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Panhard oil filter baseplate wearing well

I had to remove the oil filter kit on this engine, so I could heat the crankcase up to remove the front main bearing, and begin the oil gallery modification.

On stripping the oil pump out, I was surprised to see a slightly lopsided wear pattern to the cam driven oil pump rotor, but this suggests there is a slight bit of play in the oil pump shaft, as it’s a reaction against the thrust forces produced by the gears meshing at the camshaft drive.


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One big positive is how fine the scratching is to the baseplate surface, where the steel gears rub against the aluminium. That is a good sign the filtration is working, as I’d normally expect to see heavier scoring, if an original mesh strainer was fitted.

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