Earlier I wrote: > The Continental Engine Overhaul Manual for the C87, 85, 90 & O-200 > Dated February 1980 gives the tightening torque for the 3/8-24 > Propeller Hub Bolts as 200 - 220 in-lbs or 16.7 to 18.3 ft-lbs. > > The Alon Service Manual gives tightening torque for the Prop Hub Bolts > as 300 - 360 in-lbs or 25 - 30 ft-lbs. > > Obviously, there is a conflict there. I don't know why the numbers > aren't the same.
OK, Now I think I know why the Prop Bolt torque values given in the Continental Engine Overhaul Manual are different from those given in the Alon Service Manual. FR suggested, and WRB confirmed that the torque values in the Continental Engine Overhaul Manual are for threads lubricated with oil. (It helps to read the Notes!) I don't have my Alon Service Manual handy, but I have a feeling that it doesn't say anything about lubricating the threads, so the values in the Alon manual are probably dry torque values. Thanks guys! Anyone want to offer up a reference as to whether the bolts should be torqued with the threads lubricated or dry? Or should we just be happy knowing the wet and dry torque values? Best Regards, Wayne DelRossi Alon Aircoupe N5618F "Life begins at 50...... knots." **************Looking for a car that's sporty, fun and fits in your budget? Read reviews on AOL Autos. (http://autos.aol.com/cars-Volkswagen-Jetta-2009/expert-review?ncid=aolaut00030000000007 )
