What Causes the Transmission Noise When Braking and Restarting the New Magotan?
2 Answers
Transmission noise may be caused by bearing wear and damage, insufficient lubricating oil, or loose bolts. Bearing wear and damage: When bearings wear out, the gap increases, and the fit accuracy decreases; when bearings are damaged, abnormal sounds occur as they cannot operate normally, potentially damaging transmission components and exacerbating the issue. This can also result from the wear of transmission components or the use of replacement parts with excessively low precision, such as worn gears or new gears with excessively large fit gaps. Insufficient lubricating oil or excessively high viscosity causing poor lubrication: In such cases, the corresponding lubricating oil (grease) should be replaced; otherwise, it will accelerate transmission wear and shorten its service life. Loose bolts on the transmission housing (end cover): Vibrations during use can loosen the bolts, so regular inspections are recommended.
Our new Magotan had the same issue during its last maintenance. The technician said it's a common problem with dual-clutch transmissions. When braking at low speeds and starting again, the clutch re-engages, which can cause a clicking sound. Also, check if the transmission fluid level is normal, as deteriorated fluid can lead to insufficient lubrication and abnormal noises. Worn-out half-shaft universal joints can also produce similar sounds, especially when starting during turns. These are all mechanical wear issues. It's recommended to maintain the transmission regularly and use the auto-hold function in city traffic to reduce frequent starts.
