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Old 06-03-2014, 03:17 PM   #11
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Location: north central Iowa
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I am towing the same trailer with a F350 and the MorRyde pin box. After about two thousand miles of towing I have not experienced the problem you are having. Others advised me to order the MorRyde to minimize the checking.

2014 Eagle Premier 361REQS
2013 Ford F350 Crew w/ 6.7 diesel
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Old 06-13-2014, 04:52 PM   #12
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Location: Dayton
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On our first 5er we had a standard pin box and axles and we experienced 'chucking'. The trailer had a rear kitchen and after driving through Alabama (I-59) and LA on our way to Texas we had shelves in the cabinet break and everything was jostled around. Our next trailer had a Mor-Ryde pin box and what a difference. This Pinnacle has both Mor-Ryde axles and Pin box and it is the smoothest towing trailer I have owned. Hope you come up with a good solution to your issue.

Craig & Terry in Tennessee
2018 Pinnacle 36 KPTS,
2012 F350 CC LB King Ranch, 6.7L TD, Ford 25K hitch, TM TPMS, Diesel Site Coolant Filtration System

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Old 06-15-2014, 08:44 AM   #13
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Agree with all the above, but one other thing to mention. Weight on the truck should be at least 25% of the trailer weight on a 5er. We tow an 11,000 lb Designer 5er with the standard factory pin box, and weight on the F350's hitch is around 2,800 lb. In 3 years of towing this particular trailer, we have never had a chucking issue. Just rides along as if it weren't there, regardless of road conditions. Maybe you should check your pin weight and see if it is too light.
2003 Ford F-350 V-10 Crew Cab 4WD Long Bed
2004 Jayco Designer Medallion 29 RLTS 5th wheel
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Old 06-15-2014, 12:15 PM   #14
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if your towing on flat ground in high gear or OD there is harmonics generated through your drivetrain because your ECM is thinking load then fuel efficiency all and is constantly adjusting therefore causing the harmonics in tiur driveshaft. The next time it does it, drop your tranny into M-4 or 5 ( if you have that feature on your 06. ) or put it to the rug for few seconds. If the problem goes away, visit a local Cat scale and check your axle weights. Think you may find part of your problem being unbalanced load. If you had a gasser, you wouldn't experience this. Newer diesel ECM's are very smart, constntly searching for load situations and reducing fuel to give better economy. They know you have a hell of a load behind you and are ready to respond to fuel commands before you are. They search for the best position to be and get confused at low rpm, high torque situations. If you balance the load the best you can on the TV vs TT the issue will sort of subside but not go away.
I tow with a 2011 6.7, have the same issue towing an 11000 lb TT. I run that thing hard, above 1500 rpm to keep load consistent so the ECM constantly sees load. The Moride will help but puts a bandaid on core cause.
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Old 06-19-2014, 01:41 AM   #15
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I am hauling a 2007 385BHS with a lifted 05 F350 with air bags in the rear, standard pin box, but like tinlizzie23 stated I have 2450lbs over my rear axle of my truck. I haul my 5er in OD and the only time I had any issue with jolting was when my brakes were engaging every time I turn on my blinker(water got in the connection). I would try lowering your hitch in the bed of the truck to add more weight over the rear axle. I hauled my about 3,000 miles on Michigan roads going back and forth from Metro Detroit area to the Upper Peninsula multiple times. if anyone lives in Michigan you know how crappy our roads are..

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