Metal in oil

Its sounds very much like hard facing off a shaft.

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Originally Posted by CraigE

Pics not turning out tonight, will try again in daylight. BILaw is same and done lots of Cat engines. Definately very magnetic. I am more than capable of rebuilds but would like to detrmine where it came from. It is polished metal on one side (same colour as sprocket teeth) and a dull grey unpolished metal on the other and has a very slight cure to it. Thanks for the input, not something I have seen before. Apart from this the engine and components are spotlessly clean.

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CraigE, can you see the camshaft lobes from underneath, (never had a look myself).
If you can check the camshaft lobes, get someone to rotate the engine for you, sounds to me like part of your camshaft, or the cam followers, hope I'm wrong, thanks for the feedback, Regards Frank.

craigE, I had the same problem with my 130 td5. it turned out
to be the timing chain tensioner had let go on one side [they run 2 ]
The metal filings in my motor had done enough damage for a
full rebuild, mine had done 146k. I had it rebuilt but now I'm
pulling it out & putting in a 3.9 & auto as I dont trust it &
diesels cost way to much to fix. I'd rather spend money on
fuel than repairs...
Lots of luck Jeff

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Originally Posted by Tank

CraigE, can you see the camshaft lobes from underneath, (never had a look myself).
If you can check the camshaft lobes, get someone to rotate the engine for you, sounds to me like part of your camshaft, or the cam followers, hope I'm wrong, thanks for the feedback, Regards Frank.

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I reckon you could be on a winner there Tank

Is it coming loose? Could it be a bit of this? not sure what they look like on the td5 but I no they come loose!
Dave

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Originally Posted by CraigE

May pull the bearing caps off and check.

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I hope you're aware that if the big-end caps are refitted the wrong way and started to be tightened then the conrod must be replaced as it destroys the fracture joint.

Piece of a crakshaft thrust washer, perhaps?

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Originally Posted by jbell110

craigE, I had the same problem with my 130 td5. it turned out
to be the timing chain tensioner had let go on one side [they run 2 ]
The metal filings in my motor had done enough damage for a
full rebuild, mine had done 146k. I had it rebuilt but now I'm
pulling it out & putting in a 3.9 & auto as I dont trust it &
diesels cost way to much to fix. I'd rather spend money on
fuel than repairs...
Lots of luck Jeff

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You are a very wise man :)

IIRC JustinC has had a number of customer engines have the hard facing let go on the injector cam lobes.

I think he said he'd only seen '99-'01's do this so far. We were discussing only a couple of weeks back if it was a lube or metalurgy issue, which is what I reckoned it was.

MM all worth a look.
It does not appear to be from the bottom end, so maybe timing gear or cam. Trying to work out how such a big piece from the cam would get into the sump though.
Photos are crap so wont post them.
Cam will be a drama to check.:(But I suppose will need to check.
Timing gear will be next inspection, but that will take time as is a fairly involved job, unless I can get a decent view from underneath.