calibrations
– Process for Setting Up the Work Tool – Tiltrotator Machine
– Tiltrotator Default Parameters
– Tiltrotator System – If Equipped
– Tiltrotator Wedge Lock – Adjust – If Equipped
Schematic Caterpillar 320 Excavator Electrical System
– Features
– Cover Page
– Information
– Component Location
– Vol 1 – Cab Wiring and Product Link
– Vol 2 – Chassis
– Connector Location
– Vol 1 – Cab Wiring and Product Link
– Vol 2 – Chassis
– Schematics
– Function Isolation Tools
– Grids On/Off
– All Circuits Off
– All Circuits On
– Vol 1 – Cab Wiring and Product Link
– Unspecified Circuit
– Black (Ground)
– 032 (Red) (Battery Power)
– 640 (Blue) (Key Power)
– 305 (Lt Blue) (Converter 12v Out)
– 021 (Orange) (Starting)
– 190 (Dk Pink) (Start Aid)
– 258 (Dk Purple) (Machine Primary Control)
– 347 (Dk Green) (BCM Cab Control)
– 430 (Dk Gray) (Machine Secondary Control)
– 509 (Lt Pink) (Engine Control)
– 613 (Dk Yellow) (Heat/AC)
– 4665 (Tan) (Turn/Wiper/Washer)
– CON 509 (J1939/1587 D.L.)
– CON 032 (RS232/485 D.L.)
– CON 522 (CAN “B” D.L.)
– CON 141 (CAN “C” D.L)
– SUB 651 (Blue Gray) (Ethernet)
– Vol 2 – Chassis
– Unspecified Circuit
– Black (Ground)
– 032 (Red) (Battery Power)
– 640 (Blue) (Key Power)
– 021 (Orange) (Starting)
– 258 (Dk Purple) (Machine Primary Control)
– 347 (Dk Green) (BCM Cab Control)
– 430 (Dk Gray) (Machine Secondary Control)
– 4665 (Tan) (Turn/Wiper/Washer)
– CON 509 (J1939/1587 D.L.)
– CON 032 (RS232/485 D.L.)
– CON 522 (CAN “B” D.L.)
– CON 141 (CAN “C” D.L.)
– CON 305 (CAN “D” D.L.)
– SUB 651 (Blue Gray) (Ethernet)
– Machine Views
– Vol 1 – Cab Wiring and Product Link
– Cab Front
– Cab Rear
– Left Hand Console
– Product Link
– Right Hand Console
– Seat Rear
– Vol 2 – Chassis
– Cab Bottom
– Cab Rear Side
– Chassis Rear View
– Control Valve Rear
– Control Valve Front
– Cooling System
– Machine Front View
– Machine Right Side
– Stick and Boom
– Swing View
Schematic Caterpillar 320 Excavator Hydraulic System
– Features
– Cover Page
– Information
– Component Location
– Tap Location
– Schematic
– Function Isolation Tools
– Grids On/Off
– All Circuits Off
– All Circuits On
– 021 (Orange) (Pilot Circuit)
– 032 (Red) (Pump 1 Output)
– 141 (Lt Orange) (Heavy Lift Control)
– 190 (Dk Pink) (Travel Left Control)
– 347 (Dk Green) (Supply Line)
– 464 (Brown) (Stick Control Circuit)
– 522 (Lt Purple) (Swing Control Circuit)
– 577 (Lt Green) (Drain/Return Line)
– 613 (Dk Yellow) (Swing Brake Circuit)
– 640 (Blue) (Pump 2 Output)
– 651 (Blue Gray) (Travel Speed Control Circuit)
– 4665 (Tan) (Bucket Control)
– 5655 (Lt Gray) (Travel Right Control)
– 5767 (Olive Green) (Boom Control)
– Machine Views
– Cylinders
– Machine – Top Right
– Machine – Top
– Main Control Valve
– Pump – Right Rear
Schematic Caterpillar Next Generation Hydraulic Excavator Air Conditioning Electrical System
– Features
– Cover Page
– Information
– Component Location
– Untitled
– Untitled
– Schematic
– Machine View
– Air Conditioner Gp
Specifications 320 Excavator Machine Systems
– Air Conditioner and Mounting
– Auxiliary Hydraulic Lines
– Auxiliary Hydraulic Lines
– Auxiliary Hydraulic Lines
– Auxiliary Hydraulic Lines
– Auxiliary Hydraulic Lines – Quick Coupler
– Boom – 5.7 m (18.62 ft)
– Boom – Fore Boom Group – 3.3 m (10.83 ft)
– Boom – Stub Boom – 2.7 m (8.79 ft)
– Boom Cylinder
– Boom Cylinder
– Boom Cylinder Lines
– Boom Cylinder Lines
– Boom Cylinder Lines
– Boom Cylinder Lines
– Boom Cylinder Lines
– Boom Lines
– Boom Lines
– Bucket Cylinder
– Bucket Cylinder Lines
– Bucket Cylinder Lines
– Bucket Linkage
– Bucket Linkage
– Cab
– Cab
– Cab
– Cab – Front Window Guard
– Cab Window
– Cab Window
– Check Valve
– Control Valve
– Control Valve
– Control Valve (Auxiliary)
– Control Valve (Stick Lowering)
– Counterweight Mounting
– Coupler Lines
– Coupler Lines
– Drain Line
– Drift Reduction Valve
– Electric Motor and Mounting (Main Hydraulic Pump)
– Final Drive
– Final Drive – Without Motor
– Final Drive and Motor Fastener (Mounting)
– Front Idler
– Front Lines
– Front Lines
– Front Lines
– Front Lines
– Front Lines
– Front Lines
– Grease Lines
– Grease Lines
– Hydraulic Oil Cooler Lines Group
– Hydraulic Oil Lines
– Hydraulic Tank and Filter
– Hydraulic Tank and Mounting
– Joystick Control
– Main Control Valve
– Main Hydraulic Pump
– Pedal Control (Auxiliary)
– Pedal Control (Travel)
– Pilot Lines
– Position Sensor and Mounting
– Position Sensor and Mounting
– Position Sensor and Mounting – Inertial Measurement Unit
– Pump Control Valve
– Pump Coupling
– Recoil Spring
– Relief Valve
– Relief Valve (Main) – Heavy Lift
– Rollover Protective Structure (ROPS) Mounting
– Seat Belt
– Solenoid and Relief Valve
– Sprocket
– Stick
– Stick Cylinder
– Stick Cylinder Lines
– Stick Lines
– Suction Fan
– Swing Drive
– Swing Drive – Without Motor
– Swing Drive Mounting
– Swing Gear and Bearing
– Swing Motor
– Swing Motor
– Swing Motor
– Swivel
– Track
– Track Adjuster
– Track Carrier Roller
– Track Roller (Single Flange)
– Track Roller (Single Flange)
– Track Roller Mounting
– Travel Motor
– Travel Motor Guard
– Travel Motor Lines
– Window Wiper
– Window Wiper
– Window Wiper Motor – Lower
Systems Operation 320 GC, 320, 323 GC and 323 Excavator Machine Systems
– Accumulator (Pilot)
– Boom Cylinder
– Boom Drift Reduction Valve
– Boom System
– Boom System – Smart BoomHydraulic System) (If Equipped
– Boom System – Variable Angle (VA) Boom Hydraulic System)
– Bucket Cylinder
– Bucket System
– Check Valve (Load)
– Check Valve (Return Makeup)
– Control Valve (Boom Lowering)
– Control Valve (Stick Lowering)
– Control Valve (Straight Travel)
– Displacement Change Valve
– Displacement Change Valve
– Electronic Control (Machine System)
– Engine Control
– Final Drive
– General Information (Boom System)
– General Information (Bucket System)
– General Information (Machine System)
– General Information (Main Control Valve)
– General Information (Main Pump System)
– General Information (Pilot System)
– General Information (Return System)
– General Information (Stick System)
– General Information (Swing System)
– General Information (Travel System)
– Graphic Color Codes
– Hydraulic Oil Cooler
– Hydraulic Tank and Filter
– Joystick Control
– Machine System
– Main Control Valve
– Main Hydraulic Pump
– Oil Makeup (Travel System)
– Oil Makeup (Travel System)
– Oil Makeup (Travel System)
– Pilot System
– Pilot Valve (Swing Parking Brake)
– Pump Control (Main Hydraulic) – Main Pump Regulator
– Quick Coupler System – If Equipped
– Relief Valve (Cushion Crossover) – Anti-Reaction Valve
– Relief Valve (Line)
– Relief Valve (Main)
– Relief Valve (Main) – Heavy Lift
– Relief Valve (Swing)
– Return Hydraulic System
– Solenoid Valve (Fine Swing) – If Equipped
– Solenoid Valve (Hydraulic Lockout)
– Stick Cylinder
– Stick Drift Reduction Valve
– Stick System
– Swing Drive
– Swing Motor
– Swing System
– Swivel
– Travel Counterbalance Valve
– Travel Counterbalance Valve
– Travel Counterbalance Valve
– Travel Motor
– Travel Motor
– Travel Motor
– Travel Parking Brake
– Travel Parking Brake
– Travel Parking Brake
– Travel System
– Travel System
– Travel System
Systems Operation Next Generation Hydraulic Excavator Monitoring System
– Data Link
– Feature Menu
– General Information
– Menu Outline
– Password Entry
– Prestart Monitoring Function
– System Schematic
– Warning Operation
Testing and Adjusting 320 GC, 320 and 323 Excavator Systems
– Accumulator (Pilot) – Test and Charge
– Assist – Calibrate – Additional Fine-Tuning for Grade Assist
– Automatic Travel Speed Control – Test
– Cylinder Drift – Check – Empty Bucket
– Cylinder Drift – Check – Loaded Bucket
– Cylinder Speed – Check
– Engine Performance – Test – Engine Speed
– Engine Performance – Test – Engine Speed
– General Calibration Information – Additional Calibrations For Ease of Use
– General Testing and Adjusting Information
– Hydraulic System Air – Purge – Medium Pressure Circuit
– Hydraulic System Warm-Up
– Implement – Calibrate
– Joystick and Pedal – Calibrate
– Machine Drift on a Slope – Check
– Machine Preparation
– Main Hydraulic Pump Air – Purge
– Main Pump (Flow) – Test – Hydraulic Power
– Main Pump – Calibrate
– Operational Checks
– Overload Warning – Set – If Equipped
– Pressure Reducing Valve (Pilot Oil) – Test and Adjust
– Pump Control (Output Flow) – Adjust
– Pump Control (Output Flow) – Test – One Pump Calibration
– Relief Valve (Crossover) – Test
– Relief Valve (Crossover) – Test and Adjust
– Relief Valve (Crossover) – Test and Adjust
– Relief Valve (Line) – Test and Adjust
– Relief Valve (Main) – Test and Adjust
– Relief Valve (Swing) – Test and Adjust
– Relief Valve (Swing) – Test and Adjust
– Specifications
– Specifications
– Specifications
– Swing Bearing Movement – Measure
– Swing Motor – Test – Measurement of Case Drain Oil
– 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
– System Pressure – Release
– Travel Motor – Test – Measurement of Case Drain Oil
– Travel Motor – Test – Measurement of Case Drain Oil
– Travel Motor – Test – Measurement of Case Drain Oil
– Travel on Level Ground – Test
– Travel on Level Ground – Test – Optional Test
– Visual Inspection
Troubleshooting 320, 320 GC, 323, 323 GC, 325, 326, 326 GC, 330, 330 GC and 335 Excavator Machine Systems Troubleshooting
– Alarm – Test
– Bluetooth Transceiver – Test
– CAN Data Link – Test
– CAN Data Link – Test
– Connector Contact Description
– Connector Locations
– Determining Diagnostic Trouble Codes
– Diagnostic Capabilities
– Diagnostic Trouble Codes
– ECM – Configure
– ECM – Replace
– ECM Location Code – Test
– ECM Software – Install
– Electrical Connector – Inspect
– Electronic Symptom Troubleshooting
– Emerging Symptom Information
– Ethernet Data Link – Test
– Ethernet Data Link – Test
– Event Codes
– General Information
– Machine Preparation for Troubleshooting
– Operator Control Switch (Switch to Battery) – Test
– Relay – Test
– Sensor (Data Link Type) – Test
– Sensor Signal (Analog, Passive) – Test
– Sensor Signal (PWM) – Test
– Sensor Supply – Test
– Sensor Supply – Test – Display
– Sensor Supply – Test – Display
– Service Tools
– Solenoid Valve – Test
– Solenoid Valve – Test
– Solenoid Valve – Test
– Solenoid Valve – Test
– Solenoid Valve – Test
– Solenoid Valve – Test
– Solenoid Valve – Test
– Symptom Troubleshooting
– Symptom Troubleshooting – Electronic Fan Overheating
– System Schematic
– System Schematic
– System Schematic
– System Schematic
– System Schematic
– System Schematic
– System Schematic
– Visual Inspection
– Wiring Harness (Open Circuit) – Test
– Wiring Harness (Short Circuit) – Test