Cannot find parts - Monarch Type B hydrant leaking

[Rectifier]

In fact, I can't find any proof that this thing ever existed except for its presence in my yard. It's a Monarch Type B with the numbers 1420-51 and 1420-52 on the castings.

It has blown the seal that separates the open and the drain-back functions. So water bubbles up around it when the hose is running and it won't build enough pressure to run even a single impact sprinkler. At least it doesn't currently waste water by leaking all day, but come winter I'm sure it will freeze solid.

I don't want to dig an 8' deep hole by hand in the hot sun, nor do I want to do so with the loader and break the pipe. I honestly don't have time for this stupid problem. But I can't even attempt to find a rebuild kit without info on the thing. Are these guys even slightly standardized such that I can use another brand's kit or am I digging a hole?

[haypoint]

photo?

[Rectifier]

Dark outside!
I'll get one tomorrow if it would be of any help. What paint remains is blue, it is an ancient relic. Looks like a fairly ordinary hydrant, has the markings as indicated, not many other distinguishing features.

[haypoint]

Can you take it apart and get a general idea of the size and material you need to rebuild?

[Rectifier]

The idea of taking it apart makes me a little nervous, which is why I came looking online first.
I have to shut down the well to do so, and if the sealing plunger disintegrates or I can't get it back in, then I lose all water at the ranch including my water bowls (no shutoffs anywhere in the system, thanks previous owners) until I dig it up. I have a 150gal trough I keep filled up as a backup, but that would be depleted in only a few days if the water were to go down semi-permanently, and we are poorly set up for hauling water.

[Allen W]

Where is the water bubbling up, at ground level or at the stem at the top of the hydrant?

[Rectifier]

Ground level. After talking with some guys in the area here they told me to dig it up. It is ancient, nobody ever found parts, and likely the riser pipe has split after the extreme winter we had (10' deep frost line, deeper than the hydrant).
Problems did only occur after the winter. Looks like I am in for the big dig.

[Allen W]

If it's leaking at the ground level your riser pipe has failed some where, shovel time. Be careful digging that deep and shore up the sides of the hole as you dig.

[rambler]

Oh my yes dig it up when you can control the time of it. You are on borrowed time with your configuration.

Buy an Iowa Woodford hydrant, Cadillac of them, parts everywhere available. If you spend 20-50 bucks more today, and it if it saves you some grief 15 years from now, you will be so glad..... Not a place to go cheap, and I'm a cheap guy too.....

Paul

[Rectifier]

Going to dig a big old hole with my new little loader tractor. Was going to start yesterday but other disasters occurred! I don't like/trust homemade shoring so I will leave shallow sloped walls to avoid crushing. Trenches are dangerous and a lot of people do not respect them...