Some grand trucks have a two central plates sandwiching the ends of the legs, like this: http://www.pljansen.com/serv04.htm You need to loosen the bolts in that plate in order to align the legs properly. Be careful not to put the whole weight of the piano on the truck leg before tightening the bolts for that leg; something might break, and also you might not be able to fully tighten the bolt with the weight on the leg (like bolting on a spare tire). You can tighten one leg at a time as you align it. Also in this type of truck, a bolt goes through the square that holds the leg. Tighten the nut underneath it after aligning it, and before you lower the weight down (you need access to the bolt head under the leg). Does the angle of the leg to the central plate matter? After moving one piano a few times, I notice that the truck legs are no longer perpendicular to the flat side of the plate where its bolt is... I noticed recently a few trucks that had grease fittings on the rotating plate that the casters attach to. Does anyone have any suggestions for how often that should be lubed, or how to tell when it's needed? Do the wheels need lubrication? --Cy Shuster-- Bluefield, WV
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