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Old 03-19-2018, 06:28 AM   #1
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Mor-ryde jerking on take off

Just returned from picking up my father in laws new cedar Creek 36ck and we were noticing more of jerk when taking off as well as a groaning noise from the pin box when turning. The dealer installed a mor-ryde 18k pin box and we put in a brand new Curt A20 in the truck. Curious as to what may be going on here. I have the same hitch but my trailer does not have a mor-ryde and I don't have either of these sounds. Maybe a slight jerk on take off but nothing like that.
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Old 03-19-2018, 01:36 PM   #2
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Try calling MorRyde. They have great customer service. Maybe they can offer an idea.
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Old 03-19-2018, 01:41 PM   #3
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The Mor-Ryde does move front go back. That might be what you were hearing.
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Old 03-19-2018, 04:47 PM   #4
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Get a lube plate and put between the pin and receiver plate.
Should eliminate your issue. MorRyde is made to move back and forth. You should not really detect this from the cab.
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Old 03-19-2018, 04:51 PM   #5
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Anticipate the jerk (no, not you) and ease into and off the throttle. My 5ver w/MorRyde did the same. Also check pin latch on hitch for play. Anticipation is the key.
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Old 03-19-2018, 05:35 PM   #6
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The MorRyde plate shouldn't be banging. I would check the hitch itself to see how much slop there is. Hook up and chock the RV wheels. Put the truck in Drive and have someone watch the connection. Do the same in Reverse. Also, lower the landing legs of the RV and rise it until you just start lifting the truck. All weight off the truck suspension. See how much clearance you get between the hitch plate and the MorRyde plate. Put a Lube plate of the correct size in.
Also, is you Curt hitch using the Puck system or is it on rails? If rails, there is usually slop in the pins to legs of the hitch. I have seen the puck system have a little bit of movement but not like with rails.
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Old 03-19-2018, 08:52 PM   #7
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Thanks for the info. He didn't use the lube plate but will definitely the next time out. I did notice that when I drove there was no "jerking" and I mentioned that you should ease into the throttle. However my father in law feels that shouldn't matter.
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Old 03-19-2018, 11:50 PM   #8
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Could be to light of springs. There should be dust marks where the bushings glide back and forth on the lower plate. You can take a pic and text/email it to MORyde and they'll tell you if it's right or not.
I did on my MR when I had concerns similar to yours.
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Old 03-20-2018, 09:26 PM   #9
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The MR pin box is a very simple setup--I have had one for the past 11 years with no banging/jerking. The shock absorber itself is a rubber 'spring' that allows the upper and lower portions to move somewhat to absorb shocks. On a new trailer, would not expect a problem, but check with MR. And yes, be sure to use a teflon disc between the hitch surfaces.
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Old 03-20-2018, 10:29 PM   #10
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Quote:
Originally Posted by rollondown View Post
The MorRyde plate shouldn't be banging. I would check the hitch itself to see how much slop there is. Hook up and chock the RV wheels. Put the truck in Drive and have someone watch the connection. Do the same in Reverse. Also, lower the landing legs of the RV and rise it until you just start lifting the truck. All weight off the truck suspension. See how much clearance you get between the hitch plate and the MorRyde plate. Put a Lube plate of the correct size in.
Also, is you Curt hitch using the Puck system or is it on rails? If rails, there is usually slop in the pins to legs of the hitch. I have seen the puck system have a little bit of movement but not like with rails.
Good advice, We found that the dealer didn't do the most painstaking job of adjusting the cams on our hitch puck cams. Also after a few thousand miles of towing I tweaked them a second time. Nothing major but left loose / mis-aligned they could pop during some maneuvers. Our hitch came with a wrench to adjust the 4 cams. 30 min. and some patience (little white grease) you can get them just right. It's prudent to go over (Re-Torque) all that stuff every few thousand miles.

Quote:
Originally Posted by wingnut60 View Post
The MR pin box is a very simple setup--I have had one for the past 11 years with no banging/jerking. The shock absorber itself is a rubber 'spring' that allows the upper and lower portions to move somewhat to absorb shocks. On a new trailer, would not expect a problem, but check with MR. And yes, be sure to use a teflon disc between the hitch surfaces.
Agreed, the pinbox has been generally smooth quiet. BTW: Get the 12" disc(s)
Be well.
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