Aerial work platforms are essential high-altitude equipment widely used in building construction, factory maintenance, venue renovation, municipal engineering and other industries, including scissor lifts, articulated boom lifts, straight boom lifts and other models. Long-term high-frequency operation without standardized maintenance will easily cause various malfunctions such as weak lifting, hydraulic oil leakage, battery failure, jolty driving and invalid safety protection devices. These failures will not only delay construction schedules, but also bring severe safety risks for aerial operations. Standard daily maintenance of aerial work platforms is the key to extending equipment service life, reducing failure rates and guaranteeing operation safety.

1. Daily Pre-Shift Inspection & Maintenance (Must Complete Before Each Shift)

All operators need to finish this simple inspection before startup every day to cut down equipment breakdowns effectively.

1. Structural Visual Check

Examine the whole machine frame, lift arms and scissor arms for deformation, cracks and severe abrasion; confirm all bolts and pin shafts are tightly fastened without falling off; check the platform guardrails, anti-slip plates and safety chains are intact and firm.

2. Tires & Driving System Inspection

Check tires for cuts, bulges and air leakage, remove gravel and debris stuck on treads; ensure drive wheels rotate smoothly without jamming or abnormal noise.

3. Hydraulic System Inspection

Check if hydraulic oil level stays between the minimum and maximum scale marks; inspect oil cylinders, hoses and pipe joints for oil seepage or leakage; observe piston rods for scratches and corrosion.

4. Electrical & Safety Device Test

For electric scissor lifts, check battery power level and clean corroded terminals; test emergency stop buttons on both platform and ground control panels to confirm power cuts off instantly after pressing.

Verify upper limit stop, tilt alarm and overload protection functions can trigger automatic shutdown with warning sounds. Test warning lights, horns and manual emergency lowering valves to ensure normal operation.

5. Brake & Travel Test

Test forward, reverse and steering functions on flat ground; check brakes work reliably without sliding or stuck movement.

2. Weekly Maintenance (Every 50 Working Hours)

1. Inject lubricating grease into all movable pin shafts and scissor hinge points to eliminate abnormal noise during lifting.

2. Thoroughly clean dust inside battery compartments, wipe terminals and coat with vaseline to prevent oxidation.

3. Remove dust on hydraulic tank exterior and filter surfaces, check high-pressure hoses for aging and cracking.

4. Clean the entire control panel to fix unresponsive or stuck buttons.

5. Check the smooth extension and retraction of outriggers for boom lifts, clear sundries under support pads.

3. Monthly In-Depth Maintenance (Every 200 Working Hours)

1. Hydraulic System Service

Take hydraulic oil samples for inspection; replace oil and filters in advance if the fluid turns black, emulsified or mixed with impurities. Retighten all hydraulic pipe joints and replace slightly aged hoses.

2. Drive & Brake System Adjustment

Check lubricant level of gearboxes, measure brake pad wear thickness and adjust brake tightness if abrasion exceeds standard limits.

3. Full Circuit Inspection

Sort out all vehicle cables, repair wires with broken outer sheaths and fasten loose terminals. Test signal stability of all sensors.

4. Safety Device Calibration

Recalibrate overload weighing systems and tilt sensors to guarantee the machine locks lifting functions automatically when overloaded or working on sloped ground.

4. Annual Overhaul Maintenance (Every 1000 Working Hours / 12 Months)

1. Drain all old hydraulic oil, clean the oil tank thoroughly, replace hydraulic filters and fill with manufacturer-specified anti-wear hydraulic oil.

2. Disassemble and inspect high-stress welding seams on scissor arms and boom sections, conduct non-destructive testing if necessary.

3. Complete full charge-discharge cycle test for battery packs; replace whole battery groups if capacity declines seriously. For diesel boom lifts, replace engine oil, air filters and water-oil separators.

4. Full load lifting test: run the machine under rated load for 30 minutes to verify lifting stability and safety performance.

5. Replace high-pressure hydraulic hoses and aging sealing oil seals that have been used for more than 2 years to eliminate leakage risks.

6. File all maintenance records and inspection reports for annual equipment inspection and safety supervision check.

5. Maintenance Differences Between Electric Scissor Lifts & Diesel Boom Lifts

Electric Self-propelled Scissor Lifts (Indoor Factory, Supermarket Maintenance)

- Core maintenance focus: Lead-acid battery care. Avoid long-term storage with low power; fully charge batteries after daily work to prevent permanent capacity attenuation.

- Vulnerable parts: Drive motor carbon brushes, shock-absorbing rubber blocks and small hydraulic oil seals, check for oil leakage monthly.

Diesel Articulated & Straight Boom Lifts (Outdoor Construction, Steel Structure Projects)

- Core maintenance focus: Engine oil, diesel filters and cooling water tank. Clean air filters weekly due to heavy outdoor dust.

- Vulnerable parts: Telescopic arm pin shafts, outrigger hydraulic cylinders and diesel pipelines; perform anti-rust treatment in rainy seasons.

6. Common Aerial Work Platform Faults & Solutions

1. Slow Lifting & Insufficient Lifting Force

Caused by insufficient/ contaminated hydraulic oil, blocked hydraulic filters or insufficient hydraulic pump pressure. Replace oil and clean filters during monthly maintenance to solve this issue.

2. Platform Sinks Slowly After Lifting

Failed hydraulic lock or aging cylinder oil seals. Replace sealing parts during annual overhaul; never carry out high-altitude work with faulty equipment.

3. Batteries Lose Power Rapidly

Oxidized terminals or damaged single battery cells. Clean terminals weekly and test battery capacity yearly to replace defective batteries timely.

4. Driving Deviation & Brake Failure

Uneven tire pressure, worn brake pads or air intake inside brake oil lines. Test braking function in daily pre-shift inspection and adjust brake clearance monthly.

5. Unresponsive Limit Switches

Dust accumulated on sensors or loose wiring. Clean safety switches weekly and recalibrate sensing devices monthly.

7. Key Mistakes to Avoid During Aerial Lift Maintenance

1. Mixing different types of hydraulic oil will block oil circuits and wear hydraulic pumps severely. Only use hydraulic oil designated by the manufacturer.

2. Skipping daily pre-shift inspection may turn minor defects into fatal safety accidents, and uninspected equipment can be sealed by safety supervision departments.

3. Batteries stored for more than 3 days without full charge will suffer irreversible power attenuation.

4. Operating lifts without lubricating hinge points will cause severe abrasion of pin shafts, leading to extremely high replacement costs.

5. Missing written maintenance logs and inspection records will result in failure to pass annual special equipment inspection.

8. FAQ About Aerial Work Platform Maintenance

Q1: How often should we replace hydraulic oil for aerial work platforms?

A: Replace hydraulic oil every 1000 working hours or 1 year for indoor electric lifts. For diesel lifts working in dusty outdoor sites, replace oil every 600-800 hours in advance if oil turns black or emulsified.

Q2: Can factory staff finish monthly maintenance without professional technicians?

A: Operators can complete daily and weekly basic maintenance independently. Annual overhaul, load testing and weld flaw detection must be operated by certified professional repair technicians.

Q3: What maintenance tips for aerial lifts in low-temperature winter environments?

A: Switch to low-temperature hydraulic oil, keep batteries warm, and perform 3-5 no-load lifting cycles to preheat hydraulic systems before formal operation to avoid lifting jams and cylinder damage under cold conditions.

Q4: How to standardize maintenance management for rental companies with mass aerial lifts?

A: Establish working hour logs for each machine, record daily and monthly maintenance time separately, replace filters and lubrication accessories in batches, and conduct unified battery testing regularly.

Conclusion

Standardized maintenance is the core guarantee for safe and long-term operation of aerial work platforms. Whether you own lifting equipment for factory use, run an aerial lift rental business or work in construction teams, building a hierarchical maintenance log and strictly implementing full-cycle maintenance from daily to annual service can effectively avoid safety hazards and cut overall equipment operation costs.

If you need matching maintenance spare parts for scissor lifts and boom lifts, or on-site professional maintenance service, feel free to contact us for customized equipment care solutions.