Allô tag axle noisy bearings

[martin2603]

I have a 5ton tag axle MH. From new once at running temp I get an audible noise which I now believe to be the front offside of the tag axle wheel. It has had 3 trips to Fiat without success On the last visit they wound the brakes off so much that there was no effort on the handbrake!!!!!! This came to light at the first MOT last week. Handbrake now correctly adjusted and on a trip out yesterday on a rightish right hand lock the noise is back.
Alko U.K. are still shut !

Anyone had this problem, we did not have it with the previous same model MH.

 

[cornish boy]

Oh yes, I know the noise you mean.... Swift Kon Tiki 669, did it from new, everytime it got up to running temp. Creaping along in a traffic jam was the worst, everyone just starred at us. (mind you, that may not have had anything to do with the noise)

Drove me mad until I walked into our Fiat Professional Dealer who had someone who had seen it before. They took my keys, went out to the motorhome, laid underneath, did something and then walked back in four minutes later and told me it was fixed.

Have to say, he was right and it hasn't come back in three years!

He didn't say, but watching him I think it was the brake drum backing plates singing and he just tweaked the plate on each of the four tag drums and Bob's your mothers brother.

HTC commercial at Theale if that helps, but thats a fair way away from Kent.

 

[martin2603]

Thanks for that, I will have a look , mine only occurs on right hand lock , with stress on the front axle it could make a bi of movement on the bearing and drum. Thought it might be over torque on the bearing.

 

[cornish boy]

Thanks for that, I will have a look , mine only occurs on right hand lock , with stress on the front axle it could make a bi of movement on the bearing and drum. Thought it might be over torque on the bearing.

Ours was the same, if you could keep in a perfect straight line with no laterial loading on the tyres it was fine. For months I thought it was related to the wheel bearings but they were checked more than once.

When driving along, I always thought the noise was coming from the offside rear wheels, my wife thought it was the nearside rear.

We arrived at a site after driving for three hours and I walked alongside while my wife swung the motorhome from lock to lock, at which point it was obvious it was both sides and possibly both wheels. I guess while driving I was hearing the offside noise from the driver seat, and she could hear the nearside noise from the passenger.

I can only conclude that the grease warming in the wheel bearing allows a fraction more movement when the tyre is loaded, which in turn closes the fagpaper gap between the backing plate and the brake drum causing the backing plate to resonate.

As I said, it was a four minute fix, the noise has not returned since and the motorhome has passed an MOT at a different garage in the meanwhile.

 

[martin2603]

Do you know if they did a job sheet for it, without a reg that can’t trace the remedy

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[cornish boy]

Do you know if they did a job sheet for it, without a reg that can’t trace the remedy

Sorry, only just noticed by chance that you had asked a question.

I shouldn't think so, I was still describing it to the service manager when the mechanic took the keys and did whatever he did. I was on my way again within 10 minutes of arriving.

For future reference, if you quote the message you are replying to, the person wil get a notification that you have replied to it.

 

[martin2603]

Sorry, only just noticed by chance that you had asked a question.

I shouldn't think so, I was still describing it to the service manager when the mechanic took the keys and did whatever he did. I was on my way again within 10 minutes of arriving.

For future reference, if you quote the message you are replying to, the person wil get a notification that you have replied to it.

Thanks anyway, took the bull by the horns and with help from my grandson (operating handbrake) checked it all out from below, o/s shoes just tight on the adjustment thus binding when they got hot. Two turns off the main cable and three clicks off the shoes. Sorted.

 

[cornish boy]

Thanks anyway, took the bull by the horns and with help from my grandson (operating handbrake) checked it all out from below, o/s shoes just tight on the adjustment thus binding when they got hot. Two turns off the main cable and three clicks off the shoes. Sorted.

Great news.

 

[Capitanjohn]

Some tag axels have a grease on them, which not in the service schedule, just look underneath and see if there is one.