7 Common Liftgate Failures and How to Fix Them

Liftgates are indispensable for many heavy-duty vehicles, making loading and unloading a breeze. However, like any mechanical component, they can encounter issues that may leave you in a bind. Here, we’ll delve into seven common liftgate failures and how to fix them so your operations keep rolling strong, no matter what. 

1. Hydraulic System Leaks

Identifying the Issue

Hydraulic leaks are perhaps the most common problem with liftgates. You'll notice this when there's a decrease in liftgate performance or visible fluid around the hydraulic lines.

Fixing the Leak

First, identify the source of the leak, whether it's a worn-out hose or a faulty seal. Replace any damaged parts and ensure all connections are secure. Regularly checking the hydraulic fluid level and using the manufacturer-recommended fluid can prevent future leaks.

2. Electrical Failures

Spotting Electrical Problems

Electrical issues often manifest as a non-responsive liftgate. This could be due to a dead battery, corroded connectors, or faulty wiring.

Resolving Electrical Issues

Start by inspecting the battery and connections for corrosion or loose fittings. Clean and tighten as necessary. If the battery is in good condition, trace the wiring to locate any damage or disconnections. 

Replacing corroded connectors and repairing damaged wires can restore liftgate functionality.

3. Motor Malfunctions

Recognizing Motor Issues

A malfunctioning motor can lead to sluggish or non-operational liftgates. Unusual noises or overheating are typical signs.

Fixing the Motor

Ensure the motor receives adequate power by checking the electrical connections. If the problem persists, the motor may need professional repair or replacement. Regular maintenance and avoiding overloading the liftgate can prolong the motor's life.

4. Control Switch Failures

Detecting Control Switch Problems

If the liftgate doesn’t respond to the control switch, the issue might lie within the switch itself or its connections.

Addressing Control Switch Failures

Inspect the switch for wear or damage and replace it if necessary. Ensure all wiring connections to the switch are secure. Regularly cleaning the switch can prevent dirt and grime build-up, which often leads to malfunction.

5. Broken Lift Chains

Identifying Lift Chain Issues

Broken or worn lift chains can cause uneven lifting or complete liftgate failure. Regular inspections can help spot this issue early.

Repairing Lift Chains

Replace broken or significantly worn chains immediately. Ensure the new chains are properly lubricated and tensioned. Periodic lubrication and tension adjustments can extend the life of lift chains.

6. Liftgate Misalignment

Spotting Misalignment

A misaligned liftgate may not close properly or might operate unevenly. This can result from regular use or impacts.

Fixing Misalignment

Realign the liftgate according to the manufacturer's instructions, usually involving adjusting the mounting brackets and ensuring all components are properly secured. Regular checks and adjustments can keep the liftgate operating smoothly.

7. Rust and Corrosion

Recognizing Rust and Corrosion

Rust and corrosion can weaken the liftgate structure, especially in older models or those frequently exposed to harsh weather conditions.

Combating Rust and Corrosion

Clean and inspect the liftgate regularly. Treat rust spots with a rust inhibitor and repaint the affected areas. Regular application of protective coatings can prevent future corrosion, especially in critical joints and moving parts.

Conclusion

Maintaining a liftgate in top condition requires regular inspection and prompt repairs. By understanding common liftgate failures and their fixes, you can minimize downtime and extend the life of your equipment. Remember, regular maintenance is key to avoiding these issues altogether. 

If you need professional liftgate repair and maintenance, don't hesitate to reach out to experts in Brea, CA, who specialize in liftgate repair and maintenance.