7 Common Liftgate Repairs You Can’t Ignore

Here are seven common liftgate repairs that fleet managers, owner-operators, and technicians simply cannot afford to ignore.

1. Hydraulic Cylinder Leaks

The hydraulic cylinder is the backbone of your liftgate’s lifting power. Over time, seals wear out, rods get nicked, and fluid leaks begin to form.

Symptoms:

• Jerky or slow lifting
• Visible fluid on the ground or around the shaft
• Low hydraulic reservoir levels

Why You Can’t Ignore It: A leaking cylinder means pressure loss — and without pressure, your liftgate can’t lift. Worse, the system may overheat or burn out trying to compensate.

Actionable Advice: Schedule seal replacements during routine maintenance and inspect cylinder rods for scoring or corrosion every 90 days.

2. Worn or Stretched Lift Chains

Chains carry the weight of the gate. Constant load-bearing can stretch them out or wear the links, especially if they're not properly lubricated.

Symptoms:

• Slack or sagging chain
• Chain noise during operation
• Inconsistent lift height

Why You Can’t Ignore It: A stretched chain can snap under load. Not only is that a serious safety hazard, it’ll sideline your truck and potentially injure workers.

Actionable Advice: Replace lift chains once they’ve stretched more than 3% of their original length. Lubricate regularly and inspect for rust or binding.

3. Malfunctioning Liftgate Switches

Control switches endure constant abuse — they're out in the weather, exposed to vibration, and used frequently. Over time, contacts corrode and wires loosen.

Symptoms:

• Intermittent or no response when activated
• Need to “wiggle” the switch to get power
• Partial operation (lift but no lower)

Why You Can’t Ignore It: A failed switch will leave your gate inoperable at the worst possible moment — mid-delivery, mid-winter, or both.

Actionable Advice: Always keep a spare control switch in the truck. Inspect wiring for corrosion or exposed copper during quarterly maintenance.

4. Damaged Electrical Wiring

Lift gates are only as good as the wires controlling them. Frayed, corroded, or poorly routed wiring reduces voltage and stresses the entire system.

Symptoms:

• Sluggish movement
• Blown fuses or tripped breakers
• Burnt smell near the battery box or motor

Why You Can’t Ignore It: Poor electrical flow damages the motor and can lead to total system failure. In some cases, it can even cause electrical fires.

Actionable Advice: Use marine-grade wiring and sealed connectors. Rewrap and route wires away from moving or hot components. Inspect battery leads for corrosion and clean terminals routinely.

5. Worn Out Platform Hinges and Pins

The platform must fold, unfold, and pivot smoothly. Over time, pins seize up, hinges wear, and movement becomes restricted.

Symptoms:

• Grinding noises
• Misalignment
• Resistance during platform deployment

Why You Can’t Ignore It: A jammed platform is a safety hazard and a liability. If the gate won’t deploy fully, it’s essentially unusable.

Actionable Advice: Grease all pivot points as part of your CVIP inspection routine. Replace worn pins and bushings before they cause frame misalignment or bending.

6. Faulty Hydraulic Pump Motor

The motor drives the pump, which pressurizes your fluid. It's a high-draw, high-stress component that’s prone to failure without proper maintenance.

Symptoms:

• Clicking but not lifting
• Burnt odor
• Motor runs but liftgate doesn't move

Why You Can’t Ignore It: If the motor fails, you’re dead in the water — no power, no lift. Often, these fail without warning if preventive checks are skipped.

Actionable Advice: Listen for unusual sounds, test the motor amp draw under load, and monitor performance trends. A struggling motor today will be a dead motor tomorrow.

7. Alignment and Structural Damage

Liftgates get bumped, bent, and abused — whether it’s careless forklift operation or icy road impacts. Over time, frames can warp and alignment goes out the window.

Symptoms:

• Gate doesn’t sit flush
• Platform drifts while lowering
• Visible twist or warping

Why You Can’t Ignore It: Structural issues not only affect usability, they accelerate component failure and put your crew at risk.

Actionable Advice: Train drivers to inspect the gate’s alignment weekly. Catching minor tweaks before they grow into major damage can save thousands in repairs.

Stay Ahead of Liftgate Issues

From failing hydraulics to damaged wiring, these liftgate issues are more than minor inconveniences — they’re serious risks to uptime, safety, and profitability. Implementing a proactive inspection program (especially as part of your CVIP Inspection) is the best way to prevent emergencies and keep your operation rolling smoothly.

If you require liftgate repairs in Delta, BC, reach out to our team at Freeway Truck Repair today.