Past point of no return and broken it (Ford 4000 hydraulics)

spandit · Nov 22, 2017

As I've discussed before, my pump strainer was heavily blocked and even after splitting the tractor and cleaning it the best I could, the hydraulics were still slow and jerky. I was advised that the remote filter from a 4600 would fit and so I sourced and bought the necessary parts.

After a lot of hassle and unbolting stuff (not least the top cover which wouldn't come off without a fight) I destroyed the old filter in removing it. Thinking the new assembly would just go straight in... it doesn't. The hole in the side of the gearbox casting is slightly too small (the paper gasket on the remote assembly has a cutout in it to enable it to fit but the cutouts in the casting are a different shape and smaller). I'm now left with a tractor with no rear hydraulics. Short of running it unfiltered (if I can make up a suitable feed pipe to the pump) or grinding a recess into the casting, I'm stumped and depressed.

Bern · Nov 22, 2017

Not sure who told you to put a 4600 filter on it, but that would not have been my advice. Regardless, at this point, grinding a recess into
the cavity and getting some sort of filter back in there would be the route I'd go - either that or look for a good used 4000 strainer. You
don't want to run that pump unfiltered.

spandit · Nov 22, 2017

What would have been your advice? Doesn't seem to be a part that's available. Grinding does look like the order of the day - shouldn't take a huge amount although does seem a shame

Bern · Nov 22, 2017

I find it hard to believe that you can't find a used intake screen for a 4000 somewhere.

As for what my advice would have been, it would not have been to put a 4600 filter on it. All that does is make the filter easier to change,
it won't solve the original problem. You said that you had cleaned the original screen and that the hydraulics were still slow and jerky.
Installing an even more restrictive intake filter from a 4600 would not have solved that problem. Myself, I would have flow and pressure
tested the pump at that point to isolate it as either a pump issue or a downstream issue.

spandit · Nov 22, 2017

Fair point but the strainer was collapsed and not something I could straighten so it was fairly restrictive anyway.

spandit · Nov 22, 2017

Well, I removed a small portion of the axle casing (about 1/2"x1/4") to let it in. Can't get the PTO valve back in place now (took it out to improve clearance) but will attack it tomorrow in the light

Past point of no return and broken it (Ford 4000 hydraulics)

spandit

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Bern

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spandit

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Bern

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spandit

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spandit

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