Most of the old trucks had lock washers on the heads of the bolts holding the bellhousing to the flywheel housing. On the old double breasted Yamaha's if they didn't have lock washers they would work loose and break the bolts off. Then you had a couple options 1 change flywheel housing or 2 drill out the old bolts and tap for new bolts if you could otherwise you had to drill out old bolts and helicoil the old holes for new bolts. Never had problems with trucks with Cummins or Cats in them doing that just those detriots. Usually the lock washers were a flat form of a washer. Sometimes split ones were used as a replacement by somebody that had lost one or it broke. I think for a lot of jobs torquing bolts is over rated. Till I was in high school I didn't know they made torque wrenches. Never had one nor used one. Did many engines without one with no failures due to proper torque on bolts.
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Today's Featured Article - Women and Tractors - More Views From the Farmer's Wife - by Teri Burkholder. The top ten reasons why the judges wouldn't let you participate in the stock antique tractor pull: Hey, this is stock! It came with that V8 in it! That "R" on my tires stands for "really old" not radial! Blue gas? We thought it was a pretty color! What wire hooked to my throttle?
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