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<p>[QUOTE=&quot;Victor_V, post: 4460660, member: 23696&quot;]I liked doubles, despite the hassle of breaking down and hooking sets. The advice given here is good, like not worrying about the back box, which will follow the front box if you don&#039;t stress on it and just drive the truck, not look back and worry about it. If you&#039;ve got your tractor and front box where they should be in your lane the back box will straighten right out on its own. </p><p><br /></p><p>No need to try &#039;adjust&#039; for the back box or you&#039;ll make matters much, much worse. Let the back box do its thing. Follow. It &#039;knows&#039; how.</p><p><br /></p><p>At my stop, I would always try get the back box as far into a hole as possible if there were 2 available, then drop the back box there and pull off with the front box and park the con gear where I could get to it easily, spot the front box and go back and finish spotting the back box. Most likely, you won&#039;t have two doors and don&#039;t try to back the back box while you&#039;re new to sets anyway. </p><p><br /></p><p>But when you have time and some experience it feels good and like an accomplishment to get even a little backing progress on a set of doubles. </p><p><br /></p><p>Moving the con gear around with your tractor&#039;s a lot easier backing than pushing because the short con gear turns really fast, the tractor turns slow. It follows like a trailer better than it drives like pushing a shopping cart. All our trucks had pintles on the front bumper for just that reason. When you&#039;re ready to hook up, make sure your back box is parked where you have ample room to hook the entire set, tractor and all, before you try hook up. That way you&#039;re not in the way more than necessary.</p><p><br /></p><p>Turns are a breeze compared to a 53&#039; box behind you.</p><p><br /></p><p>If I recall (it&#039;s been over 30 years), we tested our air lines at the back of the front box before and the con gear after connecting the con gear lines so you know there&#039;s no obstruction, like ice and you&#039;ve confirmed air flow. That&#039;s an especially good idea if it&#039;s a con gear you haven&#039;t used before. Just like approaching a &#039;new-to-you&#039; trailer with caution and scrutiny.</p><p><br /></p><p>Helpful if you have a Johnson bar in the cab that stays in open position, doesn&#039;t just spring back. No need to set it wide open, just enough to blow some air through.</p><p><br /></p><p>Once you&#039;ve got the set all hooked, crack your valves at the back of the back box to confirm air flow and that you&#039;ve got them off before you start out. Don&#039;t want to be losing air back there when you&#039;re starting off...[/QUOTE]</p><p><br /></p>

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