John Deere 240DLC and 270DLC Excavator Diagnostic Operation and Test Manual (TM2320)

John Deere 240DLC and 270DLC Excavator Diagnostic Operation and Test Manual (TM2320 26FEB15)

This official John Deere diagnostic manual provides in-depth troubleshooting, testing procedures, and system analysis for the 240DLC and 270DLC excavators. It includes detailed diagnostic codes, sensor and solenoid testing, hydraulic system evaluations, and controller communication diagnostics, making it an essential resource for technicians and machine operators.

File Format: PDF

Size: 78.90 MB

No. of pages: 1187

Language: English

Delivery Method: Instant Download – Access your file immediately after purchase.

📑 Table of Contents Overview:

General Information & Safety Guidelines

• Machine operation safety and service precautions
• Battery handling, fluid disposal, and fire prevention
• Personal protective equipment and worksite hazards

Electronic Control & Diagnostic Systems

• Main Controller (MCF) and Engine Control Unit (ECU) diagnostic trouble codes
• Controller Area Network (CAN) signal troubleshooting
• Sensor voltage, resistance, and short circuit diagnostics
• Monitor Controller (MON) and Air Conditioner Controller (ACF) testing

Engine Performance & Testing

• PowerTech Plus™ 4.5L and 6.8L engine troubleshooting
• Fuel system and air intake diagnostics
• Turbocharger boost pressure and exhaust emissions monitoring

Hydraulic System Analysis

• Main hydraulic pump pressure and relief valve testing
• Pilot pressure regulation and flow rate evaluations
• Swing motor, track drive, and attachment hydraulic diagnostics

Power Train & Undercarriage Evaluation

• Track adjuster and sprocket wear measurement
• Travel motor performance testing and leakage diagnostics
• Gearbox lubrication system inspection

Operational Checkout & System Calibration

• Monitor display error code retrieval and clearance
• Travel speed, boom lift, and bucket function testing
• Swing brake engagement and dynamic braking verification

Heating & Air Conditioning System

• R134a refrigerant handling and pressure diagnostics
• Blower motor and compressor clutch operation testing
• Cab ventilation system efficiency evaluation

For complete service information, also see:

240DLC and 270DLC Excavator .......... TM2323
Alternators and Starting Motors .......... CTM77
PowerTech Plus 4.5L and 6.8L Diesel Engines Level 14 Electronic Fuel System With Denso HPCR .......... CTM320
Super Caddy Oil Cleanup Procedure .......... CTM310
PowerTech 4.5L & 6.8L Diesel Engines Tier 1/Stage I, Tier 2/Stage II, Tier 3/Stage IIIA, Tier 3/Stage IIA, Tier 3/Stage III (Base Engine) .......... CTM104
JDLink/ZXLink Machine Monitoring System .......... CTM10006
JDG10274 Ultrasonic Undercarriage Measurement Gauge .......... CTM10001

This John Deere 240DLC and 270DLC Excavator Diagnostic Operation and Test Manual is an essential guide for service professionals, providing precise troubleshooting and calibration procedures for optimal machine performance.