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E
eholderJul 25, 2025
Why is there excessive noise and vibration in my JLG 1850SJ Boom Lifts?
- CCatherine Miller DVMJul 25, 2025
Excessive noise and vibration in JLG Boom Lifts can stem from several issues. Insufficient hydraulic fluid may cause system noise, so ensure the reservoir is filled to the correct level and that the oil supply to the motor is adequate and unobstructed. Trapped air in the system lines or motor can also lead to noise; make sure all lines and components are purged of air. A loose or incorrect shaft coupling can produce vibrations, so verify the correct coupling is used and properly fitted on the shaft. Misaligned shafts can create excessive frictional vibration, so ensure shafts are properly aligned. Finally, hydraulic oil with viscosity above acceptable limits can cause system noise, so replace the hydraulic oil with the appropriate fluid for the operating conditions.
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