Snowblower Hydraulic Issue

[flying belgian]

The lower coupling is not connected!!! Start by fixing that

View attachment 133392

There's your problem.

 

[Ron(Ont)]

The lower coupling has been replaced and is no longer an issue.

 

[Jim.ME]

So, I bought a gauge this morning, the upper QC was 2000psi @ 1000rpm, the lower one was 0psi. I moved the cylinder to the FEL QC's and it worked perfectly. Do I need to replace the single spool, or is it fixable?

Hard to say without identifying that single spool valve. Some valves can be set up to operate single acting cylinders, that might be what you have. Also, some can be switched from single to double acting, that may be what your valve is, that is why I say the valve needs to be identified. There may be a screw on it somewhere to change it over. Does the handle move both directions equally and spring back to center?

Try getting more good pictures around the valve showing details, look for a tag or stamped info on it.

 

[Ron(Ont)]

I will take a better look tomorrow. Yes, the handle moves equally in both directions and springs to the center.

 

[Ron(Ont)]

I was looking at my posted photos and on the handle is printed Cross and on the opposite side is 4Z0030. I can also conclude that it is configured open center and power beyond,

 

[Jim.ME]

I was looking at my posted photos and on the handle is printed Cross and on the opposite side is 4Z0030. I can also conclude that it is configured open center and power beyond,

That handle was used on many Cross valves, so it doesn't help much of any. Numbers on the valve body will be more meaningful.

Your tractor is open center.

 

[Ron(Ont)]

I took a bunch of photos of the parts I can see and all that I can find is "Cross", "Made in USA" and "IN and OUT" embossed on the top, which is my bottom side. I have been searching and believe what I have is a CV1, Here is a diagram.

 

[Jim.ME]

I took a bunch of photos of the parts I can see and all that I can find is "Cross", "Made in USA" and "IN and OUT" embossed on the top, which is my bottom side. I have been searching and believe what I have is a CV1, Here is a diagram.

Close, but I don't think so. Look at the difference in the plug sizes for the 3 and 4 way conversion plugs in the drawing and this picture compared to your valve.

Sorry, I looked at the wrong picture. If that is a CV1 valve the small plug may be the plug group for the 3-way operation which is for single acting cylinders. You would need a 4-way plug group, #28 in the drawing you posted. Pull the plug out and see if it looks like #26 or #27.

 

[Ron(Ont)]

It looks tiny in that picture but looks the same to me in this photo. Do you have any suggestions. Massive damage to the spool shaft or maybe the relief valve or the wrong conversion plug?

 

[Jim.ME]

It looks tiny in that picture but looks the same to me in this photo. Do you have any suggestions. Massive damage to the spool shaft or maybe the relief valve or the wrong conversion plug?

If you missed it in my last post (#28), I edited my reply when I noticed I had looked at the wrong picture and I think you may be right. As I posted in the edit pull that plug out and see if it looks like a 3-way or a 4-way plug using the drawing you posted.

 

[Ron(Ont)]

Well, I just checked the plug and it is the wrong one. Just ordered one. Thanks for the help.

 

[Jim.ME]

Hopefully that solves it. Post back once you get it installed and try it.

 

[Ron(Ont)]

I finally got the part, was backordered. Now it works like a charm. Here a couple of photos and video clip.