YM 1500 Stop Valve

[careyo63]

I wouldn't use the tractor with the valve shut either. Some friends ym2500 refurbished only a few months old started leaking at the pump sure enough someone shut the valve. Lucky all I had to do was tighten the lines on the pump up.
Here is a pic of the yanmar adj. stop for your lift handle Clemson was referring to. I also had to replace the spring and washer on the handle also. PMO when it would still lower when it was not on the stop and found my linkage had alot of play in it so I just had to snug up the spring alittle.
Been almost 3 yrs now with no problems.:thumbsup:

Carey

 

[normde2001]

""A slow return @ stop valve is located in hydraulic cylinder head. "

What does that mean? It sounds as if that manual is referring to a single multifunction valve.

 

[winston1]

Norm, I typed that word for word out of the manual. In my opinion it is a multipurpose valve. It states it can stop the lift or slow or faster drop speed. I have use mine for slowing drop speed for 3 years. I am careful not to close valve, however, if I slow drop speed I can tell no difference in the lift speed or pull on the pump. As I stated in my earlier post it can also be used in conjunction with a single acting cylinder.

 

[clemsonfor]

A big problem you see in some of this stuff is whats lost in translation. Your guess is as good as mine to what that means, if you fully understand hydraulics and how its plumbeb and feel comfortable doing what you are fine. I have a rudeamentary knowlege of them from looking at it and reading about them so i take others words on this.

 

[normde2001]

Norm, I typed that word for word out of the manual. In my opinion it is a multipurpose valve. It states it can stop the lift or slow or faster drop speed. I have use mine for slowing drop speed for 3 years. I am careful not to close valve, however, if I slow drop speed I can tell no difference in the lift speed or pull on the pump. As I stated in my earlier post it can also be used in conjunction with a single acting cylinder.

I suspect that a multifunction valve would work entirely different than a separate "servicing stop" and "slow return" valve. I don't have my tractor or manual handy, but mine squeals when operating the tractor with the valve partly closed. I'm pretty sure it would dead-head the pump.