slspacek Posted April 4, 2013 Share Posted April 4, 2013 I am replacing the U joints on my 1966 C Model fire engine. The Short shaft between the 5 speed tranny and the pump tranny has 8 hole flanges on either end the bolt to the Tranny's. When I was removing the shaft one bolt was missing from each set of flanges and the others were not very tight. I would like to replace all bolts with new ones. Are they a special bolt or can I use a standard bolt, grade5 or grade8. I know they are 3/8 " fine thread, and I am not sure but the shoulder portion of the bolt may be a little longer to allow the flanges to not "bear" against the threaded portion to the bolt were it may be weaker. Also does any one know if there is a recommended torque value for these bolts? Thanks guys. Quote Link to comment Share on other sites More sharing options...
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