Lull 644E-42 S-N 17569 Service Manual

Lull 644E-42 S-N 17569 Forklift manual cover
Pages 846
Year 2012
Language(s)
English en

Lull 644E-42 S-N 17569 Forklift Specification

The Lull 644E-42 S-N 17569 Forklift is a high-performance telehandler designed to meet diverse material handling needs in construction and industrial settings. It features a robust 99 horsepower Cummins QSF3.8 Tier 4 Final diesel engine, providing reliable power and efficiency. The machine boasts a maximum lift capacity of 6,000 pounds and a maximum lift height of 42 feet, enabling it to handle substantial loads with ease.

This telehandler is equipped with a three-section telescopic boom, which offers an extended reach and precise load placement capabilities. It includes a patented horizontal load placement system, ensuring enhanced operator control and stability when positioning loads at height. The hydraulic system is designed for responsive and smooth operation, allowing for precise maneuverability in tight spaces and challenging terrains.

The Lull 644E-42 features all-wheel steering with three steering modes: front-wheel, coordinated, and crab steering, enhancing its versatility and adaptability on various job sites. The cab is ergonomically designed to provide maximum comfort and visibility for the operator, featuring intuitive controls and comprehensive instrumentation for ease of use.

Safety is a paramount consideration, with the machine incorporating a range of safety features including a frame leveling system, which adjusts up to 10 degrees left or right to maintain stability on uneven ground. The telehandler is also fitted with stabilizers to provide additional support when handling heavy loads at extended heights.

Maintenance and serviceability are streamlined with easy access to key components and a centralized lubrication system, reducing downtime and ensuring optimal performance. The Lull 644E-42 S-N 17569 Forklift is engineered to deliver robust, reliable, and versatile performance, making it a valuable asset for any material handling operation.

Lull 644E-42 S-N 17569 Forklift F.A.Q.

How do I perform a pre-operation inspection on the Lull 644E-42 forklift?

Begin with checking the fluid levels, including engine oil, hydraulic oil, and coolant. Inspect the tires for proper inflation and damage. Check all lights, mirrors, and warning devices for proper operation. Finally, ensure that the forks and carriage are in good condition.

What should I do if the forklift is not starting?

First, check the battery connections and ensure they are clean and secure. Verify that the battery is charged. Inspect the starter and ignition system for any visible issues. If the problem persists, consult the service manual or contact a qualified technician.

How can I troubleshoot hydraulic issues on the Lull 644E-42 forklift?

Check for any visible leaks in the hydraulic lines and connections. Ensure that the hydraulic fluid level is adequate. Examine the hydraulic pump and control valves for any signs of wear or damage. Consider consulting the hydraulic circuit diagram for further troubleshooting.

What is the recommended maintenance schedule for the Lull 644E-42 forklift?

Regular maintenance should include daily inspections, lubrication of moving parts every 50 hours, oil and filter changes every 250 hours, and a comprehensive inspection and service every 1,000 hours. Always refer to the operator's manual for detailed maintenance intervals.

How do I adjust the forks on the Lull 644E-42 forklift?

To adjust the forks, first ensure the forklift is on a level surface and the engine is off. Manually slide the forks along the carriage to the desired position, making sure they are evenly spaced. Lock them securely using the locking pins.

What are the common causes of overheating in the Lull 644E-42 forklift?

Common causes of overheating include low coolant levels, a malfunctioning thermostat, a clogged radiator, or a failing water pump. Regular inspection and maintenance of the cooling system can prevent overheating issues.

How can I improve the fuel efficiency of the Lull 644E-42 forklift?

Ensure the forklift is regularly maintained, including timely oil and filter changes. Keep tires properly inflated and reduce idle time. Train operators on efficient driving practices to minimize fuel consumption.

What steps should I take if the forklift's steering is unresponsive?

Check the hydraulic fluid level and look for any leaks in the steering system. Inspect the steering linkage for wear or damage. If necessary, have a professional technician assess the hydraulic pump and control valves.

How do I replace the air filter on the Lull 644E-42 forklift?

Locate the air filter housing and remove the cover. Take out the old air filter and clean any debris from the housing. Insert the new air filter, ensuring it is seated correctly, and replace the cover securely.

What should I check if the forklift is making unusual noises?

Identify the source of the noise and check for loose or damaged parts in that area. Inspect the engine, transmission, and hydraulic systems for issues. Consider lubricating moving parts and seek professional assistance if the noise persists.