What are the symptoms of a broken differential?
3 Answers
When the differential is broken, the following symptoms may occur: 1. During turns, the outer wheel may experience slipping while the inner wheel may experience skidding. 2. Even when driving straight, wheel slippage can occur due to uneven road surfaces or differences in tire rolling radii (caused by manufacturing tolerances, uneven wear, uneven load distribution, or varying tire pressures). Functions of the transmission differential: 1. Transmitting power from the transmission to both left and right wheels; 2. Allowing the left and right wheels to rotate at different speeds during turns. For four-wheel-drive vehicles, the center differential also enables the front and rear wheels to rotate at different speeds or maintain the same speed.
Last time my SUV suddenly made a clanking noise when turning on a country road. At first I thought it was just a stone stuck in the tire tread, but the sound kept getting louder. When we lifted it at the repair shop, we found oil leaking from the differential housing. The mechanic said there was abnormal meshing of the planetary gears inside. The most obvious symptom was severe rear wheel slippage during acceleration, and the entire rear end felt like it was drifting when cornering in the rain. Now during every maintenance service, I have to remind the technician to thoroughly check the differential oil - repairing this thing costs several thousand if it fails. If you hear any metal grinding sounds from the chassis or abnormal noises when turning, don't tough it out for half a month like I did before getting it fixed.
I often encounter differential failure cases in the repair shop year-round. Simply put, there are three typical symptoms: First, the tires hop during turns, especially during low-speed right-angle turns when you can hear clicking sounds. Second, there's intermittent power delivery during acceleration on flat roads, as if the rear axle is being tugged. Third, the differential temperature rises abnormally, and you can smell a burnt odor at traffic lights. Last week, an off-road vehicle had its differential seize up completely after long-term mudding caused the oil seal to rupture and the gear oil to leak out. It's recommended to change the gear oil every 30,000 kilometers, and off-road enthusiasts should shorten the maintenance interval even further.