This comprehensive JLG Boom Lifts 340AJ Global Factory Service/Repair/Workshop Manual (P/N: 3121259) provides detailed instructions for maintaining, servicing, diagnosing, and repairing your JLG Boom Lifts 340AJ Global. The manual features step-by-step instructions, highly detailed exploded pictures and diagrams, offering clear visual guidance for completing repair tasks correctly and efficiently. All repair procedures are covered, ensuring you have the knowledge and resources you need to perform a wide range of maintenance and repair tasks. This manual is the same type of resource that your local JLG dealer or mechanic would use, providing you with professional-level information. The manual is organized into seven sections covering key aspects of the JLG Boom Lifts 340AJ Global: **Section 1: Specifications** This section outlines the technical specifications of the 340AJ Global, providing vital information for understanding the machine's design and capabilities. **Section 2: General** This section provides general information about the 340AJ Global, including safety precautions, troubleshooting tips, and general maintenance practices. **Section 3: Chassis & Turntable** This section focuses on the chassis and turntable components, covering maintenance, repair, and troubleshooting procedures specific to these systems. **Section 4: Boom & Platform** This section delves into the boom and platform components, providing detailed instructions for servicing, repairing, and troubleshooting issues related to these critical systems. **Section 5: Hydraulics** This section covers the hydraulic system of the 340AJ Global, providing a comprehensive guide to maintaining, troubleshooting, and repairing the hydraulic components. **Section 6: JLG Control System** This section offers in-depth information on the JLG control system, including troubleshooting, repair procedures, and understanding the operation of the control system. **Section 7: Basic Electrical Information & Schematics** This section provides essential electrical information and schematic diagrams, allowing you to diagnose electrical issues, understand wiring configurations, and conduct repairs effectively.

The JLG 340AJ Global Boom Lift is a versatile and powerful aerial work platform designed for a wide range of applications. This model features a 40-foot working height and a 34-foot horizontal reach, enabling operators to safely access elevated work areas. Its robust construction includes a heavy-duty chassis, a powerful hydraulic system, and a spacious platform with a 500-pound capacity, allowing for efficient work with multiple personnel or tools. The 340AJ Global utilizes a self-leveling platform, ensuring operator safety and stability even on uneven terrain. Additionally, its compact dimensions and easy maneuverability make it suitable for operation in tight spaces and confined areas. This boom lift features a range of user-friendly design elements, including intuitive controls, clear visibility, and a user-friendly interface. Its advanced safety systems, including a load sensor, outrigger sensors, and a pressure relief valve, ensure operator safety and prevent accidents. The 340AJ Global is powered by a reliable diesel engine, offering long operating hours and robust performance. Its robust design and durable components ensure a long service life, even in demanding environments. The JLG 340AJ Global Boom Lift is a highly sought-after aerial platform, renowned for its reliability, performance, and safety features. This manual, with the part number 3121259, serves as an essential resource for technicians and service personnel responsible for maintaining and repairing this crucial piece of equipment.