![]() *UPDATE* – I decide to replace the original Grade 5 bolts with Grade 8 bolts. I did have to move the new pin box up one alignment hole to have the king pin at the same height as my old one. I reused the OEM 5/8 th bolts, nuts, washers as they were all in excellent shape and tightened them up to 160 lbs. If no torque requirements exist, torque 1/2” bolts a minimum of 110 ft/lb and torque 5/8” bolts a minimum of 160 ft/lb and torque 3/4” bolts a minimum of 210 ft/lb.” Make sure replacement fasteners are the same grade and diameter as those removed for torque specifications on pin box bolts refer to manufacture’s specifications. #PINBOX DEMINSIONS INSTALL#Lippert’s pin box install manual states “ We recommend using the nuts, bolts and washers that came on the coach unless they are in bad condition. Once the Flex Air Pin Box was installed and the bolts snugged up the next step was to tighten them to the proper torque specification. Another thought I had was to use my trucks tailgate to support the weight during install and using the trailer landing jacks to get it in place. I was lucking enough to have a hydraulic lift table handy when doing the job. Quite a bit of weight to be trying to hold in place while threading in and tightening the bolts. The Flex Air weighs in at a robust 225 lbs. The biggest challenge in swapping out the old pin box with the new Flex Air is the weight involved. The new pin box will be installed as close as possible to the same height so proper truck bed rail clearance and trailer level are maintained. Prior to removing the pin box, I took a measurement from the bottom of the king pin to the ground. Four nuts and bolts on each side hold the pin box in place. I needed a 15/16 th socket, torque wrench, and a large 15/16 th wrench. Removing the old OEM pin box was dead simple with the right tools. With a built-in adjustable airbag, oil filled shock, pivoting head and thick rubber buffer it looks like just the ticket to smoothing out our journeys. Therefore, I was super excited when Lippert Components contacted me offering to send out a new Flex Air Pin Box for a good old Love Your RV! Review. On my upgrades wish list for some time now has been a replacement pin box with built in shock absorption. I often wonder if damage to the fifth wheels frame might take place! Our 1 ton Ford F350 dually has pretty stiff rear springs so the sometimes intense vibrations can get very uncomfortable. We also love to boondock routinely dragging our rig down lumpy or wash-boarded dirt and gravel roads in search of those most scenic of camp spots. Large cracks in the cement roadways and bridges can cause harsh jolts and uncomfortable chucking ( a back and forth jerking or tugging motion). To safely keep up with the flow of traffic slowing down for a rough section is sometimes not an option. I find it particularly annoying when we travel through larger cities where the highways have been badly worn down by traffic. This works well on smooth highways, but things can get a bit jarring when the roads get rough. DURABILITY - With a 21,000 lb.Our Keystone Cougar 276RLS trailer came with a basic solid steel pin box.Plus, you can use the Gooseneck Connect to tow other gooseneck systems like horse and animal trailers TIME-SAVING - By hauling with a single system, you won’t waste time installing or dismantling your bulky fifth wheel hitch every time you want change the trailer you’re hauling.The Gooseneck Connect is the only pin box on the market that won’t compromise the warranty on your Lippert™ Space-Saver Upper Deck Chassis MORE SPACE - With the Gooseneck Connect™, you can tow your RV without a bulky fifth wheel hitch system taking up all the valuable space in the back of your truck.Plus, it’s the only gooseneck pin box on the market that won’t compromise your Lippert chassis warranty. No more switching out pin boxes and hitches every time you need to haul a trailer with a different connection system. One System Is All You Need.īuilt specifically for the new Lippert™ Space-Saver Upper Deck Chassis, the Gooseneck Connect Pin Box gives owners the towing versatility to haul their RV or horse or animal trailer with a single system. Best of all, it saves you from taking your bulky fifth wheel hitch in and out of your tow vehicle’s bed when your towing needs change. Defined by a low-profile mounting system, this pin box won’t sacrifice crucial truck bed space when combined with a gooseneck hitch. Replace your standard fifth wheel pin box with the Gooseneck Connect™ from Lippert™. ![]()
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