studioman3 Posted April 21, 2010 Share Posted April 21, 2010 A little off topic, I ran across a couple old Macks the other day. any idea what this is on the fifth wheel? Just curious Tim Quote Link to comment Share on other sites More sharing options...
rronning84 Posted April 21, 2010 Share Posted April 21, 2010 Looks like a very adjustable hight 5th wheel to me. Not sure what it is needed for though. Quote Link to comment Share on other sites More sharing options...
f/liner Posted April 21, 2010 Share Posted April 21, 2010 i have seen this it was dumping a grain trailer Quote Link to comment Share on other sites More sharing options...
highway Posted April 21, 2010 Share Posted April 21, 2010 I would say an adjustable fifth wheel, too. Even though I've never see anything like it , I have seen similar fifth wheel plates on "yard jockies" or "yard dogs", it is an air actuated fifth wheel that will release the trailer at a push of a button. Quote Link to comment Share on other sites More sharing options...
rronning84 Posted April 21, 2010 Share Posted April 21, 2010 After looking at it more I agree that it is probably used for dumping trailers as it looks like it will lift rather high. Quote Link to comment Share on other sites More sharing options...
cargostar Posted April 21, 2010 Share Posted April 21, 2010 House moving maybe? Hooking up and disconnecting to get the house off of the cribbing? Quote Link to comment Share on other sites More sharing options...
mackinac359 Posted April 21, 2010 Share Posted April 21, 2010 I've seen these before - it raises the 5th wheel. Tim Quote Link to comment Share on other sites More sharing options...
highway Posted April 21, 2010 Share Posted April 21, 2010 I've seen these before - it raises the 5th wheel. Tim What, like a yard dog? Quote Link to comment Share on other sites More sharing options...
Jim B Posted April 21, 2010 Share Posted April 21, 2010 Ok, now that we know what it is, who's going to build one? Quote Link to comment Share on other sites More sharing options...
studioman3 Posted April 21, 2010 Author Share Posted April 21, 2010 Ok, now that we know what it is, who's going to build one? lol I'll prolly have to get more pics of it then. The black and red Mack was for sale by the way, $3000 OBO, would be fun to restore. Tim Quote Link to comment Share on other sites More sharing options...
Scott S Posted April 25, 2010 Share Posted April 25, 2010 That is a hi lift unit for dumping trailers that are not dump trailers, ie Box type vans, usualy loaded w chips, bark ect. they were popular before the dump platforms came into use. still see smaller yard useing them here in the east. Scott Quote Link to comment Share on other sites More sharing options...
lvfd221 Posted May 8, 2010 Share Posted May 8, 2010 HI guys, If you find the book. Semi-trucks of the 1950s by Ron Adems it shows a picture if the lift in action. Page #9 top photo. Hope that this helps. I may have to try to build one of these my self. Rex Quote Link to comment Share on other sites More sharing options...
daniel gailloux Posted May 9, 2010 Share Posted May 9, 2010 Hello Rex Here is a Pacific truck with the fith wheel set up as the picture you have taken. It is from Hanks truck picture my reference for trucks. My link My link If you look in Hanks truck picture you should be able to find a picture with a raised trailer. Hope this helps. Best regards Daniel Gailloux Quote Link to comment Share on other sites More sharing options...
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