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I have here some information how to repair an ceiling fan, i know this is only a small information in repairing a ceiling fan,
1. All the blades need to be on the same plane. If one is out of plane this will need to be corrected. The way to detect this is by measuring the distance of the blades from the ceiling. Hold a yard stick with one end on the ceiling. Measure the blades as you manually push the fan blades around. Please don’t turn it on! If one of the blades turns out to be a different distance, then it is not in the same plane as the other blades.
FIX - You will have to bend the out-of-plane blade to the correct distance from the ceiling. You will need another set of hands to remedy this! Be careful when you are bending the blades of the fan. The blade arms can break and you may have to buy a new set of blade arms.
2. Do all the blades have the same pitch? Measure the distance from the ceiling to the front of each blade. If there is a variance you will want to correct it.
FIX - Twist the out of pitch blade or blades to match the others.
3. The blades are not separated by the same angles. Measure between the blade tips. Are the distances equal?
FIX - Push the problem blade into the correct position. Again, this may require a few extra hands!
4. One of the blades may be out of weight. To detect this you would have to remove the blades and weigh them. You may just want to try to balance them and forget about weighing them.
I get this in some site that i research in google engine hope it would help this little information...
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