Mystery noise..again

Run a2006 TD5 130 tipper for work as a tree surgeon nowadays..gets fairly well used. Recently had the old pig in for a MOT and literally the day after driving it it made what could only be classed as a metal on metal noise followed by an almighty bang! I've had her in at 2 garages now who say they are unable to diagnose the fault? Its had both the rear diff checked and gearbox and transfer boxed out and checked too!!! Currently bill stands at 2.2k so far so any wise folks care to hazard a guess? Its still running but with seemingly much reduced pull whilst towing and intermittent "catching' noise as if something is getting stuck somewhere?!

Drive members ok ?
Drive shafts ?

Have you tried removing a propshaft and driving in 2WD ?
Sounds like you covered all the expensive options ...

Where is the noise coming from?

miktdish said:

Drive members ok ?
Drive shafts ?

Have you tried removing a propshaft and driving in 2WD ?
Sounds like you covered all the expensive options ...

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Not my choice about the price unfortunately.. a so called gearbox and axle specialist has seen fit to start with the rear diff and gearbox and i am now 2k in and truck still no better off. To say im a tad miffed is an understatement..can only describe the noise as a metal on metal noise with an occasional catching noise or bang.

Handbrake binding?

Is the noise speed related? i.e. does it change as engine revs or road speed change? Is it only there on the move? It does sound like a propshaft UJ has let go to me, but I would expect that to be noticed by your gearbox guy.

Just another thought - any change when the steering is used? There are also the CV joints in the front swivels. If you were moving slowly with the steering near full lock you would usually hear something if one has gone. Fairly cheap fix, as with the propshafts.

Check If hand brake drum is hot after driving some.

Another possibility is that it is clutch related. About four years ago I had a problem which turned out to be the boss in the middle of the clutch friction plate coming loose. In my case I was left without drive at all, but I had a clattery noise that sounded like something catching when I tried to move it under its own power.

So I'd be wondering about the clutch and dual mass flywheel, seeing as that's something no one has mentioned yet.

Brown said:

Another possibility is that it is clutch related. About four years ago I had a problem which turned out to be the boss in the middle of the clutch friction plate coming loose. In my case I was left without drive at all, but I had a clattery noise that sounded like something catching when I tried to move it under its own power.

So I'd be wondering about the clutch and dual mass flywheel, seeing as that's something no one has mentioned yet.

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Clutch was my first thought too. I was thinking the friction plate might have thrown a spring

Def90man said:

Clutch was my first thought too. I was thinking the friction plate might have thrown a spring

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In the standard TD5 the friction plate is solid and all the springs are in the dual mass flywheel. Either way, there's some possibility of noise and failure to transmit drive adequately.