Solution for Nose of Trailer Sagging With Weight Distribution System Still Installed

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Question:

Hello eTrailer.com, I really need your help. We are new to the RV world and experienced an issue on our first trip regarding the hook up and sag at the hitch and tow vehicle. Our tow vehicle is a 2007 Suburban 1500 4WD GVWR-7400lb, 3.73 axle ratio, 7000lb tow capacity and our trailer is a 2006 KZ Coyote CT-22 Dry 3650lb, Max 6000lb. The trailer came with the Reese Heavy Duty Round Bar Adjustable Weight Distributing Hitch and Dual Cam High-Performance Sway Control #26002 500 lbs trunnion bars. Everything seemed to be okay until we loaded it up and headed out on our first road trip. Upon hooking it all up the Suburban had significant sag on the rear end. I have taken lots of pictures on measurements that can be provided upon request. The rear axle went down 3 inches, the front axle went up 1/2 inch. At the hitch connection between the Suburban and trailer fully loaded it measured at the centre of the ball at 20 inches off the ground and unloaded/no trailer attached it measured at the centre of the ball at 25 inches off the ground, an astonishing 5 inch difference. As I mentioned we are new to the RV world and the trailer seemed to drive fine, reverse fine, no sway but then I have nothing to compare it to. I have scoured the internet and called friends for help but I am getting conflicting answers. I have read on-line to 1.take it to a local RV dealer and have them look at the set up, or 2.install extra leaf springs, or 3.install Timbrens or 4.we have the wrong tow vehicle. A friend strongly recommended I contact eTrailer.com as he is always getting Great advice and ordering items from the site, so here I am. I need to know what you suggest or any advice would be helpful. We have our next adventure scheduled only 8 days from today and I want to make sure our family and everyone else on the road is safe during our travels. Thanks in advance,

asked by: Jeff

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Expert Reply:

If you have trunnion spring bars only rated for 500 lbs that is the issue. You mentioned the trailer weighing 7,400 lbs which means you are looking at a tongue weight much higher than what your trailer is rated for.

You need to replace your spring bars with the part # RP66009 which have a tongue weight range of 600-1,200 lbs.

You'd need a quantity of two of these bars. Once set up properly these will work well to reduce the sag you are experiencing.

expert reply by: Jameson C

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Answer 1

Most trailer jacks like the Lippert #LC285318 only use one wire. That wire provides the power and the assembly grounds through the mounting hardware of the jack. It's hard to tell what's going on with the electric tape and splice…

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Answer 2

I have attached a photo you can use to connect the Replacement Power Switch #EJ-3520-PSW to your 3,500 lb RAM jack. We don't have a direct wiring diagram but if you notice even though the wires are the same colors they look pretty different…

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Answer 3

There is only one wire that needs to be connected on the Lippert Electric Trailer Jack part #LC285318. This is the red 12 volt power wire that will need to be ran to the positive terminal on the battery. I cannot be sure as to how the junction box…

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Answer 4

The fuse for the Lippert powered A-frame trailer jack, #LC285318, is in its power wire, see picture. If the fuse is not blown then it is likely a ground issue. The jack grounds through the mounting hardware and if there is corrosion build up that…

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Answer 5

The replacement cam arms are sold in a pair #RP26002 or just the replacement arm #RP58435. Due to the inheritance of your setup you may have a set of gold colored cam arms instead of silver. If this is the case you would want to replace both arms…

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Answer 6

Thanks for sending us a picture of your current weight distribution setup. Because your arms and brackets are gold I can tell you have an older style of dual cam setup which means you would need to replace it with a new setup since there are no parts…

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Answer 7

There are some of the older gold arms available as replacement parts. I recommend the Replacement Cam Arm Assembly for Reese Dual Cam Classic - Gold #RP58460 for your current system if you need the replacement bracket the arm fits into. The…

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Answer 8

Yep, you can absolutely just upgrade the 800 lb trunnion bars to 1,200 lb bars on your Reese Strait-Line weight distribution hitch and not have to get any parts. All you will need are two of the following: - Replacement Trunnion Spring Bar for Reese…

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Answer 9

The Reese Steady Flex #RP66560 will be 75 lbs total and the Strait-Line Weight Distribution System w Sway Control #RP66084 will be 113 lbs. The complexity of the systems to disconnect for storage will be similar, so I would just mark the trailer for…

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Answer 10

The red power wire on the Electric A-Frame Tongue Jack, #LC285318, is the power wire and it will attach to the positive battery terminal on your trailer battery. First, remove the fuse in the in-line fuse holder on the red wire. Mount the jack to the…

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Answer 11

All A-frame trailer jacks use the same 3 inch bolt pattern that will match the pattern on the tongue of your trailer. The Lippert Components Trailer Jack, #LC285318, that you referenced will work well for your application. The jack's 3,500 lbs…

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Answer 12

I've never heard of an actual third brake light connector on a camper shell to plug in on a truck and we don't carry any parts to do that. The light generally needs to be hardwired into the truck's brake light circuit. The issue with this…

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Solution for Nose of Trailer Sagging With Weight Distribution System Still Installed

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