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Old 03-13-2012, 10:46 PM   #1
Boomer
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I bought a brand new 2012 335SS last October. It has the delivery mileage plus about 600 miles of travel on it currently. I am currently preparing it for a trip to Orlando and having read in various places on the forum of axles falling off I decided to re-torque my shackle and U-bolts on the suspension.
Results: I re-torqued to Libert's specifications - the high end of the recommended range.

Results:
a) 6 of 16 shackle bolts needed tightening to reach the high end ( 50 Ft-lbs I believe) of the range.
b) 15 of 16 U-bolt nuts required tightening to reach the 70 Ft-lb high end of the range. Some of the U-Bolts required 1 to 1.5 full turns to be properly torqued.

Note: I re-torqued the wheel lug nuts last year and had a similar experience of under torqued nuts. 500 miles after my wheel nut re-torque the wheel lug nuts are still 100% to specification.

Bottom line: I doubt that a prpoer torque tightening procedure is performed at the factory.

Lesson: DO your own re-torqueing!!!








Edited by: Boomer
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Old 03-13-2012, 11:31 PM   #2
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I too just got 2012 Cruiser and have started torquing last Monday on the wheels but never thought about the shackles & u bolts ! Wow I'm sure glad you posted this as I'm getting all set for the TX . rally next month and would not like that kind of trouble . Are all the CR suspensions the same and how did you find the spec's. to use because my owners book only shows the wheel torque lbs?
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Old 03-13-2012, 11:46 PM   #3
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In my package there was a Libert " manual ( more of a flyer) which provided the wheel nut torques and the axle torque specs as well. If you don't have that go online to http://www.lci1.com/index.php?option...&Itemid=66 - this is the general page for all Libert manuals ( slides axles etc). www.lci1.com will get you there as well.

My axles for the 2012 335SS are addressed in the last section of this doc:

http://www.lci1.com/images/Flyers/Ow...le-web-10k.pdf.

The " flyer" I got with the trailer is the wheel and axle section of this manual.
Edited by: Boomer
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Old 03-14-2012, 04:37 AM   #4
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I believe a constant vigilance for tightening bolts and screws on an RV is crucial.



We shouldn’t have to do the suspension bolts etc�.especially right after factory delivery�.but obviously we do.



Mine were a bit loose back in 2005/06�.been tightening ever since.
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Old 03-14-2012, 06:04 AM   #5
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I guess they can come loose and maybe QA at Lippert and CR would have found them but I do check all the bolts on the trailer and hitch every year before the first trip. Most of them are fine but sometimes get a little movement.



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Old 03-14-2012, 11:36 AM   #6
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This topic was discussed in the older forum, but it is great news to bring up to all of the new members and to keep fresh. I also learned from this topic when it was posted a few years back and took it one step further and purchased some grade 8 nuts to "double nut" the axles as you will. So far after 3+ years...all is still good, but I will be rechecking this weekend on the de-winter checklist....



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Old 03-14-2012, 01:13 PM   #7
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I had an issue of loose U bolts nuts, that resulted in a separated axle. They haven't been loose since I tightened them to 68lbs after the 2 axle was replaced. I will check them again once I pull the trailer out of storage in another month or two.















































































































































































































































































































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Old 03-15-2012, 01:51 AM   #8
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I agree with all of the above But (Puleeze )be sure your Torque wrench is calibrated well.. Having used a torque wrench many years of my employment life it was amazing as to the difference in values from one wrench to another. Some were very much out in left field.

I always tried to own a brand that I could send in at least annually for calibration.

As I am sure some serious wrench tirners can tell youthat in many cases you can just feel where you should be with a certain size wrench,then check for torque value and you will be surprised as to how practice makes perfect...JMHO jb
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Old 03-16-2012, 08:11 AM   #9
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John,
I pick my 2012 28RKX up in a couple of weeks...I was feeling pretty good about purchasing a torgue wrench and check how tight everything was until you put in your comment about having to check the calibration...gosh, another thing to do. Can you recommend a good torgue wrench that will suffice for all my needs or do I just go with Craftsman. And then, where and how do I get them "calibrated" Sorry, I'm new to all of this but as I've been told "the only stupid question is the one you don't ask!" And I firmly believe that.

Thanks,
Jim
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Old 03-16-2012, 08:54 AM   #10
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Most any trade brand will have the service available Ala Snap On or Mac or Stanley ETC but they are pricy . I imagine a question to the sears craftsman franchisee will get you the answer from them. Even good ones are a 1 to2 lbs plus or minus so imagine what a out of calibration one could cause. I have seen it that way more than once. I get nervous when I don't hear the click when I think I should. JMHO jb. Remember if you get a click stop to always when done to unload the spring by turning it back to zero!!
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