Complete Operation & Test manual with Electrical Wiring Diagrams for John Deere 250GLC Excavator (PIN: 1F9250GX_ _D608001— ) (PIN: 1F9250GX_C608001— ), with all the shop information to maintain, diagnose, and rebuild like professional mechanics.

John Deere 250GLC workshop diagnosis & test manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.

TM13078X19 - John Deere 250GLC Excavator Technical Manual (Operation & Test).pdf
tm13078x63 - John Deere Excavadora 250GLC.pdf
tm13078x54 - John Deere Escavadeira 250GLC.pdf

Total Pages: 1,699 pages
File Format: PDF (bookmarked, Searchable, Printable, high quality)
Category: Operation and Test
Language: Spanish English Portuguese
Published on 2019/11/26
Models: 250GLC (PIN: 1F9250GX_ _D608001— ; 1F9250GX_ _C608001— )

MAIN SECTIONS
   Foreword
   Technical Information Feedback Form
   General Information
      Safety
   Diagnostics
      Main Controller (MCZ) Diagnostic Trouble Codes
      Engine Control Unit (ECU) Diagnostic Trouble Codes (Level 14 Controller)
      Monitor Controller (DSZ) Diagnostic Trouble Codes
      Air Conditioner Controller (ACF) Diagnostic Trouble Codes
   Operational Checkout Procedure
      Operational Checkout Procedure
   Engine
      Theory of Operation
      Diagnostic Information
      Adjustments
      Tests
   Electrical System
      System Information
      System Diagrams
      Sub-System Diagnostics
      Monitor Operation
      References
   Power Train
      Theory of Operation
      Diagnostic Information
   Hydraulic System
      Theory of Operation
      Diagnostic Information
      Tests
   Heating and Air Conditioning
      Theory of Operation
      Diagnostic Information
      Tests
   Dealer Fabricated Tools
      Dealer Fabricated Tools

tm13078x19 - 250GLC Excavator

Table of Contents

Foreword

Section 9000: General Information

Group 01: Safety

Recognize Safety Information

Follow Safety Instructions

Operate Only If Qualified

Wear Protective Equipment

Avoid Unauthorized Machine Modifications

Add Cab Guarding for Special Uses

Inspect Machine

Stay Clear of Moving Parts

Avoid High-Pressure Fluids

Avoid High-Pressure Oils

Work In Ventilated Area

Avoid Static Electricity Risk When Refueling

Prevent Fires

Prevent Battery Explosions

Handle Chemical Products Safely

Decommissioning — Proper Recycling and Disposal of Fluids and Components

Prepare for Emergencies

Clean Debris from Machine

Use Steps and Handholds Correctly

Start Only From Operator's Seat

Use and Maintain Seat Belt

Prevent Unintended Machine Movement

Avoid Work Site Hazards

Keep Riders Off Machine

Avoid Backover Accidents

Inspect and Maintain ROPS

Avoid Machine Tip Over

Use Special Care When Lifting Objects

Add and Operate Attachments Safely

Park and Prepare for Service Safely

Service Cooling System Safely

Remove Paint Before Welding or Heating

Make Welding Repairs Safely

Drive Metal Pins Safely

Section 9001: Diagnostics

Group 10: Main Controller (MCZ) Diagnostic Trouble Codes

Main Controller (MCZ) Diagnostic Trouble Codes

Controller Area Network 0 (CAN 0) Circuit Diagnostics

Controller Area Network 1 (CAN 1) Circuit Diagnostics

Interface Controller Area Network (N-CAN) Diagnostics

011000.02 - Abnormal EEPROM

011001.02 - Abnormal RAM

011002.02 - Abnormal A/D Converter

011003.03 - Abnormal Sensor Voltage

011006.02 - Engine Controller Communication Error

011007.02 - (CAN 0) Data Converter Communication Error 1

011008.02 - (CAN 1) Data Converter Communication Error 2

011009.02 - (CAN 0) Monitor Controller Communication Error 1

011010.02 - (CAN 1) Monitor Controller Communication Error 2

011100.02 - Abnormal Engine Speed

011101.03 - Engine Speed Dial Sensor Circuit High Input

011101.04 - Engine Speed Dial Sensor Circuit Low Input

011200.03 - Pump 1 Delivery Pressure Sensor Circuit High Input

011200.04 - Pump 1 Delivery Pressure Sensor Circuit Low Input

011202.03 - Pump 2 Delivery Pressure Sensor Circuit High Input

011202.04 - Pump 2 Delivery Pressure Sensor Circuit Low Input

011206.03 - Pump 1 Flow Control Pressure Sensor Circuit High Input

011206.04 - Pump 1 Flow Control Pressure Sensor Circuit Low Input

011208.03 - Pump 2 Flow Control Pressure Sensor Circuit High Input

011208.04 - Pump 2 Flow Control Pressure Sensor Circuit Low Input

011301.03 - Swing Pilot Pressure Sensor Circuit High Input

011301.04 - Swing Pilot Pressure Sensor Circuit Low Input

011302.03 - Boom Up Pilot Pressure Sensor Circuit High Input

011302.04 - Boom Up Pilot Pressure Sensor Circuit Low Input

011303.03 - Arm Roll-in Pilot Pressure Sensor Circuit High Input

011303.04 - Arm Roll-in Pilot Pressure Sensor Circuit Low Input

011304.03 - Travel Pilot Pressure Sensor Circuit High Input

011304.04 - Travel Pilot Pressure Sensor Circuit Low Input

011307.03 - Front Attachment Pilot Pressure Sensor Circuit High Input

011307.04 - Front Attachment Pilot Pressure Sensor Circuit Low Input

011400.02 - Pump 2 Flow Rate Limit Solenoid Feedback Abnormal

011400.03 - Pump 2 Flow Rate Limit Solenoid Feedback High Current

011400.04 - Pump 2 Flow Rate Limit Solenoid Feedback Low Current

011401.02 - Torque Control Solenoid Abnormal Feedback

011401.03 - Torque Control Solenoid Feedback High Current

011401.04 - Torque Control Solenoid Feedback Low Current

011402.02 - Dig Regenerative Solenoid Feedback Current Abnormal

011402.03 - Dig Regenerative Solenoid Feedback Current High

011402.04 - Dig Regenerative Solenoid Feedback Current Low

011403.02 - Arm Regenerative Solenoid Feedback Current Abnormal

011403.03 - Arm Regenerative Solenoid Feedback Current High

011403.04 - Arm Regenerative Solenoid Feedback Current Low

011404.02 - Power Dig Solenoid Feedback Current Abnormal

011404.03 - Power Dig Solenoid Feedback Current High

011404.04 - Power Dig Solenoid Feedback Current Low

011405.02 - Travel Speed Solenoid Feedback Current Abnormal

011405.03 - Travel Speed Solenoid Feedback Current High

011405.04 - Travel Speed Solenoid Feedback Current Low

011407.02 - Power Dig/Travel Speed Solenoid Feedback Current Abnormal

011407.03 - Power Dig/Travel Speed Solenoid Feedback Current High

011407.04 - Power Dig/Travel Speed Solenoid Feedback Current Low

011457.02 - 2-Speed Activation Solenoid Valve Disconnected

011458.02 - Selector Valve Solenoid Valve Disconnected

011459.02 - Idle Stop Relay Circuit Malfunction

011901.03 - Hydraulic Oil Temperature Sensor Circuit High Input

011901.04 - Hydraulic Oil Temperature Sensor Circuit Low Input

020010.02 - Abnormal Exhaust Filter

Group 20: Engine Control Unit (ECU) Diagnostic Trouble Codes

Engine Control Unit (ECU) Diagnostic Trouble Codes

000158.01 - System Voltage Low

000171.03 - Ambient Air Temperature Sensor Out of Range High

000171.04 - Ambient Air Temperature Sensor Out of Range Low

000647.05 - Variable Speed Fan Solenoid Open Circuit

000647.31 - Fan Manual Reverse Mode Input Active Too Long

000898.09 - Engine Speed Request Not Received or Timed Out

001075.05 - Low-Pressure Fuel Pump Circuit has High Resistance

001075.06 - Low-Pressure Fuel Pump Circuit has Low Resistance

001638.09 - Hydraulic Oil Temperature Message Not Received or Timed Out

Group 30: Monitor Controller (DSZ) Diagnostic Trouble Codes

Monitor Controller (DSZ) Diagnostic Trouble Codes

013000.02 - Flash Memory Failure 1

013001.02 - Flash Memory Failure 2

013002.02 - ECU Communication Error

013003.02 - Main Controller (MCZ) Communication Error 1

013004.02 - Main Controller (MCZ) Communication Error 2

013005.02 - Monitor Controller (DSZ) Communication Error 1

013006.02 - Monitor Controller (DSZ) Communication Error 2

013007.02 - Machine Controller (BCZ) Communication Error

020113.02 - System Error Alarm

Group 40: Information Controller (ICZ) Diagnostic Trouble Codes

Information Controller (ICZ) Diagnostic Trouble Codes

013303.02 - Abnormal Monitor Internal Temperature Sensor

013304.02 - Alternator Alarm

013305.02 - Abnormal Manual Glow EXT Output

013310.03 - Coolant Temperature Sensor Short Circuit

013311.03 - Fuel Level Sensor Open Circuit

013311.04 - Fuel Level Sensor Shorted Circuit

013334.02 - Radiator Water Temp Receive Error

014000.02 - CAN Communication Error 1

014001.02 - Flash Memory Read/Write Error

014002.02 - External RAM Read/Write Error

014003.02 - Abnormal EEPROM

014006.02 - Communication Terminal: Communication Error

014008.02 - Abnormal Internal RAM

014009.02 - CAN Communication Error 2

014021.02 - Communication Terminal Security Error

014022.02 - SIM Card Error

014023.02 - Security Error

020100.02 - Overheat Alarm

020101.02 - Engine Warning Alarm

020102.02 - Engine Oil Pressure Alarm

020103.02 - Alternator Alarm

020105.02 - Hydraulic Oil Filter Restriction Alarm

020106.02 - Air Cleaner Restriction Alarm

020107.02 - Water Separator Alarm

020109.02 - Pilot Control Shutoff Lever Alarm

020110.02 - Fuel Filter Restriction Alarm

020114.02 - Overheat Alarm (Immediately After the Key is Turned ON)

020135.02 - Exhaust Filter Regeneration Unnecessary Warning

020149.02 - EGR Gas Temperature Alarm

020150.02 - Coolant Level Alarm

020151.02 - Engine Warning Alarm

020152.02 - Engine Oil Pressure Alarm

020153.02 - Air Cleaner Restriction Alarm

020154.02 - Fuel Filter Restriction Alarm

020155.02 - Engine Output Reduction Alarm

020156.02 - Cooling Performance Decrease Alarm

020157.02 - Cooling Performance Decrease Alarm

Group 50: Air Conditioner Controller (ACF) Diagnostic Trouble Codes

Air Conditioner Controller (ACF) Diagnostic Trouble Codes

11 - Open Circuit in Air Recirculation Sensor

12 - Short-Circuited Air Recirculation Sensor

13 - Open Circuit in Ambient Air Temperature Sensor

14 - Short-Circuited Ambient Air Temperature Sensor

18 - Short-Circuited Solar Radiation Sensor

21 - Open Circuit in Air Conditioner Freeze Control Switch

22 - Short-Circuited Air Conditioner Freeze Control Switch

43 - Abnormal Air Conditioner and Heater Blower Port Change Servomotor

44 - Abnormal Air Conditioner and Heater Mixer Servomotor

51 - Abnormal High/Low Refrigerant Pressure

91 - Communication Error

92 - CAN Bus Off Error

Section 9005: Operational Checkout Procedure

Group 10: Operational Checkout Procedure

Operational Checkout

Section 9010: Engine

Group 05: Theory of Operation

Engine Identification

John Deere Engine

Engine Fuel System Component Location

Engine Cooling System Component Location

Cold Weather Starting Aid

Engine Speed Control System Operation

Group 15: Diagnostic Information

John Deere Engine

Group 20: Adjustments

John Deere Engine

Group 25: Tests

John Deere Engine

Section 9015: Electrical System

Group 05: System Information

Electrical Diagram Information

Group 10: System Diagrams

Explanation of Wire Markings

Fuse and Relay Specifications

System Functional Schematic, Component Location, and Wiring Diagram Master Legend—6068HT062

System Functional Schematic, Component Location, and Wiring Diagram Master Legend—6068HT082

System Functional Schematic—6068HT062

System Functional Schematic—6068HT082

Cab Harness (W1) Component Location

Cab Harness (W1) Wiring Diagram

Machine Harness (W2) Component Location

Machine Harness (W2) Wiring Diagram

Monitor Harness (W3) Component Location

Monitor Harness (W3) Wiring Diagram

Engine Harness (W4) Component Location

Engine Harness (W4) Wiring Diagram

Engine Interface Harness (W5) Component Location

Engine Interface Harness (W5) Wiring Diagram

Pump Harness (W8) Component Location

Pump Harness (W8) Wiring Diagram

Service ADVISOR™ Remote (SAR) Harness (W10) Component Location

Service ADVISOR™ Remote (SAR) Harness (W10) Wiring Diagram

Pilot Shutoff Switch Harness (W11) Component Location

Pilot Shutoff Switch Harness (W11) Wiring Diagram

Auxiliary Fuse Box Harness (W13) Component Location (S.N. —XXXXXX)

Auxiliary Fuse Box Harness (W13) Wiring Diagram (S.N. —XXXXXX)

Heated Air Seat Harness (W14) Component Location

Heated Air Seat Harness (W14) Wiring Diagram

Multi-Function Pilot Control Lever Harness (W15) Component Location

Multi-Function Pilot Control Lever Harness (W15) Wiring Diagram

Travel Alarm Cancel Switch Harness (W16) Component Location

Travel Alarm Cancel Switch Harness (W16) Wiring Diagram

Attachment Harness (W17) Component Location

Attachment Harness (W17) Wiring Diagram

Alternator Harness (W18) Component Location

Alternator Harness (W18) Wiring Diagram

Rear Camera Harness (W19) Component Location

Rear Camera Harness (W19) Wiring Diagram

Alternator Jumper Harness (W20) Component Location

Alternator Jumper Harness (W20) Wiring Diagram

Pilot Shutoff Valve Harness (W21) Component Location

Pilot Shutoff Valve Harness (W21) Wiring Diagram

Auxiliary 3-Button Cancel Switch Harness (W22) Component Location

Auxiliary 3-Button Cancel Switch Harness (W22) Wiring Diagram

Reversing Fan Switch Harness (W23) Component Location—If Equipped

Reversing Fan Switch Harness (W23) Wiring Diagram—If Equipped

Travel Alarm Harness (W26) Component Location

Travel Alarm Harness (W26) Wiring Diagram

Starter Harness (W27) Component Location

Starter Harness (W27) Wiring Diagram

Starter Switch Harness (W29) Component Location

Starter Switch Harness (W29) Wiring Diagram

2-Speed Harness (W32) Component Location

2-Speed Harness (W32) Wiring Diagram

Fuel Injector Harness (W38) Component Location

Fuel Injector Harness (W38) Wiring Diagram

Glow Plug Harness (W40) Component Location

Glow Plug Harness (W40) Wiring Diagram

Heater and Air Conditioner Harness (W41) Component Location

Heater and Air Conditioner Harness (W41) Wiring Diagram

Starter Protection Jumper Harness (W42) Component Location

Starter Protection Jumper Harness (W42) Wiring Diagram

Cab Roof Light Harness (W44) Component Location

Cab Roof Light Harness (W44) Wiring Diagram

Cab Roof Light Jumper Harness (W45) Component Location

Cab Roof Light Jumper Harness (W45) Wiring Diagram

Cab Roof Light 1 Relay Harness (W46) Component Location

Cab Roof Light 1 Relay Harness (W46) Wiring Diagram

Cab Roof Light 2 Relay Harness (W47) Component Location

Cab Roof Light 2 Relay Harness (W47) Wiring Diagram

Auxiliary Solenoid Harness (W61) Component Location

Auxiliary Solenoid Harness (W61) Wiring Diagram

Modular Telematics Gateway (MTG) Harness (W6002) Component Location

Modular Telematics Gateway (MTG) Harness (W6002) Wiring Diagram

Satellite (SAT) Harness (W6003) Component Location

Satellite (SAT) Harness (W6003) Wiring Diagram

Group 15: Sub-System Diagnostics

Controller Area Network (CAN) Circuit Theory of Operation

Starting and Charging Circuit Theory of Operation

Monitor Controller (DSZ) Circuit Theory of Operation

Engine Control Unit (ECU) Circuit Theory of Operation

Main Controller (MCZ) Circuit Theory of Operation

Machine Controller (BCZ) Circuit Theory of Operation

Windshield Wiper and Washer Circuit Theory of Operation

Lighting Circuit Theory of Operation

Travel Alarm Circuit Theory of Operation

Pilot Shutoff Circuit Theory of Operation

Attachment Control Circuit Theory of Operation

Group 16: Monitor Operation

Service Menu

Troubleshooting

Monitoring

Controller Version

Issued Warning Record

Operation

Machine Setting

Monitor Setting

Group 20: References

Reading Diagnostic Trouble Codes with Monitor Display

Service ADVISOR™ Diagnostic Application

Service ADVISOR™ Connection Procedure

Controller Area Network (CAN) Circuit Test

Reading Diagnostic Trouble Codes with Service ADVISOR™ Diagnostic Application

MPDr Application

MPDr Connection Procedure

Electrical Component Specifications

Alternator Test

Electrical Component Checks

Battery Remove and Install

Rear Cover Remove and Install

Main Controller (MCZ) Remove and Install

Machine Controller (BCZ) Remove and Install

Engine Control Unit (ECU) Remove and Install

Data Converter Remove and Install

Monitor Controller (DSZ) Remove and Install

Air Conditioner Controller (ACF) Remove and Install

Key Switch Remove and Install

Right Switch Console Remove and Install

Left Switch Console Remove and Install

Travel Alarm Remove and Install

Heater Control Disable and Enable

Section 9020: Power Train

Group 05: Theory of Operation

Track Adjuster and Recoil Spring Operation

Travel Gearbox Operation

Group 15: Diagnostic Information

Noisy or Loose Track Chain

Tight Track Chain

Frequent Track Chain Sag Adjustment Required

Excessive Oil Leakage From Front Idler, Track Rollers, or Carrier Rollers

Bent Track Shoes

“Popping” of Track

Cracked Track Link

Chipped Link Rails

Individual Undercarriage Component Wear

Measure Swing Bearing Wear

Section 9025: Hydraulic System

Group 05: Theory of Operation

Hydraulic System Operation

Fan Drive Hydraulic System Operation—If Equipped

Pilot System Operation

Pilot Pump, Pressure Regulating Valve and Filter Operation

Pilot Shutoff Solenoid Valve Operation

Pilot Control Valve Operation

Travel Pilot Control Valve Operation

Pilot Operation of Control Valve Operation

Pilot Signal Manifold Operation

Pump 1, Pump 2 and Drive Gearbox Operation

Pump 1 and Pump 2 Regulator Operation

Engine Speed Sensing Control Circuit Operation

Control Valve Operation

Control Valve Check Valves Identification and Operation

Main Relief Valve Circuit Operation

Circuit Relief and Anticavitation Valve Operation

Travel Flow Combiner Valve Operation

Auxiliary Flow Combiner Valve and Bypass Shutoff Valve Operation

Boom Lower Meter-In Cut Valve Operation

Boom Regenerative Valve Circuit Operation

Dig Regenerative Valve Circuit Operation

Arm Regenerative Valve Circuit Operation

Bucket Regenerative Valve Circuit Operation

Boom and Arm Reduced Leakage Valves Operation

Arm 1 Flow Rate Control Valve Circuit Operation

Arm 2 Flow Rate Control Valve Circuit Operation

Bucket Flow Rate Control Valve Circuit Operation

Boom Flow Rate Control Valve Circuit Operation

Auxiliary Flow Rate Control Valve Circuit Operation

Swing Reduction Gearbox Operation

Swing Motor, Crossover Relief Valve, and Make-Up Check Valve Operation

Swing Motor Damper Valve

Swing Motor Park Brake Release Circuit Operation

Center Joint Operation

Travel Motor and Park Brake Valve Operation

Travel Motor Speed Circuit Operation

Cylinder Operation

Return Filter Operation

Auxiliary System Operation

Auxiliary Pilot Control Valve Operation

Flow Rate Select Solenoid Valve Operation

Flow Rate Pressure Reducing Valve Operation

Secondary Auxiliary Relief Valve Solenoid Valve Operation

Secondary Auxiliary Relief Control Valve Operation

Secondary Auxiliary Relief Valve Operation

Selector Valve Solenoid Valve Operation

Selector Valve Operation

Auxiliary Shuttle Valve Operation

Auxiliary High Flow Line Kit Operation

Two Way Solenoid Kit Operation

Two Pump Combined Flow Kit Operation

Secondary Auxiliary Relief Kit Operation

Low Flow Kit Operation

Group 15: Diagnostic Information

All Hydraulic Functions Slow

Hydraulic Oil Overheats

No Hydraulic Functions

No Hydraulic Functions—Electrical Checks

Function Does Not Stop When Control Lever Released

Load Drifts Down When Control Lever is in Neutral Position

Load Falls When Control Valve is Actuated To Raise Load

H/P (High Power) Function Does Not Operate, PWR (Power) Mode is Normal

Boom Down Does Not Function, Moves Slowly, or Is Erratic, All Other Functions Normal

Arm In Does Not Function, Moves Slowly, or Is Erratic, All Other Functions Normal

Swing Speed Slow During Arm In Function

Boom Cannot Raise Track Off Ground

Swing Function Does Not Operate in Both Directions

Swing Speed Slow in Both Directions

Swing Speed Slow or Does Not Operate in One Direction

Upperstructure Drift With Swing Valve in Neutral

Machine Freewheels Down an Incline

Track Will Not Move in Either Direction

Machine Mistracks

Machine Mistracks Left During Combined Travel and Dig Functions

Machine Will Not Shift Into Fast (Rabbit) Speed (S.N. —XXXXXX)

Machine Will Not Shift Into Fast (Rabbit) Speed (S.N. XXXXXX— )

Pump 1, Pump 2, and Pilot Pump Line Identification

Control Valve Line Identification

Swing Motor Line Identification

Pilot Control Valve-to-Pilot Signal Manifold Component Location—Excavator Pattern

Pilot Control Valve-to-Pilot Signal Manifold Component Location—Backhoe Pattern

Pilot Signal Manifold-to-Control Valve Line Connection

Travel System Component Location

Travel Hydraulic System Line Connection

Auxiliary Attachment Schematic

Auxiliary System Line Connections

Hydraulic System Schematic

Hydraulic System Component Location

Hydraulic System Line Connections

Fan Drive Hydraulic System Component Location—If Equipped

Fan Drive Hydraulic System Schematic—If Equipped

Group 25: Tests

JT05800 Digital Thermometer Installation

JT02156A Digital Pressure and Temperature Analyzer Kit Installation

General Hydraulic Oil Cleanup Procedure

Hydraulic Component Failure Cleanup Procedure

Hydraulic Oil Tank Pressure Release Procedure

Hydraulic Oil Warm-Up Procedure

Pilot Pressure Regulating Valve Test and Adjustment

Control Valve Spool Actuating Pilot Pressure Test

Dig Regenerative Solenoid Valve Test and Adjustment

Arm Regenerative Solenoid Valve Test and Adjustment

Power Dig/Travel Speed Solenoid Valve Test and Adjustment (S.N. XXXXXX— )

Power Dig Solenoid Valve Test and Adjustment (S.N. —XXXXXX)

Travel Speed Solenoid Valve Test and Adjustment (S.N. —XXXXXX)

Torque Control Solenoid Valve Test and Adjustment

Pump Control Pilot Pressure Signal Test

Main Relief and Power Dig Valve Test and Adjustment

Circuit Relief Valve Test and Adjustment

Swing Motor Crossover Relief Valve Test and Adjustment

Travel Motor Crossover Relief Valve Test and Adjustment

Pump Regulator Test and Adjustment—Minimum Flow

Pump Regulator Test and Adjustment—Maximum Flow

Pump Flow Test

Comprehensive Pump Flow Test

Swing Motor Leakage Test

Travel Motor Leakage Test

Cylinder Drift Test—Boom, Arm, and Bucket

Upperstructure Drift Test

Fan Drive Pump Flow Test—If Equipped

Fan Speed Test—If Equipped

Section 9031: Heating and Air Conditioning

Group 05: Theory of Operation

Air Conditioning System Cycle of Operation

Group 15: Diagnostic Information

Air Conditioning System Does Not Operate

Air Conditioning System Does Not Cool Interior of Cab

Air Conditioning System Runs Constantly, Too Cold

Heating System Does Not Operate

Heating System Does Not Warm Interior of Cab

Interior Windows Continue to Fog

Heater and Air Conditioner Component Location

Group 25: Tests

R134a Refrigerant Cautions and Proper Handling

R134a Oil Charge Capacity

R134a Refrigerant Charge Capacity

Heater and Air Conditioner Operational Checks

Air Conditioner Compressor Clutch Test

R134a Refrigerant Leak Test

R134a Refrigerant Hoses and Tubing Inspection

Air Conditioner High/Low-Pressure Switch Test

Air Conditioner Freeze Control Switch Test

Air Conditioning System Test

Operating Pressure Diagnostic Chart

Air Conditioner Compressor Belt Check and Adjustment

Section 9900: Dealer Fabricated Tools

Group 99: Dealer Fabricated Tools

DFT1218 Split Flange Hose Cap

John Deere 250GLC Excavator Service Manual - TM13078X19 (Operation & Test)