For the motor, I think it will be a rebuild by wiperman as the only (and best) option. Believe he has the market cornered on parts and doesn't sell any kits.
For the washer, McVey's still has the rebuild kits listed in their price list
http://www.mcveys.com/pricelist.pdf with two kits and price points in the 55 Cadillac section. A different price in the 56 Cad section so not sure what the difference might be. Tucson Packards used to sell a washer kit but he seems to have closed his store. Not sure if any of the other Packard vendors might have something.
As to rebuild instructions, while not official, Big Kev rebuilt his unit using a McVey kit and put together a very nice how to article available for download.
https://www.packardinfo.com/xoops/html/downloads/Rebuilding%20a%20Trico%20Washer.pdf A couple of years ago I did a how it works post. Don't find it right off to link but if you want my observations -- again, not official -- on the sequence of operation, I can probably figure it out again -- unless someone found a fault with the logic or can find that post again.
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