Bearing wear on a 97 7.3, 360K on the clocks - Ford Powerstroke Diesel Forum
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Old 10-09-2013, 05:38 AM
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Bearing wear on a 97 7.3, 360K on the clocks

I started pulling the bearings on my new-to-me 7.3 since it's out and the odo shows 360K. I don't know if it's been rebuilt before. The journals look good on the ones I've pulled, but the rod bearings show some interesting wear. The last is a main cap, obviously some hard piece of dirt got in there and gouged that bearing. All bearings are being replaced. Any idea what caused the weird rod wear? The rod side shell looks like heat affected the center.
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Old 10-11-2013, 12:05 PM
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I mean its got 360k on it. At least theyre not spun.
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Old 10-12-2013, 02:14 PM
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Oh yeah, I'm just trying to make sure I'm not missing a different problem that will wipe out new bearings. I was concerned about possibly a leaky injector causing too much detonation causing that wear pattern on the top rod bearing shell. after taking apart the rest of them I'm going to guess it's normal.
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Old 11-10-2013, 07:24 PM
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I've never done a diesel, but done a few gasoline engines. Wear doesn't look too bad to me for a higher mileage engine..... Got 372k on my 7.3. Never been apart.
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Old 11-10-2013, 07:37 PM
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Looks like spalling. Usually due to lack of lubrication.

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