i tore open the hydro pump and from what i have read up on this looks to be normal.does this really need a bath before reassembly? these pics are of the diff. gears that i thought may have wear. i'm not sure if you can see clearly on the friction sides of the teeth, the uneven wear markings. also in the last photo, does this crud need to be flushed out of the pump? if so how?
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