Repair-It

The wear plates I ordered off Amazon were the wrong ones - apparently Parker/Ultra pumps and Hyrdeco/David Brown pumps were the two common JCB types - I believe the much-smaller plates I received were Parker/Ultra, contrary to the Amazon ad. Hopefully the seller in India follows through on the "promise" to send a prepaid return envelope so I can ship them back.

I emailed Friday and then called White House Products in the UK today. They can't seem to answer what among their parts catalog is correct without the full pump model number. I pulled what I could off the super-corroded pump label plate, but I think it's still only partial. We'll see if they come back with any information, but I'm a little worried that I don't even have replacements ordered yet and the calendar is getting away from me to get a foundation in fast...

Per my read of the SN - I believe I have a David Brown 1900 series pump, probably a 1909:

https://www.unwinhydraulic.co.uk/_image ... nts/19.pdf

You seem to resemble this job

https://youtu.be/UBh00P60jlU?si=kPGcnfm5jV2KPZTF

White House Products in Scotland has taken forever to get back to me - I'm still waiting for them to tell me the roller bearing 1900 series wear plates are correct. I sent Craig yet-another-message this morning and still haven't heard back. In the meantime I tried emailing Unwin Hydraulic Engineering, but they'll only sell me a whole pump, and they only have a two-bolt version that I don't think will fit the accessory drive shaft on my machine. I think the two wheel steering model has a much simpler pump mounting and layout that would be easy to adapt. The 4WS models have a side-mounted pump that is on like an 18" shaft adapter off the engine gear accessory drive.

I could not source replacement wear plates for my hydraulic pump - the best source for them (Whitehouse Products) measured them for me and theirs were 5 mm thick and mine were 6.3mm thick. I resurfaced mine on a piece of granite tile with some sandpaper upside and reassembled and reinstalled the pump. It's probably 10% or 15% better performing when warm and at least usable in the interim, but I still need to find a pump as I believe it is still significantly under-performing.