JLG scissor lifts are essential pieces of equipment in various industries, providing safe and efficient access to elevated work areas. Proper maintenance and timely repairs are crucial for ensuring the longevity, safety, and optimal performance of these machines. This comprehensive guide will cover everything you need to know about JLG scissor lift maintenance and repair, from routine checks to complex troubleshooting.
Understanding JLG Scissor Lifts
JLG Industries is a leading manufacturer of aerial work platforms, including a wide range of scissor lifts. These lifts are designed for both indoor and outdoor use, offering varying working heights and load capacities. Before delving into maintenance and repair, it’s important to understand the different types of JLG scissor lifts:
| Type | Power Source | Typical Use | Key Features |
|---|---|---|---|
| Electric Scissor Lifts | Battery-powered | Indoor applications | Quiet operation, zero emissions |
| Hydraulic Scissor Lifts | Electric or engine-powered hydraulic system | Indoor and outdoor use | Higher lifting capacities |
| Rough Terrain Scissor Lifts | Diesel or dual fuel engines | Outdoor construction sites | All-terrain capabilities |
Key Components of JLG Scissor Lifts
To effectively maintain and repair a JLG scissor lift, it’s essential to understand its main components:
- Scissor mechanism
- Platform
- Base
- Power system (battery, engine, or hydraulic)
- Control system
- Wheels and steering
Routine Maintenance for JLG Scissor Lifts
Regular maintenance is crucial for preventing breakdowns and ensuring safe operation. Here’s a comprehensive maintenance checklist:
Daily Inspections
- Check battery charge levels (for electric models)
- Inspect hydraulic fluid levels and look for leaks
- Examine tires for wear and proper inflation
- Test all controls and emergency stop functions
- Inspect the scissor arms for any visible damage or wear
- Check the platform and guardrails for integrity
Monthly Maintenance
- Lubricate all pivot points and sliding surfaces
- Clean and tighten battery connections (for electric models)
- Inspect and clean electrical connections
- Check and adjust chain tension
- Examine all hoses and fittings for wear or damage
Quarterly Maintenance
- Change hydraulic oil and filters
- Inspect and adjust brake system
- Check and tighten all bolts and fasteners
- Conduct a thorough inspection of the scissor mechanism
- Test load and tilt sensors
Annual Maintenance
- Perform a comprehensive inspection of all structural components
- Replace hydraulic oil and filters
- Conduct a full load test
- Inspect and replace worn components as necessary
- Update software and calibrate sensors
Common JLG Scissor Lift Problems and Solutions
Even with regular maintenance, issues can arise. Here are some common problems and their potential solutions:
Lift Won’t Raise or Lower
Possible causes:
- Low hydraulic fluid
- Faulty lift cylinder
- Damaged or worn scissor arms
Solutions:
- Check and replenish hydraulic fluid
- Inspect lift cylinder for leaks or damage
- Examine scissor arms for wear or misalignment
Erratic Movement
Possible causes:
- Contaminated hydraulic fluid
- Worn control valves
- Loose or damaged wiring
Solutions:
- Flush and replace hydraulic fluid
- Inspect and replace control valves if necessary
- Check all electrical connections and wiring
Battery Issues (Electric Models)
Possible causes:
- Sulfated or worn-out batteries
- Faulty charger
- Loose connections
Solutions:
- Test battery capacity and replace if necessary
- Check charger output and functionality
- Clean and tighten all battery connections
DIY Repair Tips for JLG Scissor Lifts
While some repairs require professional expertise, there are several maintenance tasks you can perform yourself:
- Replacing hydraulic fluid and filters: Follow the manufacturer’s guidelines for the correct type and amount of fluid.
- Lubricating moving parts: Use a high-quality grease to lubricate all pivot points and sliding surfaces.
- Cleaning and tightening electrical connections: Ensure all connections are clean, tight, and free from corrosion.
- Adjusting chain tension: Proper chain tension is crucial for smooth operation. Consult the manual for the correct tension specifications.
- Replacing worn tires: Ensure you use the correct tire type and size for your specific model.
When to Seek Professional Help
While routine maintenance can often be handled in-house, certain situations require professional assistance:
- Complex hydraulic system repairs
- Electrical system troubleshooting
- Structural repairs or welding
- Annual inspections and certifications
- Major overhauls or rebuilds
Choosing a Reliable JLG Scissor Lift Repair Service
When professional help is needed, selecting the right repair service is crucial. Consider the following factors:
- Certification and training: Ensure technicians are certified and trained specifically for JLG equipment.
- Experience: Look for a service provider with a proven track record in repairing scissor lifts.
- Availability: Choose a service that offers quick response times and emergency repairs.
- Parts availability: Verify that the repair service has access to genuine JLG parts.
- Warranty: Inquire about warranties on parts and labor.
- Customer reviews: Check online reviews and ask for references from other customers.
Preventive Maintenance: The Key to Longevity
Implementing a robust preventive maintenance program is the best way to ensure the longevity and reliability of your JLG scissor lift. This includes:
- Adhering to the manufacturer’s recommended maintenance schedule
- Keeping detailed maintenance records
- Training operators on proper use and daily inspections
- Addressing minor issues promptly before they escalate
- Utilizing telematics and remote monitoring systems for proactive maintenance
By following these guidelines and staying proactive in your maintenance approach, you can significantly extend the life of your JLG scissor lift, reduce downtime, and ensure safe operation for years to come.
FAQs
What is the average lifespan of a JLG scissor lift? With proper maintenance, a JLG scissor lift can last 10-15 years or more. Regular servicing and timely repairs are key to maximizing lifespan.
How often should hydraulic oil be changed in a JLG scissor lift? Hydraulic oil should typically be changed annually or every 1000 hours of operation, whichever comes first. Always consult your specific model’s manual for exact recommendations.
Can I use aftermarket parts for JLG scissor lift repairs? While aftermarket parts may be cheaper, using genuine JLG parts is recommended to ensure optimal performance and maintain warranty coverage.
What should I do if my JLG scissor lift won’t start? First, check the battery connections and charge level. If the issue persists, inspect fuses and the emergency stop button before seeking professional help.
How can I prevent rust on my JLG scissor lift? Regularly clean the lift, especially after use in harsh environments. Apply a rust inhibitor to exposed metal surfaces and store the lift in a dry area when not in use.