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bonner
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Can not even 3 yr old and new bearings required can’t wait to get rid of this Bailey,fault after fault after fault.Will never buy another one 

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Anything you replace it with, in this field, will feature wheel bearings, and sadly during a brake service a careless operative can speedily reduce these  bearings life.

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It's an Alko chassis,  most other caravans will have the same type of bearings.

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Has your van been stationary for an extended period of time at some point?? Do you only use it a couple of times a year?

 

Motorhomes often suffer from wheel bearing trouble, sometimes called “lazy van syndrome” . They get left in one position for a long time. A tiny spot on the wheel bearing surface develops a spot of rust due to the grease not having fully coated it, or run off due to heat etc.  The M.H. Is then driven and that little patch of rust acts like grinding compound and wears away the rest of the surface hardening, net result? A ruined bearing assembly. 

 

Another possible reason is a “service engineer” failing to re-grease any bearing removed during a service, or dropping it in a patch of grit where the grease picks a bit up and that bit of grits grinds away at the machined surface, or he fails to tighten the bearing to the correct torque after checking the brakes. 

 

TWO defective wheel bearings smacks very strongly of the service engineer scenario to my mind. Many thousands of caravans never have an issue with theirs, yet yours needs two after just three years?? Summat ain’t right there mister! 

 

Andy

 

P.S. As has been pointed out, The axle is a “bought in” item from Alko so hardly Bailey’s fault. 

Experience is something you acquire after you have an urgent need for it.

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Our Baileys have all done plenty of miles. Our previous Vigo was 4 years old and  did  2 continental trips plus UK runs every year. It never had any issues with bearings. Vans all serviced annually at Cosford Caravans.

 

I had an Abbey GTS for 9 years which I serviced myself after first year. It had the tapered roller bearings which were cleaned and regreased annually when brake drums removed for cleaning and checking. No need for one shot nuts, just new split pins!

I would tend to agree with Mr Plodd.

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The bearings in question here will be sealed for life units, trapped throughout a brake service within the hub. They will not be removed nor could be re-greased, or could be exposed to dirt contamination.

 

Edit: why oh why did they change our hubs from the far better engineered taper roller bearings?

Edited by JTQ
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1 minute ago, JTQ said:

The bearings in question here will be sealed for life units, trapped throughout a brake service within the hub. They will not be removed nor could be re-greased, or could be exposed to dirt contamination.

 

Do you know that for a fact? Or are you surmising??

 

If that’s the case then “lazy van syndrome” seems favourite.

 

Andy

Edited by Mr Plodd

Experience is something you acquire after you have an urgent need for it.

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16 minutes ago, Mr Plodd said:

 

Do you know that for a fact? Or are you surmising??

 

If that’s the case then “lazy van syndrome” seems favourite.

 

Andy

 

Yes, unless we speculate that AL-KO made him a one off special chassis!

In our size of caravan, Al-KO went to a sealed bearing over 20 years ago, but why oh why?

 

Both wheel bearings failing speaks to my mind volumes about the practices of at least one of the service operatives who touched this van.

 

 

Edited by JTQ
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Fairy snuff :)

 

Andy

Experience is something you acquire after you have an urgent need for it.

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I looked up the Al ko chassis manual online, it does confirm that the bearings are sealed for life but interestingly not protected against water ingress! I would have thought there was a grease seal! 

Perhaps they mean immersion in deep water for any period of time?

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8 minutes ago, 664DaveS said:

I looked up the Al ko chassis manual online, it does confirm that the bearings are sealed for life but interestingly not protected against water ingress! I would have thought there was a grease seal! 

Perhaps they mean immersion in deep water for any period of time?

 

Unless you use the caravan in deep flooded water, there is really no way water is going to get past the grease seal.  Spinning along a rain drenched road the centrifugal forces on damp building up on the hub's inner face will throw it away from the bearing, automatically keeping the bearing dry.

 

IMO the point they are making is these hubs are not suitable for the likes of boat launching trailers, though I have seen that being done.

Edited by JTQ
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On 09/05/2019 at 18:38, bspks said:

It's an Alko chassis,  most other caravans will have the same type of bearings.

 

I very much doubt that Alko make ball bearings, they will source them from a specialist manufacturer.  Moreover the manufacturer they source from will probably change from time to time, depending on what deals they strike for large batches. It is quite possible therefore that the quality of the bearings will vary with the year of manufacture of the chassis.

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On 09/05/2019 at 17:50, bonner said:

Can not even 3 yr old and new bearings required can’t wait to get rid of this Bailey,fault after fault after fault.Will never buy another one 

 

Who said it was the bearings please?

 

geoff

Kia Sorento KX-1 CRDI 4WD towing an Elddis Affinity 530

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2 minutes ago, shipbroker said:

Who said it was the bearings please?

geoff

OP in the very first post.  Mind, he's not been back on the forum since doing so.

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40 minutes ago, Rodders53 said:

OP in the very first post.  Mind, he's not been back on the forum since doing so.

 

True...but who told him was what I was trying to get at!

 

geoff

Kia Sorento KX-1 CRDI 4WD towing an Elddis Affinity 530

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On 09/05/2019 at 19:42, JTQ said:

Edit: why oh why did they change our hubs from the far better engineered taper roller bearings?

1

 

I remember keeping my old Avondale Quantock long after we fancied a change of van simply because I wanted to delay having to have sealed-for-life bearings.   But eventually I did change and they've been no problem.     My current Avondale runs on them and after 20 years they are still OK.   And why shouldn't they be?   Cars have had sealed bearings for just as many years.   Just my opinion - I think that some fitters adjust them up too close to the drums so that they begin to run hot and so the grease melts.  

Citroen C5-X7 Tourer+Avondale Rialto 480/2
https://jondogoescaravanning.com

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4 hours ago, Jaydug said:

 

I remember keeping my old Avondale Quantock long after we fancied a change of van simply because I wanted to delay having to have sealed-for-life bearings.   But eventually I did change and they've been no problem.     My current Avondale runs on them and after 20 years they are still OK.   And why shouldn't they be?   Cars have had sealed bearings for just as many years.   Just my opinion - I think that some fitters adjust them up too close to the drums so that they begin to run hot and so the grease melts.  

 

In concept there is nothing wrong with sealed for life bearings, however with it comes a big negative. To removed the hub if ever routinely required in the basic hub design, means the bearing must be drawn off one interface, typically the shaft, the hub can't be removed otherwise.
Here, unlike in many cars  the hub/brake assembly design requires, the hub to be routinely removed, a massive application difference in the typical car vs the current caravan.
That need to remove the bearing itself from the shaft means the shaft bearing fit must have a clearance, so the critical inner trackway can't be supported as effectively as it might be if designed with a light interference fit, all the rolling element support has to come from the substance of the inner shell.
If all that was not bad enough, here, and again like in domestic cars the rolling elements used are “balls” not rollers. An immediate ramification of that is the load bearing contacts are points of contact not lines of contact.  Plus, in the case of the inner trackway, as the ball is rolling on a smaller diameter and the outside of the inner trackway, an even smaller loaded area and as said earlier, that's here the poorly supported component.
In a light load carrying duty like a domestic car that works tolerably well, but move to a SA caravan  using a  bearing of largely similar scantlings carrying about twice the static load, and with twice the mass carried, on a cruder suspension the dynamic loads are going to be at least double, real challenges there.
I have been retired twenty years, but I suspect those charged these days with heavier vehicle wheel bearing design choices still favour rollers over balls; anyone here up with what lorries, buses and trains use these days, any gone over to balls and with hub designs where the bearing needs dismounting routinely? Indeed Al-KO in their heavier duty trailers I noted were still on tapered rollers; what do they use in their motorhome bolt on chassis?

 

Also just my opinion, but based on facing these very design challenges way back.

 

 

Edited by JTQ
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24 minutes ago, JTQ said:

 what do they use in their motorhome bolt on chassis?

1

 

I don't know but this is the front hub on PSA chassis cab.   That looks like a sealed bearing.

 

1462517552_Chassiscabbearing.jpg.8fdacdd48061f2e05f304ff79ff6cf1e.jpg

 

 

Edited by Jaydug

Citroen C5-X7 Tourer+Avondale Rialto 480/2
https://jondogoescaravanning.com

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Yes, but the hub is separate from the brake disc/drum, so not a direct comparison in that respect, requiring pulling apart every 3000 miles or annually.

Do you know  the load capacity of that axle, if the bearing is comparable in size to our caravan's and if it is an opposed ball race unit?

 

 

Edited by JTQ
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1 hour ago, JTQ said:

Do you know  the load capacity of that axle

 

 

Afraid not.   The only detail I have from the parts book is that it's a LWB Chassis Cab for heavy payload - type H20.

Citroen C5-X7 Tourer+Avondale Rialto 480/2
https://jondogoescaravanning.com

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7 hours ago, JTQ said:

In concept there is nothing wrong with sealed for life bearings, however with it comes a big negative. [etc etc]

 

Some excellent points in that post, JTQ.  I must admit I was taken aback and somewhat disappointed when I first took the brake drums off my AlKo chassis, to find the brake drum and hub were made in one piece.

 

Incidentally, as you asked, I have worked in train depots and all the trains I have seen had taper roller bearings.

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Has anybody else had to have wheel bearings changed on their vans?

I ask, because on our last service the we were advised ours need changing, haven't had it done yet though. 

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Yes on the vans second service both bearings were shot and replaced.   They showed me the ones they had taken out and no doubt they needed changing.  The van was built in Feb 2015.  I think I have read a few reports of van of that sort of age having problems.  Make we wonder if Alko changed supplier?

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33 minutes ago, fred said:

Yes on the vans second service both bearings were shot and replaced.   They showed me the ones they had taken out and no doubt they needed changing.  The van was built in Feb 2015.  I think I have read a few reports of van of that sort of age having problems.  Make we wonder if Alko changed supplier?

 

IMO the more telling of substandard bearings would be with instances of both sides failures prior to a brake/hub service.

All those cases I know of both side failures have been after at least one service on the wheels.

The nature of these types of bearings failure, is for substandard ones falling over in very early life. Healthy bearings failing in the very low mileage usage caravans see will be extremely low, so two failing that much more unlikely. By far the highest  number will be following some trauma that initiates, typically inner track damage.

As said, just my opinion.

 

 

Edited by JTQ
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47 minutes ago, fred said:

Yes on the vans second service both bearings were shot and replaced.   They showed me the ones they had taken out and no doubt they needed changing.  The van was built in Feb 2015.  I think I have read a few reports of van of that sort of age having problems.  Make we wonder if Alko changed supplier?

  How do you know they were your old bearings? I have had parts "changed" in the past when "my" old ones shown to me were not "mine", I know this because MY marks were not on them. Sad to say there are some dodgy workshops out there. :(

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