re-torque of trailer wheels/what's the ft.lbs. - Page 4 - Escape Trailer Owners Community

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Old 04-03-2015, 04:27 PM   #31
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Quote:
Originally Posted by TAfraser View Post
At our lab we certified torque wrenches to +/- 5% of value, from 20% to 100% of the wrenches range. In order to maintain that tight tolerance we re-calibrated each wrench every 60 days in a very controlled environment where external factors, including humans, were removed. When the wrench was used in the field, every external contributing factor that could affect torque was to be applied to the calculated tolerance of that wrench for that torque. Since I only calibrated the wrenches, I canít report on their use, like what calculations were used for extensions, lubricants, area cleanliness, etc. All I can tell you is without an initial calibration you donít know how accurate your wrench is, and without regular re-calibrations you donít know how accurate your wrench remains over time.

Luckily, as Charlie Y states, torque consistency of each lug nut is more important than accuracy when it comes to wheels. And that is good because if we use the example provided to us by Charlie Y and his link, (un-lubricated torque +/-35%, or 31.5ft/lbs at 90 & lubricated torque +/-25%, or 22.5 ft/lbs at 90) itís just luck if weíre within the 90-95 ft/lbs recommended by ETI. Thatís what I meant earlier about torque being very inaccurate.

Following the torque sequence shown by Rossue in an earlier post and using the three step process given to us again by Rossue for attaining the required torque (your trailer and tow vehicle) is very important in attaining the required consistency. If youíve ever had a lug nut work itís way loose, or worse yet, lost a tire, you may have had inconsistent torque applied to your lug nuts.

Personally, I donít use lubricants on the threads of wheel bolts because they tend to collect contaminants. And contaminants can have more adverse effect on torque accuracy and consistency then dry threads. But I believe some lubricants are suggested to control electrolysis due to dissimilar metals. If thatís the case, the lubricant should be cleaned off and reapplied every time the lug nut is removed and reinstalled, thereby reducing the contamination.
Sorry for the science project, Iíll be quiet now
Tom
I'm I getting this correct to first loosen all the lug nuts then re tighten using the 3 step . Won't the constant loosening and tightening do something to metal ? Or is this the proper way to do it . I just have been going around checking with torque wrench before trip .
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Old 04-03-2015, 04:59 PM   #32
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Just concern yourself with checking the lug nut torque. The three step torquing sequence is used when the wheels have been removed. It has been my experince that the lugnuts securing alloy wheels should be checked more frequently.
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Old 04-03-2015, 05:54 PM   #33
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Originally Posted by Jubal View Post
Just concern yourself with checking the lug nut torque. The three step torquing sequence is used when the wheels have been removed. It has been my experince that the lugnuts securing alloy wheels should be checked more frequently.
Thanks Bob . That is what I will keep doing . Pat
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Old 04-03-2015, 06:38 PM   #34
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Alloy wheels should defiantly be checked more often but all wheel types should be check periodically. After removing the wheels I find they will be loose every time I check them for a few hundred miles. When I remove wheels I check them at 25, 75, and 200 miles. Then usually before each trip after that.

I have had 2 friends lose wheels on campers and one hit a car. Get some kind of torque wrench and check your wheels!
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Old 04-03-2015, 07:42 PM   #35
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Originally Posted by Kountrykamper View Post
Alloy wheels should defiantly be checked more often but all wheel types should be check periodically. After removing the wheels I find they will be loose every time I check them for a few hundred miles. When I remove wheels I check them at 25, 75, and 200 miles. Then usually before each trip after that.

I have had 2 friends lose wheels on campers and one hit a car. Get some kind of torque wrench and check your wheels!
Excellent summary.
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Old 04-03-2015, 08:11 PM   #36
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OK, ok. I give.

What size is the lug nut again?
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Old 04-03-2015, 08:17 PM   #37
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13/16
same as your Toyota
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Old 04-03-2015, 08:26 PM   #38
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Also over tighting can bend wheels, stretch wheels studs and weaken them or break them off. Using a torque wrench is the only way to know how much you are tighting them and to get them all the same torque.

Most trailer wheels are 13/16
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Old 04-03-2015, 09:18 PM   #39
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spellcheck, over tighting not over nighting....
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Old 04-03-2015, 09:25 PM   #40
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iPad is getting smaller and smaller these days.
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