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Old 05-22-2024, 01:53 PM   #1
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Tire monitor LOCK NUT really necessary?

Just installed a Hieha TPMS for 6 wheels on Jayco Greyhawk 30.
Whole job took less than 20 minutes, everything worked according to plan.
I really like the numbers I can read without putting on glasses.
I chose Hieha because they had excellent customer support (which I didn't need) and purchase direct from China for $100.



Last thing to do is tighten the locknuts with that silly little wrench they supply.
What a bitch that is to do. Nut and wrench are about 2mm thick, lining them up is challenging.

I need to get a spanner about 4 or 5 mm thick, that would help.

BUT are they REALLY NECESSARY? We don't put locknuts on the valve caps!

What is the consensus on omitting them?
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Old 05-22-2024, 03:00 PM   #2
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Murphy says if you don't have them, you will need them. The wrenches that came with mine, tst, are not any better.
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Old 05-22-2024, 03:55 PM   #3
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Theft protection and they could work loose due to their size, in comparison to regular caps.
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Old 05-22-2024, 03:59 PM   #4
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I didn't install mine.
I have Tyre Minder. I figure I'd take me chances.
Although, I'm an infrequent camper.
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Old 05-22-2024, 07:24 PM   #5
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I have had 8 similar sensors on my truck and trailer for the past 6 years and never used the lock nut. I just make sure they are tight on the valve stem. Never had one come loose or walk away. Plus, makes it easier to add air on occasion.
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Old 05-23-2024, 05:49 AM   #6
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I just finger tighten mine. No issues for 8 years/36k miles.
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Old 05-23-2024, 09:58 AM   #7
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Never use the lock nuts. Just check them for snugness. They are a pain to remove with locknuts on and they only slow me up when checking pressure.
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Old 05-28-2024, 09:33 PM   #8
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Iíve been using the locknuts for five years now. I believe they are for theft deterrence. A little secret though. You can definitely unscrew the TPMS sensor with the locknut installed. Just have to twist hard. I donít find them that inconvenient so I use them.
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