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Old 06-19-2016, 12:44 PM   #1
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looking for advice on changing out pin box

Looking for advice on the easiest way to change out a pin box
I pick up a used morryde and looking to change it out i was thinking about using another truck i have so the hight is not as high and the get a couple of drift pins when putting the new one in?
thanks
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Old 06-19-2016, 01:13 PM   #2
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I just used a helper to pick it up. Once we had it up and in place my daughter stuck in a couple bolts to hold it. The rest was easy to do by myself.
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Old 06-19-2016, 08:54 PM   #3
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This article is about a different pin box but gives an excellent explanation of installation.
Lippert Air Ride Pin Box Review and Demo
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Old 06-19-2016, 09:15 PM   #4
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When our oem pinbox was changed out for the Lippert Goose Box the instructions were very explicet about NOT re-useing any of the attachment bolts.Re-useing them causes them to stretch more than they are designed for and weakens them significantly.They are one time use fasteners.
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Old 06-19-2016, 09:34 PM   #5
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Very simple one person job once you have the new one on the bed of your truck. Back under the trailer. Adjust the height with your trailer legs. Set the pin box on a couple blocks of wood. Slide it around into place raise or lower the trailer as needed to line up the holes. Put in the bolts and tighten into place. No lifting required once you get it into the truck box. 1/2 hour job.
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Old 06-19-2016, 10:34 PM   #6
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Quote:
Originally Posted by trbomax View Post
When our oem pinbox was changed out for the Lippert Goose Box the instructions were very explicet about NOT re-useing any of the attachment bolts.Re-useing them causes them to stretch more than they are designed for and weakens them significantly.They are one time use fasteners.
good point, i upgraded to grade 8 bolts, just for piece of mind.
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Old 06-20-2016, 11:10 AM   #7
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So does anybody know the torque spec on the pin box bolts?

thank you all
for your responses
Muddy
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Old 06-20-2016, 01:56 PM   #8
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OK just found this article

and this from it

Installing the Flex Air Pin Box on our Fifth Wheel Trailer


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. 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. 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.”
I reused the OEM 5/8th bolts, nuts, washers as they were all in excellent shape and tightened them up to 160 lbs. 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.

thanks to all
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Old 06-20-2016, 02:25 PM   #9
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Quote:
Originally Posted by muddyrode View Post
So does anybody know the torque spec on the pin box bolts?

thank you all
for your responses
Muddy
Check with the mfg. also make sure your replacement pin box is the correct replacement for your existing one.
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