How to repack trailer bearings3/20/2024 Looking at grease that's not on the bearings tells you almost nothing unless it's overheated and running out. What is put on the bearing at the time of packing is what you get. Keep in mind that the bearing grease does not flow like oil. Here's what I do and I taught this for 35 years. If the grease lasted on our trucks for 35K miles then changing it yearly won't prevent bearing failure if it's overloaded. If in fact they don't, packing them every year is not going to prevent an overloaded system from failing. The manufacturer should take this into consideration and put larger bearings on TT's that can carry more weight. Yes TT's may be bearing a greater load than say a truck. So why do a TT every year? Boat trailers are immersed in water every summer so they should be inspected and repacked. Our cars, trucks only needed repacking every 30-40K miles. Much truth has been stated concerning bearing packing.
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