Sevice wheelnut tightening

Shuttleworths replied on 12/01/2020 18:52

Posted on 12/01/2020 18:52

When we had our caravan serviced the technician said that the caravan club had directed service engineers to tighten all wheelnuts to 130 on the torque wrench, and that they advise that caravanners do this before very trip. Anybody else heard about this? Incidentally, he insisted I watched him set the wrench to 130 and tighten the nuts!

Tinwheeler replied on 12/01/2020 19:03

Posted on 12/01/2020 19:03

I don’t think the club can insist on anything! They might recommend but I doubt even that as it’s not within their remit. This sounds more like the NCC than CAMC.

However, for wheel nut torque the chassis manufacturer's recommendation should be used rather than a blanket figure.

JVB66 replied on 12/01/2020 19:52

Posted on 12/01/2020 19:52

When our c/van is serviced  ,on collecting it they always Insist on hitching the van to the car checking all the lights work correctly and ensure  we watch while they "torque "  the wheel nuts,then they replace our telltales which then means a quick glance at them before each journey is all that is required

I agree that it would not have been either  of the major clubs .that would insist on the torque  settings at service

Navigateur replied on 12/01/2020 20:08

Posted on 12/01/2020 20:08

130?   Twang!   

I very much doubt that every model of every make has exactly the same required torque setting.   Stripped nuts can be very painful.

Tigi replied on 12/01/2020 20:19

Posted on 12/01/2020 20:19

Different makes require different torque settings and vary more than you might think e.g. Lunar is currently 95nm and Swift 130nm for alloys. Settings can be found in your caravans manual and on my van at least on the weightplate. Spare steel wheels require different bolts (supplied) and torque setting are again different.

Simon100 replied on 12/01/2020 20:38

Posted on 12/01/2020 20:38

It is also recommended that you recheck the torque after having driven 20 miles or so after you have had the van serviced, and  then before every trip.

There are many threads about loose wheel nuts, especially on Bailey caravans, on the web. Just Google the topic.

DSB replied on 13/01/2020 08:34

Posted on 13/01/2020 08:34

Our service people have been tighening our nuts for years - everytime we collect the caravan, whether it is in for service, warranty, or anything else.  I have to stand and watch while they do it.....!!

David

Edit:  I've just read what I've written... sorry if it sounds like a quote from a Carry On film script....  smilesmile

replied on 13/01/2020 09:09

Posted on 12/01/2020 18:52 by Shuttleworths

When we had our caravan serviced the technician said that the caravan club had directed service engineers to tighten all wheelnuts to 130 on the torque wrench, and that they advise that caravanners do this before very trip. Anybody else heard about this? Incidentally, he insisted I watched him set the wrench to 130 and tighten the nuts!

Posted on 13/01/2020 09:09

I think that whoever said that they had been instructed/advise by the club is talking rubbish. You need to check for yourself what they should be. On an earlier Swift they were (I think) 130 Nm. Previous lunar (I think) 110 Nm. Current Lunar 95 Nm. 

I check torque before leaving home for each tour.

Navigateur replied on 13/01/2020 10:11

Posted on 13/01/2020 10:11

As this thread has moved to serious discussion it is worth mentioning how to CORRECTLY check the torque.

If the nut/bolt has already been tightened to the correct setting, or a higher one, the torque wrench will click-off anyway.  So what needs to be done is to first slacken off the fastening a bit so that the torque wrench is actually turning the fastening when it gives its indication.

I suspect the vast majority of these "You must watch as I check your nuts" places do not first slacken off.

replied on 13/01/2020 10:19

Posted on 13/01/2020 10:11 by Navigateur

As this thread has moved to serious discussion it is worth mentioning how to CORRECTLY check the torque.

If the nut/bolt has already been tightened to the correct setting, or a higher one, the torque wrench will click-off anyway.  So what needs to be done is to first slacken off the fastening a bit so that the torque wrench is actually turning the fastening when it gives its indication.

I suspect the vast majority of these "You must watch as I check your nuts" places do not first slacken off.

Posted on 13/01/2020 10:19

Whilst I agree that is the correct way to obtain a correct torque there is no way to actually check a torque (unless it is obviously moves when the torque wrench is applied). With recommendations to cheque torque every 20 to 30 miles after initial tightening it could extend time for a 100 mile motorway journey considerably to loosen off and retorque at such an interval. 

near Malvern Hills Club Campsite Member photo by Andrew Cole

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