Common malfunctions and troubleshooting methods of aerial vehicles
| Fault phenomenon | cause of issue | Remedy |
| Power device vibration | Drive shafts are different or unbalanced | Overhaul adjustment |
| Loose coupling | Overhaul adjustment | |
| Not fixed | Fastening | |
| Rotary reducer overheated | Lack of oil | Add lubricant |
| Rotary reducer impact noise | Incorrect mounting of gears, severe wear of gears or bearings | Adjust the replacement |
| Rotary reducer leak | Damaged seal gasket | replace |
| Axle bad, wear | Repair replacement | |
| Too much lubricant | Remove oil | |
| Slewing ring vibration or noise | Ring or pinion abnormal wear | replace |
| Ball or pad damage | replace | |
| Lack of oil | Refuel | |
| Working arm clevis, working turret, and subframe crack or deformation | Bad material or bad welding | Structure strengthening |
| Improper use, overload and shock | Correct distortion, change | |
| Hydraulic system oil leak | Loose fittings | Fastening |
| Damaged seal | replace | |
| Broken pipe | Welding replacement | |
| Oil pressure does not rise, oil temperature is too high | The fluid level of the tank is too low and the oil filter plug is blocked | Refuel or check |
| Pressure relief valve opening pressure too low | Adjust overflow valve | |
| Pump damage or leakage is serious | Repair or replace | |
| Excessive leakage of pressure and return lines or excessive leakage of hydraulic components | Repair or replacement, proper shutdown cooling | |
| Severe hydraulic system noise | There is air in the pipeline | Repetitive operation exhaust |
| Low oil temperature | Low speed conversion oil | |
| Pipes and components not fixed and fastened | Fastening | |
| Balancing valve failure | Adjustment and overhaul | |
| Filter plug | Cleaning | |
| Falling arm, shrunk arm, excessive oil pressure or vibration | Balance valve signal hole jam | Cleaning balance valve |
| Excessive friction between arms or foreign body | Inspection, adjustment, lubrication | |
| There is air in the cylinder | Repeated movement exhaust | |
| Telescopic arm steel wire length inappropriate | Adjust rope length | |
| The top arm does not reach or shrink | Outrigger lock seal is not good | Overhaul |
| Outrigger failure | Cylinder leakage | Overhaul seals |
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