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 - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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