I worked at a Towing Company, being the only mechanic I did small odd Jobs. One Day another Towing Company, send there freshly re-build flatbed in with a f@cked motor. The guy who owned the truck was a mechanic, aswell as the guy who drove it daily. Both agreed on it was a "airgun on, and just blow it apart"-job, that shouldent take more then 2hour job. So I blew it apart, taking half a day. So owner got pissed, cause it took to long time. Second problem; I found the big sprocket between the crank and the cam, the bolt ran loose. Breaking the complet gear assembly. I then found they turned the clutch hub (flipped), so it grinded slightly on the center. Now the sh1t hits the fan, the owner got this crazy ideer that because the clutch had these small marks on the hub, it made the motor vibrate, till the gear assembly broke! That means he would take the machine shop and the mechanic, who installed the motor, to court. That is very unusual in Denmark, the shop makes there shop insurence take care of it. But going to court is rare!!! But the clutch was'nt that bad, so in my opinion the marks on the clutch hub was so small, that it stopped making noise, before the motor got Oil pressure! And I think, the machine shop forgot to put lock-tite on the center bolt in the gear assy. And this caused the engine to fail, but everything when completly out of proportions, when they went to court!! The driver told me after two hours of driving the M@therfucker engine start to "Shake, Rattle and Roll", and what did he do? Looked ad his watch, took a deep breath and hauled as for the rest of the day. Until the bolt wore through the casting, and the drive assy went around on its own, and finaly split the house it was in. What a retard, and what a waste of a rebuild motor!!