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<p>[QUOTE=&quot;Six9GS, post: 11414088, member: 102286&quot;]I pull trailers with air suspension and pneumatic tandem pins. After I hook up air lines and pigtail, I go to truck turn on the lights and flashers and release the trailer brakes (push knob in). This allows air to charge into the tandem pins air tank while I inspect tires, lights, etc. After that, get back in the truck and listen to see if trailer is still sucking air. Once the air in the trailer seems to stabilize I can set the trailer brakes (pull the knob out) and tandems pins will suck in when I push (or pull) the little button. If the tandems pins&#039; air tank doesn&#039;t have enough air, which is usual when first hooking up to it, the tandems pins won&#039;t suck in.</p><p>Also, once I&#039;ve moved the tandems where I want them, when you release the trailer brakes, it automatically pushes the tandem pins out. So, I don&#039;t have to go back again just for that step. After about 20 seconds,&nbsp; I set the trailer brakes again, nudge forward or back until tandem pins lock in, then go back and check they are in fact where I want them and they&#039;ve all popped out like they should.</p><p>There, thay should make it clear as mud!!!</p><p>Easy Peasy!</p><p><br /></p><p>PS. Also as mentioned,&nbsp; with a bit of practice you&#039;ll get a feel for when the 5th wheel should contact the trailer plate, what it looks, sounds and feels like. Then, you&#039;ll only have to get out if you suspect trailer plate is too high. But, until you get a really good sense of that, don&#039;t hesitate to get out and check. Much better to check when you don&#039;t have to than jump the kingpin.[/QUOTE]</p><p><br /></p>

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