What are the routine maintenance items for electric aerial work platforms?

What are the routine maintenance items for electric aerial work platforms?

The core of daily maintenance for electric aerial work platforms lies in conducting daily inspections, cleaning, lubrication, and functional tests on five major systems: battery/electronic control, hydraulics, structural components, safety devices, and travel/braking. This ensures that each system is free from leaks, looseness, and abnormalities, and is always in a safe and effective condition.

1. Daily/Pre-Operation Inspection (Mandatory)

1. Appearance and Structure

Clean the vehicle body, work platform, scissor lift/boom, outriggers, and chassis, removing surface oil, mud, and debris.

Inspect structural components for deformation, cracks, weld defects, or rust; guardrails, floor plates, and safety chains should be secure and intact.

Inspect all bolts/pins on the outriggers, boom, platform, slewing mechanism, and chassis, ensuring they are not loose, missing, or damaged.

2. Battery and Electrical System (Electric Core)

Check the battery level display, ensuring the battery level is ≥30% before operation.

Inspect the battery box, terminals, and wiring harness: ensure there is no damage, looseness, corrosion, water ingress, or overheating.

Test the emergency stop button, operating handles/buttons, indicator lights, horn, warning lights, and tilt/overload alarm devices.

Cables should not be pinched, aged, or have damaged insulation; connectors should be securely connected.

3. Hydraulic System

Hydraulic oil level should be maintained between the MIN and MAX marks; the oil should be clear, without emulsification or impurities. 

Inspection of hydraulic cylinders, oil pipes, joints, valve blocks, and hydraulic pump:No leaks found.

Test lifting, telescopic, and slewing movements under no-load conditions:Smooth operation, no shaking, abnormal noise, or crawling.

4.Safety Devices (Mandatory Test):

Emergency descent and emergency retraction functions are normal.

Limit switches, fall arrestors, tilt protection, overload protection, and outrigger locking devices are effective.

Seat belt attachment points are intact; platform anti-slip performance is good, and clearances are normal.

5.Travel and Braking:

Tire pressure is normal, with no cuts, bulges, or abnormal wear.

Steering operation is flexible and without jamming; braking is reliable and without deviation.

6.No-load Function Test (Performed within safe area):

Test all movements sequentially: lifting, telescopic, slewing, luffing, travel, steering, and braking.

Check for abnormal noises, odors, abnormal heating, shaking, or sluggish movement.

II. Weekly/Regular Maintenance (Routine)

1. Lubrication (Critical)

Apply grease to all grease fittings on the boom, scissor lift, pins, outriggers, slewing mechanism, platform hinges, etc., according to the lubrication chart.

Wire rope (if applicable): Check for broken wires, loose strands, and rust, and apply anti-rust oil.

Check the oil level and for leaks in the reducer, chain, and gears.

2. Lead-acid Battery Deep Maintenance

Clean the battery surface and terminals, and tighten the terminal connections.

Check the electrolyte level (except for maintenance-free batteries), and add distilled water.

Perform equalization charging/capacity testing, and replace damaged cells promptly.

3. Hydraulic System and Filter Maintenance

Check the hydraulic oil quality and replace the hydraulic oil and filter every 500 hours/six months.

Clean or replace the breather cap and filter screen.

4. Tightening and Corrosion Prevention

Retighten bolts on critical components such as outriggers, slewing mechanism, boom, and chassis.

Apply rust-preventive paint and clean drainage holes.

III. Battery-Specific Specifications (Most Important for Electric Vehicles)

Charging: Use the original charger, choose a well-ventilated and dry environment, and keep away from fire; disconnect the power immediately after charging is complete.

Storage: Store in a dry and well-ventilated environment with a temperature ≥0℃; recharge monthly if not in use for extended periods.

Low Temperature: Preheat before charging or operation; avoid deep discharge.

Strictly Prohibited: Overcharging, prolonged storage in a discharged state, terminal short circuits, water ingress, and exposure to direct sunlight.

IV. Daily Prohibitions

Do not operate the equipment when it is malfunctioning, leaking, has loose parts, or is triggering alarms.

Do not overload, operate on an off-center basis, or exceed safe operating limits, as well as perform sudden stops or turns.

Do not directly wash the motor, electrical control system, battery, or junction box with water.

Do not operate without a license, violate regulations, or engage in risky operations.

V. Records and Handover

Complete the equipment inspection checklist daily; if any abnormality is found, immediately stop the machine and report for repair.

Perform tiered maintenance according to the equipment manufacturer's manual, 50/100/250/500/1000 hour intervals.