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I had the same problem with the Liftall pump on my '47 M this spring. The crack in mine was about half way along the high-pressure passageway for the left rear outlet (the one on the pump back plate). I ended up using carb cleaner to remove the oil residue from that passageway, screwed a plug into the end of it, then mixed up 3 tubes of JB Weld and filled/plugged that passageway completely. I let it cure overnight, re-assembled and installed the pump, it's been working fine with no leaks or problems since. (I only use one hydraulic outlet, so having only two working outlets isn't a problem for me.) I don't know if just the pump back plate is still available anywhere, but even if it is, I doubt I could get if for the $15 it cost me for the JB Weld. The only whole pumps I could find, including this site, sell for at least $700. Mitch
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