Guest Macks and Brockways Posted July 13, 2006 Share Posted July 13, 2006 In the 70's I lived and breathed Mack literature as a young kid..but as I get older I am getting rusty..LOL. IT seems that 34/38 axles were a flat flange, 44 axles had a cone that came to a point with an edge and 50 thru 80 had cones with a rounded edge..for years thats how I ID'd them..maybe I was wrong all these years. My 89 superliner has obviously 50k or higher camelbacks but the axle flange has no cone..what am I missing? a little history would sure help me thanks!Also I will further display my ignorance....at the trunnion ...some you see a cap with a grease fitting ..others you just see a bolt with a round tube..whats up there? I used to think the capped ones had a bearing and the others had bushings( rubber or bronze)..educate me please.I just saw a granite that looked like 44k spring but had a cap at the trunnion, my r700 has 44 k but no cap..Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/1310-mack-axle-historyhelp-needed/ Share on other sites More sharing options...
brenner Posted July 15, 2006 Share Posted July 15, 2006 The trunnions with caps on them are bronze bushings, the others are rubber or urethane bushings. Quote Link to comment https://www.bigmacktrucks.com/topic/1310-mack-axle-historyhelp-needed/#findComment-6589 Share on other sites More sharing options...
CML Service Posted July 15, 2006 Share Posted July 15, 2006 Axles have had several changes. Sometime mid to late 80's full floating axles went away on 44's in favor of flat flange type. Shortly after that iron housings dissappeared in favor of welded steel.Chuck Quote Link to comment https://www.bigmacktrucks.com/topic/1310-mack-axle-historyhelp-needed/#findComment-6591 Share on other sites More sharing options...
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